Strategy
Why We Build Fixed-Scope, Not Hourly
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.
Keep reading
How We Scope a Build Before You Commit
The scariest part of custom software is committing before you know what you’re getting. Here’s how scoping de-risks the whole thing.
Custom Build vs. Hiring a Dev Shop
The traditional agency model burned a lot of budgets. Here’s why it disappointed — and what an outcome-aligned build partner does differently.
What a Custom Build Actually Costs in 2026
A straight answer to the question everyone wants answered first — the real ranges, what drives them, and why the numbers dropped.
Got a workflow that hurts more than it should?
We’ll model what custom looks like for your business — no slides, no proposal, just a real conversation.