By Intious · Updated September 10, 2026
Partial-period PTO depends on the accrual method. An hourly policy uses eligible hours; a fixed-period policy may use a specified proration rule or no proration at all.
Try the calculator with your own figures.
Identify the method before doing the arithmetic
A new starter who works half a pay period does not automatically earn half the normal PTO. First establish whether earning is hourly, fixed per period or granted on another basis. Read the rules for start dates, waiting periods and eligibility. This guide illustrates arithmetic and does not establish an entitlement.
Example: hourly accrual
At 80 PTO hours per 2,080 eligible hours, a starter with 32 eligible hours earns 32 × 80 ÷ 2,080 = 1.23076923 PTO hours before rounding. Use the hours that qualify under the policy, rather than calendar days since the start date. A partial period with no eligible hours earns zero under this example hourly method.
Example: proportional fixed-period accrual
Suppose the written rule allows a 3.07692308-hour period allowance to be prorated by eligible scheduled workdays. Working four of the period's ten eligible workdays gives 3.07692308 × 4 ÷ 10 = 1.23076923 hours. The equal result is coincidental to these inputs. Using calendar days, scheduled hours or a different denominator could change it.
Keep a short audit trail
Record the start date, covered period, eligibility rule, numerator, denominator, rate and rounding method. If a waiting period applies, determine when accrual begins and when hours become usable; those may be different dates. Do not assume a missing first-period accrual is an error without checking the governing policy.
Frequently asked questions
Can I just divide the normal accrual by two?
Only when the policy allows proportional accrual and the employee completed exactly half of the applicable eligible period.
Should holidays be included in the denominator?
Use the policy's definition of eligible days or hours. The calculator cannot decide that rule for you.