Fixed price or time and materials?
Updated: 2026-09
A fixed price gives budget certainty and requires a clearly defined scope. Time and materials gives flexibility and shifts risk to the client. The right choice follows one question: is the scope genuinely clear at the start?
This question is usually understood as a price question and is a risk question. Under a fixed price the provider carries the risk that effort exceeds the plan. Under time and materials the client carries it.
Because risk has a price, a fixed price for the same scope is never the cheaper option — it contains a buffer. Getting budget certainty in return is a fair deal. Demanding a fixed price for an unclear scope gets you either a large buffer or a quote later corrected through change requests.
Head to head
| Criterion | Fixed price | Time and materials |
|---|---|---|
| Budget certainty | High, the amount is fixed in advance | Low, it emerges as work proceeds |
| Flexibility on changes | Low, changes are change requests | High, direction can change at any time |
| Risk allocation | With the provider | With the client |
| Precondition | A clearly defined scope | Trust and continuous steering |
| Effort before start | High, scope must be sharpened | Low, a fast start is possible |
| Provider incentive | Deliver efficiently | Work carefully, but without time pressure |
When Fixed price wins
- —The scope can be bounded and described in advance.
- —Budget certainty matters more than flexibility along the way.
- —You do not want to be occupied with continuous steering.
When Time and materials wins
- —The scope cannot be seriously determined at the start, as in research or modernisation.
- —Priorities will change during the project.
- —You have the capacity to steer and prioritise the work continuously.
Our take
Our view: where the scope can be bounded, we work to a fixed price — the more honest route, because it places the risk where it can be judged better. Where the scope cannot be seriously determined at the start, a fixed price would be either overpriced or unrealistic, and then we say so.
Often the best solution is a combination: a short analysis phase billed by effort, at the end of which a fixed price for delivery is set. The scope is then determined with knowledge of the situation rather than guessed.
Parent service: IT Consulting
Matching offers
IT strategy & roadmap
An IT strategy answers which technical investments advance your business goals most — and in what order. The result is a prioritised roadmap that turns a diffuse wish list into an executable plan with clear action areas and milestones.
Next.js web application at a fixed price
A bespoke web application on Next.js — fast, strong on SEO and maintainable, with a clearly bounded feature set and a binding fixed price. The result is a production-ready application without the usual cost surprises of open-ended hourly billing.
FAQ
Is a fixed price not always more expensive?
For the same scope, yes, because it contains a risk buffer. In return the amount is reliable — and in many projects predictability is worth more than the buffer costs.
What happens with change requests under a fixed price?
They are handled transparently as a change request with its own frame. The mistake would be absorbing them silently — that leads to disputes or poor work.
How do I spot an unrealistic fixed price?
By a quote given without clarifying scope first. Anyone naming a fixed price without questions has either guessed or is planning change requests.