What Is an Advertising Agency Retainer Agreement?
An advertising agency retainer agreement is a contract where a client hires an agency or marketer for ongoing advertising and marketing services, not just a one-time project. Instead of paying per campaign, the client pays a recurring fee. In return, the agency supports, adjusts, and improves marketing efforts over time.
This agreement usually covers the basics, such as:
- Ongoing services, like managing creative campaigns or supporting marketing strategy
- A set monthly fee for continued work
- Basic timelines, including the duration of the agreement
- Simple communication terms, such as updates or check-ins
In most cases, the agency works as an independent contractor, not as an employee. Overall, this agreement helps both parties stay on the same page during ongoing marketing work. It also helps clarify expectations from the get-go.
When to Use an Advertising Agency Retainer Agreement
You may use an advertising agency retainer agreement template when you need ongoing marketing support that changes over time. This type of agreement is ideal when advertising efforts involve frequent updates, testing, and performance tracking. Instead of creating a new contract, both sides agree to continue working under a single set of terms.
Typically, this agreement is ideal when the work requires:
- Ongoing campaign optimization, where ads change based on results
- Recurring ad management, including budget updates and platform changes
- Continuous testing, such as a new ad copy or targeting new audiences
- Regular reporting and strategy updates to track results
- Ongoing work that adapts based on what is and isn’t driving conversions
- Consistent access to agency expertise without renegotiation
A written agreement can add legal clarity and save both parties time. You do not need a new agreement for every campaign. A set fee makes budgeting easier. At the same time, you can adjust your marketing and creative strategies as needed.
How to Write an Advertising Agency Retainer Agreement
The goal of a well-written advertising agency retainer agreement is to clearly define how ongoing marketing work will be handled. This helps both sides avoid confusion and know what to expect. Follow these steps to draft your agreement with confidence.
Step 1 – Identify the Agency and the Client
Start by listing the full names and contact details of the advertising agency and the client hiring them. Clearly identifying the parties helps confirm who is entering the agreement.
Step 2 – Describe the Advertising Services
Explain the ongoing services the agency will provide. Be as specific as possible. An ad agency may provide services like:
- Campaign management across ad platforms
- Ad creation, including copy and visuals
- Testing and optimization to improve ad performance
- Performance tracking and reporting
Step 3 – Set the Advertising Agency Retainer Fee
State the retainer fee and what it covers. This is usually a fixed monthly amount. Be sure to clearly state that the fee covers agency services only. Note that ad spend is not included and is usually billed separately from the retainer.
You can bill for ad spend and other marketing expenses not covered by your retainer agreement by using Legal Templates’s invoice template.
Step 4 – Outline the Payment Schedule
Explain when and how the payments will be made. For example, the advertising agency may require payments at the start of each month. You can state how the retainer will be replenished. State whether the payments are automatic or manual, and specify the due date. Your agreement should also address late fees and other billing terms to avoid surprises later.
Step 5 – Clarify How the Retainer Is Used
Describe how the retainer funds will be used during the agreement. This helps avoid confusion around what the client is paying for. Make sure to outline how the agency tracks its work, whether by time, tasks, or the number of deliverables.
Step 6 – Establish the Agreement Timeline
Set the start date and the agreement length. Many retainers run month-to-month or for a set term. This information can give both sides a clear timeline to follow.
Set the timeline based on the scope of services. If you want to focus on growth marketing, set up a month-to-month agreement or offer rolling 90-day terms. If your agreement will focus on brand strategy, set a minimum term of six to 12 months so that the agency has time to prove its value, as developments won’t happen overnight.
Step 7 – Define Termination Terms
Explain how either party may end the advertising agency retainer agreement. Include details about whether a notice period is required and how final payments will be handled. Also, include any specific conditions for early termination. Include any terms regarding how any unearned or unused funds will be returned.
Have a contract termination letter ready so you can end the contract when needed.
Step 8 – Include Confidentiality Terms
Add a confidentiality section that protects the private business and marketing information shared during the agreement. This helps both parties understand what information must stay private and how information can be used for the ad campaigns. Be sure to emphasize that neither party may share or misuse confidential information unless the agreement permits it.
Both parties can also sign a non-disclosure agreement (NDA) to protect information.
Step 9 – Sign the Agreement
Both parties should sign and date the agreement. This shows that both the agency and the client agree to the terms of the agreement and plan to follow them.
Sample Advertising Agency Retainer Agreement
Take a look at the sample advertising agency retainer agreement template below to see all the terms you should include in yours. Once you’re ready, use Legal Templates’s step-by-step questionnaire to complete yours and download it in PDF or Word format.
