Accrued vs. Lump-Sum PTO: How Paid Time Off Policies Work

Paid time off comes in two broad flavors: you either earn it gradually as you work, or you receive the whole year’s allowance at once. Both are common, both have trade-offs, and the one your employer uses affects how much time off you have available at any given moment. Here is how the two models actually work.

Accrued PTO: earning as you go

With an accrual policy, your balance grows little by little — per hour worked, per pay period, or per month. Work more, and you bank more time off; early in the year your balance is small and it builds as you go. This is the model behind phrases like “holiday accrual” in the UK and “PTO accrual” in the US. The core idea is a simple rate: your annual entitlement divided by the hours you work in a year.

Lump-sum PTO: the full allowance up front

With a lump-sum, or “front-loaded,” policy, your entire allowance lands in your account at the start of the year (or your work anniversary). You can, in principle, take a two-week holiday in January before you have technically “earned” it. It is simpler to understand and plan around, which is why many salaried roles use it.

The trade-offs

• Flexibility: lump-sum gives you the whole balance immediately; accrual makes you wait for it to build.
• Risk for the employer: with lump-sum, someone could take all their leave and then resign, having used more than they accrued. Accrual limits that exposure.
• Leaving mid-year: under accrual you are typically paid out only what you have earned; under lump-sum, employers may claw back leave taken “in advance” of what you accrued, depending on policy and local law.
• Predictability: lump-sum is easier to plan around; accrual rewards continuous service and part-year workers more fairly.

A quick example

Say you get 20 days off a year on an 8-hour day, 40-hour week. Under a lump-sum policy, all 160 hours (20 × 8) are available from day one. Under an accrual policy, you earn 160 ÷ 2,080 ≈ 0.077 hours of PTO for every hour worked — about 3.1 hours a week — so by mid-year you would have banked roughly 80 hours, or ten days.

Caps, carryover, and payout

Both models come with fine print. Accrual policies often set a maximum balance, after which you stop earning until you use some time. Many employers cap how much unused leave you can carry into the next year, and rules on paying out unused PTO when you leave vary by employer and jurisdiction. Always read your specific policy — these details matter more than the headline number of days.

Why it matters

Knowing which model you are on tells you how much leave you can take right now, what happens to unused days, and what you would be owed if you moved on. If you are on an accrual policy, the practical question is usually “how much have I earned so far?”

Work out your balance

For accrual policies, the PTO accrual calculator turns your entitlement and schedule into an hourly accrual rate and shows how much time off you have built up from the hours you have worked — including a clean hours-to-days conversion.