Free tool

Persistency Calculator

Persistency with the denominator in the open — so the number means the same thing every time you compute it.

Most persistency arguments are secretly denominator arguments. This calculator forces the denominator into the open: pick a cohort, a time period, and a unit, and use the same formula every period. Nothing you enter leaves your browser.

Counting unit

policiesclients

Active policies at the start of the period

Policies added during the period

Still active at the end of the period

This tool supports the Service & Persistency operating system. For the full picture across all six systems, run the 360 Diagnostic.

Educational only — results reflect exactly the numbers you enter and are not benchmarks, guarantees, or professional advice.