A Statement of Work (SOW) is a legally binding contract that defines the specific scope, deliverables, timeline, exclusions, and commercial terms of a client engagement. Typically attached to a Master Services Agreement (MSA), the SOW acts as the definitive roadmap and legal protection for delivery.
To protect against delivery overruns, every SOW must explicitly list exclusions (Out of Scope items) and client dependencies (inputs, sandbox access, turnaround times).
SOW Audit checklist
- Output Boundaries: Deliverables are documented as output artifacts, not open-ended support.
- Clear Exclusions: An explicit "Out of Scope" section is included.
- Review Limitations: Review cycles are capped (e.g. up to two rounds).
- Scope Control: Formal Change Control process is defined.
Should we use Fixed Price or Time & Materials (T&M) SOWs?+
Use Fixed Price when scope is highly defined and repeatable, which allows you to capture value efficiency. Use T&M when scope is fluid or complex, transferring the risk of volume fluctuation to the client.
What makes an SOW legally binding?+
Mutual agreement, consideration (payment for work), and sign-off by authorized representatives from both organizations, typically referencing a Master Services Agreement.