Biweekly vs Semimonthly Pay
Quick Answer
Biweekly pay means you get paid every two weeks (26 paychecks per year), while semimonthly pay means you get paid twice per month on set dates (24 paychecks per year). Your annual salary is the same either way, but the per-paycheck amount differs. Biweekly paychecks are slightly smaller because the same salary is spread across more pay periods, but you get two "extra" paychecks per year compared to semimonthly.
The Key Differences
| Feature | Biweekly | Semimonthly |
|---|---|---|
| Pay frequency | Every 2 weeks | Twice per month |
| Paychecks per year | 26 | 24 |
| Common pay days | Every other Friday | 1st and 15th (or 15th and last day) |
| Three-paycheck months | 2 per year | Never |
| Best for | Hourly employees | Salaried employees |
Real Example With Actual Numbers
Tom earns $78,000 per year in Florida. Here is how his gross paycheck changes by schedule:
Biweekly: $78,000 / 26 = $3,000.00 per paycheck
Semimonthly: $78,000 / 24 = $3,250.00 per paycheck
After taxes and deductions (single, standard deduction, no 401(k)), his approximate net pay per paycheck:
| Biweekly | Semimonthly | |
|---|---|---|
| Gross | $3,000.00 | $3,250.00 |
| Federal tax | -$336 | -$365 |
| Social Security | -$186 | -$201.50 |
| Medicare | -$43.50 | -$47.13 |
| Net pay | $2,434.50 | $2,636.37 |
Tom takes home less per check with biweekly, but receives two extra checks per year. The annual total is identical. Run your numbers at the SalaryHog calculator.
How Three-Paycheck Months Work
With biweekly pay, most months you receive two paychecks. But because 26 paychecks do not divide evenly into 12 months, two months each year have three pay dates. Many people use these "bonus" paychecks for:
- Extra 401(k) contributions
- Paying down debt
- Building an emergency fund
- Saving for large purchases
If you budget based on two paychecks per month, the third paycheck feels like extra money — even though it is just your normal salary distributed differently.
Impact on Deductions and Taxes
Your annual tax liability is the same regardless of pay schedule. However, per-paycheck withholding amounts differ:
- Federal income tax: Divided across 26 (biweekly) or 24 (semimonthly) periods
- Social Security: 6.2% of each paycheck either way
- Medicare: 1.45% of each paycheck either way
- 401(k) contributions: Your percentage stays the same, but the dollar amount per check changes
If you set your 401(k) to 10%, the per-check contribution is $300 (biweekly) or $325 (semimonthly), but both total $7,800 for the year.
Which Schedule Is More Common?
According to the Bureau of Labor Statistics, about 43% of U.S. workers are paid biweekly, making it the most common schedule. Semimonthly is used by about 19% of employers. Weekly pay (common in construction and retail) and monthly pay (common in some professional settings) make up the rest.
Budgeting Tips by Pay Schedule
If you are paid biweekly:
- Budget based on two paychecks per month
- Use the two three-paycheck months for savings goals
- Set up automatic transfers to savings on paydays
If you are paid semimonthly:
- Your paycheck always comes on the same dates, making rent affordability planning easier
- Bills due on the 1st align perfectly with a 15th-and-last schedule
To see your paycheck breakdown for either schedule, use the SalaryHog calculator and select your pay frequency.