Semimonthly Overtime Calculator
Standard Formula
Semimonthly pay periods (24 paychecks/yr) allocate whole workweeks into appropriate cutoffs.
Semimonthly pay cycles occur 24 times per year (typically 1st-15th and 16th-end of month).
How Semimonthly Overtime Calculator Works?
The Semimonthly Overtime Calculator works by adding the fixed base pay for a semimonthly period to the 1.5× pay for overtime hours approved in that period.
1Enter the hourly rate
Type the base wage used for overtime, $26.00 by default.
2Enter base pay for the period
Type the standard semimonthly pay. $26.00 × 2,080 hours ÷ 24 periods = $2,253.33.
3Enter overtime hours
Add the overtime hours from workweeks that close inside this pay period.
4Read semimonthly gross
12 overtime hours × $39.00 adds $468.00, for $2,721.33 gross and $65,311.92 projected per year.
Semimonthly Overtime Calculator Formula
The Semimonthly Overtime Calculator formula is Semimonthly Gross = Period Base Pay + (OT Hours × Rate × 1.5).
Period base pay
Base Pay = Rate × 2,080 ÷ 24
Overtime pay
OT Pay = OT Hours × Rate × 1.5
Annual projection
Annual = (Base Pay + OT Pay) × 24
- 24
- Semimonthly pay periods per year, usually the 1st–15th and 16th–end of month.
- OT Hours
- Overtime hours computed per workweek and assigned to the period.
- Base Pay
- Fixed straight pay per period, 86.67 hours on a 40-hour schedule.
Worked example: $22 per hour, 6 overtime hours
Base Pay = $22.00 × 2,080 ÷ 24 = $1,906.67.
OT Pay = 6 × $33.00 = $198.00. Gross = $2,104.67.
Semimonthly Overtime Calculator Conversion Table
The Semimonthly Overtime Calculator conversion table lists semimonthly base pay and gross pay with 0, 8 and 16 overtime hours for 7 hourly rates.
| Hourly Rate | Semimonthly Base (86.67h) | Gross + 8 OT hrs | Gross + 16 OT hrs | Annual Base (24 checks) |
|---|---|---|---|---|
| $15.00 | $1,300.00 | $1,480.00 | $1,660.00 | $31,200.00 |
| $18.00 | $1,560.00 | $1,776.00 | $1,992.00 | $37,440.00 |
| $20.00 | $1,733.33 | $1,973.33 | $2,213.33 | $41,600.00 |
| $22.00 | $1,906.67 | $2,170.67 | $2,434.67 | $45,760.00 |
| $26.00 | $2,253.33 | $2,565.33 | $2,877.33 | $54,080.00 |
| $30.00 | $2,600.00 | $2,960.00 | $3,320.00 | $62,400.00 |
| $40.00 | $3,466.67 | $3,946.67 | $4,426.67 | $83,200.00 |
What is Semimonthly Overtime Calculator?
A Semimonthly Overtime Calculator is a payroll tool that adds workweek-based overtime to a twice-a-month paycheck.
Semimonthly periods hold 15 or 16 days, so they never line up with 7-day workweeks. Overtime is still measured per workweek. A workweek that crosses a pay date has its overtime paid on the check for the period in which the workweek ends, or on the next regular payday.
Semimonthly pay (24 checks) differs from biweekly pay (26 checks). A $2,000.00 semimonthly check equals $48,000.00 per year; a $2,000.00 biweekly check equals $52,000.00.
What are the uses of Semimonthly Overtime Calculator?
There are 4 main uses of the Semimonthly Overtime Calculator.
Salaried non-exempt checks
Office staff paid on the 15th and last day confirm overtime added to base pay.
Pay frequency comparison
Workers compare semimonthly and biweekly offers on an annual basis.
Cutoff planning
Payroll teams decide which workweek overtime lands in which period.
Budgeting
Employees plan around 2 paychecks per month with variable overtime.