Written by Marijn Overvest | Reviewed by Sjoerd Goedhart | Fact Checked by Ruud Emonds | Our editorial policy
30 Most Painful Negotiation Mistakes of 2025

As taught in the Negotiation Course for Procurement Professionals / ★★★★★ 4.9 rating
What are negotiation mistakes?
- Negotiation mistakes refer to actions that can make a difference in your negotiation, determining whether you land a great deal or walk away empty-handed.
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One of the biggest negotiation mistakes is talking too much instead of listening, which can cause you to miss important signals from your counterpart.
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Another negotiation mistake is forgetting to bring a list of trade-offs, which limits your flexibility and creativity during the deal.
30 Negotiation Mistakes
Avoiding common pitfalls can make all the difference in a negotiation. Below are the 15 negotiation mistakes to watch out for and how to avoid them.
1. No Preparation
Too often, individuals or organizations rush into negotiations without proper planning. But preparation is the true drive of success. Coming to the table well-prepared gives you power, boosts your confidence, and enables creative problem-solving.
Before you start any negotiation, make sure you understand your position but also the position of your negotiation counterpart. The more rigorous you are in preparing a detailed, specific understanding of your negotiation counterpart and their perspective, the better your negotiated results will be. Learn more on how to understand your counterpart.
Example of this Negotiation Mistake
In 2019, WeWork, supported by major investor SoftBank, moved forward with plans for an IPO that valued the company at $47 billion.
The launch was widely publicized, and WeWork positioned itself as a leading innovator in the co-working industry. However, this excitement quickly turned to skepticism as investors began to scrutinize WeWork’s financials and governance structure, including the then CEO’s leadership.
Both WeWork and SoftBank had failed to prepare for the intense scrutiny of the investors and public markets. Their lack of readiness was exposed when vague financial disclosures, leadership challenges, and an overhyped business model came to light.
The IPO was cancelled, the CEO resigned, SoftBank had to intervene with a $5 billion bailout, and WeWork’s valuation plummeted.
This collapse serves as a clear reminder that preparation is critical and neglecting it can unravel even billion-dolar negotiations.
How to Avoid This Negotiation Mistake
Before the negotiation, create a preparation sheet that includes historical spending, supplier performance metrics, and current market prices for the product category.
Ensure you define your walk-away point, consider potential concessions (such as longer payment terms), and establish clear objectives. For example, securing a 6-month fixed rate.
During the meeting, refer to your notes to confidently counter any supplier price increases, using real data to support a smaller adjustment.
This kind of preparation not only helps you achieve better terms but also strengthens your credibility and gives you greater control during the negotiation.
2. Getting straight to the business
Always remember: it’s not the company that decides to agree or disagree to a deal, people do. Many procurement managers forget that to get things done, you need to adapt to what works—and what does not—for the person on the other side of the table.
Make a connection! People who feel trusted and comfortable will behave more generously at the deal table.
Listen instead of talk and pay attention to the non-verbal communication of your counterpart to achieve insights into what works and what not.
Example of this Negotiation Mistake
A prominent American semiconductor company initiated a partnership discussion with a leading Asian electronics manufacturer in 2023.
The initial meeting was held virtually and was attended by senior executives from both companies. However, instead of beginning with a personal introduction or cultural pleasantries, the American team jumped directly into outlining technical capabilities, production timelines, and pricing models.
This abrupt approach clashed with the Asian company’s cultural expectations. Feeling that the process was too transactional, the electronic manufacturer slowed down the negotiation and demanded further meetings to establish mutual understanding.
Ultimately, the deal took several extra months to close and required significant rework to restore rapport. This example highlights the importance of aligning negotiation style with cultural expectations and using the early moments to build trust before diving into terms.
How to Avoid This Negotiation Mistake
Schedule your meeting with extra time to allow for some informal dialogue at the beginning.
Start the conversation by asking about the supplier’s recent expansion and mentioning any positive feedback from your past cooperation.
This kind of rapport-building helps ease the atmosphere and sets a more collaborative tone.
When you eventually shift to discussing pricing and logistics, the supplier is likely to be more receptive and open to compromise because they feel respected and engaged from the very start.
3. Not having an endless list of gives and takes
Make sure you have an endless list of gives and takes. If you do not have this clear, you’ll never get the best result. So: focus before every meeting on what is most important for the person’s company I am negotiating with?
Make a long list with variables that are important for both you and the company you are negotiating with. The more variables on your list, the better. Rank them before you start negotiation in importance for you and your counterpart.
Best deals are created when you exchange the variables with a low value to you and high for the other versus the ones with a high value to you and low for the other one.
Example of this Negotiation Mistake
In 2023, the Yellow Corporation, one of the largest freight companies in the U.S., faced a high-stakes negotiation with the International Brotherhood of Teamsters union, representing 22,000 of its workers.
With rising financial pressures, Yellow Corporation approached the talks demanding operational changes and concessions but failed to present a clear list of trade-offs or alternatives.
The Union resisted the changes, citing a lack of transparency and inflexible demands. The impasse led to a full-scale strike, halting freight operations nationwide.
In the end, Yellow was forced to file for bankruptcy, pointing to the breakdown of labor negotiations as a major factor. This example shows how the absence of a prepared, flexible list of gives and takes can lead to irreversible negotiation consequences.
How to Avoid This Negotiation Mistake
Before the meeting, take time to build a long list of potential gives and takes (items you’re willing to offer or ask for during the negotiation). Think beyond just price, include variables like delivery terms, contract length, or added services.
Rank these variables by importance to you and try to estimate how valuable they might be to your counterpart. This preparation allows you to confidently trade something that costs you little but brings high value to the other side.
During the negotiation, use this list to create win-win scenarios and stay flexible. The more options you have, the easier it is to break deadlocks and reach better outcomes.
4. Not understanding the influence of cultural background on negotiations
Understanding culture falls within the preparation stage of negotiation and is very important for identifying benefits and potential mistakes.
Understand how negotiations are established and managed in certain cultures, will help any negotiator around the globe getting better results.
The negotiation styles will help you learn more about the delicate subject of cultural influence on negotiations.
Example of this Negotiation Mistake
During the January 2025 demo call between Procurement Tactics and one of its clients, the discussion initially focused on introducing the platform’s training features.
The client has a global team, and many of their procurement professionals are based in non-English-speaking countries.
As the conversation progressed, the client representative highlighted that many of his colleagues were based in France and had limited proficiency in English. The demo, which had been entirely presented in English, didn’t account for this need.
The client politely asked if French-language options or subtitles were available. The presenter responded positively, offering to explore the possibility of localized content.
While this was a constructive outcome, the need had not been anticipated beforehand. This scenario shows how overlooking language and cultural differences can cause friction or misalignment in global negotiations.
How to Avoid This Negotiation Mistake
Research the supplier’s cultural background before the meeting. For example, in Japanese business culture, hierarchy, patience, and indirect communication are highly valued.
Adjust your approach by allowing for pauses, avoiding pressure tactics, and focusing on building long-term trust rather than pushing for immediate results.
Consider bringing a senior colleague to demonstrate respect for hierarchy.
By showing cultural awareness, you build credibility and lay the foundation for a stronger relationship, which can lead to better cooperation and long-term success.
5. Competing instead of collaborating: assuming win-lose is the only option
Negotiations that end up in a win-lose situation, are rarely the ones that build a sustainable model between companies and persons. Approaching negotiations with a win-lose mentality without exploring the possibilities raised by other interests will lead that you miss out on valuable opportunities.
Remember, there are always opportunities to build relationships in negotiations. Building trust through openness and transparency is the way to come to a solution that best suits both parties. To state it in negotiation language: both parties can have a piece of the pie – but working together can make the pie bigger.
Example of this Negotiation Mistake
In late 2022, Spotify entered contentious negotiations with several major music labels over royalty payments for streamed content. Spotify aimed to reduce the percentage of revenue paid to labels while increasing investments in podcasting and exclusive artist deals.
The company’s approach emphasized leverage and market dominance rather than partnership. This stance led to a backlash from artists and the public, many of whom accused Spotify of undervaluing musicians.
As negotiations dragged on, some labels delayed licensing renewals, affecting content availability on the platform. The tension forced Spotify to revise its approach and strike a more balanced deal that preserved artist relations.
This case highlights how overly competitive tactics can damage trust and collaboration, resulting in long-term reputational risk.
How to Avoid This Negotiation Mistake
Approach the negotiation with a win-win mindset by starting the conversation with questions about the supplier’s challenges and objectives.
Be transparent about your cost pressures and suggest exploring joint solutions, such as volume-based discounts or process improvements.
By focusing on common ground and mutual benefits, you can co-create a deal that boosts efficiency and profitability for both sides.
This collaborative approach not only helps you secure better terms but also strengthens the relationship for future negotiations.
6. Talking too much
Talking too much is a sure-fire way to kill a deal. Silence is a great tactic to diffuse the emotion and/or people with a temper. Generally, people are uncomfortable with silence. People feel they have to fill it, and usually what they fill it with weakens their position.
Use this knowledge in your advance in negotiations: most people can’t stand silence and are the first to fill it, very often with a concession. Silence also allows you thinking time, enables you to gain or regain position, and puts pressure on the other party.
Example of this Negotiation Mistake
The product demo between Procurement Tactics and a client last January provided an in-depth walkthrough of the training platform.
The team’s goal was to articulate the platform’s value clearly, which led to a detailed overview of features and tools. However, the client had some outstanding questions that were addressed only after the demo concluded.
While the session was informative, structuring it with earlier engagement and open-ended questions could have created more room for dialogue. This highlights the value of balancing presentation with discussion
How to Avoid This Negotiation Mistake
Prepare your key talking points, but make a conscious effort to ask open-ended questions and listen more than you speak.
Use silence as a strategic tool, after proposing, pause and give the supplier time to respond instead of rushing to fill the gap.
By creating space for the supplier to talk, you may uncover new opportunities, such as bundling services or adjusting delivery schedules, which can lead to a better overall agreement.
Active listening shows respect and helps your counterpart feel heard, ultimately strengthening collaboration and trust.
7. Letting emotion impact your judgement
To let emotion out of your negotiation is easy to say, but not so simple to remember during a negotiation. Multiple studies have shown that negotiations that start with anger or confrontation have poor outcomes.
Emotions have a nasty habit of undermining negotiation skills and clouding judgment. Remind yourself to stay objective, and get the opinions of those who are not emotionally attached to the deal before you make a decision you might regret.
Example of this Negotiation Mistake
In 2022, Tesla CEO Elon Musk surprised the public when he tweeted that he planned to take the company private at $420 per share and that funding had been secured.
The announcement came during a period of mounting pressure and speculation about Tesla’s valuation and operational stability.
Musk’s tweet was impulsive and bypassed internal processes and regulatory norms. It turned out that no formal funding had been arranged.
The SEC launched an investigation, and Musk faced legal consequences, including a financial penalty and stepping down as chairman of the board.
This case illustrates how emotionally charged decisions—especially in high-stakes negotiations can lead to unnecessary risk and reputational harm.
How to Avoid This Negotiation Mistake
Practice emotional regulation before the meeting by identifying potential triggers and preparing neutral, composed responses.
Set a personal rule to pause before reacting, and be ready to take a short break if tensions begin to rise.
During the discussion, stay calm, take notes, and use thoughtful questions to redirect any negative energy toward constructive problem-solving.
By keeping your emotions in check, you maintain authority, uphold professionalism, and keep the negotiation on track, even when things get challenging.
8. Thinking something is non-negotiable
Everything in life & any deal is negotiable. When you are aware of the fact that the terms for anything can be changed in your favor, a world of opportunity awaits for you.
Of course, there will be rules to respect with each deal on the table to help keep discussions but however, even rules are negotiable. They can be modified if you simply propose a solution.
Example of this Negotiation Mistake
Between 2020 and 2022, Netflix, a major streaming platform known for premium content, faced stiff competition from newer, lower-priced rivals like Amazon Prime Video, Disney+, and Hulu.
Despite clear market signals, the company refused to adjust its pricing model, assuming its brand and content quality were non-negotiable factors.
As subscribers began canceling in favor of more affordable alternatives, the platform was forced to reassess. It eventually launched an ad-supported tier and restructured its pricing.
By holding firm too long on a “non-negotiable” position, the company lost valuable market share. This example serves as a reminder that flexibility is essential to evolving customer and market demands.
How to Avoid This Negotiation Mistake
Create a realistic negotiation timeline that allows for internal review and reflection between each round.
Resist pressure, whether from your team or the supplier, to rush the process. Instead, use closing discussions to revisit key terms and confirm alignment on all important details.
Ask for a cooling-off period and use that time to consult legal or technical experts before signing anything.
This deliberate approach helps you spot potential issues, like vague warranty clauses, and address them early, ensuring the final agreement is both quicker and safer, without sacrificing quality.
9. Bluffing & Lying
Credibility is one of the most valuable assets you have as a negotiator. One of the quickest ways to lose it is to make threats that you don’t have the authority or conviction to make happen. Another way to destroy your credibility is by lying and making promises you can’t or won’t keep.
Example of this Negotiation Mistake
In 2020, electric truck startup Nikola Motors attempted to position itself as a game-changer in clean transportation.
During investor negotiations and partner discussions, the company released a high-profile demo video showcasing its hydrogen truck allegedly driving on its own.
The video was later exposed as misleading—the truck had actually rolled downhill during filming.
The founder’s exaggerated claims led to SEC investigations, criminal charges, and a dramatic fall in company valuation.
Investors lost confidence, and partnerships were dissolved. This example underscores that bluffing and deception may buy temporary advantage but ultimately lead to long-term damage and loss of trust.
How to Avoid This Negotiation Mistake
Stay grounded in facts and make only the commitments you’re confident you can fulfill.
Before the negotiation, review the limits of your authority and clarify which situations require internal approval.
Instead of bluffing under pressure, use transparency as your strength. For example, say: That timeline isn’t realistic with our current resources, but here’s what we can do instead.
This honest approach might require more explanation in the moment, but it builds long-term credibility and earns respect, even from demanding counterparts.
10. Too eager to close the deal
Almost at a deal? Don’t close!!! Make sure to add one important new variable to the deal table in the final phase. Do not relax! Keep your ‘endless list of gives and takes’ up to date during the ongoing negotiation process.
Why? In most negotiations, the moment to achieve ‘unexpected’ results is in the final phase, where a logical psychological process ensures that people are more likely to give away things more quickly.
Remember, there is no such thing as a ‘fair deal’, but there are many new variables to include in the final stage of the process towards a deal. Purchase volume rebates, lump sums & growth bonuses are excellent examples.
Example of this Negotiation Mistake
Last January, we were on a call with a prospective client, walking them through the platform. Our team member who was presenting is clearly enthusiastic—he’s firing off all the impressive features, saying:
“We also offer downloadable templates and over 25 modules preloaded…” which was meant to be helpful, but at the time, the pacing was fast, and the client didn’t have a chance to ask his question.
Although the client didn’t disengage, you could feel they needed space to react and share their thoughts. Thankfully, we shifted gears later in the meeting, asked more exploratory questions, and learned about their local rollout needs.
This situation taught us something valuable—showing value too soon without discovery can feel like you’re closing before the conversation even begins. And in negotiation, timing is everything.
How to Avoid This Negotiation Mistake
Don’t relax once the agreement seems near. Stay alert and keep updating your list of gives and takes.
Introduce a new value lever toward the end, such as volume rebates, growth bonuses, or payment incentives, since late-stage discussions are often when both sides are most open to flexibility.
Pause more frequently and ask open-ended questions to uncover any final concerns.
This approach ensures that closing the deal isn’t just about finishing. It’s about capturing maximum value, deepening engagement, and securing strategic terms.
11. Forgetting that walking away is an option
Too many negotiations take unnecessary long because of the absence of decision-makers at the table. Always ask yourself the question before you start any conversation: is my counterpart able to make decisions and to say yes to proposals? If the answer is no, don’t even start and walk away.
Example of this Negotiation Mistake
In 2020, Pinterest was finalizing plans to move into a $90 million San Francisco headquarters. However, with the rise of remote work and uncertainty due to the COVID-19 pandemic, the company reevaluated its needs.
Despite financial penalties and prior planning, Pinterest cancelled the lease. The move preserved flexibility and allowed the company to redirect funds to more strategic initiatives.
This scenario illustrates that even when commitments have been made, it’s sometimes better to walk away than double down on an outdated plan.
How to Avoid This Negotiation Mistake
Before entering any negotiation, make sure your counterpart has decision-making authority. If they don’t, reschedule or escalate the discussion to the right level.
Define clear walk-away criteria in advance, such as minimum margin, delivery timelines, or legal terms, and align with your team on when it’s appropriate to say no.
If you notice signs of a deadlock or a poor-fit deal, withdraw calmly and professionally, without burning bridges. This shows confidence and strategic clarity.
Your ability to walk away, even from a deal that’s almost closed, protects your organization’s long-term interests and strengthens your position in future negotiations.
12. Not negotiating with decision makers
There’s no point in running a negotiation if the people around the table don’t have the authority to make a decision or agree to a deal. If you have the feeling your negotiation counterpart does not have any authority to close a deal: directly stop the negotiation.
Example of this Negotiation Mistake
Last February, we were speaking with a global procurement lead from one of our clients—he was enthusiastic, sharp, and clearly saw the value of our platform. He said, “This is something I would love to implement across the board.” At first, it felt like we were cruising toward a decision.
But as we dug deeper, he shared something eye-opening: “We need to make sure we are talking to local stakeholders who have the authority. Right now, decisions are not centralized and everything goes through country-level managers.”
That changed everything. It reminded us that even the most aligned internal champions may not always be the final decision-makers. And while their support is key, getting clarity on who holds the actual power to sign off is just as crucial. It’s one of those lessons that sticks with you—you have to validate decision-making authority early, or you risk investing time without securing true buy-in.
How to Avoid This Negotiation Mistake
Early in the process, politely confirm who holds decision-making authority and map out all relevant stakeholders.
Ask targeted questions like: Who else needs to approve this or at what stage does procurement or legal get involved?
If your current contact doesn’t have signing power, suggest including the right people in the next meeting, framing it as a collaborative step forward.
By validating authority upfront, you keep the negotiation efficient, aligned with actual decision-makers, and focused on real outcomes, not just good conversations.
13. Asking for more than you need
Although the Gap Partnership trains negotiators worldwide to open extreme, the team of Procurement Tactics has the belief that opening a negotiation with an extreme first offer is not only very ineffective, it can also make you look very disrespectful to the other side. If they don’t laugh at your offer and leave the negotiation directly, you will have to make large concessions to bring your demands back to reality, weakening your credibility and your position.
Example of this Negotiation Mistake
In 2023, Warner Bros. Discovery decided to rebrand its HBO Max platform into a broader service called Max.
As part of the rebrand, they expanded content categories and simultaneously raised subscription prices. While the goal was to attract a wider audience, many existing users were confused by the changes and didn’t see added value in the bundled offerings.
The price hike without clear benefits led to customer backlash, increased cancellations, and eventually, promotional discounts to regain subscribers.
This example demonstrates that overreaching—by demanding more without demonstrating value can backfire.
How to Avoid This Negotiation Mistake
Start with ambitious but realistic proposals that reflect market value and the context of the relationship. Avoid opening with extreme demands unless you have a clear justification and a strong fallback plan.
Think from the other side’s perspective, ask yourself whether your offer would be taken seriously or seen as unfair or exaggerated.
Before the negotiation, determine your actual needs versus your nice-to-haves, and craft an opening position that leaves room for movement without damaging your credibility.
Instead of inflating your ask, focus on creating value, show why your proposal makes sense, and how both sides can benefit. This way, you’ll build trust, maintain control, and avoid having to make big concessions just to stay in the game.
14. Not asking or what you want
There is one key truth in negotiations: You must ask for what you want. Sounds simple enough, but in practice, it can often be daunting.
Negotiators naturally fear rejection or were taught not to be “greedy” as children but however, in business, rejection is never personal; it’s merely a reflection that you did not present a viable argument substantiating why you should get what you want. The offer is being rejected, not you, so keep emotions in check and re-calibrate your approach. The only way to master the art of rejection is to get rejected and keep asking.
When negotiating, make it a priority to ask for exactly what you want. Most of the time you will either receive what you want or an acceptable alternative.
Example of this Negotiation Mistake
Let me tell you about a moment that really stuck with us. It was during a January 2025 demo with one of our clients. We were midway through presenting the platform—showcasing features, exploring training modules—when someone on the client team raised their hand and said, “Actually, some of our team would really benefit from a French-language version of this.”
Now, that hadn’t come up earlier. It wasn’t on the original agenda, and for a moment there was a pause. But then our team leaned in. We offered solutions: subtitles, localized content options, and future language expansions. It turned into a really productive discussion.
The moment reminded us of something simple but powerful: sometimes people don’t ask for what they need unless you create space for it—or unless they find the courage to bring it up.
When they do, the value you can deliver expands dramatically. So whether you’re the buyer or the seller, asking—clearly and early—can shift the direction of a conversation and make it far more impactful.
How to Avoid This Negotiation Mistake
Always ask for what you want, directly, and early in the conversation. Even if it feels uncomfortable, understand that rejection in business is not personal. It’s simply feedback on your offer.
Train yourself to separate emotion from outcome. If your request is declined, treat it as a signal to refine your argument, not as a reason to hold back next time.
Before the meeting, identify your key needs and priorities, and make it your goal to express them confidently. The clearer you are, the more likely it is that you’ll either get what you ask for or reach a valuable alternative.
Remember, if you don’t ask, the answer is always no. But when you speak up, you open the door to better solutions and greater value for both sides.
15. Signing the contract without reading
Before you sign on the dotted line, it’s imperative you read what you are signing—regardless of the length of the wrap up of your deal. Make sure to read any agreement or contract in full to ensure you are not confirming terms you will regret and cannot undo.
Example of this Negotiation Mistake
Between 2019 and 2024, several independent musicians signed contracts with streaming aggregators that offered upfront exposure but poor long-term terms.
In many cases, artists did not read the fine print and later discovered they had forfeited ownership rights to their music or agreed to unfavorable royalty splits. Legal disputes followed as these artists attempted to regain control over their catalogs.
The outcome was not only costly in legal terms but also emotionally draining. This case is a stark reminder that contracts—no matter how standard or routine they appear—must be read carefully and understood fully before signing.
How to Avoid This Negotiation Mistake
Never sign a contract without reading it thoroughly, no matter how routine or standard it may seem. Take the time to go through every clause, including the fine print, so you fully understand what you’re agreeing to.
If something is unclear, ask questions or consult a legal expert. It’s better to delay signing than to accept terms that could hurt you later.
Don’t let the excitement of closing a deal rush your judgment. Create a habit of reviewing every document carefully, especially around critical areas like ownership rights, payment terms, and termination clauses.
By being diligent before you sign, you protect your long-term interests and avoid costly surprises down the line.
16. Failing to read body language
Ignoring body language in negotiations can lead to misjudgments and missed signals. Nonverbal cues such as avoiding eye contact, closed posture, or nervous movements often reveal disagreement or discomfort, even when words suggest otherwise.
Successful negotiators pay close attention to nonverbal messages because they help uncover the other party’s true intentions and allow for timely adjustments in approach.
Example of this Negotiation Mistake
Scott Harrison, a business coach, recalls his first major negotiation where he came fully prepared with facts, statistics, and charts.
Confident in his logical arguments, he focused entirely on data and ignored the nonverbal cues from the other side. As he later admitted, “I missed the discomfort in their body language…
I didn’t notice the frustration in their tone… I just kept hammering them with logic.”
Despite verbal agreement from the other party, signs like clenched lips, rigid posture, and a strained voice revealed growing skepticism and disengagement. Instead of pausing to address their concerns, Scott pushed forward with more logic, ultimately causing the deal to fall apart and damaging trust in the process.
How to Avoid This Negotiation Mistake
To avoid the mistake of failing to read body language, train yourself to observe more than just words during a negotiation.
Pay close attention to eye contact, facial expressions, posture, and tone of voice. They often reveal what the other side isn’t saying out loud.
If you notice signs of discomfort or hesitation, pause and ask clarifying questions instead of pushing your agenda forward.
By staying present, listening actively, and adjusting your approach based on nonverbal cues, you increase your chances of building trust and reaching a better outcome.
17. Believing the deal is done once agreed verbally (ignoring the post-negotiation phase)
One common negotiation mistake is assuming that the deal is finalized as soon as both parties reach a verbal agreement. In reality, the post-negotiation phase (drafting, reviewing, and formalizing the contract) is just as critical. Ignoring this stage can lead to misunderstandings, delays, or even the collapse of the agreement if expectations aren’t documented.
Successful negotiators stay involved after the handshake to ensure that all terms are accurately captured, responsibilities are clear, and both sides remain aligned until the deal is officially signed and implemented.
Example of this Negotiation Mistake
In 2022, Castle Restoration, LLC entered a deal to sell assets like equipment and a client list.
After executing the formal, written asset-sale agreement, both parties shook hands on an additional oral agreement: Castle Restoration would provide labor and materials to offset payments under a promissory note.
However, the original contract explicitly stated that no modifications would be valid unless in writing. When a dispute arose, the court ruled that the “handshake” side-deal was unenforceable, since it violated the no‑oral‑modification clause.
As a result, Castle Restoration ended up with wasted labor and materials, and no legal remedy to enforce the verbal agreement.
How to Avoid This Negotiation Mistake
To avoid the mistake of thinking the deal is done after a verbal agreement, stay fully engaged through the entire post-negotiation phase.
Don’t assume a handshake or verbal “yes” is enough. Make sure all terms are documented in writing, reviewed, and formally signed by both parties.
Clarify responsibilities, deadlines, and expectations in the contract, and double-check for any clauses that might override verbal agreements.
By staying detail-focused after the verbal agreement, you protect yourself from misunderstandings, legal issues, and broken trust down the line.
18. Overpromising and underdelivering
One damaging mistake in negotiations is overpromising during the deal-making phase and then failing to deliver on those commitments. This often stems from a desire to impress the other party or close the deal quickly, but it can severely harm credibility and long-term relationships.
When expectations are set too high and not met, trust breaks down, leading to conflict, contract disputes, or even complete deal failure. Skilled negotiators know that it’s better to set realistic expectations and consistently meet or exceed them, rather than risk reputational damage by overpromising and underdelivering.
Example of this Negotiation Mistake
In 2013, the U.S. government launched Healthcare.gov, a flagship online portal for enrolling in health insurance under the Affordable Care Act. The contracted vendors made grand promises: a seamless user experience, robust capacity, and rock‑solid performance right from day one.
But when the site went live, it collapsed under the weight of reality, crashing frequently, running painfully slow, and frustrating users with glitches. This dramatic failure was directly linked to overpromising on technical capabilities and tight deadlines, while reality proved vastly different, due to inadequate testing, rushed implementation, and underestimated complexity.
The fallout was immediate and painful: over $1.6 billion was spent on repairs, the site’s credibility was shattered, and public trust plummeted. Vendors and government negotiators alike faced severe criticism, and the debacle became a cautionary tale on the importance of setting realistic expectations.
How to Avoid This Negotiation Mistake
To avoid the mistake of overpromising and underdelivering, be honest about your capabilities from the start.
Resist the urge to promise more just to win the deal. Focus instead on what you know you can realistically deliver, even under pressure.
Before making any commitment, assess your resources, timelines, and risks carefully. It’s better to exceed expectations than to fall short and damage your credibility.
By setting clear, achievable promises, you build trust and lay the foundation for long-term success.
19. Not reassessing your BATNA
Failing to reassess your BATNA (Best Alternative to a Negotiated Agreement) is a critical mistake that can weaken your position during negotiations. Many negotiators define their BATNA early in the process but never revisit it, even when new information or changes arise.
As deals evolve, market conditions shift, or alternatives emerge, an outdated BATNA can lead you to accept a bad deal or reject a good one. Effective negotiators regularly evaluate and update their BATNA to maintain leverage and make smarter, more confident decisions at the table.
Example of this Negotiation Mistake
In the late 1990s, Netscape was in intense negotiations with AOL over browser distribution.
Confident in their strong position and early market dominance, Netscape failed to update their BATNA as Microsoft aggressively pushed Internet Explorer into the market.
Netscape overestimated its fallback options and underestimated Microsoft’s speed and reach. As a result, when AOL chose to partner with Microsoft instead, Netscape was left without leverage, unable to pivot to other viable deals.
This misalignment contributed significantly to Netscape’s rapid decline in the browser market and ultimately failed to secure a recovery deal.
How to Avoid This Negotiation Mistake
To avoid the mistake of not reassessing your BATNA, treat it as a living part of your negotiation strategy, not a one-time calculation.
As the situation evolves, keep researching, tracking new developments, and identifying fresh alternatives that could strengthen your position.
Ask yourself regularly: If this deal falls through today, what’s my best option now?
By doing so, you stay flexible, maintain leverage, and prevent yourself from settling for a bad agreement or walking away from a good one.
20. Focusing only on price instead of total value
One common negotiation mistake is placing all attention on price while ignoring the broader value a deal can offer. When you focus solely on lowering costs, you risk overlooking critical elements like quality, reliability, service, delivery terms, or long-term support.
This narrow approach can lead to agreements that seem cheaper upfront but end up being more costly or less effective over time. Skilled negotiators consider the full package, balancing cost with overall value, to secure deals that bring sustainable benefits rather than short-term savings.
Example of this Negotiation Mistake
A major multinational company, aiming to cut costs, selected a new packaging supplier based purely on the lowest bid.
They ignored critical factors like delivery reliability, material quality, and supplier responsiveness. All overlooked because price seemed king. Initially hailed as a success, the decision soon backfired: delivery delays caused manufacturing halts, quality issues led to product defects, and customer complaints surged.
Not only did operational efficiency suffer, but the cost of damages, expedited shipments, and internal friction vastly exceeded the initial savings.
Company leadership eventually had to renegotiate at a higher price with a more reliable supplier, but by then, the damage to reputation and relationships was irreversible.
How to Avoid This Negotiation Mistake
To avoid the mistake of focusing only on price, shift your mindset from cost-cutting to value-building.
Before entering any negotiation, define what truly matters (like quality, service levels, reliability, delivery time, and long-term support), not just the price tag.
Ask the right questions and evaluate the total value a partner brings to the table.
By considering the bigger picture, you’ll make smarter, more sustainable decisions that protect both performance and profitability.
21. Letting your ego drive the negotiation
Allowing your ego to take control during negotiations is a costly mistake that shifts focus from achieving a mutually beneficial outcome to simply “winning.” When pride, status, or the need to appear dominant overrides logic and strategy, negotiators may reject reasonable offers, escalate conflicts, or miss creative solutions.
This behavior often leads to broken deals, damaged relationships, and poor long-term results. Successful negotiators set ego aside, prioritize the interests of both parties, and stay focused on value and collaboration, not personal validation.
Example of this Negotiation Mistake
A company founder, steeped in pride from building his business over 25 years, entered into sale talks aiming for $10 million.
When the buyer suggested a lower valuation (around $8 million) due to outdated systems and stiff competition, the founder’s ego flared. Rather than objectively weighing the feedback, he responded defensively: How can he tell me that it’s not worth my asking price? That guy doesn’t know what he’s talking about!
His wounded pride clouded his judgment, causing him to walk away from what could have been a fair deal.
By letting ego override openness and flexibility, he lost the opportunity and the trust that could have led to a successful outcome.
How to Avoid This Negotiation Mistake
To avoid the mistake of letting your ego drive the negotiation, focus on the goal—not on being right or feeling superior.
Remind yourself that negotiation isn’t about winning; it’s about reaching a solution that works for both sides.
When you feel defensive or insulted, pause, breathe, and shift your attention back to the facts and shared interests.
By staying calm, open-minded, and grounded in strategy, not pride, you’ll make better decisions and build stronger relationships.
22. Not listening actively
Failing to listen actively is a common negotiation mistake that can lead to missed opportunities, misunderstandings, and weakened trust. When you’re too focused on preparing your next point or defending your position, you risk overlooking key information, concerns, or signals from the other side.
Active listening means giving full attention, asking clarifying questions, and showing genuine interest in the other party’s perspective. It not only helps uncover hidden needs and priorities but also fosters collaboration and strengthens your credibility as a negotiator.
Example of this Negotiation Mistake
A technology vendor entered negotiations with a state government for a major facilities management contract.
During discussions, state representatives repeatedly voiced concerns about operational responsibilities and dispute-resolution mechanisms.
But the vendor, aiming to close quickly, ignored these cues and never truly engaged with their concerns, focusing instead on pitching their solution.
As a result, the reps felt slighted and frustrated. When issues arose later, the contract lacked clarity on key responsibilities and handling conflicts, leading to blame, legal disputes, and a breakdown of the partnership.
How to Avoid This Negotiation Mistake
To avoid the mistake of not listening actively, slow down and give your full attention to the other party.
Don’t just wait for your turn to speak. Focus on understanding their words, tone, and underlying concerns.
Ask open-ended questions, paraphrase what you hear to confirm understanding, and resist the urge to interrupt or jump to conclusions.
By truly listening, you uncover valuable insights, build trust, and create solutions that reflect both sides’ priorities.
23. Assuming power lies where it doesn’t
One of the most misleading mistakes in negotiation is assuming that the person you’re talking to holds the real decision-making power. This false assumption can lead to wasted time, misaligned strategies, and failed deals when you later discover that the actual authority lies elsewhere, often with a board, legal team, or another department.
Effective negotiators take time to map out the decision-making structure, ask clarifying questions, and confirm who truly has the final say. Without this clarity, even the best proposals can stall or fall apart at the final stage.
Example of this Negotiation Mistake
When Amazon announced its plan to build a new headquarters in Queens, New York, executives believed they had obtained the necessary approvals from top officials: the Mayor, Governor, and local power brokers.
Confident in this backing, they proceeded without engaging broader stakeholder groups.
However, grassroots opposition, community leaders, and local activists held significant influence over zoning and public sentiment, yet Amazon never engaged with them.
This false assumption about where actual power resided transformed a seemingly secured deal into a public relations and political debacle.
How to Avoid This Negotiation Mistake
To avoid the mistake of assuming power lies where it doesn’t, take time to understand the full decision-making structure before and during the negotiation.
Don’t rely solely on titles. Ask questions to uncover who else influences the outcome, whether directly or indirectly.
Engage with all key stakeholders early, including those who may not be at the table but can block or sway the deal later.
By mapping out where real authority and influence lie, you can align your strategy, avoid surprises, and build stronger, lasting agreements.
24. Failing to build rapport and trust
Overlooking the importance of rapport and trust in negotiations can quickly undermine even the strongest business case. When negotiators focus solely on terms, numbers, or winning, they often neglect to connect on a human level, causing the other party to feel guarded, skeptical, or unwilling to collaborate.
Trust lays the foundation for open communication, flexibility, and long-term partnership. Without it, negotiations become rigid and transactional, and deals are more likely to fall apart or suffer post-agreement tensions. Effective negotiators invest time in building genuine rapport before diving into demands.
Example of this Negotiation Mistake
In 2001, General Electric (GE) announced its acquisition of Honeywell in a deal valued at $45 billion.
While both boards approved and regulators in the U.S. cleared the merger, GE overlooked building rapport and trust with EU regulators and member states, who held final approval power.
Despite appearing well-received in the U.S., GE failed to engage in meaningful dialogue or address concerns in Europe.
The result? The European Commission blocked the merger, citing insufficient trust and lack of rapport, particularly around antitrust and market competition issues.
The deal, once seemingly unstoppable, collapsed because GE underestimated the importance of building relationships and mutual understanding with all decision-makers.
How to Avoid This Negotiation Mistake
To avoid the mistake of failing to build rapport and trust, take time to connect with the other party before diving into the details of the deal.
Show genuine interest in their perspective, listen actively, and look for shared goals or values that can create common ground.
Trust isn’t built through logic alone. It comes from consistency, transparency, and empathy.
By being respectful, open, and responsive throughout the negotiation, you lay the foundation for stronger relationships and more successful outcomes.
25. Making too many concessions too quickly
One critical mistake in negotiations is giving away concessions too early or without securing anything in return. This often signals desperation or weakness, encouraging the other party to press for even more. In one Scotwork case, negotiators failed to define and record what was offered. Resulting in expensive wine and room upgrades slipping through unchallenged, and then continued to concede on major points because they hadn’t locked in earlier agreements.
Such behavior can lead to a breakdown in leverage, profit erosion, and a spiral of diminishing returns. Smart negotiators wait for reciprocity, attach conditions to concessions, and protect their position by moving deliberately, not hastily.
Example of this Negotiation Mistake
A large manufacturing firm once entered talks with a key supplier, aiming to reduce expenses. Eager to seal the deal, the procurement team immediately offered bigger discounts and extended payment terms.
Without insisting on reciprocal concessions like higher order volumes or longer contract duration. Despite the supplier’s initial hesitation, the team kept conceding, assuming “any deal is better than none.”
However, because their early offers were unreciprocated and unstructured, the supplier lost confidence in the collaboration and felt undervalued. As negotiations progressed, trust deteriorated.
The supplier withdrew from the discussions altogether, opting to partner with a more strategically minded competitor who respected mutual give-and-take. In the end, the manufacturer gained nothing and lost a reliable supply chain relationship.
How to Avoid This Negotiation Mistake
To avoid the mistake of making too many concessions too quickly, plan your concessions and link each one to something of equal value in return.
Don’t give anything away for free. Make it clear that every movement on your side requires movement on theirs.
Stay patient, pause before agreeing to requests, and avoid rushing to fill silence with offers.
By managing your concessions carefully, you protect your position, maintain credibility, and create a more balanced and respectful negotiation process.
26. Having unrealistic expectations
Setting unrealistic expectations in negotiations can sabotage your outcomes before discussions even begin. When you enter talks, expecting too much. Whether it’s a price that’s too low, overly optimistic delivery timelines, or terms that don’t align with market reality, you set yourself up for disappointment and conflict.
Effective negotiators anchor their expectations in solid research and real-world conditions, continuously checking assumptions against changing information. By calibrating your goals based on what’s feasible and staying flexible to adapt, you build credibility and increase the chances of reaching a sustainable agreement.
Example of this Negotiation Mistake
In 2008, Microsoft offered to acquire Yahoo for $44.6 billion, an attractive offer given Yahoo’s position at the time.
However, Yahoo’s leadership believed the company was worth much more and that it could successfully compete against Google and Facebook.
Anchored in overly optimistic future projections and ignoring current market realities, Yahoo dismissed Microsoft’s bid as undervalued.
That decision proved disastrous. Yahoo’s market value shrank dramatically over the following years, and the company eventually had to sell to Verizon in 2017 for a drastically lower price, just $4.8 billion, marking a steep decline from what seemed like a solid deal a decade earlier.
How to Avoid This Negotiation Mistake
To avoid the mistake of having unrealistic expectations, ground your goals in research, data, and current market conditions, not assumptions or wishful thinking.
Before entering a negotiation, validate your demands by comparing them with industry benchmarks, competitor offers, and what the other side is likely willing to accept.
Stay open to feedback and ready to adjust your expectations as new information emerges.
By aligning your goals with reality, you boost your credibility, keep the conversation productive, and increase your chances of reaching a successful, balanced agreement.
27. Lack of long-term thinking
Focusing solely on winning the deal without considering the long-term implications can sabotage your results well after a nego¬tiation ends. When performance goals and immediate gains dominate, negotiators often overlook future consequences. Be they relationship wear-and-tear, implementation challenges, or shifting market realities, and thus close deals that crumble over time.
Effective negotiators, instead, deliberately bring long-term concerns to the table. They evaluate not just the immediate gains but also how each agreement will play out down the line, assessing factors like long-term collaboration, implementation success, and legacy impact.
Example of this Negotiation Mistake
In 2000, Netflix co-founders Reed Hastings and Marc Randolph offered to sell their struggling DVD-by-mail business to Blockbuster for $50 million.
A deal that would have positioned Blockbuster as the leader in online rentals. But Blockbuster’s CEO at the time, John Antioco, saw no future in internet distribution and allegedly “laughed them out of the room”.
The executives failed to see the long-term shift toward streaming and placed short-term profit priorities ahead of emerging consumer trends.
As a result, Blockbuster missed a critical opportunity. Netflix went on to dominate the market, eventually reaching a valuation in the hundreds of billions, while Blockbuster spiraled into bankruptcy by 2010.
How to Avoid This Negotiation Mistake
To avoid the mistake of lacking long-term thinking, look beyond immediate wins and ask how each decision will impact your business months or years from now.
Don’t just negotiate for today. Consider future trends, evolving customer needs, and how the relationship or deal will grow over time.
During the negotiation, raise questions like How scalable is this solution or What could change in this partnership in the next three years?
By thinking ahead, you protect your long-term interests and make more sustainable, strategic choices.
28. Inflexibility during negotiation
Being inflexible during negotiation, sticking rigidly to your initial position, or refusing to explore alternatives. Can quickly stall or collapse a deal. While it’s important to have clear goals, refusing to adapt to new information, creative options, or the other party’s needs often signals unwillingness to collaborate.
This rigidity can frustrate your counterpart, shut down open dialogue, and block mutually beneficial outcomes. Skilled negotiators stay firm on core interests but remain flexible in how those interests can be met, using creativity and openness to move the negotiation forward.
Example of this Negotiation Mistake
A notable instance of inflexibility occurred in the business practices of Donald Trump, as critiqued in The Conflict Expert.
Trump’s approach, famously outlined in The Art of the Deal, often emphasized domination and an unwillingness to adapt, even when sticking strictly to his positions harmed potential collaborations.
For example, when information emerged during negotiations that threatened his interests, or when legal defenses emerged.
Trump would refuse to deviate, pressing hard regardless of changing circumstances. This rigidity occasionally led to damaged reputations, broken relationships, and failed agreements.
As one critic noted, it will only create anger, frustration, and destruction, highlighting how inflexible stances can destroy deals instead of resolving conflicts.
How to Avoid This Negotiation Mistake
To avoid the mistake of being inflexible during negotiation, focus on your underlying interests, not just your original positions.
Be willing to explore alternative solutions, adapt to new information, and ask open-ended questions that invite collaboration.
Flexibility doesn’t mean giving in; it means staying open to different paths that still meet your goals.
By showing a willingness to adjust, you create space for creative problem-solving, build goodwill, and increase your chances of closing a stronger, more sustainable deal.
29. Failing to document the agreement properly
One of the most avoidable yet costly negotiation mistakes is failing to document the agreement clearly and thoroughly. When key terms, responsibilities, or deadlines are left vague. Or worse, not written down at all, misunderstandings are almost guaranteed.
Verbal agreements and handshake deals might feel efficient in the moment, but without proper documentation, they often lead to confusion, disputes, and even legal challenges. Effective negotiators know that the deal isn’t truly done until every term is captured in writing, reviewed, and confirmed by all parties involved.
Example of this Negotiation Mistake
Castle Restoration, LLC, entered into a formal asset-sale agreement including a promissory note.
After signing, both parties verbally agreed, via a handshake, that Castle would provide additional labor and materials as a credit toward the payment.
However, this side agreement wasn’t documented.
When a dispute later arose, the court ruled that because the agreement wasn’t in writing and contradicted the written contract’s no-oral-modification clause, it was unenforceable.
Castle lost both the supplied labor and materials, and couldn’t recover the cost, despite the verbal promise.
How to Avoid This Negotiation Mistake
To avoid the mistake of failing to document the agreement properly, make it a rule never to rely on verbal commitments, no matter how clear or trustworthy they seem.
Always put the full agreement in writing, including any changes or side arrangements, and ensure all parties review and sign off on the final terms.
Take time to clarify responsibilities, deadlines, and conditions in detail.
By doing so, you protect yourself from future misunderstandings, enforce your rights if issues arise, and maintain professionalism and trust in every negotiation.
30. Ignoring timing and context in offer-making
A critical yet often overlooked mistake in negotiation is failing to consider timing and context when presenting offers. Even the most well-crafted proposal can fall flat or backfire. If delivered at the wrong moment or without regard for the other party’s situation, priorities, or external pressures.
Whether it’s pushing for a deal too early, missing key deadlines, or ignoring market conditions and internal dynamics, poor timing can signal insensitivity or desperation. Effective negotiators read the room, align their offers with the current environment, and wait for the right moment to maximize receptiveness and impact.
Example of this Negotiation Mistake
During the 1994 political crisis in Haiti, former President Jimmy Carter and U.S. officials engaged in tense negotiations with the then-military commander, General Cédras.
However, a phone call from President Clinton abruptly informed Carter that U.S. forces had already started an invasion and gave him just 30 minutes to leave the country. This sudden invasion, planned without coordination with Carter’s negotiation team, completely undermined the delicate diplomatic talks.
The misalignment in timing and lack of context awareness transformed a political negotiation into a military crisis, rendering months of diplomacy irrelevant and triggering a chaotic evacuation.
How to Avoid This Negotiation Mistake
To avoid the mistake of ignoring timing and context in offer-making, always assess the situation before presenting a proposal.
Ask yourself: Is the other side ready to hear this?
Are there external pressures or internal events that could affect how the offer is received?
Be patient, stay aware of changing dynamics, and choose your moment carefully.
By aligning your proposal with the right timing and broader context, you increase the chances of it being taken seriously and accepted.
Conclusion
Negotiations are an integral part of both professional and personal life, demanding effective strategies and awareness of potential pitfalls. This guide, compiled by the procurement tactics team, sheds light on common mistakes made during negotiations and provides valuable insights on how to avoid them.
From inadequate preparation to emotional influences and deceptive practices, the article addresses key aspects that can impact successful negotiation outcomes.
I have created a free-to-download negotiation preparation toolkit template. It’s a PowerPoint file that can help you to confidently navigate your next negotiation. I even created a video where I’ll explain how you can use this template.
Frequentlyasked questions
Why is preparation essential in negotiations?
Proper preparation ensures understanding of both your position and your counterpart’s, empowering you with confidence, power, and creative solution thinking.
How does cultural background influence negotiations?
Understanding cultural nuances aids negotiators globally, helping identify benefits and potential pitfalls, fostering better results.
Why avoid a win-lose mentality in negotiations?
Negotiations built on collaboration rather than competition lead to sustainable relationships, emphasizing openness and transparency for mutual benefits.
About the author
My name is Marijn Overvest, I’m the founder of Procurement Tactics. I have a deep passion for procurement, and I’ve upskilled over 200 procurement teams from all over the world. When I’m not working, I love running and cycling.