Time & Materials vs. Fixed Price
Time & materials bills for actual hours worked plus expenses, while fixed price charges a set fee for a defined scope of work.
Why It Matters
Choosing the wrong pricing model leads to budget overruns (T&M) or underscoped deliverables (fixed price) — matching model to project type is critical.
How It Works
Time & materials works best for evolving or exploratory projects where scope is uncertain. Fixed price works best for well-defined projects with clear deliverables. Hybrid models cap T&M hours or add change-order fees to fixed-price contracts.
Real-World Example
A company uses fixed-price for a website redesign with a clear spec, and T&M for ongoing ad management where scope shifts monthly.
Common Mistakes
Using fixed price for projects with unclear or evolving scope
Not capping T&M engagements with a maximum budget
Related Terms
A detailed description of the tasks, deliverables, timeline, and boundaries for a specific project or engagement.
A contract where a client pays a recurring fee to secure ongoing access to a service provider's time and expertise.
A formal contract document that defines the full terms of an engagement including scope, deliverables, timeline, pricing, and acceptance criteria.
Time & Materials vs. Fixed Price FAQs
Which pricing model is better for ongoing marketing work?
Retainer or T&M models work best for ongoing marketing because scope naturally fluctuates month to month.
Can you switch from T&M to fixed price mid-project?
Yes, once the scope stabilizes after a discovery phase, many teams transition from T&M to a fixed-price agreement for the execution phase.
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