Description
Calculate proportional founder-equity vesting under a supplied monthly schedule.
Venture calculations depend on funding scope, fee bases, repayment terms, equity conventions and reporting periods. A post-money investor fraction differs from a pre-money valuation ratio, while constant-burn runway is conditional on a positive burn assumption. Interview consent and reported hypothesis support remain source-record assertions rather than verified evidence.
Calculate proportional founder-equity vesting under a supplied monthly schedule.
When to use this tool
Use Founder Equity Vesting Month when you already have totalUnits, vestingMonths, completedMonths, cliffMonths and need to calculate proportional founder-equity vesting under a supplied monthly schedule.
How to use the tool and how it works
- Enter totalUnits, vestingMonths, completedMonths, cliffMonths. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read vestedUnits, unvestedUnits. Use the output convention below.
Require safe whole totalUnits/completedMonths>=0, vestingMonths>=1 and cliffMonths in [0,vestingMonths]. Before the cliff vested=0; at/after it vested=totalUnits*min(completedMonths,vestingMonths)/vestingMonths, with remainder unvested.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| totalUnits | Total Units | Required. Safe integer; minimum 0. |
| vestingMonths | Vesting Months | Required. Safe integer; minimum 1. |
| completedMonths | Completed Months | Required. Safe integer; minimum 0. |
| cliffMonths | Whole cliff month from 0 through vestingMonths. Crossing it releases accrued proportional vesting. | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| vestedUnits | Proportional numeric units; may be fractional, with no whole-unit rounding. | Required. Finite number. |
| unvestedUnits | Unvested Units | Required. Finite number. |
{
"input": {
"totalUnits": 4800,
"vestingMonths": 48,
"completedMonths": 18,
"cliffMonths": 12
},
"output": {
"vestedUnits": 1800,
"unvestedUnits": 3000
}
}Limitations and assumptions
- The cliff releases accrued proportional units; no rounding to whole units is applied. No vesting agreement, tax treatment, actual ownership or legal entitlement is established.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Reconcile the actual cash-flow forecast, financing agreement, cap table and experiment records for a venture decision. Use the full vesting and funding terms and inspect evidence quality; one balance, status label or supplied fraction does not establish feasibility, ownership or customer demand.
References
Similar or alternative tools
- Accelerator Dilution Postmoney Share
Calculate founder-share dilution from a supplied post-money investor share.
- Founder Loan Repayment Priority Tag
Record a supplied founder-loan priority assertion and source.