Monthly Retainer Fee Calculator for Marketing Agencies

Use this calculator to find out how much you should charge your client for a project, based on your agency’s costs and profit margin. Avoid undercharging and build a sustainable pricing model.

How to Use This Calculator

  1. 1. Gather your team details including roles, hourly rates, and estimated monthly hours.
  2. 2. List the tools you'll use for the client / project along with their monthly costs.
  3. 3. Identify any additional expenses directly tied to providing the service.
  4. 4. Decide on your target profit margin and if you will charge separately for client reports.
  5. 5. Enter all the information into the calculator and review the real-time breakdown and pie chart.

Team Costs

Tool Costs

Additional Expenses

Profit Margin & Reporting

40%

Charge for Client Reports?

Monthly Retainer Fee

Team Cost

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Tool Cost

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Additional Expenses

$0.00

Monthly Retainer Fee

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Frequently Asked Questions

All your questions answered. And if you can’t find it here, chat to our friendly team.

How does a retainer fee work?

A retainer fee is a flat, “all-in-one” fee for a specific service you will be giving to your client. This could be SEO, content marketing, email marketing, and so on.

It usually includes a set scope of work per month. For example, if you’re a content marketing agency this could be:

1. 5x SEO-optimized blog articles

2. Distribution strategy and implementation

3. Graphic design (5x custom images for each article)

…and so on.

Any extra work outside this agreement can be billed separately or adjusted in the next cycle.

Agencies typically also keep a “retainer fee tracker” to track how much has been delivered during the month and what else is left (or what can be added on).

Most retainers are paid on a month-by-month basis, although some agencies prefer to sign contracts with their clients for a minimum of 3 months retainer.

How do I calculate my retainer fee?

Typically, here are the steps you can take to arrive at your retainer fee:

Step 1: Add up your monthly costs

List everything that goes into servicing the client, such as salaries, overhead, tools, and any other expenses.

Step 2: Set your profit margin

Decide how much profit you want to make. For example, if you aim for a 65% margin, that will factor into your pricing.

Step 3: Use the retainer fee formula

Retainer Fee = Total Monthly Costs / (1 - Desired Profit Margin)

Step 4: Calculate your fee

If your monthly costs are $6,450 and your profit margin is 65%, the formula would be:

$6,450 / 0.35 = $18,429

This method makes sure you're covering costs while hitting your profit goals, not just breaking even.

What is a typical retainer fee?

A “typical” retainer fee depends on:

  • What kind of marketing agency you are
  • Where you (or your client) is located
  • How many employees you have
  • How much other agencies like you are charging in your location

Based on our research, here’s a breakdown of typical retainer fees in the US in 2025:

1. General marketing agencies

The average monthly retainer is from $1,800 to $6,000. (Source)

2. Inbound marketing agencies

The cost can range from $2,000 to $40,000 per month or more, again depending on the scope of services and the quality of services too. (Source)

3. Small to mid-sized agencies

These typically start at about $2,500 per month for around 17-20 hours of work. (Source)

4. SEO agencies

Most charge a monthly retainer of $8,000 to $25,500 or $75 to $200 per hour, with an average of $7,500 per month. (Source)

5. Email marketing agencies

These typically charge $500 to $13,000 on a monthly basis, and the average retainer fee is $7,000 per month. (Source)

6. Digital PR agencies

Retainers can range from $5,000 to $90,000 per month, but most PR agencies typically offer a price based on the overall campaign that includes the number of deliverables, and these can start from $1,000. (Source)

7. eCommerce marketing agencies

Average retainers are around $14,000 per month, with a range from $2,500 to $50,000. (Source)

How do you structure a retainer fee?

Here are some starting points to structure your retainer fee:

Step 1: Choose a pricing model

Decide how you'll bill clients—fixed monthly fee, tiered pricing, or hourly-based retainers. Fixed fees offer stability, while tiered pricing provides flexibility based on service levels.

Step 2: Define the scope of work

List the services included in the retainer and set clear expectations. Be specific about deliverables, reporting, and any limits on revisions or extra requests.

Step 3: Set payment terms

Decide on billing frequency (monthly, quarterly, or upfront) and outline payment terms. Most agencies charge in advance to keep cash flow steady.

Step 4: Outline contract terms

Include details on contract length, renewal options, and termination clauses. Some agencies offer rolling month-to-month retainers, while others require a 3, 6, or 12-month commitment.

Step 5: Build in flexibility

Consider adding a buffer for extra work or offering add-ons for out-of-scope requests. This keeps your retainer profitable while giving clients room to scale services.

Why should you use monthly retainer agreements?

A monthly retainer gives agencies predictable revenue and long-term client relationships. Instead of chasing new projects, you get steady income while clients get ongoing support.

Retainers also save time by reducing back-and-forth negotiations. With a set agreement, clients know what to expect, and you can focus on delivering results instead of constantly selling your services.

What factors should be considered when using a retainer fee calculator?

To get an accurate retainer fee, consider your monthly costs, including salaries, tools, and overhead. Factor in your profit margin to make sure you’re not just covering costs but actually growing your business.

Also, think about client workload—some clients need more time, strategy, or hands-on work than others. If your retainer includes flexibility for extra requests, adjust pricing accordingly to keep it profitable.