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Why We Build Fixed-Scope, Not Hourly

David Chen · CFO·November 14, 2024·5 min read

How a software partner charges tells you whose risk they’re taking. Hourly billing puts the scope risk on you — if the build takes longer, you pay more. Fixed scope puts that risk on the builder. We build fixed-scope on purpose, and the reasoning matters for anyone evaluating a custom build.

The problem with hourly

When a builder bills by the hour, efficiency works against them — the longer it takes, the more they earn. You’re also signing a blank check: the final cost is whatever the hours add up to, which you don’t control. And scope creep becomes the business model, because every change is more billable time. (See Custom Build vs. Hiring a Dev Shop.)

What fixed scope changes

We agree on what we’re building and what it costs, up front. If it takes us longer than expected, that’s our problem, not your invoice. Our incentive flips: we’re now motivated to be efficient and to scope accurately, because we carry the overrun risk. Your interests and ours point the same direction.

What it requires

Fixed scope only works with disciplined scoping up front — which is why we invest so much in the scoping conversation before anything is signed. You can’t fix a price on a vague target. The tight one-page plan is what makes the fixed price possible. (See How We Scope a Build Before You Commit.)

Why this is the right model for you

A fixed price you approve before the build means you can make the decision with confidence: you know the cost, the timeline, and the outcome before you commit a dollar. That certainty — not the lowest hourly rate — is what actually protects your budget. (For the market ranges, see What a Custom Build Actually Costs in 2026.)

About the author

David Chen

CFO · FusionSales.ai

David runs finance at FusionSales.ai. He’s built ROI models for software investments at three growth-stage SaaS companies before joining the team.

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