Biweekly vs Semimonthly Pay

Biweekly and semi-monthly sound similar but work differently — and the difference matters for overtime.

The difference

Biweekly = every two weeks, on the same weekday — 26 paychecks a year. Semi-monthly = twice a month (e.g., the 15th and last day) — 24 paychecks a year, but pay dates land on different weekdays and periods vary in length.

Impact on overtime

Overtime is always calculated by the workweek, not the pay period. Biweekly periods contain exactly two workweeks, which keeps OT math clean. Semi-monthly periods can split a workweek across two paychecks — so you must still total each workweek separately to pay overtime correctly.

Which to choose

Biweekly is simpler for hourly teams and overtime. Semi-monthly aligns neatly with monthly accounting and salaried staff. Check your state's pay-frequency rules before deciding.

How to do payroll

FAQ

Is biweekly the same as semimonthly?

No — biweekly is 26 pay periods a year; semi-monthly is 24. Biweekly keeps overtime math simpler.

How many paychecks in biweekly?

26 per year (occasionally 27, depending on the calendar).

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