How many pay periods are there in a year?

Weekly is 52, every two weeks is 26, twice a month is 24 and monthly is 12. Biweekly and weekly schedules occasionally produce one extra payday in a calendar year, because 52 weeks is slightly shorter than a year.

What is the difference between biweekly and semimonthly?

Biweekly is every fourteen days, so it always falls on the same weekday and gives 26 or 27 pay dates. Semimonthly is twice a calendar month, usually the 15th and the last day, giving exactly 24. Semimonthly pay dates land on different weekdays and the periods are unequal in length.

What happens when payday falls on a weekend or holiday?

Almost all employers pay on the previous business day, because paying late risks breaching state pay-frequency laws while paying early does not. This generator moves those dates back and flags each one with the reason.

Why do some years have 27 biweekly pay periods?

Twenty-six fourteen-day periods is 364 days, one day short of a year. That day accumulates, and roughly every eleven years it produces a 27th payday. Salaried payroll has to decide whether to reduce each cheque or absorb the extra period.

Payroll Calendar Generator

Which schedule is which

Weekly — 52 a year. Same weekday every time. Common in construction, hospitality and agency work.
Every two weeks — 26 a year. Also a fixed weekday. The most common private-sector schedule in the US, and the one that occasionally produces 27 paydays.
Twice a month — 24 a year. Usually the 15th and the last day. Lands on a different weekday each time, and the two halves of a month are not equal in length.
Monthly — 12 a year. Usual for salaried staff outside the US and for executive payroll within it.

Biweekly and semimonthly are not the same thing, and confusing them is the most common payroll planning error. Twenty-six periods of fourteen days is 364 days. Twenty-four periods across twelve months is 365 or 366. Over a year that is two extra cheques of a smaller amount, different overtime boundaries, and different cash-flow dates.

The 27th payday

Because 26 fortnights is a day short of a year, the shortfall accumulates. Roughly every eleventh year a biweekly schedule produces a 27th payday. For hourly staff this is simply another period worked. For salaried staff it forces a decision: reduce every cheque slightly across the year, or absorb an extra period's cost. Employers that notice it in December rather than the previous January tend to have an unpleasant conversation.

Weekends and holidays

When a scheduled payday lands on a Saturday, Sunday or federal holiday, almost every employer pays on the previous business day. The reason is asymmetric risk: many states set a maximum interval between paydays, so paying late can breach the law, while paying early never does.

This generator applies that rule, moves the date back to the previous working day, and says which holiday or weekend caused it. Federal holidays are computed rather than typed in, including the observance rule — a holiday on a Saturday is observed the Friday before and one on a Sunday the Monday after. Independence Day 2026 falls on a Saturday, so it is observed on Friday 3 July.

What this does not do

It does not know your state's pay-frequency law. Some states require at least semimonthly pay, and some set rules by industry or job type. Check before committing to a monthly schedule.
It does not include state or local holidays, only the eleven federal ones. Your organisation's closures are probably a longer list.
It does not calculate pay. This is dates only — for hours and overtime use the timesheet calculator.

Common questions

How many pay periods are in a year?

52 weekly, 26 biweekly, 24 semimonthly, 12 monthly. Weekly and biweekly schedules occasionally gain an extra one depending on where the year's days fall.

What happens if payday falls on a holiday?

Payment moves to the previous business day. This is convention rather than federal law, but it is close to universal, and state pay-interval rules make the alternative risky.

Can I put these dates in my calendar?

Yes — the download button produces a standard .ics file with one all-day event per payday, including the period each covers. It imports into Google Calendar, Outlook and Apple Calendar. The file is generated in your browser and not sent anywhere.

References

US Department of Labor — state payday requirements.
OPM — federal holidays, including the weekend observance rule.