Ackerman Bargaining System
A six-step offer-counteroffer system that uses decreasing increments and precise numbers to get your target price every time.
The Ackerman Bargaining System is a systematic offer-counteroffer method developed by Mike Ackerman, a former CIA operative who founded a kidnap-for-ransom consulting firm. It was adopted by the FBI as their standard haggling framework and Voss used it in every kidnapping he led. Harvard negotiation professor Howard Raiffa confirmed it would work in any negotiation context.
The system works by making a series of calculated offers at 65%, 85%, 95%, and 100% of your target price. Each increase is progressively smaller, convincing your counterpart they are squeezing every last cent from you. The final offer uses a precise, non-round number (like $37,893) to signal careful calculation, and includes a non-monetary item to signal you have reached your absolute limit.
The system is brilliant because it incorporates psychological principles automatically: extreme anchoring (65% first offer), loss aversion, reciprocity (each concession invites a counter-concession), and the psychological weight of precise numbers. It feels organic to the counterpart even though it is entirely systematic.
- Set your target price first; everything else follows from this number
- First offer at 65% of target creates an extreme anchor
- Decreasing increments (65%, 85%, 95%, 100%) convince your counterpart they are extracting maximum value
- Use calibrated questions and empathy between each offer to make the counterpart bid against themselves
- Final number must be precise and non-round to signal thoughtful calculation
- A non-monetary item on the final offer signals your absolute limit
- Set Your Target PriceResearch and determine your ideal outcome. This is the number you actually want to pay or receive. All subsequent calculations derive from this figure.Pro tipYour target should be ambitious but defensible. If challenged, you should be able to explain why this number makes sense.
- Open at 65% of Your TargetMake your first offer at 65% of your target price. This extreme anchor will shock your counterpart and reset their expectations. It may feel uncomfortable, but it is designed to shift the entire negotiation range in your favor.WarningDeliver the extreme anchor with empathy. Say something like 'I know this isn't what you were expecting' or use an accusation audit. An extreme anchor delivered coldly will alienate your counterpart.
- Deploy Calibrated Questions Before Each IncreaseBefore raising your offer, use calibrated 'How' questions to get your counterpart to bid against themselves. 'How am I supposed to do that?' and 'Your offer is very generous, I'm sorry, that just doesn't work for me' are powerful responses.Pro tipEach time you increase your offer, the counterpart should have made at least one counteroffer. Never negotiate with yourself by raising your offer twice without a response.
- Raise to 85%, Then 95%, Then 100%Make three progressively smaller increases: from 65% to 85% (a 20-point jump), then to 95% (a 10-point jump), then to 100% (a 5-point jump). The decreasing size of each increase signals you are being squeezed to your limit.Pro tipThe decreasing increments are the key psychological mechanism. They make your counterpart feel they have gotten every last dollar, which increases their satisfaction with the deal.
- Use a Precise, Non-Round Final NumberYour final offer at 100% of target should be stated as a precise, non-round number. Instead of $30,000, say $30,127. Precise numbers feel like the result of detailed calculation and are treated as more immovable.Pro tip$37,893 feels more final than $38,000. The specificity implies that you have done careful math to arrive at this exact figure.
- Add a Non-Monetary Item to Your Final OfferOn your final number, throw in a non-monetary item that the other party probably doesn't want (like a CD player in a ransom negotiation). This signals that you have exhausted your financial capacity and are now scraping the bottom of the barrel.Pro tipThe non-monetary item doesn't need to be valuable. Its purpose is to signal finality: you are so tapped out that you are throwing in random items to sweeten the deal.
Voss wanted a Salsa Red Pearl 4Runner with a sticker price of $36,000. He opened at $30,000 (about 83% due to the specific market dynamics), using empathy and apologies between each refusal. The dealer countered at $34,000, then $32,500. Voss held firm with 'I'm sorry, I just can't' between each counter.
Student Jesus helped his brother Joaquin buy out partner Bruno's 46% stake. Using the multi-step 'No' combined with Ackerman decreasing offers, they let Bruno's advisor negotiate against himself, dropping from 30,812 euros to 28,346 to 25,000. Joaquin then countered with a precise 23,567 euros.
Mike Ackerman, a former CIA operative, founded a kidnap-for-ransom consulting company in Miami. The FBI was constantly paired with 'Ackerman guys' during kidnapping negotiations. After retiring from the FBI, Voss met Ackerman in Miami and told him he was also using the system for business negotiations. Ackerman laughed and shared that he had run the system by Harvard's Howard Raiffa, who confirmed it would work in any situation. Voss used the system to resolve Haiti kidnappings for under $5,000 against demands of $150,000, and personally bought his Toyota 4Runner for $30,000 against a sticker price of $36,000.