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Overtime and Double Time Calculator

Set your own overtime and double-time multipliers and see the gross pay, premium pay and take-home total.

How it is calculated

You enter the hours already split into three groups: regular, overtime and double time. The tool does not decide which hours count as overtime; your local rules or contract do that. The shift differential is added to the hourly rate first: base = rate + differential, so it is also multiplied by the overtime and double-time factors. Then gross = regular × base + OT × base × OT multiplier + DT × base × DT multiplier. Net pay is gross × (1 − tax % ÷ 100), a flat withholding that is not a real tax calculation. Premium pay is the extra above straight time on the OT and DT hours, and the effective rate is gross ÷ total hours. Multipliers must be at least 1, tax below 100%, and total hours above 0.

Worked example

Someone earns 22 per hour plus a 1.5 shift differential, so the base is 23.50. They work 40 regular hours, 8 overtime hours at 1.5 and 4 double-time hours at 2. Regular pay = 40 × 23.50 = $940.00. Overtime = 8 × 23.50 × 1.5 = $282.00. Double time = 4 × 23.50 × 2 = $188.00. Gross pay = $1,410.00. With 18% withholding, net pay is 1410 × 0.82 = $1,156.20. Premium pay is $188.00, and the effective rate is 1410 ÷ 52 hours = $27.12 per hour.

Try this example →

Common mistakes

  • Entering all 52 hours as regular hours and also listing the overtime hours: hours are not split automatically, so they get counted twice.
  • Typing the multiplier as a percentage (150) instead of a factor (1.5); the pay is then 100 times too high.
  • Entering the multiplier as the extra only (0.5): the tool needs the full factor, 1.5, and rejects anything below 1.
  • Expecting the shift differential to be added after the multiplier: it is added to the base rate first, so overtime hours also earn the differential at 1.5 times.
  • Treating net pay as an exact take-home figure: it applies one flat percentage and ignores brackets, social contributions and other deductions.

About this calculator

Under standard US wage practice, overtime pay is typically calculated at 1.5 times an employee’s regular hourly rate for hours worked beyond 40 in a week, per the Fair Labor Standards Act, while double time — usually 2 times the regular rate — kicks in under more specific conditions, such as California’s rule for hours beyond 12 in a single day, or work on designated holidays. Employers can also set their own, more generous multipliers as part of a labor agreement or company policy.

On top of those multipliers, a shift differential (extra pay for less desirable night, weekend or holiday shifts) adds another layer before the paycheck is finalized, and withholding for taxes then separates gross pay from actual take-home pay.

This calculator lets you set your own overtime and double-time multipliers, add a shift differential and withholding rate, and returns your gross pay, premium pay earned and net take-home total.

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