Semimonthly Pay

A pay schedule where employees are paid twice per month — 24 paychecks per year — typically on fixed dates like the 1st and 15th.

Semimonthly pay means your employer runs payroll exactly twice per calendar month, producing 24 paychecks per year. Common pay dates are the 1st and 15th or the 15th and last day of the month. Because months have different lengths, the number of days covered by each paycheck varies slightly — roughly 15 or 16 days per cycle.

Semimonthly pay is often confused with biweekly pay (every two weeks, 26 paychecks per year), but the difference matters for budgeting and payroll math. With biweekly pay, two months each year include three paychecks instead of two. With semimonthly pay, you always receive exactly two checks per month, making monthly expense budgeting easier but hourly payroll calculations slightly more complex.

For salaried employees, semimonthly gross pay is simply your annual salary divided by 24. For hourly workers, the employer must carefully count the exact hours and days in each 15–16 day window, which shifts slightly based on the calendar. Overtime calculations can get complicated near pay period boundaries — an employee who works 44 hours in a biweekly week clearly earned overtime, but a semimonthly period that spans two partial weeks may require careful analysis of which hours fall in which workweek.

Some states mandate minimum payroll frequency. For example, several states require at least semimonthly pay for most employees. Employers cannot choose a once-monthly pay schedule in those states. Check your state's Department of Labor rules if you're unsure whether your employer's schedule is compliant.

Semimonthly vs. Biweekly: Key Differences

  • Semimonthly: 24 checks per year, always on fixed calendar dates. Monthly salary budgeting is straightforward.
  • Biweekly: 26 checks per year, every 14 days. Two months per year have a third paycheck — helpful for savings windfalls but requires budgeting awareness.
  • Annual salary ÷ 24 (semimonthly) vs. ÷ 26 (biweekly): a $100,000 salary yields $4,166.67/check semimonthly vs. $3,846.15/check biweekly.
  • Health insurance premiums and 401(k) deductions are often calibrated to one schedule — switching employers can change your per-check deduction amounts even if annual totals are the same.

Why Employers Choose Each Schedule

  • Semimonthly aligns payroll with rent/mortgage due dates and monthly bills, simplifying cash flow management for employees.
  • Biweekly is easier for hourly workforce payroll because each pay period covers exactly two full workweeks, making overtime calculations straightforward.
  • Semimonthly is common in white-collar, salaried-heavy industries like finance, law, and healthcare administration.
  • Biweekly is dominant in industries with large hourly workforces: retail, manufacturing, construction, and hospitality.

Example

A marketing manager earning $84,000/year on a semimonthly schedule receives $3,500 gross per paycheck ($84,000 ÷ 24) on the 1st and 15th of each month. Her colleague at a different company earning the same salary on a biweekly schedule receives $3,230.77 per check but gets three paychecks in two months of the year. Over the full year both receive the same $84,000 gross — but the biweekly employee needs to budget carefully so she doesn't overspend the two months with only two checks expecting a consistent three.