When you hire a development partner, the contract model shapes everything: how changes are handled, who carries the risk, and how much flexibility you have. Neither model is better in general — each fits a different situation.
Fixed price
You agree on a defined scope and a set price. The partner carries the risk of the estimate being wrong.
- Works best when the requirements are well understood — a clear redesign, a defined integration, a scoped first phase.
- Watch out for rigid change processes. Every change becomes a negotiation, and partners pad estimates to cover uncertainty.
Time & materials
You pay for the time the team actually spends, usually against a monthly budget. You carry the estimate risk, but gain full flexibility.
- Works best when the product will evolve based on user feedback, or the scope genuinely can't be known yet.
- Watch out for drift. Without clear sprint goals and regular demos, budgets can disappear into work you never see.
The hybrid we recommend
For most projects, we combine both: a fixed-price discovery phase to remove the unknowns, a fixed-price first release built against that scope, and a time & materials or dedicated-team arrangement for ongoing improvement once real users are on the product.
Fix the price where you have certainty. Buy flexibility where you don't.
Questions to ask any partner
- How are changes requested, estimated and approved?
- How often will we see working software?
- What happens if the project runs over the estimate?
- Who owns the code, and when?
- How do we end the engagement if we need to?
Clear answers to these five questions tell you more about a partner than any portfolio. You can see how we answer them on our pricing page.
