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Fixed-Price Contract
A fixed price contract contains an agreement between the parties on the final cost of the goods or services being provided, and the cost is not subject to adjustment. In contrast, with certain other forms of contracts, such as cost-plus and incentive-based contracts, the final price is calculated after making adjustments agreed upon by the parties and stated in the contract.
There are both advantages and disadvantages to the use of fixed-price contracts. Perhaps the greatest advantage is predictability. Both parties know exactly what will be paid and can plan and budget accordingly.
There can also be disadvantages to using a fixed-price contract, which varies depending on which side of the bargain a party sits. For example, consider the seller of a product, who buys raw materials from several states, then manufactures the product in a factory. Before negotiating a final price, the seller must calculate the cost of all the raw materials, labor costs, overhead, and shipping. The buyer wants a fixed-price contract so that if the price of the materials increases, the final price of the product will not go up. While this protects the buyer, it places more risk on the seller. To protect against this risk, the seller decides to price the product much higher than if a contract allowing for cost adjustments had been used. If the input prices do not increase, the buyer will have paid a premium.
Frequently Asked Questions
When should you use a fixed-price contract instead of cost-plus?
Fixed price works best when the scope is well defined and the inputs are predictable, so the seller can price the risk without guessing. Cost-plus fits better when scope is uncertain, the work is exploratory, or material costs swing widely. If you can’t describe the deliverable precisely, a fixed price usually means one side is pricing in a large cushion.
Who carries the risk in a fixed-price agreement?
The seller does. Once the price is locked, any increase in materials, labor, or overhead comes out of the seller’s margin, and the buyer pays the same either way. Sellers usually respond by padding the quote. Buyers get budget certainty and sellers get a defined ceiling on upside, so both sides are trading flexibility for predictability.
Can a fixed-price contract include price adjustment clauses?
Yes, and many do. Escalation clauses tied to a published index, change-order procedures, and economic price adjustment provisions all let a nominally fixed price move under defined conditions. That’s a middle ground between pure fixed price and cost-plus. Just spell out the trigger, the calculation, and the notice required, because vague adjustment language invites arguments later.
