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Freelance Retainer Calculator

Turn hourly rate, included hours, and expenses into a monthly retainer fee.

Your figures

$US dollars
hrshours
$US dollars
%percent

Results

Recommended monthly retainer

$1,870.00

Base monthly value
$1,500.00
Expense allocation
$200.00
Profit buffer amount
$170.00
Effective hourly rate
$93.50
Included hours
20 hours

Based on your inputs, a monthly retainer of $1,870.00 covers 20 hours at your hourly rate plus expenses and a profit buffer. That is about $93.50 per included hour.

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Introduction

A monthly retainer is a recurring fee for reserved capacity, not an open tab and not a project quote. The client pays for a defined block of time or deliverables each month. You agree what sits inside that block and what does not.

Hourly billing charges after the work happens. The invoice follows the week, which is honest but hard to plan around. Project pricing sells a finished outcome for a fixed fee, which works when the finish line is clear. A retainer sits between those: a monthly price for a scope of time, paid whether that month is quiet or busy.

This calculator estimates a retainer from the hourly rate you need, the hours you include, expenses you want that client to cover, and a profit buffer. It does not produce one universally correct price. The result is an estimate. Actual pricing depends on scope, the market you sell into, client expectations, taxes, expenses, and how you run the business. This is not legal, tax, or contract advice.

How it works

Start with the hourly rate you would charge if this work were billed by the hour. Multiply it by the hours included each month. That is the base monthly value of the reserved time.

Then add monthly expenses you want this retainer to carry: tools, contractors, a share of insurance, or other costs that exist because this client is on the books. A profit buffer is applied to the sum of base value and expenses so the fee is not a break-even invoice. Ten percent is a starting point, not a rule.

The recommended retainer is those three pieces added together. Dividing it by included hours shows the effective hourly rate — what you actually earn per included hour after expenses and buffer. If unpaid sales and admin sit outside the included hours, the Effective Hourly Rate Calculator shows the rate after those hours too. If you do not yet have an hourly rate you can live on, work that out with the Freelance Hourly Rate Calculator first, then return here. Once a retainer is running, the Client Profitability Calculator can show whether that client is still profitable after the hours and extra costs they actually consume.

The calculation

Base monthly value is hourly rate times included hours. Expense allocation is the monthly expenses you entered. Profit buffer amount is that combined figure multiplied by the buffer percentage. The recommended retainer is the sum of all three. Effective hourly rate is the retainer divided by included hours. Included hours must be greater than zero; the calculator will not return a result if they are not.

A retainer is not the same as hourly billing. It buys predictable revenue: you can plan cash flow, and the client can plan a monthly cost. It also reserves capacity. Hours you set aside for this client are hours you cannot sell twice. Unused hours still cost you that reservation. Work beyond the included hours is overage, and it needs a price and a process agreed in advance. If those rules are vague, the retainer becomes unlimited hourly work at a discounted monthly cap.

Decide what the hours include. Meetings, Slack, email, revisions, and reporting eat retainers quietly. Response-time promises are capacity too. Scope creep shows up as extra deliverables that were never in the monthly list. Unused hours should have a policy: expire at month end, roll over with a cap, or convert to a defined credit. Extra-hour pricing should be written down — often the same hourly rate, sometimes higher once the reserved block is used up. None of this is legal advice. It is pricing hygiene so the number the calculator produces still matches the work you actually do.

Example

This is a worked example with sample figures. It is independent of the numbers you enter in the calculator above.

Suppose your target hourly rate is $75, you include 20 hours a month, you allocate $200 of monthly expenses to this client, and you add a 10% profit buffer.

Hourly rate times included hours is $1,500. Adding expenses gives $1,700. Ten percent of that is $170. The recommended retainer is $1,870 a month. Divided by 20 hours, the effective hourly rate is $93.50. That is the price of the reserved month, not a promise that every hour will be used or that the market will pay it.

Questions

How do I calculate a freelance retainer?
Multiply the hourly rate you need by the hours included each month, add the expenses this client should cover, then apply a profit buffer to that sum. The total is a monthly retainer estimate. Divide it by included hours to see the effective rate you are actually charging.
What should a monthly retainer include?
Name the hours, the kind of work, and what sits outside the fee: meetings, communication, revisions, reporting, and response times. If those extras are not listed, they tend to arrive unpaid. The calculator prices the hours and overhead; the agreement still has to say what those hours are for.
Should unused retainer hours roll over?
Only if you choose that policy on purpose. Rollover is a credit you still have to staff later. Many independents let unused hours expire, or roll a small cap into the next month. Write the rule down so a quiet month does not become a backlog you cannot sell around.
How should I charge for hours beyond the retainer?
Set an overage rate before the extra work starts — often the same hourly rate, sometimes higher once reserved capacity is used. Bill those hours separately, or pre-approve a larger block. Do not let overage silently expand the monthly fee.
Is a retainer cheaper than hourly billing?
Not automatically. A retainer can look cheaper per hour if unused time is included, and more expensive if you priced reserved capacity and overhead honestly. Compare the monthly fee to the hours you actually expect to work, not to an ideal week.
How many hours should a freelance retainer include?
Include hours you can actually reserve without crowding out other work. A common starting block is enough for the recurring work plus meetings, not a full-time seat. If the client needs most of your week, the retainer should look like that, not like a small add-on.

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