If you work overtime in California, you've probably heard about "No Tax on Overtime." The good news: most California overtime workers do benefit from the federal deduction created by the One Big Beautiful Bill Act. The catch: California's overtime rules are broader than the federal Fair Labor Standards Act (FLSA), and only FLSA hours qualify for the deduction. A schedule that earns you California state overtime can produce zero federal deduction if those hours don't also push your weekly total over 40.
This page explains the trap, shows the math with specific examples, and walks through how to calculate your actual deduction. If you want to skip to the answer, the free calculator handles California's quirks automatically with the day-by-day input mode.
The Good News: California Workers Do Benefit
Despite the calculation complications, the typical California hourly worker pulling regular overtime walks away with real federal tax savings under OBBBA. Workers who put in genuine FLSA overtime — extra shifts, weekend coverage, peak-season hours — qualify for the same deduction available to workers in any other state. The deduction works on your federal return regardless of where you live; California is not an exclusion zone.
Single filer, $42/hour regular rate. Picks up extra 12-hour shifts beyond her normal 3×12 schedule. Total of 200 FLSA overtime hours during 2025. Filing status: Single. MAGI: $98,000.
Maria also still owes California state income tax and FICA on her overtime, but the OBBBA deduction puts roughly $924 back in her pocket at filing time. For workers earning more — say a construction foreman or warehouse manager with 300+ FLSA overtime hours at higher rates — the federal savings can hit the $12,500 cap quickly.
The California Trap: Daily OT vs Weekly OT
California's labor law is more worker-friendly than federal law. Under California Labor Code §510, you get overtime pay if you work more than 8 hours in a single day, even if your weekly total is under 40 hours. The federal FLSA, by contrast, only triggers overtime when your weekly total exceeds 40 hours. The OBBBA deduction (IRC §225) is tied to FLSA — not California law.
That mismatch creates a real-world problem: schedules that earn California daily overtime can have zero qualifying hours for the federal deduction. Two examples make this concrete.
Example A — The 4×10 Schedule (compressed workweek)
On a 4×10 schedule, California pays you 8 hours of daily overtime (2 hours × 4 days, all the time over 8/day). But your weekly total is exactly 40 — there's no FLSA overtime. Federal OBBBA deduction: zero. You receive California overtime pay but cannot claim any federal deduction for it. This is the calculation trap.
$28/hour, works 4 × 10-hour days, 50 weeks/year. California pays him 2 hours of daily OT per day × 4 days × 50 weeks = 400 hours of state OT pay. But weekly total never exceeds 40.
Example B — The 5×9 Schedule (typical extended week)
On a 5×9, you've crossed the 40-hour weekly threshold. California still gives you 5 hours of daily OT (1 hour × 5 days), but the same 5 hours also qualify as FLSA overtime — they aren't double-counted. Your weekly FLSA overtime is 5 hours, and across 50 worked weeks that's 250 annual FLSA OT hours qualifying for the federal deduction. At $25/hour, that's a $3,125 premium and roughly $688 in federal savings at the 22% bracket.
How to Calculate Your Qualifying Hours
Here is the exact method approved by IRS Notice 2025-69. You can do this from pay stubs or your year-end pay summary even if your employer didn't break out overtime separately on your W-2.
- List your total hours worked each workweek. Use pay stubs or your payroll portal (ADP, Workday, Paychex). Write down total hours worked Monday through Sunday for each week of the tax year. Yes, every week — it gets faster after the first few.
- Subtract 40 from each weekly total. For each week, calculate
max(0, weekly hours − 40). Only the portion over 40 hours counts as FLSA-qualifying overtime. A 38-hour week contributes 0 FLSA OT hours; a 47-hour week contributes 7. - Sum the weekly FLSA hours. Add together all weekly FLSA overtime hours across the year. This total is your annual FLSA-qualifying overtime hours for the deduction.
- Multiply by 0.5 × your regular rate. Annual FLSA hours × regular hourly rate × 0.5 = qualified overtime premium. Enter this amount on Schedule 1-A of Form 1040.
If counting individual weeks sounds tedious, our calculator has a day-by-day mode specifically for this: enter your typical week as a 7-day grid, set the number of weeks worked, and the calculator computes your annual FLSA-qualifying hours automatically.
Calculate your California-specific deduction →
Use day-by-day mode for accurate California numbers. Free, no signup.
Open the CalculatorCalifornia State Tax: The Other Half of the Story
The OBBBA deduction reduces your federal income tax. California's state income tax on overtime is completely unaffected. As of May 2026, California has not enacted any conforming legislation — and given the state's $11+ billion projected revenue loss if it did, conformity is unlikely in the near term.
California uses a 2015 IRC conformity date (the most outdated in the country) and starts its tax calculation from federal AGI, which sits above the OBBBA deduction on Form 1040. The result: every dollar of overtime pay is still fully taxed by California at marginal rates ranging from 1% to 13.3% — the highest in the United States.
Filing: W-2 Box 14 and Pay Stub Calculation
For tax year 2025, California employers (like most employers nationwide) were not required to break out qualified overtime separately on Form W-2. The IRS gave employers a one-year grace period under IRS Notice 2025-62. Many California employers used Box 14 anyway with labels like "QUAL OT", "FLSA OT", or "OBBBTT". Others didn't — and that's allowed.
If your W-2 shows your qualified overtime in Box 14, copy that number to Schedule 1-A. If it doesn't, use the divide-by-3 shortcut from IRS Notice 2025-69: take your total time-and-a-half overtime pay shown on your year-end pay summary and divide by 3. That gives you the premium portion deductible under OBBBA. Or, calculate directly using regular rate × 0.5 × annual FLSA OT hours (Step 4 above). Both methods produce identical results.
Starting with tax year 2026, separate W-2 reporting becomes mandatory. The IRS has signaled this will likely be a new Box 12 code, but the exact letter hasn't been finalized as of mid-2026. Our W-2 guide walks through both the 2025 and 2026 reporting setups in detail.
Industries Most Affected in California
Some California industries see the biggest impact from this calculation issue. Worked examples for each:
🏥Healthcare
RN average rate: ~$58/hour in CA. Common 3×12 schedule + picked-up extra shifts.
100 FLSA OT hrs × $58 × 0.5 = $2,900 premium → ~$638 saved @ 22%
🏗Construction
Tradesperson avg: ~$35/hour. Often 5×10 or 6×8 schedules pushing past 40.
300 FLSA OT hrs × $35 × 0.5 = $5,250 premium → ~$1,260 saved @ 24%
🛒Retail / grocery
Hourly: ~$20/hour. Peak-season hours often push above 40/week.
150 FLSA OT hrs × $20 × 0.5 = $1,500 premium → ~$180 saved @ 12%
📦Warehouse / logistics
Hourly: ~$24/hour. Amazon, Target, Costco — heavy peak overtime.
250 FLSA OT hrs × $24 × 0.5 = $3,000 premium → ~$660 saved @ 22%
Workers in healthcare on 207(k) schedules (8/80) and construction crews on 4×10 schedules need to be especially careful: the schedule structure determines whether daily-OT hours also cross the 40-hour weekly threshold. If you're never working over 40 hours in a workweek, you don't have any FLSA hours to deduct regardless of how much California daily OT you receive.
Frequently Asked Questions
Does California overtime qualify for the no-tax-on-overtime deduction?
Only partially. The OBBBA federal deduction covers FLSA overtime — hours worked over 40 in a single workweek. California's daily overtime (over 8 hours per day) qualifies only if those hours also push your weekly total above 40. If you work a 4×10 schedule (40 hours total over 4 days), California pays you daily overtime but no hours qualify for the federal deduction.
I work 4×10 — do I get any federal overtime deduction?
No. A 4×10 schedule is 40 total hours per week. California requires daily overtime (hours 9 and 10 each day), but the OBBBA federal deduction only covers hours over 40 per week. Since your weekly total is exactly 40, you have zero FLSA-qualifying overtime hours and no federal deduction — even though your employer pays you California daily overtime.
What if I work a 5×9 schedule?
A 5×9 schedule is 45 total hours per week. The first 40 hours are regular time, then 5 hours are FLSA overtime. All 5 of those FLSA hours qualify for the federal deduction. California also pays daily overtime for hour 9 each day, but the federal deduction counts the same hours either way — it's a single 5-hour overtime bucket per week, not double-counted.
Does California reduce my state income tax on overtime?
No. California has not conformed to the federal OBBBA deduction as of May 2026. California uses a 2015 IRC conformity date and federal AGI as its starting point, so the deduction does not flow through. You still owe California state income tax on all overtime pay at rates up to 13.3% — the federal deduction reduces federal tax only. See our State Tax Guide for full details.
What if my employer didn't put my overtime in Box 14?
You can still claim the deduction. IRS Notice 2025-62 made employer reporting voluntary for tax year 2025. Per IRS Notice 2025-69, you can calculate the qualified overtime premium from your pay stubs: take your total overtime pay shown on your year-end summary and divide by 3 (for time-and-a-half), or multiply your regular rate × 0.5 × your annual FLSA overtime hours. Both methods give the same answer. Our W-2 guide walks through this.
Are California nurses with 8/80 schedules covered?
Yes. Healthcare workers on a 207(k) work period (typically the 8/80 schedule) qualify for both California state overtime rules and federal FLSA overtime. Your employer should track FLSA overtime per the 8/80 schedule. Hours that exceed those FLSA thresholds qualify for the OBBBA deduction. If you're unsure, check your pay stub for an overtime line item or ask your HR.
How much can a California worker save?
It depends on your overtime hours, regular rate, marginal federal tax bracket, and filing status. As a rough example: a single nurse earning $42/hour who works 200 FLSA overtime hours has a $4,200 qualified premium ($42 × 0.5 × 200). At a 22% federal marginal rate, that's roughly $924 in federal tax savings. The deduction is capped at $12,500 single / $25,000 joint and phases out above $150K single / $300K joint MAGI.
Does the deduction reduce my FICA on overtime?
No. Social Security (6.2%) and Medicare (1.45%) still apply to all overtime pay including the deductible premium portion. California State Disability Insurance (SDI, currently 1.2%) also still applies. The OBBBA deduction reduces only federal income tax.
Does California Conform to the OBBBA Overtime Deduction?
No. California has not conformed to the federal OBBBA overtime deduction as of 2026. California workers still owe full state income tax (up to 13.3%) on all overtime earnings. The federal deduction reduces only your federal income tax bill. See the full 50-state conformity guide for how California compares to every other state.