For the first few years, my agency started every month at zero. Win the work, deliver it, invoice it, then wake up on the first of the month with an empty pipeline and do it all again. Retainers ended that. A base of monthly recurring revenue meant the lights were on before I sold a single new project. Here is how to build that base, starting with the clients you already have.
What is a Retainer?
A retainer is a contractual agreement where clients pay a fixed monthly fee in exchange for agreed-upon services. These contracts typically span 12 months, though shorter terms exist.
The benefits for agencies include:
- Cash flow stability
- Predictable revenue
- Better resource planning
- Reliable payment schedules
Key Strategies for Success
1. Start With Existing Clients
Target current clients who use services sporadically, every couple of months. They represent the easiest conversion path since they already trust your work.
Frame the retainer as a way to handle their ongoing needs ahead of time rather than reactively.
2. Sell Value, Not Hours
Clients care about outcomes, not effort. Instead of packaging hours, define specific deliverables and results.
The majority of clients don’t care how long you spend on a project. They care about the result.
3. Create Detailed Contracts
Your scope of work has to be specific, leaving minimal room for interpretation.
Clearly define:
- What’s included
- What incurs additional costs
- Expectations from both parties
- Engagement and payment terms
4. Demonstrate Continuous Worth
Provide monthly reports and meetings discussing project outcomes. Schedule quarterly or biannual reviews to address challenges proactively.
Show clients you’re invested in their success, not just delivering tasks.
How to move a project client onto a retainer
The easiest retainer is a project client who already trusts you. You win it by solving the problem they have the day the project ends, not by pitching a contract.
Every project finishes with a list of “we should really keep doing this”. The website goes live and now it needs content, testing and iteration. The brand lands and now it needs rolling out across everything. That ongoing need is the retainer. Name it before the project ends, while the result is fresh and the relationship is warm.
The transition is one sentence. “The launch is the start, not the finish. For a set monthly fee I will keep this growing instead of letting it go stale.” Then stop talking. You are offering to protect the investment they just made, not asking for a favour.
Three retainer models that actually sell
Pick the one that matches what the client is buying.
Access. They pay for priority and a set amount of your team’s time each month. Simple to sell and easy to deliver, but it drifts towards hourly thinking if you are not careful.
Deliverables. A fixed set of outputs every month: so many pieces of content, a set number of campaigns, a defined scope. Clear, and the client always knows what they get.
Outcome. You are paid for a result you hold responsibility for, like pipeline, conversion or revenue. The hardest to sell and the most valuable, because you are no longer a supplier, you are a partner with skin in the game.
You usually start with access, mature into deliverables, and earn the right to outcome pricing once you can prove the result.
How much should a retainer be?
Price it on the value you protect or create, not the hours you expect to spend. A retainer that holds a client’s pipeline together is worth a multiple of its delivery cost. The full method is in the agency retainer pricing guide.
The Primary Challenge
Scope creep represents the biggest obstacle agencies face. Without detailed agreements upfront, profits gradually erode through uncompensated work.
Define boundaries clearly, and enforce them professionally.
Frequently asked questions
How long should an agency retainer be? Twelve months is the standard and the one worth holding out for, because it is the term that actually smooths your cash flow. Shorter three or six month terms are fine for a nervous first-timer, with a clear review point to extend.
What is the easiest retainer to win? Convert an existing project client. They trust you, they have an ongoing need, and they are the easiest yes you will get.
How do I stop scope creep on a retainer? Write down exactly what is included and what costs extra, then enforce it politely every time. The boundary only works if you hold it.
Go deeper: Recurring retainer revenue is one of the biggest drivers of agency valuation. Read the Agency Valuation Guide to see how your revenue mix affects what your business is worth.