Free tools

Calculators that show their working.

Every one of these runs on the same rule engine as our payroll — effective-dated parameters with the statute attached — so each answer arrives with the article behind it, the date that version took effect, and a link to the source. Free, no sign-up, and nothing you type is stored.

Being built

Listed without dates, because a date on this page is a promise.

  • Payroll proration calculator
  • Payroll health check