Overtime Calculator – Free OT Pay Calculator Online
Calculate your overtime pay instantly. Enter your hourly rate, hours worked, and tax rate to see gross and net amounts in real-time.
What Is Overtime Pay?
Overtime pay is additional compensation for hours worked beyond the standard 40-hour workweek. Under the Fair Labor Standards Act (FLSA), non-exempt employees must receive at least 1.5 times their regular hourly rate for overtime hours. Some states like California require daily overtime (over 8 hours per day) and double time (over 12 hours per day or 7th consecutive workday). This calculator helps you estimate both gross overtime earnings and take-home pay after federal and state tax withholdings.
Overtime Pay Formula
Regular Pay = Hourly Rate × Regular Hours (max 40)
Overtime Pay = Hourly Rate × 1.5 × OT Hours
Double Time Pay = Hourly Rate × 2 × DT Hours
Gross Pay = Regular + Overtime + Double Time
Net Pay = Gross Pay × (1 - Tax Rate)
The 1.5x multiplier is the federal minimum under FLSA. Some employers offer higher rates. Double time (2x) is not required by federal law but is mandatory in California for hours over 12 per day.
Calculation Examples
Real scenarios showing how overtime pay adds up. All examples assume a 22% combined tax rate.
| Scenario | Regular | Overtime | Gross | Net |
|---|---|---|---|---|
| $20/hr, 10 OT hours | $800 | $300 | $1,100 | $858 (22% tax) |
| $30/hr, 5 OT + 3 DT hours | $1,200 | $225 | $1,605 | $1,252 (22% tax) |
| $15/hr, 20 OT hours | $600 | $450 | $1,050 | $819 (22% tax) |
Common Overtime Calculation Mistakes
Forgetting to include all hours over 40
Some workers only count hours beyond their scheduled shift, missing overtime from extra days worked. Under FLSA, all hours over 40 in a workweek qualify for overtime, regardless of your normal schedule.
Using the wrong base rate
Overtime must be calculated on your regular rate of pay, which includes shift differentials, non-discretionary bonuses, and commissions. Using only your base hourly rate may underestimate your overtime pay.
Confusing gross and net pay
Overtime is taxed as regular income, not at a higher rate. However, a large overtime check may be withheld at a higher rate because payroll systems assume you earn that amount every pay period. The difference is refunded when you file taxes.
Ignoring state-specific rules
California, Alaska, Nevada, and Colorado have daily overtime rules that federal law does not require. If you work in these states, you may be entitled to overtime for hours over 8 in a single day, even if your weekly total is under 40.
How to Use
Enter your hourly rate
Input your base hourly wage. If you are salaried, divide your weekly salary by 40 to get the hourly equivalent. Include shift differentials if applicable.
Enter your hours
Input regular hours (up to 40), overtime hours at 1.5x rate, and double time hours at 2x rate if applicable. The calculator caps regular hours at 40 automatically.
Set your tax rate
Enter your estimated combined federal and state tax rate. The default 22% covers the federal bracket for most overtime earners. Adjust based on your actual withholding.
Review your results
See your gross pay (before taxes) and net pay (after taxes) instantly. The breakdown shows regular pay, overtime pay, and tax deductions separately.
Frequently Asked Questions
Under the Fair Labor Standards Act, overtime is paid at 1.5 times your regular hourly rate for all hours worked over 40 in a workweek. The workweek is a fixed 168-hour period (7 consecutive days) defined by your employer. Hours cannot be averaged across multiple weeks unless you work under a specific exemption like the 8/80 rule for healthcare workers.
No. Overtime is taxed as regular income at the same federal and state rates as your base wages. The confusion arises because payroll systems often withhold taxes at a higher rate on large paychecks, assuming you earn that amount every pay period. Any over-withholding is refunded when you file your annual tax return.
Non-exempt employees under FLSA are entitled to overtime. This includes most hourly workers and some salaried employees earning below the DOL salary threshold ($684 per week as of 2024). Exempt employees—typically salaried managers, professionals, and administrative staff meeting specific duties tests—do not qualify for overtime under federal law.
Double time (2x your regular rate) is not required by federal law but is mandatory in California for hours worked over 12 in a single day, or for all hours worked on the 7th consecutive day in a workweek. Some union contracts and employer policies also provide double time for holidays or specific shifts.
This calculator handles federal FLSA rules and basic double time. For full California compliance—including daily overtime (over 8 hours), double time thresholds (over 12 hours), and 7th consecutive day rules—use our dedicated California Overtime Calculator which automatically applies California Labor Code Section 510.