Retainer Agreement Format

When and how to use this letter

A retainer works when both sides know exactly what the fixed fee buys. Define the monthly scope in concrete terms — hours, deliverables, or service categories — and state what falls outside the retainer and gets billed separately. The classic retainer dispute is the client treating the professional as unlimited on-call help; a written scope boundary prevents it.

Settle the unused-hours question explicitly in the agreement: rollover, expiry, or credit. This single clause causes more retainer friction than any other, because clients feel they paid for hours they did not use while professionals blocked their calendar. Pick a rule both sides accept and write it down.

Fix the payment rhythm: fee payable in advance each month is standard for retainers, since the client is buying guaranteed availability. State the invoicing date, payment deadline, and what happens on late payment — typically suspension of services after a grace period. One non-obvious tip: include a quarterly scope review clause. Needs evolve, and a short scheduled review lets both sides adjust hours or services before resentment builds, instead of renegotiating under pressure.

Define response-time commitments if availability matters — for example, acknowledgment within one business day. End with a clean exit: thirty days' notice, handover of work in progress, and pro-rata settlement of prepaid fees. Keep monthly timesheets or work summaries even on fixed-fee retainers; they are your evidence of value delivered at renewal time.

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