Free Prorated Salary Calculator
A prorated salary calculator works out how much of a regular salary paycheck is owed when someone is paid for only part of a pay period, such as a mid-month start, a final paycheck, or unpaid leave. It divides the full-period pay by the days in the period and multiplies by the eligible days.
Partial month and pro rata payEstimated prorated gross pay
$2,836.36
$5,200.00 x 12 / 22 workdays = $2,836.36
Proration breakdown
Results update as valid inputs change.
Full-period pay
$5,200.00
Annual salary ÷ 12 periods.
Eligible workdays
12 of 22
Numerator ÷ denominator. Daily rate $236.3636.
Excluded workdays
10
$2,363.64 not paid for this period.
By calendar days instead
$2,683.87
16 of 31 calendar days, for comparison.
| Item | Amount |
|---|---|
| Full-period pay$62,400.00 annual salary / 12 periods | $5,200.00 |
| Excluded pay10 workdays outside the paid dates | $2,363.64 |
| Prorated gross pay$5,200.00 x 12 / 22 workdays = $2,836.36 | $2,836.36 |
Workdays: Mon, Tue, Wed, Thu, Fri. Full-period pay is rounded to the cent first, then the prorated amount is rounded once.
Estimate only. Results are gross pay before taxes and deductions. Employment contracts, payroll policies, jurisdictional rules, paid holidays, and rounding methods can produce a different amount. This tool does not provide legal or tax advice; confirm with your payroll provider or a qualified advisor.
How the prorated salary formula works
Prorated pay = full-period pay × eligible days ÷ total days in the period
Full-period pay is the annual salary divided by pay periods per year, or the monthly salary for monthly pay. Eligible days are the paid dates for a mid-cycle start or departure, or the period minus unpaid leave.
Workday proration
The denominator is the number of scheduled workdays in the period, such as 22 weekdays in March 2026. Weekend days never add or remove pay, so a leave that spans a weekend only reduces pay for the weekdays it covers. The daily rate changes from month to month with the number of workdays.
Calendar-day proration
The denominator is every day in the period, such as 31 for March or 29 for February 2024. Weekends count as paid days for anyone employed on them. Because months vary from 28 to 31 days, a day in February is worth more than a day in March.
How to use the prorated pay calculator
1. Enter the salary
Choose annual or monthly salary, enter the amount, and pick the pay frequency so the tool can find the full pay for one period.
2. Set the pay period dates
Enter the first and last day of the pay period that needs prorating. The dates must match the selected pay frequency.
3. Add the paid or unpaid dates
Choose a partial employment range for a mid-cycle start or departure, or an unpaid leave range to exclude from the period.
4. Pick workdays or calendar days
Prorate by scheduled workdays or by every calendar day, then review the formula, copy the summary, or download a CSV.
Worked partial month salary example
An employee on a $62,400 annual salary, paid monthly, starts on Monday, March 16, 2026. Full monthly pay is $62,400 ÷ 12 = $5,200.00.
By workdays
March 2026 has 22 weekdays, and 12 of them fall from March 16 to 31. $5,200.00 × 12 ÷ 22 = $2,836.36.
By calendar days
March has 31 days, and 16 of them fall from March 16 to 31. $5,200.00 × 16 ÷ 31 = $2,683.87.
Frequently asked questions
How do you calculate a prorated salary?
Divide the full pay for the period by the number of days in that period, then multiply by the days the employee is eligible to be paid. For example, $5,200 for a month with 22 workdays, with 12 eligible workdays, is $5,200 x 12 / 22 = $2,836.36.
Should I prorate by workdays or calendar days?
Use whichever method the employment contract or payroll policy specifies. Workday proration counts only scheduled working days, so months with more workdays pay less per day. Calendar-day proration counts every day, including weekends, so each day in a 31-day month is worth less than one in February.
How is salary prorated for unpaid leave?
Count the unpaid leave days that fall inside the pay period, subtract them from the total days in the period, and pay the remaining eligible days at the period's daily rate. With workday proration, leave days that land on weekends do not reduce pay.
Does this prorated pay calculator include holidays and taxes?
No. It treats paid holidays as ordinary scheduled days and shows gross pay before taxes and deductions. Contracts, payroll policies, local law, and rounding rules can change the final amount, so confirm with your payroll provider.
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