How to price retainers at your email marketing agency

Key takeaways

• Price for profit, not just hours. Your retainer must cover all your costs, including team time, software, and overheads, and leave a healthy margin for reinvestment and profit.
• Move beyond the hourly rate. The most profitable agencies price based on the value they deliver and the outcomes they drive, not just the time spent.
• Structure retainers with clear scope. Define exactly what's included to prevent scope creep and ensure you're paid for extra work.
• Know your numbers inside out. Calculate your true cost of delivery, including your desired salary and profit, to set a minimum viable price for each retainer tier.
• Communicate value, not tasks. Frame your pricing around client goals like increased revenue, brand growth, and saved time, not just a list of services.

Pricing your services is one of the hardest parts of running a marketing or creative agency. Get it wrong, and you work long hours for little reward. Get it right, and you build a profitable, sustainable business that can grow.

For many agencies, the retainer model is the best path. It gives you predictable monthly income. It helps you plan your team's workload. And it builds deeper, longer-term relationships with clients.

But how do you set a price that's fair to you and attractive to clients? This guide breaks down agency retainer pricing into simple steps. We'll cover how to calculate your costs, different pricing models, and how to talk about price with confidence.

What is a retainer model for an agency?

A retainer model is a fixed-fee agreement where a client pays you a set amount each month for ongoing services. Instead of billing for each project or hour, you provide a defined package of work regularly. This gives your agency predictable revenue and allows the client to budget easily.

For an agency, a typical retainer might include a set number of deliverables, strategic sessions, management time, and reporting. The client knows what they're getting, and you know what you need to deliver.

This is different from project pricing. Project pricing is for one-off work. A retainer is for continuous, recurring work. The retainer model builds stability. It turns your agency from a project-based freelancer into a true business partner.

Why do most agencies get retainer pricing wrong?

Most agencies underprice their retainers because they only account for direct labour costs. They forget to include software subscriptions, management time, profit, and the cost of winning the client. This leads to burnout and limits growth because every new client just means more work, not more profit.

A common mistake is basing price solely on an hourly rate. You might think, "This work will take 20 hours a month at £75 per hour, so I'll charge £1,500." This ignores the real cost of running your business. Your £75 hourly rate needs to cover your salary, taxes, office costs, software, and more. The actual cost of that hour is much higher.

Another error is not defining scope clearly. Without clear boundaries, clients will ask for "just one more quick thing" every week. This scope creep eats into your margin. Your profitable monthly retainer quickly becomes a loss-making project because you're doing extra work for free.

In our experience working with agencies, the ones who struggle with profitability often have poorly priced retainers. They are busy but not wealthy. Specialist accountants for agencies can help you audit your pricing and find those hidden profit leaks.

How do you calculate your minimum profitable retainer price?

Calculate your minimum profitable price by adding up all your business costs, your desired salary, and a target profit margin, then dividing by the number of billable hours you have available. This gives you a baseline hourly rate to use in your retainer calculations.

First, know your annual costs. This includes everything: salaries (including your own), freelancer fees, software, office rent, insurance, marketing, and accounting fees. Let's say your total annual costs are £150,000.

Next, decide on a target profit. A healthy agency aims for a net profit margin of 15-20%. On £150,000 of costs, that's an extra £22,500 to £30,000 for profit. So your total needed revenue is £172,500 to £180,000.

Now, calculate your billable hours. If you have one full-time employee, they might have 1,600 billable hours in a year (40 hours/week x 40 weeks, allowing for holiday and admin). Divide your total needed revenue (£180,000) by total billable hours (1,600). Your baseline hourly rate is £112.50.

Use this rate to price your retainer. If a client needs 20 hours of work per month, your starting price is 20 x £112.50 = £2,250 per month. This is your break-even point before any value-based pricing. This is the core math behind smart agency retainer pricing.

What are the different models for monthly retainer pricing?

The three main models are the hours-based package, the value-based tier, and the outcome-based agreement. The hours-based package is the simplest, defining a set number of hours for a fixed fee. The value-based tier offers different service levels at different price points. The outcome-based agreement ties some fee to specific results.

The hours-based package is easy to understand. You sell a block of time. For example, 30 hours per month for £3,000. This works well when starting out. It protects you from scope creep because extra work means buying more hours.

Value-based tiers are more common for growing agencies. You create packages like Silver, Gold, and Platinum. Each tier includes more services, more strategic input, or faster turnaround. You price based on the perceived value to the client, not just the hours involved.

Outcome-based pricing is advanced. You might have a lower base retainer plus a bonus for hitting agreed targets. This aligns your success with the client's success. It requires strong trust and clear measurement. You can learn more about aligning goals in our guide on agency financial strategy.

How do you structure a retainer agreement to prevent scope creep?

Structure your retainer agreement with a detailed scope of work document. This document lists every deliverable, meeting, and revision included in the monthly fee. It also clearly states what is not included and how extra work will be billed.

Your scope document should answer these questions. How many deliverables are included per month? How many rounds of revisions are allowed? How many strategy calls or check-ins are included? What is the turnaround time for standard requests?

Most importantly, define the exclusions. State that work outside the agreed scope will be quoted separately and requires written approval. This could include new projects, major strategic shifts, or work outside normal business hours.

Having this in writing protects your margin. It turns difficult conversations about extra work into simple references to the agreement. This clarity is a sign of a professional agency. It shows you value your work and your time.

What profit margin should agencies target on retainers?

Agencies should target a gross profit margin of 50-60% on their retainer work. Gross margin is the money left after you pay your direct team and freelancers. This margin needs to cover your overheads and leave a net profit.

Here is how the math works. If you charge a client £5,000 per month, and the direct cost of your team's time is £2,000, your gross profit is £3,000. Your gross margin is 60% (£3,000 / £5,000).

From that £3,000, you pay your overheads like rent, software, and marketing. What's left is your net profit. A well-run agency aims for a net profit margin of 15-20%. This is the money you can reinvest or take as owner profit.

If your margins are lower, you are either undercharging or your delivery costs are too high. You need to review your pricing or your operational efficiency. Tracking this is crucial. You can use our free Agency Profit Score to benchmark your margins.

How do you communicate retainer value to justify your price?

Communicate value by focusing on client outcomes, not agency tasks. Frame your retainer as an investment that solves a problem or achieves a goal. Use language about results, growth, and partnership, not hours and deliverables.

Instead of saying "10 hours of content creation," say "A consistent pipeline of high-quality content to build your authority and attract qualified leads." Instead of "Monthly reporting," say "Clear insights into what's working so we can double down on success."

Use case studies and social proof. Show how other clients achieved their goals with your retainer model. Quantify results where possible, like "increased lead volume by 30%" or "reduced cost per acquisition by 25%."

Present your pricing confidently. Explain that the retainer model provides them with predictable costs and your agency with the dedicated focus to deliver great results. This partnership approach justifies a premium compared to unpredictable project fees.

When should you increase your retainer prices?

You should review and potentially increase your retainer prices at least once a year. Regular increases account for inflation, rising software costs, and your growing expertise. The best time is during an annual review with an existing client.

Signals that you need to increase prices include consistently exceeding scope, your costs rising, or your results improving significantly. If you now deliver twice the value, your pricing should reflect that.

Communicate increases clearly and early. Give clients 60-90 days notice. Explain the reason, such as increased operational costs or enhanced service offerings. Frame it as a natural part of a successful partnership.

Some clients may leave over a price increase. This is normal and can be healthy. It frees up capacity for clients who value your work at its true worth. Holding onto underpaying clients stifles your agency's growth and profitability.

How do you handle a client who wants to negotiate your retainer price?

Handle negotiation by understanding what the client is really asking for. Often, they are testing your confidence or seeking better value, not just a lower price. Be prepared to clarify your value, adjust the scope, or stand firm.

First, listen. Ask why the price is a concern. Is it a budget issue? Do they not see the value? Understanding their objection lets you address the real problem.

If budget is tight, propose a smaller scope. Create a "starter" package with fewer deliverables or less strategic time. This protects your hourly rate and margin while getting them on board. You can always scale up later.

Never just cut your price without cutting scope. Discounting teaches clients to devalue your work. It sets a bad precedent. If the value is clear and the scope is right, be willing to walk away. The right clients will pay for quality. For more on commercial confidence, see our insights on agency growth.

Getting retainer pricing right is a fundamental skill for a sustainable agency. It moves you from trading time for money to building a valuable, predictable business.

Take our free Agency Profit Score to see how your pricing and profitability stack up. You'll get a personalised report in five minutes.