How to use this result
A 36-hour week followed by a 48-hour week contains eight overtime hours at a 40-hour weekly threshold. Averaging the hours into two 42-hour weeks would incorrectly produce only four overtime hours.
The monthly projection assumes this same pair of weeks repeats 26 times a year. This is gross pay with one regular rate and no additional differentials or bonuses.
The formula
Worked example
Using the example inputs loaded above:
$2,816.00
Gross pay over two workweeks.
Common questions
Is biweekly the same as twice a month?
No. Biweekly is every two weeks, commonly 26 pay periods per year. Twice a month is 24 pay periods.
Can I use different rates for the two weeks?
Use the weekly overtime calculator twice if the regular rate changes, then add those results.
Assumptions & references
Amounts use USD. Results are planning estimates using your entries, with dollars rounded only for display. Each tool covers the model described here; it does not determine payroll or tax obligations. Read the calculation methodology.
Formula version 1.0 · Reference check: September 7, 2026 · Report a calculation issue