Answer first
What this calculator tells you
Calculate paid time off earned per pay period and the balance available so far. Know how much leave you have banked before you ask for a day off. Formula: Accrual per pay period = annual PTO hours ÷ pay periods per year; balance = accrual × periods worked − hours used. At the worked-example inputs, the available PTO (hours) is 30.2. Holding every other input steady, moving annual PTO (hours) from 96 to 144 moves the result from 20.9 to 39.4.
Transparent method
The formula
Know how much leave you have banked before you ask for a day off.
Worked example
Example inputs
How to interpret the result
Paid time off usually builds a little each pay period. With 120 hours a year across 26 pay periods you earn 4.62 hours a period. After 10 periods you have earned 46.2 hours, and if you have used 16, you have 30.2 hours, which is about 3.8 eight-hour days.
At the worked-example inputs the available PTO (hours) is 30.2. It rises with pay periods worked so far and annual PTO (hours) and falls as pay periods per year and PTO hours already used increase.
This is a simplified educational estimate, not a tax return.
Before you rely on it
What to check
Match the pay period count to your payroll. Biweekly pay has 26 periods a year and semimonthly has 24, and the accrual changes by a few tenths of an hour between them.
The common error
Where people go wrong with PTO accrual calculator
Ignoring the cap. Many employers stop accrual at a maximum balance or let it expire at year end, so a large balance can be worth less than the number shows.
Sensitivity evidence
How annual PTO (hours) changes the available PTO (hours)
Holding every other input at the worked-example value, moving annual PTO (hours) from 96 to 144 moves the available PTO (hours) from 20.9 to 39.4: a spread of 18.5, or 61% of the worked-example result.
| Annual PTO (hours) | Available PTO (hours) | PTO earned per pay period (hours) | Available PTO (8-hour days) |
|---|---|---|---|
| 96 | 20.9 | 3.7 | 2.6 |
| 108 | 25.5 | 4.2 | 3.2 |
| 120worked example | 30.2 | 4.6 | 3.8 |
| 132 | 34.8 | 5.1 | 4.3 |
| 144 | 39.4 | 5.5 | 4.9 |
Every input, tested
Which input moves the available PTO (hours) most
Of the 4 inputs, pay periods per year moves the available PTO (hours) most (10.8 across the range tested) and PTO hours already used moves it least (4).
| Input | Tested from | To | Available PTO (hours) at each end | Swing |
|---|---|---|---|---|
| Pay periods per year | 23 | 29 | 36.2 to 25.4 | 10.8 (36%) |
| Pay periods worked so far | 9 | 11 | 25.5 to 34.8 | 9.2 (31%) |
| Annual PTO (hours) | 108 | 132 | 25.5 to 34.8 | 9.2 (31%) |
| PTO hours already used | 14 | 18 | 32.2 to 28.2 | 4 (13%) |
Two variables at once
Available PTO (hours) by annual PTO (hours) and pay periods worked so far
Across the grid the available PTO (hours) runs from 13.5 to 50.5. Moving annual PTO (hours) from 96 to 144 shifts it by 18.5 at the middle column, and moving pay periods worked so far from 8 to 12 shifts it by 18.5 at the middle row, so neither is the bigger lever here.
| Annual PTO (hours) \ Pay periods worked so far | 8 | 10 | 12 |
|---|---|---|---|
| 96 | 13.5 | 20.9 | 28.3 |
| 108 | 17.2 | 25.5 | 33.8 |
| 120 | 20.9 | 30.2 | 39.4 |
| 132 | 24.6 | 34.8 | 44.9 |
| 144 | 28.3 | 39.4 | 50.5 |
The highlighted cell is the worked example: 30.2.
Step by step
The worked example, input by input
| Input | Value used | What it means |
|---|---|---|
| Annual PTO (hours) | 120 | Your yearly allowance. 120 hours is 15 eight-hour days. |
| Pay periods per year | 26 | 26 for biweekly, 24 for semimonthly, 12 for monthly and 52 for weekly pay. |
| Pay periods worked so far | 10 | Enter the pay periods worked so far used in this calculation. |
| PTO hours already used | 16 | Hours of leave you have taken so far this year. |
| Available PTO (hours) | 30.2 | |
| PTO earned per pay period (hours) | 4.6 | |
| Available PTO (8-hour days) | 3.8 | |
Inputs, definitions and assumptions
Annual PTO (hours)
Your yearly allowance. 120 hours is 15 eight-hour days. The prefilled worked-example value is 120.
Pay periods per year
26 for biweekly, 24 for semimonthly, 12 for monthly and 52 for weekly pay. The prefilled worked-example value is 26.
Pay periods worked so far
Enter the pay periods worked so far used in this calculation. The prefilled worked-example value is 10.
PTO hours already used
Hours of leave you have taken so far this year. The prefilled worked-example value is 16.
How to use this calculator
- 1Verify the inputs. Gather annual PTO (hours), pay periods per year, pay periods worked so far and PTO hours already used from your own documents; the prefilled values are examples.
- 2Save a baseline. The worked example puts the available PTO (hours) at 30.2. Store your own version of it as Scenario A.
- 3Test one change. Start with pay periods per year, the input with the biggest effect here: moving pay periods per year from 23 to 29 takes the available PTO (hours) from 36.2 to 25.4, a swing of 36% of the worked-example figure.
- 4Check the extremes. At half the example pay periods per year (13) the available PTO (hours) is 76.3; at double (52) it is 7.1.
People also ask
Frequently asked questions
How do you calculate PTO accrual?
Accrual per pay period = annual PTO hours ÷ pay periods per year; balance = accrual × periods worked − hours used. At the worked-example inputs the available PTO (hours) is 30.2.
What does the PTO accrual result mean?
Know how much leave you have banked before you ask for a day off. At the worked-example inputs the available PTO (hours) is 30.2. It rises with pay periods worked so far and annual PTO (hours) and falls as pay periods per year and PTO hours already used increase.
How much does annual PTO (hours) change the available PTO (hours)?
Holding every other input at the worked-example value, moving annual PTO (hours) from 96 to 144 moves the available PTO (hours) from 20.9 to 39.4, a spread of 18.5.
What are the limits of this PTO accrual calculator?
This is a simplified educational estimate, not a tax return. The tables on this page test annual PTO (hours) only from 96 to 144; a value outside that range is not tabulated here.
Which input moves the available PTO (hours) most in the PTO accrual calculator?
Ranked by how far each moves the available PTO (hours) across the range tested: pay periods per year (10.8, 36%), pay periods worked so far (9.2, 31%), annual PTO (hours) (9.2, 31%) and PTO hours already used (4, 13%).
If I double pay periods per year in the PTO accrual calculator, does the available PTO (hours) double?
Doubling it from 26 to 52 takes the available PTO (hours) from 30.2 to 7.1, which is 0.23 times the worked-example figure. So it falls instead of rising. Halving it to 13 gives 76.3.
How much does pay periods per year matter in the PTO accrual calculator?
The worked example uses 26. Holding every other input at its worked-example value, moving pay periods per year from 23 to 29 takes the available PTO (hours) from 36.2 to 25.4, a swing of 36% of the worked-example figure.
How much does pay periods worked so far matter in the PTO accrual calculator?
The worked example uses 10. Holding every other input at its worked-example value, moving pay periods worked so far from 9 to 11 takes the available PTO (hours) from 25.5 to 34.8, a swing of 31% of the worked-example figure.
How much does PTO hours already used matter in the PTO accrual calculator?
The worked example uses 16. With the other inputs left at the worked example, moving PTO hours already used from 14 to 18 takes the available PTO (hours) from 32.2 to 28.2, a swing of 13% of the worked-example figure.
Which inputs change the PTO earned per pay period (hours) in the PTO accrual calculator?
At the worked-example inputs it is 4.6. Annual PTO (hours) takes it from 4.2 to 5.1 and pay periods per year takes it from 5.2 to 4.1.
Which inputs change the available PTO (8-hour days) in the PTO accrual calculator?
At the worked-example inputs it is 3.8. Annual PTO (hours) takes it from 3.2 to 4.3, pay periods per year takes it from 4.5 to 3.2, pay periods worked so far takes it from 3.2 to 4.3 and PTO hours already used takes it from 4 to 3.5.
How is self-employment tax different from income tax?
It is an additional obligation covering both halves of payroll-type contributions, computed on net earnings , not gross revenue, with a portion generally deductible in computing income tax. Estimates built only from expected income tax fall materially short.
Sources and evidence
Free Calculators Online is independent and is not affiliated with or endorsed by the source organizations. Educational estimates only.