Fixed Price vs Time and Materials: Why We Only Do One

When a founder asks for a quote on a project, most agencies give them a range. Twelve to eighteen weeks. Sixty to ninety thousand dollars. Could be more. Depends on scope changes. You pay hourly or by sprint.

This is the industry default for one reason: it protects the agency. When projects slip, the client pays. When scope creeps, the client pays. When the agency underestimated, the client pays. The risk sits entirely on the buyer.

Silver Owl does not work that way. We quote fixed price. Fifteen thousand dollars. Eight weeks. Here is what you get. If it takes longer, that is our problem.

The reaction I hear most often is skepticism. How can you possibly quote fixed price on custom software? Every project is different. Every client has edge cases.

Here is how. First, we scope ruthlessly before signing anything. A proper scoping conversation takes two to five hours and produces a document with explicit deliverables, explicit out-of-scope items, and clear acceptance criteria. If we cannot scope it, we do not sign it. That alone filters out half the projects that go sideways in traditional shops.

Second, we build with tools that compress the unknown. AI-augmented development, proven boring technology, reusable patterns. The weeks an old-school shop spends on boilerplate, we spend on the features that actually require thought. This converts what used to be variance into predictability.

Third, we eat the overruns. If week six arrives and we are behind, we work longer hours. We do not send change orders. We do not blame the spec. We finish.

The deal does have one hard rule. Scope changes after signing require a change order. Not a guilt trip, not a slow slide, a formal decision point. Client wants to add a feature? Great. Here is the revised scope, price, and timeline. Sign it and we proceed. This is how you keep fixed-price contracts from becoming accidental time-and-materials projects.

What does the client get? Predictable budget. A partner who wins when they ship fast, not when they drag. No billable-hour incentive to over-engineer. And a clear contract that both sides understand.

What does Silver Owl get? Better clients. Founders who have done their homework. Projects we can actually finish on time because we said no to the ones we could not.

Time-and-materials has its place — staff augmentation, indefinite ongoing work, R&D where you genuinely do not know the scope. For building a product, fixed price aligns incentives. Everything else is transferring risk to whoever has less information. That is usually the founder.

If an agency will not quote you fixed price, it is because they have learned not to trust themselves. That should tell you something.