Why is fixed price usually more expensive than time & material?

Fixed price is more expensive because the studio assumes the risk. If specs are incomplete or requirements change, the studio loses money. That's why a risk premium is built into the price. Time & material is fairer when requirements are unclear, because you pay only for what was actually done.

Can a time & material project run forever?

Yes, if boundaries aren't set. A honest studio gives a calendar plan, reports weekly on delivered work, and stops at the agreed end date. Scope expansion is negotiated separately, not silently added.

How long is a discovery phase?

One to four weeks, depending on complexity. The team learns the business requirements, architecture, risks, and estimates the main project. Discovery usually costs five to fifteen percent of main development.

What if new requirements appear during fixed-price development?

New requirements are scoped and estimated separately. If they're in the original spec - included in fixed price with no extra charge. If they're additions - estimated and priced as a change order or extension.

Fixed Price vs Time & Material: Choosing the Right Payment Model

Fixed Price: When the price is set upfront

Fixed price is when both sides agree on the final project cost before development starts. The studio commits to delivering the agreed scope within budget. This model works honestly when requirements are stable, the scope is well-understood, and the specification is detailed enough. If you know exactly what needs to be built and it won't change dramatically, fixed price protects your budget. However, a detailed specification is essential - vague or incomplete requirements often lead to disputes about what's included.

Time & Material: When requirements evolve

Time & Material means you pay for actual hours worked and resources used. Development gets flexibility: requirements can change as you learn, you see weekly progress, and costs adjust based on real complexity. This model is honest when you don't fully understand the solution yet, or when the market demands rapid iteration. With T&M, you pay more for uncertainty, but you see exactly where the money goes. The studio commits to efficient work, and you commit to clear requirements.

Understanding the risks for your business

Fixed price's main risk is an incomplete specification. If requirements turn out to be incomplete or change, the studio either works at a loss or refuses to take on additional changes, leaving you stuck between quality and delivery. You know costs upfront, but renegotiating mid-project is painful. Time & Material has a different risk: you don't know the final cost and depend on the team's skill to estimate accurately. A poor studio might spend twice the necessary hours, and you'll pay for it. A dishonest client might expand scope infinitely while the project never closes. A reputable studio manages scope carefully and delivers within the agreed timeline.

Hybrid models that work in practice

In reality, a smart approach is: discovery phase on Time & Material (one to four weeks), where the team understands requirements, risks and technical challenges. Once clear, both sides agree on fixed price for main development. This protects both: you don't pay for guessing on unclear work, and the studio doesn't price blindly. Discovery is affordable but gives clarity, and fixed price development becomes honest and calm. Many seasoned clients prefer this approach.

Choosing the right model for your project

Three factors matter: requirement stability, vision clarity, and your comfort with uncertainty. Clear requirements and stable specs - fixed price. Still figuring out the solution, uncertain about details, expecting changes - time & material or hybrid. Ask yourself honestly: "Do I know exactly what to build?" If yes, fixed price saves money. If no, time & material saves stress, and hybrid saves both. S2 Digital helps clients choose the model that fits their project, and often recommends hybrid as the optimal solution.