PTO Accrual Calculator
Updated August 2026 · Free · No sign-up
Work out your PTO accrual rate per pay period or per hour worked, and project how much paid time off you'll have banked by any point in the year — including caps, waiting periods, and what happens to unused hours.
Quick answer: PTO accrual rate = annual PTO hours ÷ number of accrual periods. With 120 hours (15 days) per year on a biweekly payroll, you accrue 120 ÷ 26 = 4.62 hours per paycheck. Per hour worked, it's 120 ÷ 2,080 = 0.0577 PTO hours per hour.
How PTO Accrual Works
Most US employers don't hand you the full year's vacation on January 1 — you earn (accrue) it gradually as you work. Each pay period adds a slice of your annual allowance to your bank. Accrual protects the employer (someone who quits in March hasn't consumed a full year of PTO) and, in states that treat vacation as earned wages, defines exactly what you're owed if you leave mid-year.
Four accrual designs dominate: per pay period (most common — equal slices each paycheck), per hours worked (standard for part-time and hourly staff, and required by many state sick-leave laws), monthly, and lump-sum front-loading (everything granted on Jan 1 or your anniversary — simpler, but often paired with stricter use-it-or-lose-it rules).
PTO Accrual Formulas
Per pay period: Accrual Rate = Annual PTO Hours ÷ Number of Pay Periods
Per hour worked: Accrual Rate = Annual PTO Hours ÷ 2,080 (full-time hours per year)
Projected balance: Balance = Accrual Rate × Periods Worked (+ carry-over − PTO used)
Worked Examples
Example 1 — biweekly salaried. Jake gets 120 hours (15 days) of PTO per year, paid biweekly:
- Accrual rate: 120 ÷ 26 = 4.62 hours per paycheck
- After 13 pay periods (half the year): 13 × 4.62 = 60 hours banked (7.5 days)
Example 2 — hourly part-timer. Maria works about 25 hours/week at a company granting 80 PTO hours to full-timers. Her hourly accrual is 80 ÷ 2,080 = 0.0385/hour, so a 25-hour week earns 0.96 hours — roughly a full PTO day every 8-9 weeks, automatically pro-rated by her schedule.
Example 3 — hitting the cap. Dev accrues 6.15 hours biweekly (160/year) with a 240-hour cap. Arriving at the cap in October, his accruals stop until he takes leave — every untaken vacation day past that point is compensation silently forfeited.
Common Accrual Rates Cheat Sheet
| Annual PTO | Biweekly (26) | Semi-monthly (24) | Monthly | Per hour worked |
|---|---|---|---|---|
| 80 hrs (10 days) | 3.08 | 3.33 | 6.67 | 0.0385 |
| 120 hrs (15 days) | 4.62 | 5.00 | 10.00 | 0.0577 |
| 160 hrs (20 days) | 6.15 | 6.67 | 13.33 | 0.0769 |
| 200 hrs (25 days) | 7.69 | 8.33 | 16.67 | 0.0962 |
Accrual Caps, Waiting Periods, and Negative Balances
- Caps: most policies stop accrual at 1.5–2x the annual rate. California prohibits use-it-or-lose-it forfeiture but explicitly allows reasonable caps — the legal difference is that a cap pauses earning, while forfeiture takes away hours already earned.
- Waiting periods: new hires often accrue from day one but can't use PTO for 60–90 days. A few policies delay accrual itself — worth checking before a job switch, since it affects your first year's real vacation.
- Negative balances: borrowing unaccrued PTO is at employer discretion. If you quit with a negative balance, whether the employer can deduct it from your final check depends on state law and prior written consent — another reason to know your exact accrued number.
- Anniversary bumps: tenure tiers (10 days → 15 at 3 years → 20 at 7 years) typically apply from your anniversary date, changing your per-period rate mid-year. Recalculate when you cross a tier.
Front-Loading vs Accrual: Which Is Better for You?
Front-loading gives you full flexibility in January and simpler math, but employers pair it with stricter year-end forfeiture, and in payout states your "earned" balance on exit may be pro-rated anyway. Accrual is fair and steady but constrains early-year vacations. When comparing job offers, don't just compare the day count — compare accrual design, cap, carry-over, and payout policy. Fifteen accrued days with payout protection can be worth more than eighteen front-loaded days that vanish on December 31.
PTO Accrual and Your Money
Accrued PTO is deferred compensation sitting on your employer's books. Three practical implications: check your current leave balance against your own log quarterly, because payroll system errors compound; before resigning, calculate what your bank is worth with the PTO payout calculator — in payout states that's real cash in your final paycheck; and if you're near your cap, schedule leave — at the cap, every additional week worked without vacation is compensation you're declining. Public-sector workers banking overtime as time off should use the comp time calculator, which follows different (FLSA 1.5x) rules.
Sick Leave Accrual: The Legal Minimums
Separate from vacation PTO, many jurisdictions mandate paid sick leave accrual — commonly 1 hour per 30 hours worked (California and several states/cities) with annual usage caps around 40–80 hours. If your employer bundles everything into one PTO pool, the pool must generally satisfy the sick-leave law's accrual floor. Hourly-accrual mode in this calculator handles the 1:30 math: enter 69 annual hours for a 2,080-hour year, or simply divide hours worked by 30.
Frequently Asked Questions
How is PTO accrual calculated?
Divide annual PTO hours by the number of accrual periods. 120 hours per year on a biweekly schedule accrues at 120 ÷ 26 = 4.62 hours per pay period.
How much PTO do I accrue per hour worked?
Divide annual PTO hours by 2,080 (40 hrs × 52 weeks). 120 annual hours gives 0.0577 PTO hours per hour worked — about 1 hour of PTO per 17 hours on the clock.
What is a normal PTO accrual rate?
US private-sector norms are 10–15 days per year early career, rising to 15–20+ with tenure — roughly 3–6 hours per biweekly paycheck. Tech and professional services trend higher; retail and hospitality lower.
Can PTO accrual be capped?
Yes. Most employers cap accrual at 1.5–2x the annual rate; once you hit the cap you stop earning until you use hours. California allows caps but prohibits taking away hours already accrued.
How does PTO accrue for part-time employees?
Usually per hour worked: annual full-time PTO ÷ 2,080 × your actual hours. A 20-hour-per-week employee accrues at exactly half the full-time pace, automatically pro-rated.
Do I accrue PTO during my first 90 days?
Most policies accrue from day one but block usage during a 60–90 day introductory period. Some delay accrual itself — check the policy wording, as the difference affects your balance all year.
Do I accrue PTO while on leave?
Typically yes during paid leave (vacation, sick, holidays) and no during unpaid leave (extended FMLA, sabbatical). Policies vary, so confirm for long leaves.
What happens to accrued PTO if I quit?
Depends on your state: California, Colorado, Illinois and others require payout of accrued unused vacation as earned wages. In policy states, the written policy decides. Calculate the value with our PTO payout calculator.
What is the 1 hour per 30 hours rule?
The most common statutory sick-leave accrual rate: employees earn one hour of paid sick leave for every 30 hours worked, used by California and many other jurisdictions as the legal minimum.
Is front-loaded PTO better than accrued PTO?
Front-loading offers early-year flexibility; accrual offers fairness and, in payout states, cleaner exit math. Compare cap, carry-over, and payout terms — not just the number of days.
✓ Formula verified • Last updated: August 20, 2026