Work, pay & shifts
Weekly vs Biweekly vs Semi-Monthly vs Monthly Pay
The four common pay frequencies differ in more than how often money arrives. They split the year into different numbers of periods, of fixed or varying length, with paydays that either stay on one weekday or move around the calendar. This comparison puts those differences side by side, for anyone choosing a schedule or making sense of the one they have.
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At a glance
| Frequency | Periods a year | Period length | Average hours a period at 40 a week | Payday weekday |
|---|---|---|---|---|
| Weekly | 52 (53 in some years) | 7 days | 40 | Fixed |
| Biweekly | 26 (27 in some years) | 14 days | 80 | Fixed |
| Semi-monthly | 24 | 13–16 days | 86.67 | Changes |
| Monthly | 12 | 28–31 days | 173.33 | Changes |
Fixed-length periods: weekly and biweekly
Weekly and biweekly periods are always the same length and contain the same weekdays, so an hourly worker on a steady schedule gets the same hours on every check. The trade-off is that they don’t line up with months: monthly bills meet two or three biweekly checks, and some years have an extra payday.
Calendar periods: semi-monthly and monthly
Semi-monthly and monthly periods follow the calendar, which suits monthly budgets and salaried payroll — every check is the same fraction of the year. The periods change length, though, so hours per period vary, and paydays fall on different weekdays, weekends included.
Choosing or comparing
- Comparing job offers: divide an annual salary by the periods in a year — a biweekly check is 1/26 of the year, not half of a monthly check.
- Budgeting: with biweekly pay, budget on two checks a month and treat three-check months separately.
- Hourly timesheets: weekly and biweekly periods give consistent hours; semi-monthly and monthly periods don’t.
- Payroll workload: more periods mean more payroll runs — 52 a year weekly against 12 monthly.
Pay Frequencies Compared FAQ
- Which pay frequency is most common?
- In the US, biweekly is the most common, according to Bureau of Labor Statistics surveys; weekly, semi-monthly, and monthly are all widely used.
- Is a biweekly paycheck half of a monthly one?
- No. Each biweekly check is 1/26 of annual pay and a monthly check is 1/12, so on $60,000 that is $2,307.69 against $5,000.00.
- Which frequency has the most paychecks?
- Weekly: 52 a year, and 53 in years when a payday falls on January 1 (or January 1 or 2 in a leap year).
- Do hours per period change with semi-monthly pay?
- Yes — a period holds 9 to 12 weekdays — which is why semi-monthly checks for hourly work vary.
- Can one employer use different frequencies?
- Yes. Paying hourly staff weekly or biweekly and salaried staff semi-monthly or monthly is common, subject to local rules.
Related guides
- Pay Period CalendarSet up a payroll calendar: choose the frequency, anchor the first period, set the pay date and deadlines, and check year-end and holiday dates.
- Period End vs Pay DateWhy paychecks arrive after the work they cover: the gap between a pay period’s end and its pay date, paying in arrears, and year-end effects.
Open the tool
Jump into Pay Period Date Generator when you are ready to process your files.
