Retainer overage calculator
See what your retainer really pays per hour once the extra hours are counted, and what you’re giving away each year.
Enter the monthly fee, the hours it is meant to cover, and the hours you actually work in a typical month. If you work past the cap without billing it, your effective rate drops below what you priced.
The fix is usually one paragraph in the agreement: a cap, an overage rate, and a notice at 80%. Here is a copy-paste template.