Annual Leave Proration Calculator
Prorate an annual leave entitlement according to the share of the leave year employed or eligible.
How to use this calculator
- Enter full-year entitlement and the eligible portion of the applicable leave year, plus your policy rounding increment.
- Check that all inputs use the same units, time period and population scope.
- Change one assumption at a time when comparing scenarios.
Formula used by annual leave proration calculator calculator
Prorated entitlement = full-year entitlement × eligible days ÷ days in leave year.
- Prorated entitlement = full-year entitlement × eligible days ÷ days in leave year.
- Employment law, contract terms, working days, leave-year convention and company rounding rules vary. Treat the result as arithmetic, not legal advice.
- The tool validates entered values and formats results for readability; it does not verify assumptions against external records.
Worked examples
Worked example
25 days annual entitlement, 183 eligible days in a 365-day year.
25 × 183 ÷ 365 ≈ 12.53 days before policy rounding.
Unrounded prorated entitlement is about 12.53 days.
Understanding the result
Prorate an annual leave entitlement according to the share of the leave year employed or eligible.
Employment law, contract terms, working days, leave-year convention and company rounding rules vary. Treat the result as arithmetic, not legal advice.
Important notes
Employment law, contract terms, working days, leave-year convention and company rounding rules vary. Treat the result as arithmetic, not legal advice.
Treat the result as an estimate based on the entered inputs. For regulated, engineering, employment, tax or business decisions, check applicable official rules, specifications and professional guidance.
Frequently asked questions
Should I use calendar or working days?
Use the denominator and eligibility measure required by your contract or local rules; the calculation does not choose that policy.
Can the result be rounded up?
Only according to the applicable employment policy or law; review the unrounded result as well.
How should I use the result?
Employment law, contract terms, working days, leave-year convention and company rounding rules vary. Treat the result as arithmetic, not legal advice.
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Related explanations
Learn the method behind the number or compare the terminology before using the calculator.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.