Prorated Pto Calculator
Prorated PTO is the slice of annual paid time off an employee actually earns when they work only part of the year. Three methods dominate: the working-days method (daily accrual rate times days remaining), the monthly method (annual divided by 12 times months worked), and the pay-period accrual converter. This calculator offers all three, so it matches whichever method your company’s policy uses.
How to use this calculator
The Working days tab is the most precise: enter the annual PTO in days, the start date, and the working days in the year (260 is standard for a five-day week). It counts the actual Monday-to-Friday days from the start date through December 31 and prorates from there. The Monthly tab uses the classic formula with a start-month dropdown. The Accrual converter turns a per-pay-period figure from an offer letter into annual hours and days.
The prorated PTO formulas
Working-days method: daily rate = annual PTO ÷ working days in year; prorated PTO = daily rate × working days remaining.
Monthly method: prorated PTO = (annual PTO ÷ 12) × months worked.
Accrual converter: annual hours = hours per pay period × pay periods per year; annual days = annual hours ÷ hours per workday.
Worked examples
Working days: 20 days of annual PTO, 260 working days in the year, 130 working days remaining. Daily rate: 20 ÷ 260 = 0.0769 days per day. Prorated: 0.0769 × 130 = 10.00 days. Monthly: 120 hours of annual PTO with a July 1 start (6 months). Monthly rate: 120 ÷ 12 = 10 hours; prorated: 10 × 6 = 60 hours (7.5 days). Accrual: 4 hours per bi-weekly period × 26 periods = 104 hours per year ÷ 8 = 13 days.
A note on precision and rounding
The monthly method treats all months as equal twelfths, which is simple but slightly imprecise for mid-month starts. The working-days method with exact dates is more accurate and is what payroll systems typically use. Either way, apply one method consistently to every employee, and check the company policy on rounding: some round up to the next whole day, others to the nearest half day, and the difference compounds across a workforce.
Frequently asked questions
What is prorated PTO?
The portion of annual paid time off an employee earns for the part of the year they actually work, used for mid-year hires and early departures.
How do you calculate prorated PTO?
Either divide annual PTO by 12 and multiply by months worked, or divide by working days in the year and multiply by working days remaining. Both are standard; this calculator offers both.
How do you prorate PTO for a mid-month start?
Use the working-days tab with the exact start date: it counts actual weekdays remaining instead of rounding to whole months, which is the precision the monthly-only tools admit they lack.
How is PTO prorated for part-time employees?
Scale the full-time entitlement first: annual PTO × (part-time hours ÷ full-time hours), then prorate by time worked. A half-time employee with a 24-day full-time entitlement earns 12 days per year, then 6 days for a July start.
Is unused prorated PTO paid out when someone leaves?
It depends on company policy and state law. Some states require payout of accrued unused PTO; others leave it to the employer. HR teams prorate the same way at exit as at hire.
Do probation periods affect PTO accrual?
Often yes. Many companies delay accrual until after a 30- or 90-day probation. If that applies, count working days or months from the accrual start date, not the hire date.
Do holidays count as PTO?
No. Company holidays are separate from the PTO bank unless the policy explicitly folds them in.
What is the average annual PTO in the US?
Roughly 10 to 15 days for new employees, rising with tenure. Use your company's actual figure, not an average, for the calculation.
What competitors miss
We read the seven top-ranking prorated PTO pages before writing this one. The monthly tools are simple but admit they cannot handle partial months. The working-days tools use the right formula but make you count the remaining days by hand. The one accrual converter is buried in a tools page with no proration at all. None of the seven offers all three methods, and none counts exact working days from a start date. This page does all three, keeps the original working-days math intact, and covers the questions HR actually fields: part-time scaling, rounding policies, probation periods, and payout at exit.