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Tax Year 2026Updated July 13, 2026

Does Iowa Tax Overtime in 2026?

No - Iowa does not tax qualifying overtime premium pay under the OBBBA deduction in 2026. Iowa provides double confirmation: the state’s IA 1040 starts from federal taxable income (structurally incorporating the deduction), and the Iowa Department of Revenue has published explicit guidance confirming that overtime pay under OBBBA is not subject to Iowa income tax. Iowa overtime workers claiming the federal deduction (IRC §225, up to $12,500 single / $25,000 MFJ) automatically receive the state benefit through both mechanisms.

How Iowa's Overtime Tax Treatment Works

Iowa’s conformity to the OBBBA overtime deduction is the strongest available: double confirmation through two independent mechanisms. This gives Iowa overtime workers the highest possible assurance that their deduction will be honored at the state level.

The first mechanism is structural flow-through. Iowa’s IA 1040 Line 02 equals federal taxable income - the figure from federal Form 1040, line 15. The OBBBA overtime deduction (IRC §225) is an above-the-line deduction that reduces federal taxable income before Iowa’s computation begins. Iowa then applies its flat 3.8% rate to this already-reduced figure. The deduction is automatically incorporated into the Iowa tax base without any separate state action.

The second mechanism is explicit DOR guidance. The Iowa Department of Revenue published guidance specifically confirming that overtime pay qualifying under the OBBBA is not subject to Iowa income tax. This explicit statement removes any doubt that might exist from the structural pathway alone. Even if there were questions about potential Iowa add-backs, the DOR’s published position makes clear no add-back applies. For overtime workers, this double confirmation means Iowa is one of the most reliable conforming states.

Federal Overtime Deduction Quick Reference

DetailValue
IRC Section§225 (OBBBA)
Maximum deduction$12,500 overtime ($25,000 MFJ)
Deduction typeAbove-the-line (Schedule 1-A)
FICA still applies?Yes (Social Security 6.2% + Medicare 1.45%)
MFS eligible?No (MFJ or Single/HoH only)
Effective datesJan 1, 2025 – Dec 31, 2028
Iowa treatmentConforms
What qualifies?Overtime premium only (the 0.5x above regular rate), FLSA non-exempt employees

Worked Examples Comparing Federal and Iowa Treatment

Example 1: Factory worker with $9,500 in overtime premium (single filer, 12% federal bracket)

Federal return:
Qualifying overtime premium: $9,500
Overtime deduction claimed: $9,500 (capped at $12,500)
Estimated federal tax savings: $1,140.00

Iowa return:
State tax savings from deduction: $361.00
Iowa’s flat 3.8% rate applies to the reduced taxable income. The $9,500 overtime deduction flows through both the structural starting point and Iowa DOR’s explicit guidance, saving $361.00 in Iowa state tax.

Example 2: Healthcare aide with $12,500 in overtime premium (single filer, 22% federal bracket)

Federal return:
Qualifying overtime premium: $12,500
Overtime deduction claimed: $12,500 (capped at $12,500)
Estimated federal tax savings: $2,750.00

Iowa return:
State tax savings from deduction: $475.00
This worker claims the full $12,500 single-filer cap. Iowa’s double confirmation means no ambiguity: both the structural flow-through and explicit DOR guidance confirm the deduction reduces Iowa taxable income.

Iowa-Specific Rules for Overtime Workers

Premium-only rule applies: Only the overtime premium is deductible, not total overtime wages. For a worker earning $22/hour regular pay and $33/hour overtime (time-and-a-half), only the $11/hour premium qualifies. Iowa does not modify this federal rule. The same premium calculation applies for both federal and Iowa purposes.

Recent flat tax rate: Iowa transitioned to a flat tax under SF 2367 (2022). The rate stepped down from 4.4% (2023) to 3.9% (2024) to 3.8% for 2025 - 2026. Overtime workers benefit from this lower rate: each dollar of qualifying overtime premium deducted saves 3.8 cents in Iowa state tax, in addition to the federal savings.

School district surtax benefit: Iowa school districts may levy income surtaxes on Iowa taxable income. Because the OBBBA overtime deduction reduces Iowa taxable income, it also reduces the surtax base. Overtime workers in districts with active surtaxes receive a small additional benefit beyond the 3.8% state rate savings.

Manufacturing and agriculture context: Iowa’s economy has significant manufacturing and agricultural processing sectors where overtime is common. Workers in these industries who are non-exempt under the FLSA can benefit substantially from the overtime deduction, especially during peak production periods when overtime hours are high.

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Frequently Asked Questions

Does Iowa conform to the OBBBA no-tax-on-overtime provision?
Yes - with double confirmation. Iowa conforms through two independent mechanisms: (1) Iowa’s IA 1040 starts from federal taxable income (Line 02), so the overtime deduction flows through structurally; and (2) the Iowa DOR published explicit guidance confirming that overtime pay under OBBBA is not subject to Iowa income tax. Both mechanisms independently produce the same result.
Do I still pay FICA on overtime in Iowa?
Yes. The OBBBA overtime deduction only applies to federal and state income taxes. Social Security tax (6.2%) and Medicare tax (1.45%) still apply to all overtime wages. Iowa does not impose a separate state payroll tax on wages.
What qualifies as deductible overtime in Iowa?
Only the overtime premium qualifies - not the full overtime wage. For time-and-a-half pay, only the 0.5x portion above your regular hourly rate is deductible. You must be a non-exempt employee under the FLSA or equivalent state law. Salaried-exempt and self-employed individuals are not eligible. Iowa does not modify these federal qualification rules.
What is the overtime deduction cap for Iowa filers?
The federal cap is $12,500 for single and head-of-household filers, and $25,000 for married filing jointly. Iowa does not impose a separate state cap - the federal cap applies for both federal and Iowa purposes.
What does Iowa's 'double confirmation' mean for overtime workers?
Iowa verifies its OBBBA overtime conformity through two entirely separate pathways. First, the IA 1040 Line 02 starts from federal taxable income, so the overtime deduction is structurally embedded before Iowa’s 3.8% rate applies. Second, Iowa DOR published explicit guidance confirming overtime pay under OBBBA is not subject to Iowa income tax. Either pathway alone would suffice; both together provide maximum certainty.
Does Iowa's school district surtax apply to overtime?
Iowa school district surtaxes are calculated on Iowa taxable income. Since the OBBBA overtime deduction reduces Iowa taxable income through the federal taxable income starting point, it also reduces the base for school district surtaxes. Overtime workers in districts with surtaxes receive an additional small benefit.
Can Married Filing Separately filers claim the overtime deduction in Iowa?
No. The federal OBBBA overtime deduction (IRC §225) excludes Married Filing Separately filers. Since Iowa’s benefit flows through the federal deduction, MFS filers cannot benefit at either the federal or Iowa level.