How this is calculated
- Accrual per period = annual allowance ÷ number of periods per year.
- Period length = 365 ÷ periods per year. Only complete periods count as accrued.
- Blank start date means the person was already employed at the start of the
year, so the full annual allowance applies.
- Prorated entitlement — if the start date falls during the current year, the
annual allowance is prorated by the fraction of the year remaining from that date.
- Accrued to date never exceeds the prorated entitlement for the year.
- Remaining = accrued to date − days already taken (never shown below zero).
This tool uses a simplified 365-day model and does not account for carry-over from previous
years, probation periods, or accrual caps. Treat the result as an estimate, not payroll advice.
