Biweekly and semimonthly pay sound almost identical and are frequently mixed up — but they’re not the same number of paychecks a year, and confusing them over- or understates annual pay.
How it works
The paycheck amount is multiplied by however many pay periods that frequency actually has in a year, giving an annual total. Every other frequency is then derived from that same annual figure, so all five stay consistent with each other.
Why biweekly isn’t 24 paychecks
Biweekly means every two weeks — 52 weeks ÷ 2 = 26 paychecks a year, not 24. Semimonthly means twice a month — 12 months × 2 = 24 paychecks a year exactly. The two arrive at almost the same monthly rhythm but produce a meaningfully different annual total from an identical paycheck amount.
How to use this calculator
- Enter the paycheck amount.
- Choose how often it’s actually paid.
Frequently asked questions
Why does biweekly pay sometimes produce a “three-paycheck month”?
Because 26 paychecks a year don’t divide evenly into 12 months — most months get two paychecks, but two months a year get a third, which biweekly employees often plan around.
Is one pay frequency generally better than another?
Not inherently — the annual total is the annual total regardless of frequency; the difference is mainly cash-flow timing and budgeting rhythm.
Does this calculator account for unpaid time off?
No — it assumes every pay period is worked and paid in full; unpaid leave would reduce the actual annual total below what’s shown here.
