CPF Contribution Formula Explained, With Examples
Every cpf contribution result comes from one formula. Once you understand what goes into it, you can sanity-check any figure you are given, whether by an employer, a bank, a teacher or another website.
The formula
Total CPF = (employer rate + employee rate) × wage up to S$8,000, rounded to the nearest dollar; the employee share drops cents, and the employer pays the rest. For age 55 and below the rates are 17% employer and 20% employee.
What each input means
- Monthly salary (S$): the value you enter in the calculator.
- Age (years): the value you enter in the calculator.
Example
For example, with these inputs:
- Monthly salary (S$): 5,000
- Age (years): 30
the calculator returns:
- Your CPF (employee share): S$1,000.00
- Employer CPF: S$850.00
- Total CPF contribution: S$1,850.00
- Wage counted for CPF: S$5,000.00
How the result changes
The table keeps the other inputs at their example values and changes monthly salary (s$).
| Monthly salary (S$) | Your CPF (employee share) | Employer CPF | Total CPF contribution | Wage counted for CPF |
|---|---|---|---|---|
| 5,000 | S$1,000.00 | S$850.00 | S$1,850.00 | S$5,000.00 |
| 2,500 | S$500.00 | S$425.00 | S$925.00 | S$2,500.00 |
| 3,750 | S$750.00 | S$638.00 | S$1,388.00 | S$3,750.00 |
| 6,250 | S$1,250.00 | S$1,063.00 | S$2,313.00 | S$6,250.00 |
| 7,500 | S$1,500.00 | S$1,275.00 | S$2,775.00 | S$7,500.00 |
Why it matters
In Singapore, payslip maths decides how much you can save, invest and spend, and CPF takes a sizeable share before the money reaches your bank account. Knowing the numbers in advance makes salary negotiations, job switches and budgeting far less of a guess.
The Employment Act sets out how hourly and daily rates are calculated for overtime, public holiday work and salary deductions. These formulas use the monthly basic rate of pay rather than gross salary, which is why the numbers can look lower than a simple division of your salary by hours worked.
Payslips must be itemised, showing basic pay, allowances, overtime, deductions and CPF. Comparing a payslip against an independent calculation is the easiest way to catch mistakes, especially in the first month of a new job, after a pay rise, or when you cross an age band.
Total compensation in Singapore is more than the number on your offer letter. Employer CPF, variable bonuses, the Annual Wage Supplement (often called the 13th month) and benefits all add value, and comparing offers on take-home pay alone can hide meaningful differences.
Related calculations
- CPF Special Account Interest Calculator: Projects Special Account growth at the 4% floor rate.
- Take-Home Pay Calculator: Shows what lands in your bank account each month after the employee CPF deduction, for Singapore Citizens and full-rate PRs.
- Employer CPF & Hiring Cost Calculator: Estimates the full monthly cost of employing a local worker: salary, employer CPF and the Skills Development Levy.
- CPF on Bonus (Additional Wage) Calculator: Calculates CPF on a bonus or other additional wage using the AW ceiling of S$102,000 minus the ordinary wages already subject to CPF in the year.
Use the CPF Contribution Calculator to plug in your own numbers.
Run your own numbers: CPF Contribution Calculator