Table of Contents
What Is Cost Containment?
Cost containment is the practice of making sure suppliers can’t quietly widen their margins at your expense. It targets margin creep and price creep.
- Margin creep is when a supplier’s raw material costs fall, but your price stays flat.
- Price creep is when input costs rise and the price you pay increases by more than what’s justified.
Both stem from the same imbalance: the supplier knows more about their cost structure than you do, and can use that information gap to expand margin.
What cost containment does is ask a hard question: what’s the minimum price you can pay that still gives this supplier a sustainable margin? That’s the price you should be paying. Cost containment is holding suppliers to it.
Why Does Cost Containment Matter to Purchasing Managers?
Most purchasing managers know their cost containment is usually reactive. When you’re managing a portfolio of suppliers across several categories with limited time and resources, price increases often land before you have the data to challenge them.
The way out is structural. Tie the price of every part you buy to the price of the raw materials inside it, so changes in inputs translate directly to what you pay. This is what a should-cost model does. Silent slopes become loud, and the negotiation shifts from rhetoric to arithmetic. When raw material prices fall, a should-cost model highlights the decrease and gives you the basis to approach the supplier. When raw material prices rise, the model keeps the increases tied to the portion of the part’s cost that the raw material actually represents.
Key Considerations
- Track supplier input costs continuously, not just at contract renewal. Margin creep only works when buyers aren’t watching.
- Build a should-cost model for any part where raw materials significantly drive the price, and share this model with the supplier so that the basis for change is mutual.
- Don’t aim for the lowest price possible—aim for the lowest price that still leaves the supplier with a sustainable margin. A supplier squeezed below their costs is a supply chain risk, not a saving.
