Calculate equity vesting with cliff periods, graded vesting, and acceleration triggers with visual timeline and milestone markers.
Turn an equity grant into a timeline of vested and unvested amounts. Enter the grant size, vesting commencement, total term, cliff, installment cadence, and any acceleration scenario. The calculator places vesting events on a visual timeline and tracks the cumulative vested amount at each milestone. A common mistake is treating the cliff as one ordinary installment. In a typical cliff schedule, the cliff date releases the amount accumulated during the cliff period, after which smaller graded installments continue.
A concrete input and expected output from the current implementation.
Input
Grant: 1,200 units; commencement: month 0; term: 48 months; cliff: 12 months; vest 25% at the cliff; vest the remaining 75% monthly over 36 months; acceleration: none.
Expected output
Months 0 through 11: 0 vested. Month 12: 300 vested and 900 unvested. Months 13 through 48: 25 additional units vest each month. Cumulative vested totals are 600 at month 24, 900 at month 36, and 1,200 at month 48.
The cliff releases 25% of 1,200, or 300 units. The remaining 900 units divided across 36 monthly installments produces 25 units per installment.
The calculator begins at the vesting commencement point and shows no vested amount before the specified cliff. At the cliff milestone, it adds the portion assigned to the elapsed cliff period. It then adds each graded installment at the chosen cadence until the scheduled grant total has vested.
An acceleration trigger moves the selected amount of otherwise unvested equity onto the trigger milestone and adjusts the remaining timeline accordingly. This models the arithmetic of an acceleration provision. It does not determine whether an acquisition, termination, or other event legally satisfies the trigger language in a particular award agreement.
No. That result follows only when a four-year grant accrues evenly and the agreement releases the first year's portion at the cliff. A plan can specify a different cliff percentage or a different pattern after the cliff. Enter the schedule stated in the governing grant documents rather than assuming the common 25% structure.
It can calculate a timeline from the acceleration trigger and amount you enter, but it cannot decide whether an acquisition activates that provision. Some awards require additional conditions, and definitions can differ between agreements. Use the result as a scenario, then compare it with the plan, award agreement, and transaction terms.
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