How to use this calculator
- Enter total grant units, total vesting months, elapsed completed months, cliff months.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Assumptions and limitations
Fractional units are shown; actual grant rounding, forfeiture, performance conditions and taxation are excluded.
Worked example
With total grant units = 4800, total vesting months = 48, elapsed completed months = 18, cliff months = 12, vesting fraction after cliff is approximately 0.375.
What the result means
Inspect earned and unvested grant units under a simple monthly vesting agreement.
Common questions
How should I interpret vesting fraction after cliff?
Inspect earned and unvested grant units under a simple monthly vesting agreement.
What should I check before using this result?
Fractional units are shown; actual grant rounding, forfeiture, performance conditions and taxation are excluded.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.