PTO is calculated one of three ways: an hourly accrual rate applied to every hour you work, a fixed deposit added at the end of each pay period, or a lump-sum grant handed to you at the start of the year. No federal law requires private employers to offer paid time off, so the formula, the accrual speed, and any balance limits come from company policy, with a growing number of states setting a minimum accrual floor underneath it.1U.S. Department of Labor. Vacation Leave Your employee handbook tells you which method your employer uses.
Hourly Accrual: PTO Earned Per Hour Worked
Hourly accrual is the most granular method. The employer divides your annual PTO grant by 2,080, the number of hours in a standard full-time work year (52 weeks times 40 hours). The result is the PTO you earn for every hour on your timesheet.
If your company grants 80 hours of PTO per year:
80 ÷ 2,080 = 0.0385 hours of PTO earned per hour worked
Work a 40-hour week and you earn about 1.54 hours (40 × 0.0385). Work a 30-hour week and you earn about 1.16 hours. The balance grows in direct proportion to hours actually worked, which is why this method is common in retail, hospitality, and healthcare where schedules fluctuate.
One wrinkle on the divisor. The federal government uses 2,087 rather than 2,080 for computing hourly rates, because a Government Accountability Office study found that over a 28-year calendar cycle the average work year is 2,087 hours.2U.S. Office of Personnel Management. Fact Sheet: Computing Hourly Rates of Pay Using the 2,087-Hour Divisor Most private employers stick with 2,080. Check your handbook to see which divisor drives your rate.
Do Overtime Hours Build PTO?
Federal law requires time-and-a-half pay for hours over 40 in a workweek, but it says nothing about PTO accrual on those hours.3Office of the Law Revision Counsel. 29 U.S. Code 207 – Maximum Hours Some employers count every paid hour toward accrual; others cap accrual at 40 hours per week. Your offer letter or handbook should say which rule applies.
Pay-Period Accrual: A Fixed Deposit Each Payroll Cycle
Rather than tracking individual hours, many employers deposit the same chunk of PTO into your balance at the end of every payroll cycle. The formula divides your annual allotment by the number of pay periods:
- Biweekly (26 pay periods): 120 annual hours ÷ 26 = about 4.62 hours per paycheck
- Semimonthly (24 pay periods): 120 ÷ 24 = 5.00 hours per paycheck
- Weekly (52 pay periods): 120 ÷ 52 = about 2.31 hours per paycheck
- Monthly (12 pay periods): 120 ÷ 12 = 10.00 hours per paycheck
The year-end total is identical across cadences. Only the size and timing of each deposit changes. This method works well for salaried employees on consistent schedules because the balance climbs predictably and ignores week-to-week variation like leaving an hour early on a Friday.
One catch: most pay-period policies require you to be in active, paid status for the whole period to receive that cycle’s deposit. Extended unpaid leave or a mid-period status change can shrink or skip the deposit. HR can confirm whether your policy allows partial-period credit.
Front-Loaded Allotments: The Full Balance on Day One
Some employers skip gradual accrual and grant your entire annual balance on a single date, usually January 1 or your hire anniversary. You can book a two-week vacation in February without waiting for hours to build.
The tradeoff appears if you leave before the year ends. Because you received the full balance upfront but only earned a portion of it chronologically, the employer may treat the difference as an advance. For nonexempt (hourly) employees, federal law generally allows deducting unearned PTO from the final paycheck if the policy was communicated in advance and the deduction reflects the pay rate at the time the leave was taken. For exempt (salaried) employees, clawing back partial-day absences is far more restricted under federal wage rules. State law adds another layer, and a few states prohibit final-paycheck deductions for advanced PTO no matter how the employee is classified.
What Changes Your Accrual Rate
Part-Time Schedules
Part-time employees usually use the same per-hour multiplier as full-time staff, but fewer weekly hours produce a smaller balance. If full-time workers earn 0.05 hours of PTO per hour worked, a 20-hour-a-week employee earns 1.0 hour weekly (0.05 × 20) against 2.0 hours for someone at 40. Under a pay-period model, the employer typically prorates the per-period deposit to match contracted hours.
Seniority Tiers
Many companies raise your annual allotment at tenure milestones. A common structure:
- Years 1–3: 10 days (80 hours) per year
- Years 4–5: 15 days (120 hours) per year
- Years 6–10: 20 days (160 hours) per year
- Years 10+: 25 days (200 hours) per year
When you cross a milestone, the payroll system updates your multiplier. Moving from an 80-hour to a 120-hour allotment changes your hourly rate from 0.0385 to 0.0577 (120 ÷ 2,080). Some companies apply the bump on your anniversary; others wait for the next calendar year.
New-Hire Waiting Periods
Some employers impose a 30-, 60-, or 90-day probationary window before PTO starts accruing. Others begin accrual on day one but block use until probation ends. Where state paid sick leave laws apply, those rules can override an employer’s waiting period for the sick-leave portion of your benefits.
Accrual Caps and Carryover Limits
How Caps Freeze Future Accrual
An accrual cap sets a ceiling on the total balance you can hold. Once you hit it (say 240 hours), no new PTO accrues until you use some and drop below the limit. Hours you would have earned during the freeze are lost. Caps do not confiscate what you have already earned; they only pause further earning, which is why they are generally lawful even in states that treat earned PTO as protected wages.
Carryover and Use-It-or-Lose-It
Carryover rules govern how much unused PTO survives into the next year. A policy might let you roll 40 hours forward and forfeit the rest. A stricter use-it-or-lose-it policy wipes out any unused balance at the reset date.
Enforceability depends on where you work. A small number of states, including California, Montana, and Nebraska, expressly prohibit use-it-or-lose-it policies and treat earned time off as wages that cannot be taken away. Several other states require payout of unused vacation at termination but are less clear about mid-year forfeiture. In states without restrictions, employers set carryover rules as they see fit.
State Minimums That Override Employer Policy
Roughly 20 states and the District of Columbia mandate some form of paid leave, most often paid sick leave.1U.S. Department of Labor. Vacation Leave These laws set minimum accrual ratios that override any less generous employer formula.
The most common mandated rate is one hour of paid leave for every 30 hours worked. Other jurisdictions use ratios of one hour per 35, 37, 40, or 52 hours worked depending on state and employer size. Annual usage caps in these states typically fall between 24 and 56 hours, so you may keep accruing past the point where the state allows you to actually use the mandated hours in a single year.
If your employer already provides PTO at or above the state minimum, the mandate changes nothing for you. If the policy falls short, the state floor applies. This matters most for part-time and hourly workers whose employers might not offer PTO voluntarily.
Does PTO Keep Accruing During Unpaid Leave?
Whether your balance grows during a leave of absence depends on the type of leave and your employer’s written policy. Under federal FMLA regulations, an employer must continue PTO accrual during FMLA leave only if it does so for employees on other comparable forms of leave.4eCFR. 29 CFR 825.209 – Maintenance of Employee Benefits In practice, many employers keep accrual running while you are burning paid leave and pause it once you shift to unpaid status. The same pattern generally applies to other unpaid leaves, military leave, and workers’ compensation leave. State family-leave laws may go further than the FMLA, so check local rules for an extended absence.
PTO Payout at Separation
No federal law requires employers to pay out unused PTO when you resign or are fired. Whether you get a check depends on state law and the employer’s policy. A handful of states treat earned vacation or PTO as wages that must be paid at your final rate whenever employment ends. The majority of states require payout only if the employer’s written policy or employment agreement promises it, and a silent or explicit-denial policy means nothing is owed. A few states leave the question unsettled.
If you received a front-loaded allotment and leave before earning all of it, the employer may prorate what you actually accrued and either pay out only that portion or deduct the overage from your final check, subject to the classification and state rules covered above.
How the Payout Is Taxed
A PTO payout at termination, or a cash-out during employment if your company allows one, counts as supplemental wages for federal tax purposes. When your total supplemental wages for the year are $1 million or less, the employer withholds a flat 22 percent for federal income tax. Anything above $1 million is withheld at 37 percent.5Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide Social Security and Medicare taxes apply as they would to regular wages.
The 22 percent flat figure is a withholding rate, not your actual tax rate. If your total income puts you in a lower bracket, you may recover some of the withholding as a refund. In a higher bracket, you could owe more at filing. For a large payout, adjusting your W-4 or setting aside extra cash can prevent a shortfall in April.