Agency Contracts Explained: MSA, SOW, Kill Fees and More

Why agency contracts deserve attention

A contract is not a sign of distrust. It is a shared memory of what both sides agreed when they were optimistic and focused. Most agency disputes arise from unclear expectations about scope, ownership, payment or ending the relationship, and all of those can be addressed in writing at the start. This guide explains the common documents and clauses in plain language. It is general information, not legal advice. Laws differ by country and region, so have a qualified lawyer review any agreement that matters.

The document stack: MSA, SOW and others

Many agencies use two layers. A master services agreement (MSA) sets the general terms that apply across the relationship: payment, confidentiality, intellectual property, liability, termination and dispute resolution. A statement of work (SOW) describes one specific engagement: what will be done, by when, for what price. The SOW refers back to the MSA. This saves renegotiation: each new project needs only a short SOW.

Check the order of precedence clause. If the MSA and an SOW conflict, which one wins? Also look for related documents such as a data processing agreement, a non-disclosure agreement and a statement of any authority the agency has to commit your money.

Scope of work and deliverables

The scope of work describes what is included and, just as important, what is not. It lists tasks, deliverables (with quantity, format and due date), assumptions, client responsibilities and acceptance criteria. Vague wording such as ongoing support or best efforts invites disagreement. Add explicit exclusions where misunderstandings are likely, for example media spend, translation or additional markets.

Change orders and revision rounds

No project goes exactly to plan. A change order is a written agreement to adjust scope, cost or schedule. It stops scope creep because every addition is estimated and approved before work starts. Revision rounds define how much feedback is included. Spell out what counts as a round, who gives feedback and what happens when more rounds are needed.

Fees, expenses and payment

Specify the fee model (fixed, retainer, hourly, percentage of spend or a mix), invoice timing, payment terms and late payment consequences. Clarify which third-party costs are passed through, whether a markup applies and what approvals are needed. For media buying, check whether the agency buys as agent on your behalf or as principal in its own name, because that affects who is liable to the media owner and how discounts and rebates are handled.

Intellectual property and ownership

Contracts should say who owns the final work, the underlying files, any pre-existing agency material and third-party elements such as fonts, stock images and music. Common approaches transfer ownership of final deliverables to the client on full payment while the agency keeps its tools and general know-how and the right to show the work in its portfolio. Rules differ by country; in the United States the work made for hire doctrine applies only in specific situations and needs written agreement for commissioned work. Check licensing limits on stock and talent usage, such as territory and duration.

Confidentiality and competitive conflicts

A non-disclosure agreement or confidentiality clause protects sensitive information. Define what is confidential, how long the duty lasts, and what happens to information at the end. If the agency works with competitors, discuss conflict safeguards: separate teams, restricted access, or category exclusivity for an agreed period.

Data protection and security

If the agency handles personal data about your customers or employees, data protection law may require a written agreement setting out the purposes, security measures, subcontractors and return or deletion at the end. Ask where data is stored, who has access and how incidents are reported. Requirements differ by region, so check local law.

Warranties, indemnities and limitation of liability

Warranties are promises, such as that the agency has the right to use the materials it supplies. An indemnity is an agreement to cover specified losses, often claims that creative work infringes someone's rights. A limitation of liability clause caps the amount one party can be required to pay, sometimes by reference to fees paid. These clauses can look dense, but they decide who bears the cost if something goes wrong. Make sure both sides understand them, and notice which risks are excluded from any cap.

Term, termination and kill fees

State how long the agreement runs and how it ends. Termination for convenience lets a party leave with notice, without proving a breach, and retainer contracts often include a notice period. Termination for cause applies to serious breaches and may involve a chance to remedy. A kill fee compensates the agency if you cancel a project partway through; define its amount or formula. Describe what happens on exit: payment for work done, handover of files, accounts and documentation, and return of confidential materials.

Authority and approvals

If the agency will buy media, sign contracts with suppliers or speak publicly for you, define its authority in writing. Set spending limits, approval steps and who in your company may give instructions. Clear authority limits protect you from commitments you did not intend and avoid disputes about apparent authority.

Force majeure and disputes

A force majeure clause deals with extraordinary events outside anyone's control. Read what events are listed and the notice requirements. A dispute resolution clause explains how disagreements are handled: escalation to senior contacts, mediation, then courts or arbitration, under a named governing law. Choosing a method in advance is far cheaper than inventing one in the middle of an argument.

A contract checklist

• Parties named correctly, with legal entity names.
• Scope, deliverables, assumptions and exclusions.
• Fees, payment dates and third-party costs.
• Change process and revision rounds.
• Ownership of work, files and accounts.
• Confidentiality and conflicts.
• Data protection terms.
• Liability and indemnities.
• Term, notice, kill fee and exit duties.
• Authority limits and approval rules.
• Governing law and dispute process.

Key takeaways

Treat the contract as a plan for the relationship. An MSA plus SOW structure keeps terms consistent while allowing flexibility. Pay particular attention to scope, change handling, ownership, liability and exit. Ask questions about anything unclear, and get a lawyer to review the final text.

Frequently asked questions