Prorated salary inputs
Enter your monthly salary, payroll month and employment period within that month. Choose whether to calculate based on calendar days, working days or a fixed 26-day basis.
Your estimated result
Estimated prorated salary
Use this as an estimate for partial month salary. CPF and tax are not deducted in this result.
How this prorated salary calculator works
This calculator estimates salary for an incomplete month. This usually happens when an employee joins mid-month, resigns before the month ends, takes unpaid leave, or has only worked part of the payroll month.
Use the employee’s fixed monthly basic salary before CPF, tax or other deductions.
Select the first and last date that should be paid within the salary month.
Calculate using calendar days, working days or a fixed 26-day daily rate basis.
Prorated salary formula
A common way to estimate prorated salary is to calculate a daily rate, then multiply it by the number of payable days.
| Basis | Formula | Common use |
|---|---|---|
| Calendar days | Monthly salary ÷ calendar days in the month × payable calendar days | Simple partial-month calculation for joining or leaving mid-month. |
| Working days | Monthly salary ÷ working days in the month × payable working days | Useful when payroll is based on Monday to Friday working days. |
| Fixed 26-day basis | Monthly salary ÷ 26 × payable days | Often used for daily rate estimates, unpaid leave or salary deduction estimates. |
When do you need prorated salary?
Prorated salary is usually needed when an employee does not work the full salary month. Instead of paying the full monthly salary, payroll calculates only the portion that should be paid.
An employee starts work in the middle of the month and should only receive salary from the start date.
An employee’s last day is before the month end, so final salary is paid up to the last working day.
An employee takes unpaid leave, no-pay leave or has unpaid absence during the month.
Prorated salary examples
These examples show how the calculator can be used for common Singapore payroll situations.
| Scenario | Monthly salary | Example calculation | Estimated salary |
|---|---|---|---|
| New joiner starts on 16 July 2026 | S$4,000 | S$4,000 ÷ 31 × 16 calendar days | About S$2,064.52 |
| Employee resigns with last day on 20 July 2026 | S$4,000 | S$4,000 ÷ 31 × 20 calendar days | About S$2,580.65 |
| Employee takes 3 days unpaid leave | S$4,000 | S$4,000 - (S$4,000 ÷ 26 × 3 days) | About S$3,538.46 |
| Working day basis, paid 10 of 23 working days | S$4,000 | S$4,000 ÷ 23 × 10 working days | About S$1,739.13 |
Calendar days vs working days vs 26 days
The result can be different depending on the basis used. This is why employees and employers should be clear about the payroll method used for partial month salary.
Counts every day in the month, including weekends and public holidays.
Counts only Monday to Friday in this calculator. Public holidays are not separately removed.
Uses monthly salary divided by 26. This is commonly seen in salary deduction estimates.
Important notes before using the result
Prorated salary is a payroll estimate. Before relying on the result, check how your company calculates partial month salary and whether any other pay components should be included.
| Item | What to check |
|---|---|
| Basic salary | Confirm whether the calculation should use basic salary only or gross monthly salary. |
| Allowances | Some allowances may be prorated, while others may not be payable for partial months. |
| CPF | CPF is not deducted in this calculator. CPF may apply separately based on actual wages paid. |
| Overtime | Overtime pay should usually be calculated separately from prorated basic salary. |
| Public holidays | This calculator does not remove Singapore public holidays from working days automatically. |
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View All Guides →Frequently Asked Questions
What is prorated salary?
Prorated salary is a partial salary amount paid when an employee does not work the full salary month. It is commonly used for new joiners, resigning employees, unpaid leave or incomplete month payroll.
How do I calculate prorated salary in Singapore?
A common method is monthly salary divided by the number of days in the payroll basis, then multiplied by the number of payable days. The basis may be calendar days, working days or a fixed 26-day basis.
Should prorated salary be based on calendar days or working days?
It depends on the employment contract and company payroll policy. Calendar days are simple and common for partial months, while working days may be used when payroll is based on actual working days.
Is CPF deducted from prorated salary?
This calculator does not deduct CPF. In practice, CPF is generally calculated separately based on the actual wages paid and the employee’s CPF eligibility.
How is salary calculated if I resign mid-month?
Your final month salary is usually calculated up to your last day of employment, then adjusted for any unpaid leave, deductions, CPF, allowances or other payroll items.
How is salary calculated if I join mid-month?
Your first month salary is usually prorated from your start date to the end of the salary month, based on the company’s payroll formula.
Does this calculator include public holidays?
For calendar day basis, public holidays are naturally included because all calendar days are counted. For working day basis, this calculator counts Monday to Friday only and does not separately remove Singapore public holidays.
Can unpaid leave be deducted using the 26-day formula?
Some employers use monthly salary divided by 26 to estimate daily salary deduction. However, the actual method should follow the employment contract, HR policy or payroll practice.
Is this prorated salary calculator official?
No. SG Salary Tools provides general planning calculators only. For exact payroll treatment, check your employment contract, HR policy or seek professional advice.