PTO Accrual Calculator

Turn your annual vacation allowance into an accrual rate per hour worked and per paycheck, then project your balance.

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How PTO Accrual Works

Most US employers grant paid time off in one of two ways. With a lump-sum grant, your whole annual allowance appears at the start of the year. With accrual, you earn PTO gradually — a set number of hours each pay period, or a fraction of an hour for every hour you work.

The standard accrual formula is: annual PTO hours ÷ annual work hours. Someone with 15 days (120 hours) of PTO working 2,080 hours a year accrues 0.0577 hours of PTO for every hour worked — about 4.62 hours per bi-weekly paycheck.

Common PTO Accrual Rates (Full Time)

PTO DaysHours/YearPer Hour WorkedBi-Weekly
10 days80 hrs0.03853.08 hrs
15 days120 hrs0.05774.62 hrs
20 days160 hrs0.07696.15 hrs
25 days200 hrs0.09627.69 hrs
30 days240 hrs0.11549.23 hrs

Frequently Asked Questions

How do I calculate my PTO accrual rate?

Divide your total annual PTO hours by the hours you work in a year. For 15 days (120 hours) at 40 hours a week, that is 120 ÷ 2,080 = 0.0577 PTO hours per hour worked.

How much PTO do I earn per paycheck?

Divide annual PTO hours by the number of pay periods: 26 for bi-weekly, 24 for semi-monthly, 12 for monthly, 52 for weekly.

Does unused PTO have to be paid out when I leave?

It depends on the state and your employer policy. Some states treat accrued vacation as earned wages that must be paid out; others leave it to company policy. Check your state labor department and your handbook.

What is a PTO accrual cap?

Many employers cap how much PTO you can bank. Once you hit the cap you stop accruing until you use some time — often called a "use it or lose it" or accrual ceiling policy, which some states restrict.

⚠️ For estimation only — not legal, HR, or payroll advice. PTO accrual, carryover, caps, and payout on termination are governed by your employer's written policy and by state law, which varies considerably. Verify with your HR department.