Overtime Calculator 2026 — Illinois
Illinois overtime workers pay federal income tax, FICA, and Illinois's flat 4.95% state income tax on their extra hours — a predictable combined rate that typically leaves 65–70 cents of each overtime dollar. Use this calculator to see your exact Illinois OT after-tax pay and how much those extra hours are worth annually.
Also see: Illinois Salary Calculator →
Your Hours & Pay
Typically 40 for full-time
Hours beyond your regular schedule
Default 52 — reduce for unpaid time off
OT Gross / Week
$375
$38/hr × 10 hrs
OT Net / Week
$269
After all taxes
Overtime is NOT taxed at a higher rate
Your overtime is taxed at your marginal rate of 22.0%. You keep $27 of every overtime hour you work.
Annual Comparison
| Without OT | With OT | |
|---|---|---|
| Annual Gross | $52,000 | $71,500 |
| Federal Tax | −$4,070 | −$7,102 |
| State Tax | −$2,574 | −$3,539 |
| FICA (SS + Medicare) | −$3,978 | −$5,470 |
| Annual Take-Home | $41,379 | $55,389 |
| Extra from OT | — | +$14,011/yr |
Frequently Asked Questions
Does overtime count as regular income for state taxes?
Yes — all US states that have an income tax treat overtime as ordinary wages, taxed the same as your regular hourly pay. There is no state-level overtime tax exemption. Your OT earnings are added to your total income for the year and taxed at your state marginal rate.
Does California have special overtime rules?
Yes — California has some of the most worker-protective overtime laws in the US. In addition to weekly overtime (over 40 hours), California requires daily overtime (over 8 hours in a day) and double time (over 12 hours in a day, or over 8 on the 7th consecutive workday). The federal FLSA only requires weekly overtime.