Biweekly vs semi-monthly pay
Biweekly means every two weeks. Semi-monthly means twice a month. The difference is in the counting: how many paychecks, how long each period is and how much each one is.
Example for 2027: biweekly paydays starting 2027-01-08 fall 26 times; starting 2027-01-01 they fall 27 times. Semi-monthly is always 24. On a $52,000.00 salary that is about $2,000.00 per biweekly paycheck (26 paychecks) against $2,166.67 per semi-monthly paycheck, before taxes.
Estimate based on what you entered. Not legal or payroll advice; check it against your employer's records.
How to use it
- Check your pay stub or ask payroll how often you are paid.
- Count the paychecks: biweekly is every 14 days, semi-monthly is twice a month.
- Divide any yearly figure by the number of paychecks to see the amount per paycheck.
- Use a time card for the matching period so you can add up your hours.
Side by side
| Question | Biweekly | Semi-monthly |
|---|---|---|
| How it repeats | Every 14 days | Twice a month, on set dates |
| Paychecks in a year | 26 or 27 (in 2027: 26 or 27) | 24 |
| Days in each period | 14 | 13 to 16 |
| Whole weeks in a period | Always 2 | Not whole weeks |
| Months with three paydays | Sometimes | Never |
Why biweekly has 26 or 27 paychecks
A year has 365 days, or 366 in a leap year. Divide by 14 and you get a little over 26. That leftover is why the first payday of the year decides whether a calendar year has 26 or 27 paydays. Semi-monthly pays on two set dates every month, so it is 24 in every year.
What it means for adding up hours
A biweekly period is always two full weeks, so hours line up with calendar weeks. In HoursPad, a semi-monthly period runs from the 1st to the 15th or the 16th to the end of the month (your employer's dates may differ), so a period can start or stop in the middle of a week. If you add up hours for a pay period, use the matching card: the biweekly time card calculator or the semi-monthly timesheet calculator. Overtime is its own count: read how overtime works.
HoursPad does not state any pay-frequency rules. Your employer or your state labor department can confirm what applies to your job.
Calendars and tools
See the paydays for a year in the biweekly pay calendar 2027 or the semi-monthly pay calendar 2027. Count paychecks with how many pay periods in 2027 and find the extra checks with 3-paycheck months 2027. For the basics, read what is a pay period.
Questions
How many paychecks a year is biweekly?
Biweekly means every 14 days. That is 26 paychecks in most years and 27 in some years, depending on which day the first payday falls on. For 2027, a first payday of 2027-01-08 gives 26 paydays and a first payday of 2027-01-01 gives 27.
How many paychecks a year is semi-monthly?
Semi-monthly means twice a month, on fixed dates, so 24 paychecks a year.
Which one gives a bigger paycheck?
This is arithmetic only. If you split the same yearly figure into fewer paychecks, each one is larger, so a semi-monthly paycheck comes out larger than a biweekly one. The yearly total is the same either way. HoursPad does not say how your employer sets pay.
Why does a biweekly schedule sometimes have a third paycheck in a month?
Months are 28 to 31 days long and biweekly paydays are 14 days apart, so in some months three paydays fit. The 3-paycheck months page shows which months for a payday you pick.