How to Calculate PTO Accrual Per Pay Period
Quick answer
PTO per pay period is often annual PTO hours divided by the number of accrual periods.
Biweekly26 periods
Semi-monthly24 periods
Monthly12 periods
If PTO is granted as an annual number of hours, a common accrual calculation divides the annual allowance by the number of accrual periods in the year.
Project your own PTO balance
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PTO accrual per pay period formula
PTO earned per period = annual PTO hours ÷ accrual periods per year
Common pay frequencies
| Schedule | Typical periods/year | 120 annual PTO hours |
|---|---|---|
| Weekly | 52 | 2.31 h/period |
| Biweekly | 26 | 4.62 h/period |
| Semi-monthly | 24 | 5.00 h/period |
| Monthly | 12 | 10.00 h/period |
Example: 120 hours per year on a biweekly schedule
120 ÷ 26 = 4.6154 hours per pay period
After 13 completed periods, that model would accrue about 60 hours before subtracting PTO used or applying any balance cap.
Other accrual methods
Some policies state a fixed number of PTO hours per period, while others accrue PTO per hour worked. Our calculator supports all three methods so you can model the policy you actually have.
Caps, carryover, and PTO used
A complete balance projection can start with a carryover balance, add earned PTO, subtract PTO used, and then apply an optional cap.
PTO policies and legal requirements vary. This guide explains the arithmetic only; it does not determine entitlement, carryover, payout, or whether a specific policy applies to you.
Frequently asked questions
How do I calculate PTO earned per pay period?
Divide annual PTO hours by the number of accrual periods, unless your policy uses a different method.
How many biweekly periods are in a typical year?
26.
How many semi-monthly periods are in a year?
24.