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Fixed price vs time and materials for software in Berlin 2026

Mohamed Bah·Fondateur, Kolonell
September 3, 2026
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Fixed price vs time and materials for software in Berlin 2026

Fixed price vs time and materials for software in Berlin 2026

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The verdict in three sentences

Fixed price vs time and materials is not ideological, it is a question of who carries the risk. In 2026, fixed price transfers risk to the provider but requires a locked scope, while time and materials at 450-700 EUR/day offers flexibility but hands you the steering. The average budget overrun of a poorly contracted project remains 15 to 30%, whatever the mode.

Fixed price and T&M: what each really implies

Fixed price suits a stable, documented need: the provider commits to a price and a deadline. T&M suits an evolving need: you pay for time spent, measured in sprints, and steer prioritisation. The trap is choosing fixed price on a vague need, or T&M with no internal steering capacity.

CriterionFixed priceTime and materials
PriceFixed, committed450-700 EUR/day
ScopeLocked, enforceableEvolving
Risk holderProviderClient
Change flexibilityLow (change requests)High
Client-side steeringLightStrong (Product Owner)
Agile fitDifficult2-week Scrum
Suited needStable and framedEvolving or R&D

Fixed price without a solid requirements document is not less risky: the provider simply builds a 20 to 30% safety margin into the price.

Decision grid by need maturity

The right criterion is not budget but scope clarity and your ability to steer.

SituationRecommended modeIndicative rate/priceExpected overrun
Locked, specified, mocked-up needFixed priceNegotiated firm price5-15%
Evolving need, shifting prioritiesSprint T&M450-700 EUR/dayControlled if steered
R&D, product explorationCapped T&M500-700 EUR/dayVariable
Small framed lot (<15 days)Fixed price6,000-10,000 EUR5-10%
MVP for market validationT&M or lot-based fixed450-650 EUR/day10-25%
Evolutive maintenanceT&M or retainer450-650 EUR/day5-15%

A common 2026 hybrid: discovery and MVP as fixed-price lots, then sprint T&M for evolutions once the product is stabilised.

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Mini case study

Thomas, IT director at a services SME in Berlin, hesitates on rebuilding his back-office. Scope only 60% specified. Fixed price: the provider quotes 90,000 EUR (risk margin included) but every change goes through a change request. In sprint T&M at 550 EUR/day, the estimate is 150 days, i.e. 82,500 EUR, with continuous prioritisation. He picks lot 1 as fixed price (discovery + core, 25,000 EUR), then T&M for the rest. Six-month tally: total cost 88,000 EUR, scope adjusted 4 times with no dispute, versus an estimated +18,000 EUR in change requests on a rigid fixed price.

FAQ

What is the day rate for a T&M project in 2026? Budget 450 to 700 EUR/day depending on seniority and stack, a senior full-stack profile sitting around 600-700 EUR/day. Expert or architect profiles can exceed this range.

Is fixed price truly risk-free for the client? No: fixed price protects against price overruns only if the scope is locked. On a vague need, the provider adds a 20 to 30% margin or multiplies change requests, cancelling the benefit.

What budget overrun should I expect? A poorly contracted project overruns by 15 to 30% on average. A fixed price on a framed scope drops to 5-15%, and steered T&M stays controlled if you have an available Product Owner.

Can the two modes be combined? Yes, it is even recommended: discovery and core as fixed-price lots, then evolutions in sprint T&M. This hybrid model limits risk while keeping flexibility.

Do I need an internal Product Owner for T&M? Yes, it is the success condition: without client-side steering, T&M drifts. Budget at least 0.5 to 1 day/week of availability from a decision-making business referent.

Let's scope your project. Tell us how specified your need is and your target budget: we recommend the contract mode and price accordingly. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.

Tags:#fixed price vs T&M#project contracting#day rate#agile scrum#budget overrun#project management
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Mohamed Bah

Fondateur, Kolonell

Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.