PMP PROCUREMENT WALKTHROUGH
Who Hired the Dragon? Fixed-Price, Cost-Reimbursable, and Time-and-Materials Contracts
A dragon, a damaged tower, and three ways to pay. Choose the contract before you see how scope certainty and risk allocation change the answer.
The contract is also a risk decision
Contract questions rarely turn on which label sounds safest. They turn on what the buyer knows, what the seller can estimate, how payment will work, and which party is prepared to carry uncertainty.
Read the scenario for four clues: how clearly the work is defined, whether costs can be estimated reliably, how much price certainty the buyer wants, and where the consequences of an overrun should sit. A deadline by itself does not choose the contract.
Procurement and contract types
A city must restore a damaged mountain watchtower before winter. The buyer has complete drawings, measurable acceptance criteria, and a firm completion date. Several experienced dragon guilds can estimate the work reliably. The sponsor wants price certainty and wants the seller to bear most of the risk if labor or material costs exceed the estimate. Which contract type best fits this procurement?
Choose a response to continue.
The strongest response is B
Choose the contract type by matching scope and cost certainty to the intended risk allocation. Well-defined, reliably estimable work and a buyer seeking price certainty point to firm-fixed-price.
A. Useful for uncertainty, but not this situation
Cost-reimbursable contracts fit work whose costs cannot be estimated accurately enough for a fixed price. Here, the drawings, acceptance criteria, and experienced sellers make the work estimable, while reimbursement would leave more cost risk with the buyer.
B. Strongest response
The deliverable is well defined, the price can be established at the outset, and the sponsor wants price certainty. A firm-fixed-price arrangement places most performance-cost risk on the seller, subject to the agreed contract terms and authorized changes.
C. The ceiling helps, but the payment model is weaker here
A ceiling limits exposure, but time-and-materials still pays for labor at agreed rates and for materials used. It is more useful when the extent or duration of the work cannot yet be estimated reliably, which is not the central fact in this scenario.
D. An incentive does not remove buyer cost risk
An incentive can align performance goals, but this remains a cost-reimbursable arrangement. The buyer would still reimburse allowable costs, making it a poor match for the sponsor's stated desire for price certainty and seller-held cost risk.
The winter deadline can make an incentive contract or a capped time-and-materials agreement sound attractive. The stronger clues are the complete scope, reliable estimates, requested price certainty, and explicit transfer of cost-overrun risk to the seller.
Why fixed price fits the tower
A firm-fixed-price contract establishes a price that does not change merely because the seller's actual performance costs are higher or lower than expected. That gives the buyer price certainty and gives the seller a strong reason to estimate and control costs carefully. It works best when the result, acceptance criteria, and major uncertainties can be defined well enough to support a fair price.
A cost-reimbursable contract takes a different approach. The buyer reimburses allowable costs and generally pays an additional fee under the contract terms. This can fit research, exploration, or other work with uncertainty too large for reliable fixed pricing. Because the final cost is less certain, the buyer carries more cost risk and needs appropriate monitoring.
A time-and-materials contract is a hybrid. Labor is purchased at specified hourly rates, while materials are paid according to the agreement. It can help when specialized support must begin before the full extent or duration is known. The buyer should manage that flexibility with clear work authorization, frequent review, and a ceiling or not-to-exceed amount when appropriate.
No contract family is automatically best. A fixed price can create disputes when vague work is forced into an artificial box. Reimbursement can be wasteful without cost controls. Time and materials can drift without active oversight. The strongest choice fits the actual uncertainty and gives the risk to the party best positioned to manage it.
Use the five-question contract compass
When an exam scenario asks you to choose among contract types, work through these clues before reaching for a memorized slogan:
- Scope: Is the product, service, or result defined clearly enough to price?
- Estimate: Can qualified sellers predict the effort and cost with reasonable confidence?
- Payment: Is the buyer purchasing a defined result, reimbursing allowable costs, or paying for time and materials used?
- Risk: Which party will absorb most of the financial effect if the work costs more than expected?
- Control: What ceiling, incentive, review cadence, acceptance criteria, or change process keeps the arrangement responsible?
See which decision traps keep catching you
One dragon can make contract risk memorable. Thirty questions can begin to show which reasoning patterns deserve more of your limited study time.