Negotiation glossary

What is Anchoring?

Updated 8 October 2026 · 3 min read

Anchoring is the effect the first figure named in a negotiation has on the final result. Both sides adjust from that figure rather than from an objective value, so the party that opens with a credible, ambitious number tends to close nearer to it.

Kahneman and Tversky documented the effect in 1974: people asked whether Gandhi died before or after age 140 gave a higher estimate of his age at death than people asked about age 9, even though both numbers are obviously wrong. A negotiation works the same way. Say 120,000 euros first and the conversation happens around 120,000; let the other side say 90,000 first and you spend the meeting climbing.

How to set an anchor that holds

An anchor only works if it survives the first "why?". Three rules keep it credible:

  • Ambitious but defensible. Aim at the top of the range you can justify with facts (market data, comparable deals, your BATNA), not beyond it
  • Precise beats round. 118,500 signals a calculation; 120,000 signals a wish. Precise anchors move the other side further in controlled studies
  • Attach the reasons in the same breath. "Based on the three comparable roles I have on the table, 118,500" is much harder to dismiss than the number alone

How to resist one

  1. Do not respond to the number; respond to the reasoning behind it, and ask for it if it is missing
  2. State your own anchor with its justification, so there are two reference points instead of one
  3. Avoid splitting the difference right away: the midpoint of two anchors rewards whoever anchored more aggressively

A worked example

A client opens a freelance discussion at 350 euros a day, "our standard rate for this profile". The freelancer who answers "I could go down to 500" has already accepted the client's frame. The one who answers "my rate for this scope is 620, here are two recent engagements at that level, and 350 would not cover a senior profile" has set a second anchor; the deal usually lands between 520 and 580.

Anchoring examples in everyday negotiations

SituationAnchorWhy it works
Salary"Based on three comparable roles, I was expecting 118,500"Precise number, attached reasons
Freelance quoteA written quote at 750 per day with the scope listedThe document becomes the reference
Selling a carAn asking price slightly above market, with the service historyThe buyer negotiates down from your number, not from theirs
Rent renewalThe landlord's "the market rate is now 32"The tenant must re-anchor with their own facts

Precise numbers anchor better than round ones

An offer of 118,500 suggests a calculation; an offer of 120,000 suggests a guess. Research on first offers (Mason, Lee, Wiley and Ames, 2013) found that precise numbers draw smaller counter-offers than round ones, because the other side assumes the number is based on information they do not have. Use precision when you have done the work, and be ready to explain it.

Anchoring and the zone of agreement

An anchor works only inside the range the other side can accept. Inside the ZOPA, a high anchor moves the deal toward your end. Outside it, the anchor signals that you have not done your homework and the conversation stalls. That is why the anchor comes after the preparation: your reservation price and your estimate of theirs tell you where the ambitious but credible number sits.

Negosim counterparts anchor on purpose, sometimes unreasonably. The analysis report shows whether you answered the number or the argument.

Related terms

  • ZOPA: The ZOPA (Zone Of Possible Agreement) is the overlap between what one side is willing to accept at most and what the other side is willing to accept at least. Every deal that will ever be signed lies inside it; when the two limits do not overlap, there is nothing to negotiate about.
  • Reservation price: Your reservation price is the least favourable terms you will accept before you prefer your best alternative (your BATNA). For a seller it is a minimum, for a buyer a maximum; it is the one number to fix before a negotiation and never to reveal during it.
  • Concession: A concession is a movement away from your position toward the other side's, on price or on any other term. The two questions that decide whether it helps you are what you ask in return and how it is presented; a concession given for free teaches the other side that pushing works.
  • Counteroffer: A counteroffer is a reply to an offer that proposes different terms instead of accepting or refusing it. It keeps the negotiation open, signals what you need, and replaces the other side's number with yours as the new reference point.

Guides that use Anchoring

Go further

Frequently asked questions

Should I always make the first offer?
Make it when you know the value of what is negotiated at least as well as the other side, because a well-informed anchor sets the frame. Let them go first when you know little (a rare item, an unfamiliar market), because their number tells you where their zone starts.
What do I do when the other side anchors aggressively?
Name it and re-anchor immediately with your own figure and the reasons behind it, then negotiate between the two anchors rather than from theirs. Asking for a justification ("how did you arrive at that?") also weakens an anchor that has no basis.
What is anchoring in negotiation?
Anchoring is the effect of the first number put on the table: it becomes the reference point that every later offer is compared to, even when both sides know it is only an opening. A well-justified anchor pulls the final agreement toward it; a poorly justified one gets dismissed.
Where does the anchoring effect come from?
It was described by the psychologists Amos Tversky and Daniel Kahneman in 1974 (Judgment under Uncertainty: Heuristics and Biases): people estimate by starting from an initial value and adjusting too little away from it. Later studies, such as Galinsky and Mussweiler (2001), showed that first offers act as anchors in negotiations.
How high should my anchor be?
As ambitious as you can justify with facts, and no further. An anchor at the edge of what you can defend with two or three reasons moves the deal; an anchor that you cannot explain is treated as noise and costs you credibility.

Try Anchoring in a real negotiation

Pick a scenario, negotiate with an AI counterpart and see in the analysis whether you used it well.