Payroll frequency: weekly, biweekly, semimonthly and monthly compared

How often you pay people sounds like an administrative footnote, but it touches cost, overtime maths, cash flow and even what’s legal in a given state. Employers often inherit a schedule without thinking about it — and it’s worth thinking about, because the wrong one quietly creates work and confusion. Here’s how the four common schedules actually differ.

The four schedules

• Weekly — 52 paychecks a year. Most common for hourly and trades workforces.
• Biweekly — every two weeks, 26 paychecks. Two months a year contain three paydays, which affects budgeting.
• Semimonthly — twice a month on fixed dates (say the 15th and last day), 24 paychecks.
• Monthly — 12 paychecks. Simplest to administer, hardest on employee cash flow, and restricted in many states.

Note that biweekly and semimonthly are not the same — 26 versus 24 paychecks — and mixing them up in payroll setup is a real source of error.

The overtime complication

This is the trade-off employers most often miss. Overtime is calculated per workweek, so schedules that align to whole weeks — weekly and biweekly — make overtime straightforward. Semimonthly is trickier: because a semimonthly pay period doesn’t line up with the seven-day workweek, you still have to calculate overtime by workweek inside the period, splitting weeks that straddle the pay-date boundary. For an hourly workforce, that friction alone often argues for biweekly.

Cost and cash flow

More frequent pay means more payroll runs — more processing, more deposits, more chances for error. Weekly is the most administrative work; monthly the least. Against that, employees generally prefer more frequent pay, and it eases their cash flow. Biweekly is the common compromise: aligned to the workweek for clean overtime, but only 26 runs rather than 52.

What the law allows

You don’t have a completely free choice. Many states set a minimum pay frequency — some require at least semimonthly, some require weekly or biweekly for certain workers (manual labourers, for example) — and monthly is prohibited or restricted in a number of states. Your employees’ work states govern what’s permissible.