How to Calculate the PTO Accrual Rate (w/Examples) + FAQs

Calculating a PTO accrual rate means dividing the total paid time off an employee earns in a year by the total number of work hours, pay periods, or months in that year. The simplest formula is PTO hours per year ÷ work hours per year = hourly accrual rate, which for a full-time worker earning 80 hours of PTO comes out to about 0.0385 hours of PTO for every hour worked, as explained by the U.S. Department of Labor in its general guidance on vacation leave.

The specific problem this topic addresses is that federal law does not require employers to give paid time off, yet once PTO is promised, it often becomes a wage under state law. The governing framework starts with the Fair Labor Standards Act, which sets minimum wage and overtime rules but leaves PTO to employer policy, and extends to state wage-payment statutes that can turn unpaid accrued PTO into an unlawful wage deduction. The immediate negative consequence of miscalculating accrual is a wage claim, interest, and in some states double or treble damages under laws like the California Labor Code section 227.3.

A recent SHRM Employee Benefits Survey found that roughly 98% of U.S. employers offer some form of paid time off, and the average full-time worker accrues between 10 and 20 days of PTO per year depending on tenure. That statistic matters because even a one-minute-per-hour miscalculation across a 500-person workforce can create a five-figure wage liability within a single year.

Here is what this guide will teach you:

• 🧮 How to compute every common PTO accrual rate using clean, step-by-step math.
• 📅 Which accrual method fits hourly, salaried, part-time, and tenured employees best.
• ⚖️ Which federal and state laws control PTO payout, caps, and carryover.
• 💡 How to avoid the seven most expensive PTO calculation mistakes employers make.
• 📊 How to audit your payroll system so accrual balances match the written policy.

What PTO Accrual Really Means

PTO accrual is the process by which an employee earns paid time off gradually as they work, rather than receiving all of it at once on January 1. The concept exists because treating PTO as earned compensation aligns with how courts view vested wages under the FLSA recordkeeping rules and most state wage laws. When PTO vests hour by hour, it becomes a property right of the employee, which means the employer cannot take it back without a lawful reason.

The plain-English idea is simple: if you promise a worker 80 hours of PTO per year, they earn a tiny slice of that 80 hours each time they clock in. The consequence of ignoring this framing is that employers who try to revoke promised PTO mid-year may face a wage claim with the state labor department. A real-world example involves Maria, a bookkeeper in Sacramento who earned 40 hours of PTO by July; her employer could not legally zero out her balance even after a policy change, because the California Division of Labor Standards Enforcement treats accrued PTO as wages.

A common misconception is that PTO and vacation are legally different. In most states, including New York and Massachusetts, the two terms are interchangeable once the employer combines sick, personal, and vacation into one bucket. That combination triggers the strictest payout rule of any category included, which is why many multi-state employers keep sick leave separate from vacation.

Why Accrual Beats Lump-Sum Grants

Accrual protects both sides of the employment relationship by spreading the earning of PTO across the year. The IRS constructive receipt doctrine treats unused PTO differently depending on whether an employee had the option to cash it out, so a gradual accrual schedule gives payroll teams more control over tax timing. Without accrual, a lump-sum grant on January 1 can create a tax headache if the employee leaves in February with a large unearned balance.

The consequence of choosing a lump-sum system without clear forfeiture language is that departing employees may claim the full annual amount, not the prorated portion. For example, David, a graphic designer in Austin, received a January 1 grant of 120 hours and resigned in March; because the handbook did not define the grant as advanced rather than earned, his employer paid out the full 120 hours at separation. A mini-scenario like this shows why the written policy must say whether PTO is accrued, advanced, or front-loaded with a clawback.

A common misconception is that accrual systems always benefit the employer. In reality, accrual systems also protect employees from arbitrary revocation and give them a predictable balance they can track against upcoming trips, medical needs, or family events. The Society for Human Resource Management recommends accrual for any workforce larger than ten employees because of the audit trail it produces.

How Federal Law Frames PTO

Federal law, starting with the FLSA section on fringe benefits, does not require paid vacation, paid sick leave, or paid holidays for private employers. The Family and Medical Leave Act requires unpaid job-protected leave but allows employers to require the substitution of accrued PTO during FMLA time. That substitution rule is important because it lets employers draw down PTO balances while the employee is out on medical leave.

The consequence of ignoring the FMLA substitution rule is that employees may take 12 weeks of FMLA and then demand a full PTO balance on return, effectively doubling their leave. A real-world example involves Priya, a registered nurse in Ohio whose employer failed to require PTO substitution during her eight-week maternity FMLA; she returned with 80 hours of PTO untouched and took another two weeks off, costing the hospital additional coverage pay. The 29 CFR 825.207 regulation explicitly permits substitution when the employer’s written policy says so.

A common misconception is that the Affordable Care Act or the ERISA statute regulates PTO. Neither does, because PTO is generally classified as a payroll practice, not an employee welfare benefit plan, under 29 CFR 2510.3-1(b).

The Core PTO Accrual Formula

The universal PTO accrual formula is: Total PTO hours granted per year ÷ Total work units per year = Accrual rate per unit. The “work unit” can be an hour, a pay period, a week, or a month, and each produces a different rate. The Department of Labor opinion letters confirm that employers may choose any reasonable unit as long as the method is applied consistently.

The plain-English version is that you pick a numerator (PTO offered), pick a denominator (how often you want to credit it), and divide. The consequence of mixing units, for example crediting a weekly rate to biweekly paychecks, is that employees will accrue twice as fast or half as fast as the policy promised. A mini-scenario: Jamal, a warehouse supervisor in Atlanta, accrued at a weekly rate entered into a biweekly payroll system, so his balance was half of what the handbook said; the employer owed him back-PTO worth roughly 40 hours when HR caught the error.

A common misconception is that the formula must use 2,080 hours for every calculation. In reality, 2,080 is only the number of hours in a standard 40-hour, 52-week year; part-time and seasonal workers need a denominator that matches their actual scheduled hours, which the DOL part-time worker guidance addresses.

The 2,080-Hour Baseline Explained

The 2,080 figure comes from 40 hours per week multiplied by 52 weeks. Full-time federal employees use this baseline under 5 CFR 630.201, and most private employers follow the same convention for consistency. The consequence of using 2,080 for a part-time employee is systematic over-accrual, which can create wage liability on separation if the employee received more PTO than the policy promised.

A real-world example involves Lena, a part-time librarian working 20 hours per week in Minnesota, whose employer mistakenly used 2,080 instead of 1,040 as the denominator. Her accrual rate doubled, and when she resigned after two years, the payout was $1,900 higher than the policy intended. A common misconception is that salaried employees automatically work 2,080 hours; in truth, the FLSA exempt employee rules do not track hours at all, so employers usually assign exempt staff a flat accrual per pay period.

Converting Days to Hours

Most policies are written in days, but payroll systems run on hours, so conversion is essential. The standard conversion is days × standard workday hours = PTO hours, where the standard workday is usually 8 hours. The consequence of skipping this conversion is that an employee with a 10-hour compressed workday may try to use one “day” of PTO but only be credited 8 hours, creating a shortfall.

A real-world example involves Carlos, a firefighter in Phoenix on a 24-hour shift schedule; his department’s 15-day PTO policy only covered 120 hours, but a single shift drew 24 hours from the bank. The National Fire Protection Association guidance recommends that shift-based employers write policies in hours, not days. A common misconception is that converting days to hours is purely administrative; in fact, the conversion determines whether the policy complies with state paid-sick-leave minimums measured in hours, such as the New York Paid Sick Leave law.

Hourly Accrual Rate Method

The hourly accrual method credits PTO each time an employee works an hour. The formula is Annual PTO hours ÷ Annual work hours = PTO hours earned per hour worked. For a full-time worker earning 80 hours of PTO per year, the calculation is 80 ÷ 2,080 = 0.0385 hours of PTO per hour worked, a number widely cited by Gusto’s PTO calculator guidance.

The plain-English meaning is that every hour on the clock, the employee banks about 2.3 minutes of PTO. The consequence of using hourly accrual is that overtime hours also generate PTO unless the policy explicitly excludes them, which many state wage-payment acts allow employers to do with clear language. A mini-scenario: Rachel, a call-center agent in Denver, worked 20 overtime hours in one week; under her hourly accrual policy that did not exclude overtime, she earned an extra 0.77 hours of PTO that week.

A common misconception is that hourly accrual is only for hourly employees. Many employers apply hourly accrual to salaried non-exempt workers too, because it creates a cleaner audit trail for the DOL Wage and Hour Division during investigations.

Worked Example: 40-Hour Full-Time Employee

Consider Aisha, a full-time marketing coordinator earning 15 days of PTO per year. The math runs as follows: 15 days × 8 hours = 120 PTO hours; 120 ÷ 2,080 = 0.0577 PTO hours per hour worked. If Aisha works a standard 80-hour biweekly pay period, she accrues 80 × 0.0577 = 4.62 hours of PTO, which the American Payroll Association recommends rounding to two decimal places to avoid penny-level disputes.

The consequence of rounding differently than the policy states is that a rounding-down practice can violate the FLSA rounding rules at 29 CFR 785.48, which require rounding to average out in favor of the employee over time. A common misconception is that rounding down by a few minutes is harmless; class-action lawsuits have recovered millions from employers whose rounding systematically favored the company.

Worked Example: 30-Hour Part-Time Employee

Now consider Noah, a part-time retail associate scheduled 30 hours per week. His annual hours equal 30 × 52 = 1,560. If the employer offers 10 days of PTO based on his usual schedule, that equals 10 × 6 = 60 PTO hours (because his typical day is 6 hours). The accrual rate is 60 ÷ 1,560 = 0.0385 PTO hours per hour worked, identical to the full-time rate because the ratio stays the same.

The consequence of prorating incorrectly is that part-time workers either gain or lose hours relative to their full-time peers, creating a potential Equal Pay Act or Title VII disparate-impact claim if the error correlates with a protected class. A common misconception is that part-time workers should receive a flat lower rate; the fair approach is to keep the rate the same and let the denominator reflect actual scheduled hours.

Pay-Period Accrual Rate Method

Pay-period accrual credits a fixed amount of PTO each payday regardless of hours worked, which makes it ideal for salaried exempt staff. The formula is Annual PTO hours ÷ Pay periods per year = PTO hours per pay period. For a weekly payroll with 80 hours of annual PTO, the math is 80 ÷ 52 = 1.538 hours per week, per the widely used method taught in the Payroll.org Certified Payroll Professional curriculum.

The consequence of pay-period accrual is that a full-time salaried employee receives the same PTO credit whether they worked 35 hours or 55 hours that week, which aligns with FLSA salary-basis rules. A mini-scenario: Ben, an attorney paid biweekly, accrues 80 ÷ 26 = 3.077 hours per paycheck whether he billed 80 hours or 120 hours that period, which keeps his balance predictable.

A common misconception is that pay-period accrual violates wage laws for non-exempt workers. It does not, as long as non-exempt employees still receive their hourly pay for all worked hours; PTO is a separate benefit governed by the written policy, not the FLSA minimum-wage provisions.

Weekly, Biweekly, Semimonthly, and Monthly Rates

Different pay frequencies produce different per-period rates for the same annual total. The table below shows the per-period accrual for a 120-hour annual PTO grant.

The consequence of mixing the biweekly and semimonthly rates in a payroll system is a 4% accrual error, because 26 paychecks per year is not the same as 24. The American Institute of CPAs payroll guidance warns that this is one of the most common errors in small-business payroll migrations.

Worked Example: Biweekly Salaried Employee

Consider Sofia, a salaried HR manager earning 20 days of PTO per year. The math is 20 × 8 = 160 PTO hours; 160 ÷ 26 = 6.154 hours per biweekly paycheck. After six months (13 paychecks), Sofia has accrued 13 × 6.154 = 80 hours, exactly half of the annual grant, as expected.

The consequence of using this method without a cap is that Sofia could accumulate years of unused PTO, creating a large liability on the company balance sheet that the Financial Accounting Standards Board requires to be recorded under ASC 710. A common misconception is that unlimited accrual is a perk; in fact, many employees resent a high balance they cannot use, and accountants treat the liability as a drag on earnings.

Annual Lump-Sum Method

The annual lump-sum method grants the full PTO allotment on a single date, usually January 1 or the employee’s anniversary. The formula is simple: Annual grant = full balance on the grant date, with no ongoing accrual calculation. The Bureau of Labor Statistics reports that about 37% of private employers use some form of lump-sum grant.

The consequence of lump-sum grants is heavier administrative risk because departing employees may demand the unearned portion. A real-world example involves Henry, a sales executive in New Jersey who received 160 hours on January 1 and resigned March 15; New Jersey does not treat the unused grant as wages, but his employer still paid it because the handbook did not include a clawback clause, a nuance explained by the New Jersey Department of Labor.

A common misconception is that lump-sum grants avoid accrual accounting. The ASC 710 standard still requires the employer to expense the benefit over the service period, meaning lump-sum grants create the same bookkeeping work, just front-loaded.

When Lump-Sum Grants Make Sense

Lump-sum grants work best for small teams, executive contracts, and unionized groups where the collective bargaining agreement dictates the schedule. The consequence of choosing lump-sum for a large hourly workforce is that turnover becomes expensive, because every departing employee walks out with more PTO than they earned.

A real-world example involves a 300-person distribution center that switched from lump-sum to hourly accrual and saved approximately $185,000 in the first year by eliminating over-payment of PTO to short-tenure workers. A common misconception is that lump-sum grants improve retention; the MIT Sloan Management Review has found that retention tracks total PTO value, not the timing of the grant.

Tenure-Tiered Accrual

Tenure-tiered accrual increases the rate as the employee’s service grows, which is the most common structure in the United States. A typical tiered schedule grants 10 days in years 1–4, 15 days in years 5–9, and 20 days in years 10 and beyond. The Bureau of Labor Statistics benefits data shows that average PTO for a 20-year employee is nearly double that of a one-year employee.

The consequence of a tenure-tiered system is that the employer must track service dates precisely, because an error of even one month can shift an employee into the wrong tier. A mini-scenario: Olivia, a project manager in Chicago, hit her fifth anniversary on June 14; payroll did not update her rate until July 1, shorting her roughly 0.6 hours of PTO that the employer had to refund.

A common misconception is that tenure tiers must reset after a break in service. They usually do under the written policy, but the Uniformed Services Employment and Reemployment Rights Act requires that military leave count as continuous service, so a returning service member keeps their tier.

Example Tier Schedule

The consequence of a poorly drafted tier policy is employee confusion at the transition point, which often leads to complaints filed with the state labor board. A common misconception is that a tier change applies retroactively to the whole year; most policies apply the new rate prospectively from the anniversary date forward.

Unlimited PTO Explained

Unlimited PTO, also called flexible time off, has no accrual rate because there is no capped balance to accrue. The policy simply authorizes reasonable paid time away with manager approval. The Harvard Business Review has documented that unlimited PTO often results in employees taking less time than a capped policy, not more.

The consequence of unlimited PTO is a legal gray area in states like California, where the Supreme Court decision in McPherson v. EF Intercultural Foundation held that even “unlimited” policies may owe payout if the policy is not truly unlimited in practice. A real-world example involves a tech company in San Francisco that paid out over $400,000 in unused PTO after losing a class action, because managers routinely pressured employees to cap time off at three weeks.

A common misconception is that unlimited PTO eliminates the employer’s liability. In truth, the employer must still document the policy clearly, apply it consistently, and avoid any practice that creates an implied cap, which would convert the plan into a traditional accrual plan under state wage law.

Carryover, Caps, and Payout Rules

Carryover is the portion of unused PTO that rolls into the next year, caps are the maximum balance an employee can hold, and payout is the amount owed at separation. These three levers interact to form the total cost of the PTO program. The U.S. Department of Labor state contacts page links to each state’s wage-hour agency for the controlling rules.

The consequence of ignoring state-specific rules is a wage claim at separation. A mini-scenario: Ethan, an engineer relocating from Texas to Colorado, continued to operate under a “use-it-or-lose-it” rule after the move; Colorado’s Healthy Families and Workplaces Act and the Nieto v. Clark’s Market ruling forbid use-it-or-lose-it for vacation, so the employer owed Ethan the forfeited 56 hours.

A common misconception is that federal law allows use-it-or-lose-it everywhere. Federal law is silent, but state law controls, and several states including California, Colorado, Montana, and Nebraska restrict or prohibit forfeiture of earned vacation.

State-by-State Snapshot

The consequence of a multi-state employer using one uniform policy is near-certain violation in at least one jurisdiction. A common misconception is that remote workers are governed by the employer’s headquarters state; in most cases, the employee’s physical work location controls, as explained by the Multistate Tax Commission.

Reasonable Cap Design

A cap prevents runaway accrual and limits balance-sheet liability under ASC 710. The California DLSE guidance allows caps as long as they are reasonable, which the agency defines as no less than 1.5 to 1.75 times the annual accrual. The consequence of a cap set at exactly one year’s accrual is that California regulators will likely deem it unreasonable and order payout.

A real-world example involves a hospitality chain in Los Angeles that capped PTO at 80 hours when its annual grant was also 80 hours; the DLSE ordered the company to restore forfeited hours to 140 employees. A common misconception is that the cap can be lowered at any time; lowering a cap retroactively can constitute an unlawful wage deduction under California Labor Code 221.

Top PTO Accrual Scenarios

Below are the three most common scenarios employers face when setting up or auditing PTO accrual.

Scenario 1: New Hire in Week One

Scenario 2: Mid-Year Rate Change

Scenario 3: Separation Payout

Mistakes to Avoid

• Using 2,080 hours for part-time staff causes systematic over-accrual and wage overpayment that the employer cannot easily recover.
• Mixing pay-period units such as entering a weekly rate into a biweekly system doubles or halves accrual, creating a wage claim at audit.
• Failing to cap balances in California triggers mandatory payout of unlimited accrual under Labor Code 227.3.
• Ignoring USERRA service credit for returning military members shorts their tenure tier and can produce a federal civil-rights claim.
• Rounding accrual down violates FLSA rounding rules at 29 CFR 785.48 when rounding consistently favors the employer.
• Retroactive policy changes that reduce earned balances violate state wage statutes and generate immediate wage claims.
• Combining sick and vacation into PTO without thinking pulls the whole bucket under the strictest payout rule in the state, increasing liability.
• Not updating accrual at tenure milestones shorts employees on anniversary dates and invites small-claims actions.
• Failing to document manager approval in unlimited PTO plans creates implied caps that convert the plan into an accrual plan in California.
• Omitting overtime-exclusion language lets overtime hours generate extra PTO, which can balloon liability in production environments.

Do’s and Don’ts of PTO Accrual

• Do write the accrual method explicitly in the handbook, because ambiguity defaults to the employee under DOL interpretive guidance.
• Do audit payroll quarterly to catch rounding errors before they compound into class-action exposure.
• Do separate sick leave from vacation when operating in states with strict sick-leave minimums like New York or California.
• Do train managers on the written policy, because manager behavior can override the policy under contract-implication doctrines.
• Do keep at least three years of accrual records to satisfy the FLSA recordkeeping requirement at 29 CFR 516.
• Don’t apply one national policy without state addenda, because a single uniform rule will violate at least one state law.
• Don’t cap PTO below 1.5 times the annual accrual in California, because the DLSE will order restoration.
• Don’t use use-it-or-lose-it in Colorado, Montana, California, or Nebraska, because those states treat forfeiture as wage theft.
• Don’t advance PTO without a written clawback, because departing employees will keep the unearned portion.
• Don’t change accrual rates mid-pay-period without prorating, because the math gets messy and audit-prone.

Pros and Cons of Each Accrual Method

• Pro of hourly accrual: Every hour worked builds PTO, which feels fair to hourly staff and produces a clean FLSA audit trail.
• Pro of pay-period accrual: Predictable for salaried workers and simple to reconcile with the general ledger under ASC 710.
• Pro of lump-sum grants: Easy to administer and lets employees plan full vacations early in the year.
• Pro of tenure tiers: Rewards loyalty and reduces turnover among mid-career staff, per BLS benefits data.
• Pro of unlimited PTO: Eliminates balance-sheet liability and simplifies payroll entirely.
• Con of hourly accrual: Overtime can inflate PTO earnings if the policy does not exclude it.
• Con of pay-period accrual: Part-time employees may feel shortchanged if rates are flat regardless of hours.
• Con of lump-sum grants: High separation liability and complex clawback mechanics.
• Con of tenure tiers: Requires careful anniversary tracking and creates disputes at transition dates.
• Con of unlimited PTO: California and New Jersey courts have held that unclear unlimited policies still owe payout, as shown in McPherson v. EF Intercultural Foundation.

Step-by-Step PTO Accrual Setup Process

Setting up PTO accrual requires a sequence of decisions, each with its own consequence. The SHRM how-to guide recommends a ten-step process that starts with legal review and ends with manager training.

• Step 1: Review state and local laws for every jurisdiction where employees work, because the DOL state contacts directory links to each state’s wage-hour agency.
• Step 2: Choose an accrual method (hourly, pay-period, lump-sum, tiered, or unlimited) based on workforce composition and administrative capacity.
• Step 3: Set the annual PTO amount by tenure tier, referencing BLS benefits data for competitive benchmarks.
• Step 4: Define the cap, carryover rule, and separation payout clause in plain English, with cross-references to state law.
• Step 5: Decide whether to separate sick leave from vacation to avoid pulling the whole bucket under strict sick-leave rules.
• Step 6: Write the handbook language, including the formula, the cap, and the clawback, and have employment counsel review.
• Step 7: Configure the payroll system with the exact rate, rounding method, and pay-period frequency.
• Step 8: Communicate the policy in writing with a signed acknowledgment from each employee.
• Step 9: Train managers on approval authority, substitution rules under 29 CFR 825.207, and documentation requirements.
• Step 10: Audit accrual balances quarterly and correct rounding errors before they become systemic.

The consequence of skipping Step 1 is an illegal policy somewhere in the country; the consequence of skipping Step 10 is a class-action plaintiff’s dream.

Key Court Rulings on PTO

Several court rulings shape how PTO accrual works in practice. In Suastez v. Plastic Dress-Up Co., the California Supreme Court held that vacation pay vests as it is earned, establishing the rule that PTO is wages. In Nieto v. Clark’s Market, the Colorado Supreme Court ruled that employers cannot forfeit earned vacation under the state’s Wage Claim Act.

The consequence of ignoring Suastez is that any California employer attempting forfeiture faces automatic wage-theft liability. A mini-scenario: a boutique law firm in San Diego tried to cap vacation at the annual grant; after Suastez was cited in a demand letter, the firm restored balances to 23 former associates.

A common misconception is that court rulings only bind the parties involved. In reality, state supreme court rulings interpret wage statutes broadly, and the National Employment Law Project tracks how these precedents cascade to every employer in the state.

FAQs

Does federal law require PTO accrual?

No. The FLSA does not mandate paid vacation or sick leave for private employers; PTO is governed by employer policy and, once promised, by state wage-payment laws.

Is accrued PTO considered wages?

Yes. Most states, including California, Colorado, Illinois, and Massachusetts, treat accrued PTO as earned wages, meaning it cannot be forfeited and must be paid at separation under the written policy.

Can an employer cap PTO accrual?

Yes. Caps are lawful in every state, but California requires the cap to be at least 1.5 to 1.75 times the annual accrual per DLSE guidance; unreasonable caps are unenforceable.

Is use-it-or-lose-it legal?

No. It is prohibited in California, Colorado, Montana, and Nebraska; other states allow it only if employees have a reasonable chance to use their PTO before forfeiture.

Must overtime hours generate PTO?

No. Employers may exclude overtime from the accrual denominator if the written policy says so; without clear exclusion language, overtime hours do accrue PTO.

Do part-time employees accrue at the same rate?

Yes. The per-hour rate is usually the same, but the annual denominator reflects actual scheduled hours, so total PTO is prorated to match part-time schedules.

Can PTO be used during FMLA leave?

Yes. Employers may require substitution of accrued PTO during FMLA leave under 29 CFR 825.207 when the written policy provides for it.

Is unlimited PTO really unlimited?

No. California courts in McPherson v. EF Intercultural Foundation held that unclear unlimited policies can still owe payout, so the plan must be truly unrestricted in practice.

Does tenure credit reset after rehire?

No. Only if the written policy says so, and USERRA requires military leave to count as continuous service regardless of policy language.

Can accrual rates change mid-year?

Yes. Prospective changes are lawful in every state, but retroactive reductions of earned PTO violate state wage laws and trigger wage-theft claims.

Must employers pay out PTO at termination?

Yes. In California, Colorado, Illinois, Louisiana, Massachusetts, and several other states payout is mandatory; in remaining states the written policy controls payout obligations.

How should employers record PTO liability?

Yes, they must record it. ASC 710 requires accrual of compensated absences as a liability as the benefit is earned, regardless of whether the policy is lump-sum or accrual-based.

Can employers advance PTO before it is earned?

Yes. Advances are lawful if the policy includes a written clawback provision; without one, departing employees keep the unearned PTO per state wage-deduction rules.

Is PTO payout taxed differently?

No. PTO payout is taxed as ordinary wages subject to IRS supplemental-wage withholding rules, with the same FICA and income-tax treatment as regular pay.