Service agreement vs. statement of work — which one do you need?
They're not the same thing. Here's when to use each, and which clauses change.
These two documents sound similar, but they serve different purposes. Using the wrong one can leave gaps in your legal protection.
A Service Agreement (also called a master services agreement) is the overarching contract. It covers the general relationship between you and the client — payment terms, confidentiality, IP ownership, termination, and liability. Think of it as the constitution for your working relationship.
A Statement of Work (SOW) is project-specific. It defines the exact deliverables, timeline, milestones, and budget for one particular project. An SOW is usually attached to or referenced by the service agreement.
Step 1: When to use just a service agreement
For simple, one-off projects where the scope, timeline, and payment are straightforward enough to include in a single document. Most freelance projects fall into this category.
Step 2: When to use both
For ongoing client relationships where you'll do multiple projects over time. The service agreement sets the ground rules; each project gets its own SOW with specific details.
Key difference in clauses: A service agreement has broad, relationship-level clauses ("IP transfers upon full payment"). An SOW has project-level specifics ("Website redesign, 5 pages, delivered by March 15, $5,000 total").
Our recommendation: Start with a service agreement for every client. Add SOWs only when the relationship involves multiple projects. Our freelance service agreement template works great as a standalone for most projects.
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