After $3 billion in negotiations, I can tell you with certainty what costs most B2B negotiators the most money. It is not a lack of tactics. It is not poor anchoring. It is not failing to research the counterpart.
It is negotiating in percentages instead of dollars.
Why Margin Percentages Mislead You
Here is the version of this that I have watched play out hundreds of times. A negotiator fights hard to protect their margin percentage. They hold at 35%. They feel like they won. They walk away satisfied.
And they left real money on the table.
Here is the math. A 20% margin on $1,000,000 in revenue is $200,000 in gross profit. A 35% margin on $400,000 in revenue is $140,000. The higher-percentage deal just put $60,000 less in your pocket.
Margin percentage tells you efficiency. Absolute dollar profit tells you impact. These are different questions. When you use the percentage as your negotiating goal, you will consistently optimize for the wrong one.
The Specific Way This Plays Out at the Table
The percentage trap shows up most often in three situations.
The thin margin falloff. You see an 18% gross margin and it feels uncomfortable. You are used to 25%. So you push back, the deal stalls, and you walk away. But 18% on $3M in revenue is $540,000. Your 25% deal on $900K is $225,000. You just said no to $315,000 in additional gross profit because a percentage number made you uncomfortable.
The percentage anchor. You go in saying “we need at least 30% margin.” The counterpart offers terms that would land you at 22%. You hold firm on 30%. Meanwhile, the volume they’re offering at 22% would add more absolute dollars to your P&L than anything you’ve done at 30%.
The cross-scenario comparison error. You compare margin percentages across different deal structures without accounting for volume. A 30% margin deal and a 20% margin deal are not directly comparable without running the full dollar model.
The Fix: Two Numbers, Not One
Before any negotiation, run two numbers. What is the margin percentage? And what is the absolute dollar gross profit? Then ask which one should be driving your strategy.
The negotiators who consistently outperform carry a dollar model into every conversation. When the other side makes a move, they evaluate it against that model — without doing math under pressure.
You cannot take a percentage to the bank. Negotiate for dollars.
Ken Trent is the founder of the Academy of Business Negotiations. He has managed more than $3 billion in B2B negotiations and added over $100 million in net profits for his clients. negotiationsacademy.com
