Overtime Calculator for California
This California overtime calculator mirrors what a CA paycheck does with overtime: gross at 1.5× your regular rate, federal withholding at the 22% supplemental rate with the 2026 half-time premium deduction applied, 7.65% FICA, and California state tax. California also has daily overtime: 1.5× past 8 hours/day and 2× past 12, plus seventh-consecutive-day rules — so your OT hours may qualify even under 40/week.
Quick answer: In California, overtime is reduced by federal withholding, FICA and about 10.2% state supplemental tax. A $25/hour worker with 10 OT hours nets roughly $230–$255 of the $375 gross.
CA bonus supplemental rate 10.23%
| Gross overtime pay | $375.00 |
| Regular-rate portion (taxed normally) | $250.00 |
| Deductible premium portion (the “half”) | $125.00 |
| Federal withholding (22% supplementalpremium deduction applied | − $55.00 |
| FICA (6.2% SS + 1.45% Medicare)applies to all overtime — not deductible | − $28.69 |
| State tax (California 10.2%) | − $38.36 |
Estimate at paycheck level: federal at the 22% supplemental withholding rate with the 2026 premium deduction applied, FICA flat, state at a published supplemental rate or your custom estimate. Your actual check and tax return may differ. Not tax advice.
| State | California (CA) |
|---|---|
| State tax on OT | ≈ 10.2% supplemental withholding (estimate) |
| FICA | 7.65% on all overtime pay |
| 2026 federal break | Half-time premium deductible from federal income tax |
Common uses
- Check a California paycheck that included overtime
- Decide whether extra shifts are worth it after CA taxes
- Compare 1.5× versus 2× shift offers