apply-ackerman-bargaining

Apply Ackerman Bargaining

Set a target price, open with an anchor around 65% of it, and make three further offers at roughly 85%, 95%, and a final non-round number at your actual target — using a calibrated question between each offer and shrinking the increment each time — because the specific anchor placement, decreasing increment sizes, and a precise final number together signal a genuine limit that a simple round-number final offer does not.

Why This Is Best Practice

Why best: A single opening offer followed by ad hoc counters gives the other party no structural signal about how close to your actual limit any given offer is — every counter looks the same, so there's no way for them to distinguish a real final offer from one more round of negotiation. The Ackerman model's specific structure solves this: opening well below target leaves room for several rounds, the strictly decreasing size of each successive increase (a large jump, then a smaller one, then a smaller one still) mimics what a genuinely maxed-out negotiator's offers naturally look like, and a final, deliberately non-round number (an oddly specific figure rather than a round one) reads as the result of actually calculating a true limit rather than as an arbitrarily chosen stopping point.

Chris Voss, "Never Split the Difference" (2016): Voss formalizes the Ackerman model, developed by his colleague Mike Ackerman, as a specific four-offer bargaining sequence: an opening anchor at roughly 65% of the negotiator's target price, followed by three further offers at approximately 85%, 95%, and finally the actual target price — with the final number deliberately not rounded (for instance, ending in a specific, non-round figure) to signal it is the outcome of a genuine calculation rather than an arbitrary stopping point, often paired with a small non-monetary addition at the final offer to reinforce that this is genuinely the end of the room to negotiate. Voss pairs each offer transition with a calibrated question (see apply-tactical-empathy-negotiation) rather than a bare number, so the counterpart experiences each round as a negotiated concession rather than an arbitrary escalation.