Employers prorate salaries in different ways – by working days, calendar days or a fixed 30-day month. This calculator counts the actual working days in the chosen month.
How to use the Prorated Salary Calculator
- Month
- Year
- Gross monthly salary
- Days worked
- Approved paid leave days
- Public holidays in the month
- Working week
- Proration basis
Results update as you type, and every field accepts the units shown in its menu.
How it works
Choose the month and year, enter the monthly salary, days worked, paid leave and public holidays, and choose your working week.
Tips
- Tax figures here are estimates for planning – your actual tax depends on credits, deductions and local rules.
- Check the tax year and filing status before you rely on a result.
- Use gross (before-tax) figures unless a field asks for take-home pay.
- When in doubt, confirm with the tax authority’s own calculator or a tax professional.
Common mistakes to avoid
- Confusing marginal and effective tax rates.
- Adding sales tax to a price that already includes it.
- Forgetting payroll taxes (Social Security and Medicare) on wages.
Inputs explained
| Field | What to enter |
|---|---|
| Month | Choose one: January, February, March, April … |
| Year | A number |
| Gross monthly salary | Amount in your currency |
| Days worked | A number |
| Approved paid leave days | A number |
| Public holidays in the month | A number |
| Working week | Choose one: Monday–Friday (5 days), Monday–Saturday (6 days) |
| Proration basis | Choose one: Working days in the month, Calendar days, Fixed 30-day month |
What each result means
- Days in the month = date([Year], [Month] + 1, 1) – [First day]
- Prorated salary = min([Daily rate]×([Days worked] + [Approved paid leave days]), [Gross monthly salary])
Formula
Working days in the month = days on your working weekdays − public holidaysDaily rate = monthly salary ÷ working daysProrated salary = daily rate × (days worked + approved paid leave)Worked example
Inputs — Month: October; Year: 2,026; Gross monthly salary: $6,000; Days worked: 12; Approved paid leave days: 0; Public holidays in the month: 0; Working week: Monday–Friday (5 days); Proration basis: Working days in the month.
Results — Days in the month = 31; Working days in the month = 22; Daily rate = $272.73; Prorated salary = $3,272.73.
Frequently asked questions
How do I prorate a salary?
Divide the monthly salary by the working days in the month and multiply by the days worked.
Do weekends count?
Not when prorating by working days; they do when prorating by calendar days.
Are public holidays paid?
Usually yes for salaried staff – they are excluded from working days here.
What formula does the Prorated Salary Calculator use?
Working days in the month = days on your working weekdays − public holidays.