Semi-Monthly Pay Calculator
Enter your salary or wage in any format, hourly, daily, weekly, monthly, or annual, and this calculator instantly shows your gross semi-monthly paycheck (one of 24 payments per year). You also get a full pay-frequency comparison table, a live 2025 pay date schedule, and a step-by-step breakdown of how each figure is derived.
Formula
Worked example
An employee earning $60,000 per year receives $60,000 / 24 = $2,500.00 per semi-monthly paycheck. The equivalent biweekly check would be $60,000 / 26 = $2,307.69, which is smaller per check but comes 26 times a year instead of 24.
What is semi-monthly pay?
Semi-monthly pay means you receive a paycheck exactly twice per calendar month, giving you 24 paychecks a year. The most common schedule is the 1st and 15th of each month, or the 15th and last day of each month. Because the calendar has months of different lengths, the number of working days covered by each period varies slightly, but the gross paycheck amount stays the same every period (your annual salary divided by 24). About 19.8% of U.S. private employers use a semi-monthly schedule, making it the second most common pay frequency after biweekly.
Semi-monthly vs. biweekly: what is the difference?
This is one of the most common points of confusion in payroll. Semi-monthly means twice per month (24 checks per year). Biweekly means every two weeks (26 checks per year). Because there are 52 weeks in a year, a biweekly schedule produces two extra paychecks compared to semi-monthly. Two months each year will have three biweekly paydays instead of the usual two. The individual checks are smaller on a biweekly schedule ($60,000 / 26 = $2,307.69 vs. $60,000 / 24 = $2,500.00), but the annual gross is the same. Semi-monthly paychecks fall on fixed calendar dates, making them easier to budget around for both employers and employees.
How to convert any wage to semi-monthly pay
The core rule is to first find the annual gross, then divide by 24. From an annual salary: divide by 24 directly. From a monthly salary: multiply by 12 to get the annual figure, then divide by 24 (equivalently, just divide the monthly figure by 2). From a weekly salary: multiply by 52 to get annual, then divide by 24. From a daily rate: multiply by the number of days you work per week and by 52, then divide by 24. From an hourly rate: multiply by your hours per week and by 52, then divide by 24. All conversions assume you work every week of the year without unpaid leave. For a part-year calculation, substitute the actual number of weeks or days worked.
Gross pay vs. take-home pay
The figure this calculator produces is your gross semi-monthly pay - the amount before any deductions. Your actual take-home pay (net pay) will be lower after your employer withholds federal and state income tax, FICA taxes (Social Security at 6.2% and Medicare at 1.45% of gross, up to the annual wage base), and any voluntary pre-tax deductions such as health insurance premiums or retirement contributions (401k, 403b). Pre-tax deductions reduce the income on which tax is calculated, so they lower your tax bill as well as your gross. To estimate your net paycheck, use your gross semi-monthly figure as the starting point in a full paycheck calculator that accepts your filing status and withholding elections.
Pay frequency comparison: 24 vs. 26 pay periods
| Frequency | Periods / year | Gross per check | Extra months with 3 checks |
|---|---|---|---|
| Weekly | 52 | $1,153.85 | None |
| Biweekly | 26 | $2,307.69 | 2 (3-paycheck months) |
| Semi-monthly | 24 | $2,500.00 | None - fixed dates |
| Monthly | 12 | $5,000.00 | None |
For a $60,000 annual salary, showing how each frequency divides the same annual gross.
Frequently asked questions
How many semi-monthly pay periods are there in a year?
There are exactly 24 semi-monthly pay periods in a year, two per calendar month times 12 months. This is unlike biweekly pay (every two weeks), which produces 26 periods per year because 52 weeks / 2 = 26.
What are typical semi-monthly pay dates?
The two most common schedules are the 1st and 15th of each month, or the 15th and last calendar day of each month. Some employers use the 10th and 25th, or other fixed-date pairs. The key feature is that the dates are fixed on the calendar, unlike biweekly pay whose day of the week is fixed but whose calendar date shifts each pay period.
Is semi-monthly the same as twice a month?
Yes. Semi-monthly literally means "half a month," so semi-monthly pay is pay that occurs twice in each calendar month, 24 times per year. The prefix "bi-" in bimonthly is ambiguous (it can mean twice a month or every two months), but "semi-monthly" is unambiguous: always twice per month.
Why is my semi-monthly check larger than my biweekly check?
Because there are fewer semi-monthly periods in a year (24) than biweekly periods (26), each semi-monthly paycheck covers more of your annual salary. For a $60,000 salary, semi-monthly gives you $2,500 per check while biweekly gives $2,307.69 per check. The total annual pay is the same either way; the per-check amounts differ.
Does semi-monthly pay affect my tax withholding?
The pay frequency you use does not change how much total tax you owe for the year, but it does affect how much is withheld per paycheck. Your employer applies the IRS Publication 15-T withholding tables for a semi-monthly payroll to calculate each check's withholding. Semi-monthly withholding per check will be slightly higher than biweekly because each period covers more income, but the total annual withholding is the same.
Can hourly workers be paid semi-monthly?
Yes, though it requires a bit more bookkeeping for the employer. Because semi-monthly periods contain different numbers of working days, an hourly worker's gross pay can vary from one check to the next depending on hours actually worked. The conversion this calculator performs assumes a fixed number of hours per week for comparison purposes.