A retainer without a defined boundary is not a retainer. It is unlimited access at a fixed price, and you will lose that trade every time.
TL;DR Define deliverables, not hours. State response times as a service level, not a promise. No rollover, or capped rollover. Get it in writing with a clear termination clause and review it every six months.
Deliverables beat hours
| Model | What it means | Problem |
|---|---|---|
| Hours-based | “20 hours a month” | Every conversation becomes time accounting. You are punished for efficiency |
| Deliverables-based | “Monthly report, two campaigns, weekly call” | Clear on both sides. Scales with your skill |
| Access-based | “Unlimited support” | Unbounded. Avoid unless heavily capped |
Deliverables-based is almost always right. It lets you get faster without earning less, and the client knows exactly what they are buying.
If you must sell hours, cap them explicitly and state what happens at the cap.
Define scope by writing the exclusions
Most retainer agreements list what is included and stop there. The problems all live in what is not.
Include a plain “not included” section
Included: monthly maintenance visit, priority scheduling, quarterly report, phone support during business hours.
Not included: emergency call-outs outside business hours, parts and materials, work at additional properties, projects over $X in scope. These are quoted separately.
Write the exclusions before the inclusions. It forces you to think about where the boundary actually is, which is the part that determines whether the retainer is profitable.
Rollover, and why to limit it
The client wants unused capacity to roll forward. It sounds fair and it is a trap.
What happens without a cap. Hours accumulate across quiet months, then get spent in one demanding month, and you deliver a quarter’s work for one month’s fee.
Options, in order of preference
- No rollover. Clean. “The retainer buys availability, not a stockpile.” Defensible and simple.
- Capped rollover. Unused capacity rolls one month only, maximum 25%.
- Rollover with expiry. Accumulates but expires after 90 days.
State it plainly in the agreement. Ambiguity here produces the worst conversations you will have with an otherwise good client.
Service levels, stated as ranges
Response time is the thing high-ticket clients actually buy. Make it explicit and achievable.
| Priority | Definition | Response |
|---|---|---|
| Emergency | Service down, safety issue | Within 2 hours, business hours |
| Urgent | Significant impairment | Same business day |
| Standard | Normal request | 1 to 2 business days |
| Scheduled | Planned work | As agreed |
Define the categories, not just the times. Otherwise everything becomes an emergency.
Promise what you can hit on a bad week, not a good one. A service level you miss is worse than a slower one you always meet.
Pricing it
Start from the cost of availability, not the cost of the work.
- Cost the included deliverables properly, including your non-billable time.
- Add the cost of reserved capacity. You are holding space for them, which has a real cost.
- Add margin.
- Sense-check against value. What does the client avoid or gain by having you on retainer?
Then set a minimum term. Three to six months. Retainers need time to demonstrate value and a month-to-month arrangement gets cancelled in the first quiet month.
The agreement, essentials
- Scope: included and explicitly excluded.
- Fee, billing date, and payment method. Card on file or direct debit, charged automatically.
- Term and renewal. Auto-renew with a notice period.
- Termination. 30 days written notice, either side. Never make it hard to leave, because trapped clients become bad references.
- Rollover policy.
- Service levels.
- Annual escalation clause. A stated percentage or CPI-linked adjustment, so you are not renegotiating from scratch every year.
- Change process for anything out of scope.
The escalation clause is the one people forget and then find themselves delivering 2026 work at 2023 prices.
Preventing the slow expansion
Retainer scope creeps quietly, one small favour at a time.
- Log everything you do, including the small favours. You cannot see the drift without a record.
- Report it monthly. “This month: the four deliverables, plus three out-of-scope requests we absorbed.” Visible, not confrontational.
- Address it at the review, not in the moment. “We have been absorbing about four hours a month. Let us either adjust the scope or the fee.”
- Say yes to the small thing and note it. Refusing every minor favour damages the relationship. Recording them gives you the evidence for the review.
Review every six months
Put it in the calendar at signing so it is a scheduled event rather than a confrontation.
Cover: what was delivered, what was absorbed, whether the scope still matches what they need, and whether the fee still reflects the work.
Most retainers are underpriced by the second year, because the work expanded and the fee did not.
Write the “not included” section for your current retainer clients this week. That single paragraph, sent as a clarification, prevents most of the arguments you would otherwise have next year.
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