Why the retainer profitability calculator matters
Retainers rot slowly — the fee stays flat while the scope quietly widens, and nobody notices until the delivery team is permanently over capacity. This page turns that decision into a handful of inputs you can defend in a budget review: volume, unit cost, rate of adoption, and time. The output is a planning baseline, not a promise — it tells you whether the idea deserves a vendor quote, a pilot, or a pass.
- • Biggest swing factor: hours delivered versus hours priced, the core leak
- • Second-order factor: discounting against rate card at signature
- • Often ignored: client mix, since one heavy account can absorb a whole team
What actually changes the answer
hours delivered versus hours priced, the core leak moves this number first, then discounting against rate card at signature. Run a conservative case and an upside case before you commit. If the maths only works in the upside case, treat it as a time-boxed test with a kill date rather than a line in next year's plan.
What to do with the result
Rank retainers by effective hourly yield and renegotiate the bottom two at renewal rather than absorbing them.
Related guides
Long-form playbooks on the same topic, written by the RevenueLab editorial team.
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Read the guideFAQ
What does the retainer profitability calculator work out?
It applies Gross = people × price each × (1 − discount%); Effective cost = gross ÷ utilisation%, showing the true price of what actually gets used to the values you enter for retainer clients, monthly retainer fee each ($), share of delivered hours actually covered by the fee, average discount on rate card. Retainers rot slowly — the fee stays flat while the scope quietly widens, and nobody notices until the delivery team is permanently over capacity.
How accurate is this retainer profitability calculator?
A yield model from your own time data. It assumes you track delivered hours honestly; without that the answer is guesswork. Replace the defaults with your own invoice, usage export, payroll data, statement, or vendor quote before making a commitment — the maths is exact, so the answer is only as good as the inputs you feed it.
Which input should I stress-test first?
hours delivered versus hours priced, the core leak. Re-run with a pessimistic value for it; if the decision flips, that assumption is the thing you need real data on before signing anything. After that, check discounting against rate card at signature and client mix, since one heavy account can absorb a whole team.
Which scenario should I start from?
Start with the preset closest to your situation — small group, current setup, larger group — then edit the sliders. Presets are realistic starting points, not benchmarks to match, and every change updates the result instantly.
What should I do after running the numbers?
Rank retainers by effective hourly yield and renegotiate the bottom two at renewal rather than absorbing them. A useful planning benchmark to compare against: Healthy agency retainers deliver within 75–85% of contracted hours; below 65% the account is usually losing money.
Can I share or save this calculation?
Yes. Your inputs are written into the page URL, so copying the link shares the exact scenario you are looking at — the person who opens it sees the same numbers. You can also export the inputs and results to CSV or PDF from the result card and keep it with the rest of your workings.
How this calculator is built
Independently maintained
Written by Sam Doshi and the RevenueLab editorial team. We don't sell the data feeds this tool is built on.
Sourced from primary data
Benchmarks come from public AdSense / Stripe / IRS disclosures and reader-submitted data — never third-party "$X per view" claims. Full methodology.
Last editorial review
Reviewed on a rolling quarterly cycle. Dated reviews are published on the methodology record for each calculator.
Editorial standards
See our editorial policy and disclaimer. Results are estimates, not advice.