Calculate your reservation price directly from your BATNA

Your walk-away point should be derived from your BATNA — not from your aspiration or your fear.

Why it works

A reservation price set emotionally (what feels acceptable) drifts under pressure; one set analytically from BATNA is stable because it is anchored to reality. The logic is: no deal is better than a deal worse than your best alternative. Converting that logic into a number before entering the room prevents the in-the-moment erosion of the walk-away point that produces bad agreements.

How to do it

1. Value your BATNA in the same units as the deal (dollars, time, quality, flexibility).
2. Set your reservation price as the point where the deal is exactly equivalent to your BATNA.
3. Write it down before you begin and commit to it — revision is allowed only if new information changes your BATNA, not because the negotiation feels uncomfortable.

Evidence

Behavioral research on anchoring and loss aversion shows that in-the-moment pressure distorts evaluation of options. Pre-commitment to reservation prices derived from BATNA counteracts this. (mechanistic)

Strict pre-commitment can be inflexible when circumstances genuinely change; the principle is to derive and commit to a reservation price, not to be rigid when new information warrants revision.

Sources

• Bazerman & Neale (1992), Negotiating Rationally

Common mistake

Lowering your reservation price during negotiation because of pressure or sunk cost ("we’ve come so far") rather than because of new information about your BATNA or the deal’s value.