BriefLoft field guide
Proposal vs. contract vs. statement of work
Understand what each document does and when a growing service business may need all three.
Draft the proposalThree documents, three jobs
A proposal helps a buyer decide. A contract records binding legal obligations. A statement of work, often attached to a master agreement, defines the specific project scope and commercial details.
Names vary by business and jurisdiction, so focus on function rather than the label at the top of the page.
What belongs where
Put the problem, recommended approach, scope, timing, and price in the proposal. Put confidentiality, liability, termination, dispute handling, and governing law in a contract reviewed for your situation. Put project-specific deliverables, acceptance criteria, dependencies, and change control in the statement of work.
- Proposal: persuasion and decision clarity
- Contract: legal rights and obligations
- SOW: execution detail for a specific engagement
Avoid contradictory documents
Reference the documents that form the agreement and establish which controls if terms conflict. Keep versions organized and do not begin from an outdated scope after negotiations change.
Common questions
Can a proposal be legally binding?
It can be in some circumstances depending on wording, acceptance, and local law. Get legal advice for your situation.
Can I combine them?
Some businesses use one combined proposal and agreement for simple projects, but it should still cover the necessary commercial and legal terms.