BATNA (best alternative to a negotiated agreement)
BATNA, the best alternative to a negotiated agreement, is what a party will actually do if the current negotiation fails. For a buyer, that might be awarding to a qualified second source, making the part in-house, or redesigning it out. Negotiating power comes from this alternative: the cheaper and more credible your walk-away, the less any single supplier can extract.
Examples
Qualified second source: An incumbent quotes $18.40 for a machined housing at 60,000 units per year. The buyer has already completed first article approval at a second shop quoting $16.90 with a 6-week transition. The incumbent settles at $17.20, because the alternative is real and both sides know it.
Weak BATNA, different tactics: A buyer faces a 9% increase on a sole-sourced sensor with 40 weeks of requalification time. Rather than bluffing, the buyer concedes part of the increase but trades it for a 24-month price lock and committed capacity, while starting second-source qualification for next year.
Should-cost as a fallback position: With no second source ready, a buyer builds a bottom-up model showing $11.80 against a $14.60 quote and negotiates to $12.90 by walking through material and cycle-time assumptions line by line.
Definition
BATNA is the single biggest determinant of negotiation outcomes, and it is set before anyone sits down at the table. A buyer who has run real competitive bidding and holds a qualified alternative negotiates differently from one who is sole-sourced with tooling locked at the incumbent. Suppliers can usually tell which one they are facing.
Strengthening BATNA is concrete work, not posturing. Qualify a second source before you need one (the case for dual sourcing), keep tooling rights and drawings transferable, and build a validated should-cost model so you know what a competent alternative would charge before anyone quotes. A should-cost is not a full substitute for a real second source, but it converts "we think this is high" into a defensible position.
Your BATNA also defines your reservation point: the worst deal you will accept rather than walk. That point, combined with the seller's floor, bounds the zone of possible agreement. The common failure is treating BATNA as a bluff. If you are not actually prepared to move the business, experienced suppliers will test the threat, and once tested and found empty, your position is worse than if you had never made it.
Related Terms
ZOPA (zone of possible agreement)
Best and final offer (BAFO)
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