Website Maintenance Retainer Calculator

A maintenance retainer sells more than task hours. It can also reserve capacity for the client and cover recurring tools required to provide the service.

Start with expected support time

Estimate the monthly hours you are prepared to include and multiply them by an internal sustainable rate. Add project-specific recurring software costs and a premium when the agreement requires reserved availability.

Define the service boundary

State response expectations, rollover rules, included work and excluded project work. A clear boundary helps prevent a maintenance agreement from turning into unlimited development.