What is a master service agreement (MSA)?
An MSA sets the legal ground rules once so each project only needs a short order form. Learn what belongs in a master service agreement, what belongs in the SOW, and what to check.
The short answer
A master service agreement (MSA) is the umbrella contract between a customer and a service provider. It settles the legal terms once — payment, liability, IP, confidentiality, termination — so every individual project can be ordered with a short statement of work instead of a fresh negotiation. The MSA is where the money risk lives; the SOW is where the work lives.
Why MSAs exist
If you sell the same service repeatedly, renegotiating liability caps and payment terms for every project is wasted time and legal cost. The MSA fixes those once and stays in force for years, while each new project is ordered by a one- or two-page statement of work.
That efficiency is also the danger: a term you accepted quickly in year one governs every project for the life of the relationship.
What belongs in the MSA, not the SOW
Keep the commercial and legal architecture in the MSA so it applies consistently:
- Liability cap and exclusions of indirect loss
- Indemnities and insurance requirements
- IP ownership and licence grants
- Confidentiality and data protection
- Payment terms, late fees, expenses and taxes
- Termination rights, notice periods, and what happens to work in progress
- Governing law, jurisdiction and dispute resolution
What belongs in the SOW
Scope, deliverables, acceptance criteria, timeline, named personnel, fees for that project, and any project-specific assumptions. Nothing legal should be invented in the SOW unless it is deliberately overriding the MSA.
The order-of-precedence clause
Every MSA should state which document wins if they conflict. The usual default is that the MSA governs unless the SOW expressly says it is amending a named MSA clause and both parties sign that change.
Without this clause, an enthusiastic salesperson's SOW can quietly rewrite your liability cap.
Termination and the tail
Check what termination of the MSA does to live SOWs. Two sensible options: everything terminates together, or existing SOWs run to completion under the old MSA terms. Decide it deliberately rather than discovering it mid-project.
Also check which clauses survive termination — confidentiality, IP, liability and payment obligations normally should.
Sample clause language
Illustrative wording, written for this guide — not copied from any real contract.
The terms of any Statement of Work shall take precedence over this Agreement in the event of any inconsistency.
Any SOW — including one signed by someone with no authority to change legal terms — can override your negotiated liability cap.
In the event of conflict, this Agreement prevails over any Statement of Work, except where the Statement of Work expressly identifies the clause of this Agreement it amends, states that it is intended to override it, and is signed by an authorised representative of each party.
Allows deliberate project-level variation while blocking accidental rewrites.
Red flags to look for
- SOWs automatically override the MSA.
- Automatic renewal of the MSA with no exit window.
- Liability cap set per-MSA rather than per-SOW when project values vary wildly.
- Customer owns all IP including the provider's pre-existing tools and know-how.
- Unlimited change requests with no mechanism to reprice or extend the timeline.
What to ask for
- Add a clear order-of-precedence clause.
- Tie the liability cap to the fees under the relevant SOW, not the whole relationship.
- Carve pre-existing IP and generic know-how out of any assignment.
- Define a change-control process with pricing and schedule impact.
- Set out exactly what happens to live SOWs when the MSA ends.
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Frequently asked questions
What is the difference between an MSA and a contract?
An MSA is a contract — a framework one. It is binding on signature for the terms it sets, but it usually does not commit either side to any specific volume of work until a statement of work is signed.
Does an MSA guarantee work?
Usually not. Most MSAs expressly say they create no minimum commitment. If you are relying on volume, put the commitment in writing as a minimum spend or exclusivity term.
Who should draft the MSA?
Whoever drafts sets the defaults, so the drafter has an advantage. If the other side drafts, focus your review on liability, IP, indemnity, payment and termination — those five clauses carry most of the risk.
How long should an MSA last?
Two to three years with a renewal decision is common. Indefinite MSAs are workable if either party can terminate for convenience on reasonable notice.
Related guides
This guide is general educational information about how these clauses usually work. It is not legal advice, and contract law differs by jurisdiction. For a decision that matters, speak to a qualified lawyer.