Pro-Rated Annual Leave in Singapore: 5 Mistakes to Avoid
Calculates leave earned for part of a year. MOM rounds fractions below half a day down and half a day or more up to a full day. The maths is not complicated, but a handful of errors come up again and again in this and related cpf & salary calculations. Here is what to watch for.
Contribution rates fall as workers get older, to keep older workers employable while their retirement savings continue to grow. The Government has been raising rates for workers above 55 in stages since 2022, with the latest change in January 2026 and another planned for 2027, so figures for senior workers change more often than for younger employees.
CPF distinguishes between ordinary wages, which are paid for work in the month such as basic salary and fixed allowances, and additional wages, such as annual bonuses and leave encashment. Ordinary wages are capped at S$8,000 a month from January 2026, while additional wages are capped by an annual ceiling of S$102,000 minus the ordinary wages already subject to CPF in the year.
1. Mixing up gross and basic salary
Overtime and many MOM formulas use basic salary, while CPF uses total ordinary wages including fixed allowances.
2. Treating bonuses like ordinary wages
Bonuses are additional wages, subject to the annual S$102,000 ceiling minus ordinary wages already counted.
3. Using the wrong age band
Rates change at 55, 60, 65 and 70, and the new rate applies from the first day of the month after the birthday.
4. Applying CPF to the full salary above the ceiling
Only the first S$8,000 of monthly ordinary wages attracts CPF. Applying the rate to a S$10,000 salary overstates CPF by S$740 a month for those 55 and below.
5. Counting employer CPF as take-home pay
Employer contributions go straight into CPF accounts. They are part of your package but never appear in your bank account.
The correct method
Pro-rated leave = (completed months ÷ 12) × full-year entitlement.
For example, with these inputs:
- Full-year leave entitlement (days): 14
- Completed months of service this year: 7
the calculator returns:
- Leave earned: 8 days
- Exact pro-rated value: 8.1667 days
Related calculations
- Monthly to Hourly Rate Calculator: Converts a monthly salary into the hourly rate MOM uses for overtime and deductions.
- Daily Rate of Pay Calculator: Finds the daily rate of pay used for public holiday work, rest days and unpaid leave deductions.
- Pro-Rated Salary Calculator: Calculates salary for an incomplete month, such as when you join or leave mid-month.
- Salary Increment Calculator: Shows the new salary after a percentage raise and how much more you earn per year.
The Pro-Rated Annual Leave Calculator applies the formula consistently, so it is a quick way to double-check your own working.
Run your own numbers: Pro-Rated Annual Leave Calculator