Vacation accrual works by earning paid time off in small increments as you work, rather than receiving a full year’s worth of days upfront. So how does vacation accrual work in practice? Your employer sets a formula — usually a fraction of an hour per hour worked, a flat amount each pay period, or a set number of days each month — and your balance grows until you use it, hit a cap, or leave the company. No federal law requires paid vacation at all, but once an employer puts a policy in writing, the rules for earning, banking, and cashing out that time are enforceable under state law.1U.S. Department of Labor. Vacation Leave
How Your Time Adds Up Each Pay Period
Most employers use one of three formulas. Which one applies to you usually depends on how payroll is run: hourly workers tend to accrue by the hour or by the pay period, while salaried employees often accrue monthly.
- Per-hour accrual. You earn a fraction of an hour of vacation for each hour you work. A rate of 0.04 hours per hour worked comes out to about 1.6 hours per 40-hour week, or roughly 83 hours (just over 10 days) across a full year.
- Per-pay-period accrual. You receive a flat amount each pay period regardless of exact hours. Federal employees with fewer than three years of service, for example, earn 4 hours per biweekly pay period, which adds up to 104 hours (13 days) over 26 pay periods.2U.S. Office of Personnel Management. Fact Sheet: Annual Leave (General Information)
- Monthly accrual. You earn a set number of days each month. A rate of 1.25 days per month yields 15 days over a full year.
Part-Time Schedules
If you work part time, most employers prorate your vacation using a full-time equivalent (FTE) ratio. Start with the full-time entitlement — say, 15 days per year — divide your weekly hours by the full-time standard (20 ÷ 40 = 0.5 FTE), and multiply: 15 × 0.5 = 7.5 days per year. Other employers skip the FTE step and simply apply a per-hour rate, such as 1 hour of vacation per 40 hours worked, which adjusts to your schedule automatically. For irregular schedules, the employer may average your hours over a representative period.
What Changes How Fast You Accrue
Length of Service
Many employers raise your accrual rate at tenure milestones. Private-sector workers average 11 vacation days after 1 year of service, 15 days after 5 years, 18 days after 10 years, and 20 days after 20 years.3U.S. Bureau of Labor Statistics. Paid Leave Benefits: Average Number of Sick and Vacation Days by Length of Service Requirement The step-ups should be laid out in your written policy.
Unpaid Leave
Unpaid time away usually pauses accrual until you return to active status. Under the Family and Medical Leave Act, whether you keep accruing during FMLA leave depends on how your employer treats other comparable leaves. If the company continues accrual for employees on paid leave but stops it for unpaid leave, the same rule applies to FMLA leave.4eCFR. 29 CFR 825.209 – Maintenance of Employee Benefits
Military Service
If your employer provides vacation accrual to employees on any comparable leave of absence, such as a sabbatical, it must give you the same benefit during military service, and specifically the most favorable treatment offered for any comparable form of leave.5eCFR. 20 CFR 1002.150 – Non-Seniority Rights and Benefits During Service Your employer also cannot force you to burn your earned vacation during a military absence. The one exception is when all employees are required to take time off at the same time, such as a plant shutdown.6U.S. Department of Labor. USERRA Advisor – Vacation Accruals
Caps, Carryover, and Use-It-or-Lose-It
Most employers set a ceiling on how many vacation hours you can bank at one time. Once you hit that cap — say, 200 or 240 hours — you stop accruing until you use enough to drop below the limit. A cap is not the same thing as a use-it-or-lose-it policy. A cap pauses accrual; use-it-or-lose-it wipes out your entire unused balance on a specific date, such as December 31.
Whether your employer can enforce use-it-or-lose-it depends on your state. A handful of states prohibit forfeiture of accrued vacation outright, treating earned time as wages that cannot be taken back. Many other states allow use-it-or-lose-it as long as the policy is in writing and you have a reasonable opportunity to use the time first. If your employer has no written policy addressing forfeiture, unused vacation generally rolls into the next year.
Employers can change caps and carryover rules going forward, but they cannot retroactively erase time you have already earned. Under a union contract or individual employment agreement, changes typically require negotiation.
Unlimited PTO Is Different
Some employers offer unlimited paid time off, with no set number of days to earn or bank. That structure matters when you leave: because no specific amount accrues, there is generally nothing to pay out at termination, even in states that require payout of accrued vacation under traditional policies. One caveat — if an employer calls the policy unlimited but in practice caps how much time you can actually take, some states may treat it as a measurable benefit that triggers payout obligations. How it works matters more than what it is called.
Getting Paid for Unused Vacation When You Leave
In more than a dozen states, accrued vacation is classified as earned wages, and your employer has to pay out any unused balance when you resign or are terminated. In the rest, whether you get a payout depends on the company’s written policy. If the policy is silent, your state’s default rule applies, and those defaults vary widely.
How the Payout Is Calculated
Employers usually multiply your unused vacation hours by your final hourly rate. If you are salaried, that hourly rate is typically derived by dividing your annual salary by 2,080 (52 weeks × 40 hours). The payout may appear on your final paycheck or on a separate check issued within a set timeframe.
Final Paycheck Deadlines
The deadline for your final paycheck, including any vacation payout, varies by state. It can be as short as 24 hours or as long as the next regular payday. Some states set a tighter deadline when you are fired than when you quit. A few states have no specific final-paycheck law at all, in which case the next regular payday generally applies.
Penalties for Late Payment
Employers who fail to pay out earned vacation on time can face state-level consequences. These commonly include liquidated damages (often equal to or exceeding the unpaid amount), daily waiting-time penalties that keep accruing until the check arrives, and in some places double or triple the wages owed. Penalties can quickly exceed the original balance.
If You Leave With a Negative Balance
If your employer let you take vacation before you earned it and you leave in the red, the company may be able to deduct the overpayment from your final paycheck. A Department of Labor opinion letter treats this like repaying a loan under the FLSA: the employer can recover the unearned amount even if the deduction drops your final pay below minimum wage, provided you were told about the policy in advance.7U.S. Department of Labor. FLSA Compliance Assistance, FLSA2004-17NA The deduction has to use the pay rate that was in effect when you took the vacation, not your current rate. Some state laws restrict or prohibit this type of deduction, so the federal guidance is not always the final word.
Taxes on Your Vacation Payout
A vacation payout at termination counts as supplemental wages for federal tax purposes. Your employer will withhold federal income tax at a flat 22% rate. If your total supplemental wages for the year exceed $1 million, the portion above that threshold is withheld at 37%.8Internal Revenue Service. Publication 15 – Employer’s Tax Guide Social Security (6.2%) and Medicare (1.45%) apply the same way they do to regular wages. State income tax withholding varies.
The flat 22% federal rate is often higher than the effective rate on your regular paycheck, which can make the payout look smaller than you expected. If the withholding turns out to be more than you actually owe for the year, you get the difference back at tax time.