Guide
What Is a Pay Period?
A pay period is the recurring stretch of time that one paycheck covers. If you are paid every other Friday for the two weeks that just ended, that two-week block is your pay period. It is set by your employer and stays the same from one paycheck to the next.
Pay period vs pay date
These are two different things:
- The pay period is the work time being paid for — for example, the 1st through the 15th.
- The pay date (payday) is when the money actually arrives — for example, the 22nd.
The gap between them is the payroll lag: the days payroll needs to collect hours, run the calculation, and send payments. A lag of a few days to a full period is normal. It is also why your first paycheck at a new job can feel delayed and your last one arrives after you have left.
The four common pay periods
| Type | Frequency | Paychecks / year | Typical use |
|---|---|---|---|
| Weekly | Every week | 52 | Construction, trades, hospitality, agriculture |
| Biweekly | Every two weeks | 26 (sometimes 27) | The most common US schedule overall |
| Semimonthly | Twice a month (fixed dates) | 24 | Salaried office roles |
| Monthly | Once a month | 12 | Some executive, academic, and international payrolls |
Biweekly and semimonthly are easy to mix up. Biweekly is every 14 days, so the payday drifts through the month and lands 26 times a year. Semimonthly is on set dates such as the 15th and the last day, exactly 24 times a year. See biweekly vs semimonthly pay for the full comparison.
The workweek is a separate clock
For overtime, US federal law does not use the pay period at all. It uses a fixed, recurring workweek: any 168 consecutive hours (seven 24-hour days) that the employer designates. Overtime is owed for hours over 40 in that workweek, even if the pay period contains two workweeks or splits one down the middle.
Example: you are paid semimonthly, and a workweek runs Sunday to Saturday. The period ending on the 15th (a Wednesday) cuts that week in half. Your employer still has to add up all the hours in the Sunday-to-Saturday week to decide whether any were overtime, then pay the overtime on whichever paycheck covers those days.
Why the pay period matters to you
- Budgeting: a weekly earner and a monthly earner on the same salary manage cash flow very differently.
- Deductions: health premiums and other fixed deductions are an annual figure divided by the number of pay periods, so a semimonthly check has a larger deduction than a biweekly one for the same benefit.
- Starting and leaving a job: the payroll lag means your first check may only cover part of a period, and your final check comes on the next regular payday (or sooner, where state law requires).
- Overtime disputes: if you think overtime is missing, you need to know both your pay period and your employer's designated workweek to check the math.
Salaried pay and the pay period
For a salaried employee, each paycheck is the annual salary divided by the
number of pay periods: salary ÷ 24 semimonthly,
salary ÷ 26 biweekly. The amount is the same every
period regardless of how many working days it contains, which is part of
what "salary basis" means under the
FLSA exemption rules.
Check a specific paycheck
The Paycheck Calculator takes a pay frequency and shows the withholding and net pay for one period. The Time Card Calculator adds up a week or two of shifts, and the Salary to Hourly Calculator converts a salary across every pay frequency.