A pay period is the recurring span of days for which an employee's wages are calculated and paid, such as one week or two weeks. The four common US pay periods are weekly (52 a year), biweekly (26), semi-monthly (24), and monthly (12).
Key takeaways
- Biweekly is the most common schedule, used by 43% of private US establishments.
- The pay period is the work span; the pay date is when wages are paid. They're different dates.
- State laws set minimum pay frequencies, and some require weekly pay for certain workers.
- Overtime is calculated per workweek, not per pay period.
How pay period works
Each pay period has a start date, an end date, and a pay date. A biweekly period might run Sunday through the second Saturday, with the pay date the following Friday. The gap between the period end and the pay date gives payroll time to collect timesheets, approve changes, and process deposits.
The BLS last surveyed pay frequency in early 2023. It found 43.0% of private establishments paid biweekly, 27.0% weekly, 19.8% semi-monthly, and 10.3% monthly (BLS, length of pay period survey). Industries with hourly staff, such as construction and retail, lean toward weekly. Professional and finance firms lean toward semi-monthly.
State law limits your options. Many states require at least semi-monthly pay for most employees, and some, including New York for manual workers, require weekly pay. Our state labor law library covers frequency rules alongside final paycheck deadlines.
Pay period example
Here is how a $78,000 salary looks under each schedule:
| Schedule | Pay periods per year | Gross per period |
|---|---|---|
| Weekly | 52 | $1,500.00 |
| Biweekly | 26 | $3,000.00 |
| Semi-monthly | 24 | $3,250.00 |
| Monthly | 12 | $6,500.00 |
Biweekly payrolls occasionally produce 27 pay dates in a calendar year, depending on where the first payday falls. If you divide salary by 26 in those years, salaried employees are overpaid by one period; budget for it or divide by 27. See the biweekly pay entry for details.
Why pay period matters for employers
Your pay schedule affects cash flow, payroll workload, and how employees budget. Weekly pay costs more to process but is popular with hourly workers. Semi-monthly lines up with monthly bills and accounting periods but makes overtime harder, since pay periods don't match workweeks.
Changing a pay schedule is possible but takes planning. Several states require advance written notice, and employees need time to adjust automatic payments. Our pay schedule change email gives you a template for that announcement.
Common pay period mistakes to avoid
Calculating overtime by pay period
FLSA overtime is per 7-day workweek. A semi-monthly period can't be used to average hours.
Picking monthly pay for hourly staff
Many states don't allow monthly pay for non-exempt employees.
Forgetting the 27th payday
Biweekly schedules hit 27 pay dates every 11 years or so, which breaks salary budgets.
Changing schedules without notice
Some states require written notice before changing paydays.
Pay period: questions people also ask
What is the most common pay period?
What is the difference between a pay period and a pay date?
How many pay periods are in a year?
Can an employer choose any pay period?
Does the pay period affect taxes?
Tools, templates, and guides for this topic
Where to go from here
See what helps
Get matched options
Three platforms for your size and states, with pricing ranges.
Start AI MatchGet free quotesHow we wrote this definition
HRTally glossary entries are written by people who have run US payroll, benefits, and HR operations, then checked line by line against primary sources such as the IRS, Department of Labor, EEOC, and Bureau of Labor Statistics. Dollar limits and rates are for 2026 unless stated. We review every entry at least twice a year and whenever a rule changes. This page explains general rules and isn't legal or tax advice; state law can differ. Read our editorial standards.
Sources
Cite this definition
Teachers, consultants, and HR communities are welcome to quote this definition with a link back to HRTally.
<blockquote>A pay period is the recurring span of days for which an employee's wages are calculated and paid, such as one week or two weeks. The four common US pay periods are weekly (52 a year), biweekly (26), semi-monthly (24), and monthly (12).</blockquote><p>Source: <a href="https://www.hrtally.com/hr-glossary/pay-period/">HRTally HR Glossary, Pay period</a></p>
Written by the HRTally Research Team
Our guides are written and reviewed by people with hands-on US HR, payroll, and HR technology experience. Legal and tax facts are checked against primary sources, such as the Department of Labor, IRS, EEOC, and USCIS, and linked at the end of each guide. Vendors never review or pay for our editorial content.