PTO Accrual Calculator
Enter your PTO accrual rate and pay frequency to see how much paid time off you earn per month, per year, and your projected balance.
Hours you earn each pay period
How often you get paid
Hours currently in your PTO bank
Hours already used this year
Max hours you can accumulate (optional)
For converting hours to days
Results are estimates based on common PTO policies. Actual employer policies and state laws may differ. Full disclaimer.
How PTO accrual works
PTO accrual is the process of earning paid time off incrementally over time. Rather than receiving all your days at once, most US employers distribute PTO across pay periods so your balance grows with each paycheck.
The rate at which you earn PTO depends on your employer's policy, your tenure, and your pay schedule. This calculator projects your annual total and year-end balance based on those inputs.
Weekly accrual
52 pay periods per year. If you earn 2.31 hours per week, your annual total is 2.31 × 52 = 120 hours (15 days). Weekly accrual gives the most granular tracking and is common in hourly positions.
Biweekly accrual
26 pay periods per year. The most common schedule in the US. If you earn 4.62 hours per paycheck, your annual total is 4.62 × 26 = 120.12 hours. You earn PTO every other Friday (or whenever your pay cycle falls).
Semi-monthly accrual
24 pay periods per year (paid on the 1st and 15th, or similar). If you earn 5.0 hours per period, your annual total is 5.0 × 24 = 120 hours. Slightly fewer periods than biweekly, so the per-period amount is higher.
Monthly accrual
12 pay periods per year. If you earn 10 hours per month, your annual total is 10 × 12 = 120 hours. Monthly accrual is simpler to track but means longer waits between balance increases.
PTO accrual examples
Real scenarios showing how PTO builds over time:
| Accrual Rate | Frequency | Annual Hours | Annual Days |
|---|---|---|---|
| 1.54 hrs/period | Weekly | 80 hours | 10 days |
| 3.08 hrs/period | Biweekly | 80 hours | 10 days |
| 4.62 hrs/period | Biweekly | 120 hours | 15 days |
| 6.15 hrs/period | Biweekly | 160 hours | 20 days |
| 8.0 hrs/period | Monthly | 96 hours | 12 days |
| 10.0 hrs/period | Monthly | 120 hours | 15 days |
If you don't know your per-period rate, divide your annual PTO hours by the number of pay periods. Not sure how many annual hours you get? Check your employee handbook or use our general PTO calculator which works backward from annual allowance.
Average PTO accrual rates in the US
Bureau of Labor Statistics data for private-sector workers by years of service:
| Tenure | Annual PTO | Biweekly Rate | Monthly Rate |
|---|---|---|---|
| 1 year | 80 hrs (10 days) | 3.08 hrs | 6.67 hrs |
| 3 years | 96 hrs (12 days) | 3.69 hrs | 8.00 hrs |
| 5 years | 120 hrs (15 days) | 4.62 hrs | 10.00 hrs |
| 10 years | 136 hrs (17 days) | 5.23 hrs | 11.33 hrs |
| 15 years | 160 hrs (20 days) | 6.15 hrs | 13.33 hrs |
| 20+ years | 200 hrs (25 days) | 7.69 hrs | 16.67 hrs |
These are averages. Tech companies and financial firms often start higher (15-20 days). Retail and food service often start lower (5-10 days). Your exact rate is in your offer letter or employee handbook.
PTO accrual formula
The math behind PTO accrual:
Annual PTO = Accrual Per Period × Number of Pay Periods
Current Balance = Starting Balance + PTO Earned - PTO Used
Accrual Per Period = Annual PTO Hours ÷ Pay Periods Per Year
Example: You earn 4.62 hours biweekly. You started the year with 16 hours carried over. You've used 32 hours so far. It's mid-year (13 pay periods elapsed).
- Earned so far: 4.62 × 13 = 60.06 hours
- Current balance: 16 + 60.06 - 32 = 44.06 hours available
- Full-year projection: 16 + (4.62 × 26) - 32 = 104.12 hours at year-end
- Days equivalent: 104.12 ÷ 8 = 13 days
If your employer sets a cap of 180 hours, and your projected balance exceeds that, accrual will pause once you hit 180. Use the cap field in the calculator above to see when this happens.
When to use this calculator
- Planning a vacation: Check if you'll have enough PTO by your target travel date
- Approaching your cap: See how many more hours you can earn before accrual stops
- Year-end planning: Project your December 31 balance to decide if you need to use days before they expire
- New job comparison: Convert different accrual rates to annual totals for comparing offers
- Verifying your pay stub: Cross-check the PTO balance your employer shows against the formula
For converting your PTO balance from hours to days, use the PTO hours to days calculator. To find what your unused PTO is worth in dollars, use the PTO payout calculator.
Approaching your year-end cap? Use our PTO Rollover Calculator to see exactly how many hours will carry over and how many you'll lose. For sick leave accrual tracked separately, try the Sick Leave Calculator.
For a deeper explanation of how all three accrual methods work, read our guide: Vacation Accrual Explained. If you're an hourly worker with per-hour accrual, see PTO for Hourly Employees.
Related Guides
- Vacation Accrual Explained · Caps, rollover, and mid-year balance tracking.
- How PTO Is Calculated · All three accrual methods with formulas.
- PTO for Hourly Employees · Per-hour accrual rates and state laws.
Find out what your PTO is worth
Convert your accrued hours to a dollar amount with tax estimates.
PTO Payout Calculator →PTO Accrual Calculator — FAQ
- What is a PTO accrual calculator?
- A PTO accrual calculator determines how much paid time off you earn over a period of time based on your accrual rate and pay frequency. You enter how many hours you earn per pay period, and it shows your monthly, annual, and projected year-end totals.
- How is PTO accrued?
- PTO accrues based on your employer's policy. The most common method for salaried workers: your annual PTO is divided across pay periods (e.g., 120 hours/year ÷ 26 biweekly paychecks = 4.62 hours per paycheck). For hourly workers, accrual is often 1 PTO hour per 30 hours worked.
- How do I calculate accrued PTO?
- Multiply your per-period accrual rate by the number of pay periods elapsed. Then subtract any PTO used. Formula: Accrued PTO = (Rate × Periods) + Starting Balance - Hours Used. Example: 4.62 hrs × 13 periods + 8 hrs carried over - 24 hrs used = 44.06 hours available.
- What is a normal PTO accrual rate?
- For US private-sector workers: 3.08 hours/biweekly paycheck in year 1 (80 hrs/year = 10 days), increasing to 4.62 hours (120 hrs = 15 days) after 3-5 years, and 6.15 hours (160 hrs = 20 days) after 10+ years. Rates vary significantly by industry and employer.
- How many PTO hours do employees earn each pay period?
- It depends on annual allowance and pay frequency. Common examples: 80 hrs/year on biweekly pay = 3.08 hrs/period. 120 hrs/year on biweekly = 4.62 hrs/period. 160 hrs/year on biweekly = 6.15 hrs/period. Monthly pay: divide annual hours by 12.
- What happens when I reach my PTO cap?
- When your balance reaches the cap (e.g., 240 hours), you stop accruing additional PTO until you use some time and your balance drops below the limit. Any accrual that would push you over the cap is typically forfeited. This is why tracking your balance matters.
- Can I calculate vacation accrual with this tool?
- Yes. Vacation accrual and PTO accrual use the same math. Enter your vacation hours per period instead of PTO hours. The calculator works for any type of paid leave that accrues over time (vacation, PTO, sick leave, personal days).
Related Calculators
- PTO Calculator · Calculate your total paid time off accrual based on your employer's policy, hours worked, and accrual rate.
- PTO Payout Calculator · Find out how much your unused PTO is worth when you leave a job, get laid off, or cash out accrued time.
- PTO Hours to Days Calculator · Convert PTO hours to work days, or days to hours. Adjust for 8-hour, 10-hour, or any shift length.