PTO Accrual Calculator

About the PTO Accrual Calculator

Many employers do not give all of a year's paid time off on the first day. Instead, employees accrue PTO gradually, earning a few hours each pay period or for each hour worked. Knowing your accrual rate tells you how quickly you build up leave, when you will have enough for a planned trip, and whether you are close to a cap that stops further accrual.

This PTO accrual calculator works out how many hours you earn per pay period and per hour worked from your yearly PTO allowance and pay frequency. It projects your balance after a number of future pay periods, applying any accrual cap, and subtracts planned leave to show what will be left.

How to Use the PTO Accrual Calculator

Enter the PTO earned per year in hours and choose your pay frequency.

Enter your current balance, the number of pay periods ahead, and any planned PTO use.

Enter the accrual cap, or 0 if there is none, and your hours per working day.

The Formulas

  per pay period = annual PTO hours ÷ pay periods per year
  per hour       = annual PTO hours ÷ 2,080
  balance        = current balance + accruals (stopping at the cap) − planned use

Pay periods per year: weekly 52, every two weeks 26, twice a month 24, monthly 12.

Step-by-Step Example

120 hours a year, paid every two weeks, 16 hours now, 10 pay periods ahead, 24 hours planned, 160-hour cap.

  per period   120 ÷ 26 = 4.62 hours
  per hour     120 ÷ 2,080 = 0.0577 hours
  in 10 periods  16 + 46.15 = 62.15 hours (under the cap)
  after leave  62.15 − 24 = 38.15 hours = 4.77 days

Days and Hours

Employers state PTO in days or hours. Convert days to hours by multiplying by the length of your working day: 15 days at 8 hours is 120 hours. Part-time employees often accrue in proportion to hours worked, which is where the per-hour rate is useful: at 0.0577 hours per hour, a 20-hour week earns about 1.15 hours of PTO.

Accrual Caps

To limit the liability of large unused balances, many employers cap accrual, often at one and a half or two times the annual amount. Once you reach the cap, you stop earning PTO until you use some. The calculator shows if any hours would be lost to the cap during the projection, a signal to schedule leave soon. Caps differ from carry-over limits, which reset balances at year end; check which your employer uses.

Planning Leave

Use the projection to see when you will have enough hours for a trip, and the time off calculator to work out how many hours a particular trip will use. Balancing leave across the year helps avoid hitting a cap and reduces burnout. If you plan to change jobs, check whether unused PTO will be paid out.

Front-Loaded PTO

Some employers grant the full year's PTO at the start of the year or after a probation period instead of accruing it. Then the balance is available immediately but may be adjusted if you leave early. The per-period figures here still show the equivalent rate.

Rules and Payouts

PTO is mostly governed by employer policy, but some states and countries regulate it, for example requiring payout of accrued vacation at termination or prohibiting use-it-or-lose-it policies. Paid sick leave laws may require separate accrual at set rates. Check your handbook and local law.

Accrual and New Employees

Some employers start accrual on the first day; others wait until a probation period ends, then credit the hours earned so far or start fresh. Accrual rates often increase with years of service, for example from 15 days a year to 20 after five years. When your rate changes, update the annual hours to keep projections accurate.

Overtime and Unpaid Leave

Hours-worked accrual usually counts regular hours only, and many policies exclude overtime or unpaid leave. A long unpaid absence can therefore reduce the PTO you earn in a year. Check how your employer counts hours when projecting your balance.

Tracking Your Balance

Payslips and HR systems normally show your current balance. If the figures do not match your own calculation, check the accrual rate, the pay frequency and whether any hours were capped or used. Errors are easier to fix soon after they happen than at the end of the year.

Sick Leave

Many employers track sick leave separately from vacation, often with its own accrual rate set by law, such as one hour for every 30 hours worked in some states. Run the calculator separately for each type of leave.

Changing Jobs

When you move to a new employer, your accrual usually starts again from zero, often at the lowest tier. Factor this into the timing of a move, and ask during negotiations whether a higher accrual rate or a starting balance is available.

Understanding Your Result

The headline gives the hours earned per pay period.

The per hour worked line gives the hourly rate and days per year.

The projected balance line shows the balance before and after planned use.

The cap line shows whether any accrual would be lost.

When Should You Use This Calculator?

Use it to plan a holiday around your PTO balance.

Use it to check that payroll is crediting PTO correctly.

Use it as an employer to explain accrual rates to staff.

Common Mistakes

Mixing days and hours. Convert using your working day.

Ignoring the cap. Hours above it are lost.

Assuming payout on leaving. It depends on law and policy.

Using calendar pay periods incorrectly. Biweekly is 26 periods, not 24.