Should-cost negotiation
Cost-based negotiation
Should-cost negotiation uses a structured estimate of cost drivers to guide questions, challenge assumptions and explore joint value opportunities with a supplier.
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Simply put
What it means in ordinary work
It moves the discussion from 'give us a lower price' to 'help us understand these cost drivers and where the total can be reduced'. The model is a basis for dialogue, not a verdict.
Why it matters
Cost transparency can reveal design, logistics or specification improvements that a price-only negotiation misses. It can also strengthen the buyer's confidence in a fair outcome.
A hypothetical in practice
A hypothetical buyer shares a should-cost model with a supplier and asks which assumptions are different. They identify a cheaper transport lane and reduced packaging, then agree a revised total-cost structure.
Common pitfalls
Treating the model as truth can damage trust and lead to demands that ignore supplier investment or risk.
Confidentiality matters. Share only the detail needed for the conversation and protect sensitive supplier data.
Regional lens
How this lands where you work
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As-of date for date-sensitive regional content: 5 November 2026. Read the review policy.