Prorated PTO Calculator

How to prorate PTO¶

Prorated PTO = full-time annual allowance × eligible share of the plan year × FTE. Use the date-based share for a new hire or departure, and the weekly-hours ratio for a reduced schedule. Calculate in hours first, then convert to days and apply the chosen rounding rule.

1. Start with the full-time benefit. Enter the annual allowance before reducing it for this employee.
2. Set the plan year and event. New hire counts forward from the start date; Leaving counts through the last day. Part-time covers a full plan year.
3. Enter weekly hours. FTE equals employee hours divided by full-time hours. Full-time employees use the same hours in both fields.
4. Read the matching method. Compare the results, then use the method named in your written policy. Keep that rule consistent across employees.

For ongoing credits and balance projections, use the Free PTO accrual calculator.

Which method to use¶

Choose calendar days for a new proration rule: every date counts, and the formula handles partial months without a cutoff. Keep an existing month or whole-period rule when reconciling an established plan. The comparison shows the cost of each choice; it is not an instruction to award whichever result is largest.

Take a May 1, 2026 hire, four complete months into a January-start plan year. Full-time allowance: 15 eight-hour days, or 120 hours. Use biweekly frequency and no rounding.

Monthly and semimonthly pay-period comparisons count complete calendar periods. The Months method instead applies the cutoff, so it can credit a partial month. Keep those rules separate.

Worked examples¶

Record the allowance, method, and rounding. These examples use a January-start year, eight-hour full-time days, and no rounding. Results display two decimals; calculations retain full precision.

Mid-year new hire¶

A full-time employee starts July 1, 2026 with a 15-day annual benefit. Select New hire and semimonthly frequency.

1. Annual hours: 15 × 8 = 120.
2. Calendar days: July 1 through December 31 includes 184 of 365 days.
3. Allowance: 120 × 184 ÷ 365 = 60.49 hours, or 7.56 days.

Months gives 15 × 6 ÷ 12 = 7.50 days, or 60 hours. Semimonthly counts 12 of 24 whole periods, giving the same result. The difference reflects the method.

Part-time employee at 0.6 FTE¶

Select Part-time for someone working 24 hours against a 40-hour full-time week, with the same full-time annual allowance.

1. FTE: 24 ÷ 40 = 0.60, or 60%.
2. Full-time allowance: 15 × 8 = 120 hours.
3. Reduced allowance: 120 × 0.60 = 72 hours, or 9 standard days.

All three cards agree because Part-time covers a full plan year. Enter the full-time allowance once and let FTE do the reduction.

Employee leaving after taking PTO¶

An employee eligible since January 1 leaves on June 30, 2026, after taking 9 days. Select Leaving, semimonthly frequency, and the same full-time allowance.

1. Calendar-day earnings: 120 × 181 ÷ 365 = 59.51 hours, or 7.44 days.
2. Usage: 9 × 8 = 72 hours.
3. Net balance: (120 × 181 ÷ 365) − 72 = −12.49 hours, or −1.56 days.

The card displays “Overdrawn by 1.56 days (12.49 hrs)”. Months credits six months; semimonthly credits 12 periods. Each earns 60 hours and shows 12 hours, or 1.50 days, overdrawn. Record the difference before considering any payroll recovery.

Switching from full-time to part-time mid-year¶

An employee moves from full-time to 0.6 FTE on July 1, 2026. Use Months for both segments and add earned amounts before subtracting usage.

1. Run Leaving through June 30 at full time, with no usage entered: 120 × 6 ÷ 12 = 60 hours.
2. Run New hire from July 1 at 24 of 40 weekly hours: 120 × 0.60 × 6 ÷ 12 = 36 hours.
3. Combine: 60 + 36 = 96 hours, or 12 standard days, for the year.

New hire represents the new schedule's start. Preserve the earlier segment's earnings.

Prorating for part-time employees¶

Use hours as the source of truth for reduced schedules. The calculator's days are full-time-day equivalents: 72 hours is 9 eight-hour days, but covers 12 six-hour shifts. That distinction matters when someone asks how many actual days they can book.

For a part-time mid-year hire, choose New hire and enter the reduced weekly hours. The calculation applies both date share and FTE. Four ten-hour days still totals 40 hours, so a compressed full-time week does not need an FTE reduction.

Prorating when someone leaves¶

Calculate earned time through the last day, then subtract PTO already taken. A front-loaded allowance and earned-to-date time can differ; reconciling them explains an overdrawn result. Carry prior-year balances into your final reconciliation separately.

An overdrawn balance does not authorize a deduction. California's Labor Commissioner, for example, prohibits deducting advanced vacation from final wages. Use the Free PTO payout calculator to continue with unused-time value and state-specific sources.

Sample proration policy clause¶

Choose one clause; each uses nearest-half-day rounding.

Calendar days

Employees hired after the start of the plan year receive the full-time annual PTO allowance multiplied by the calendar days from their hire date through plan-year end, divided by total calendar days in that plan year. Both endpoints count; we then multiply by FTE and round the final allowance to the nearest half day.

Months

Employees hired after the start of the plan year receive the full-time annual PTO allowance multiplied by credited months remaining, divided by 12. The hire month counts for starts on or before the 15th; we then multiply by FTE and round the final allowance to the nearest half day.

Whole pay periods

Employees hired after the start of the plan year receive the full-time annual PTO allowance multiplied by whole eligible pay periods remaining, divided by annual pay periods. For weekly or biweekly estimates, we count whole seven- or fourteen-day blocks through plan-year end; we then multiply by FTE and round to the nearest half day.

Use the Free PTO policy generator to put the chosen rule beside eligibility, earning dates, and carryover terms.

Let Cabana keep the balance¶

Proration is a one-off calculation; the balance after it needs a home. Cabana can start each employee's accrual from their own hire date, so a mid-year hire's balance builds from day one without a spreadsheet. Its PTO tracking software for small teams also handles scheduled accrual, carryover rules, and balance history. Employees request time off and check balances in Slack or Microsoft Teams; managers approve from the message.

Last checked August 2026. This is general guidance rather than legal advice, and employment rules do change. Worth a quick check with your state labor agency or an employment attorney before relying on anything state-specific.