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Retainer

A retainer is money paid in advance to secure your availability or to draw against for ongoing work. Unlike a deposit, it is not part of the price of one job.

Example

A $2,000 monthly retainer covering up to 12 hours, with extra hours billed at the standard rate.

Also called a retainer fee, a monthly agreement, or an advance on fees.

Set up a recurring invoice

What it means in practice

A retainer is not a deposit. A deposit is part of the price of one job, credited at the end. A retainer is a balance the client tops up and you draw down as hours are used, or a fee that reserves your time whether or not it is used.

Say which of the two you mean in writing, along with what happens to an unused balance.

Covered in full in the guide to deposit invoices.

Four months of a monthly retainerEight hundred and fifty invoiced on the first of each month for up to twelve hours. September used nine, October twelve, November seven, and December went three hours over.A RETAINER, MONTH BY MONTHHarbor Property Group · 850.00 on the 1st · up to 12 hours includedSep 2026invoice 850.009 of 12 hours usednothing outside the scopeOct 2026invoice 850.0012 of 12 hours usednothing outside the scopeNov 2026invoice 850.007 of 12 hours usednothing outside the scopeDec 2026invoice 850.0012 of 12 hours used+3 hrs billed extraThe invoice does not move. November was quiet and it is still 850.00: the client is buying availability, nothours.December ran three hours over, so those three are a separate line at the agreed hourly rate rather thanquietly absorbed.
The month repeats and the invoice repeats with it. What changes is whether the work was inside the agreement or beside it.

Where it shows up on the paperwork

On an agreement it names the amount, the period, what it covers and what happens to unused time. It is then billed as a recurring invoice rather than as a one-off deposit.

What goes wrong

  • Calling a deposit a retainer, which makes the paperwork and the accounting confusing.
  • Not saying whether unused hours roll over, which is the only question anyone asks in month three.
  • Letting the scope grow inside the same fee until the retainer is losing money.

Common questions

What is the difference between a retainer and a deposit?

A deposit is part of the price of one job, credited at the end. A retainer holds your availability or is drawn down against hours, and is topped up as it is used.

Should retainers roll over?

Decide before you sign and write it down. Rolling over is generous and can build a large unpaid obligation; not rolling over is cleaner and needs saying up front.

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