Does No Tax on Overtime Reduce FICA?
No. The IRC Section 225 overtime deduction reduces only federal income tax. You still owe Social Security tax at 6.2% (on wages up to $184,500) and Medicare tax at 1.5% on all overtime earnings, including the premium portion. The deduction lowers your adjusted gross income for income tax purposes, but it does not change your employment tax base.
What the deduction actually reduces
The overtime deduction is an above-the-line income tax deduction. It reduces your adjusted gross income (AGI), which in turn reduces the federal income tax you owe. The maximum deduction is $12,500 for single filers and $25,000 for Married Filing Jointly filers.
"Above the line" means the deduction is taken before calculating your taxable income, regardless of whether you itemize or take the standard deduction. It appears on Schedule 1-A and flows to Form 1040 Line 10.
In states that conform to the OBBBA overtime provision, the deduction may also reduce your state income tax liability. However, this varies by state, and not all states have adopted the provision.
Why FICA still applies
FICA taxes (Social Security and Medicare) are employment taxes calculated on gross wages, not on AGI or taxable income. The income tax system and the payroll tax system use different bases:
- Income tax base: Gross income minus above-the-line deductions equals AGI; AGI minus standard/itemized deductions equals taxable income. The overtime deduction reduces this base.
- FICA tax base: Gross wages (Box 3 and Box 5 on your W-2). No income tax deduction, including the overtime deduction, changes these amounts.
Congress could have structured the overtime benefit as a payroll tax exemption (which would have reduced FICA), but instead chose an income tax deduction. This means your employer continues to withhold 6.2% for Social Security and 1.5% for Medicare on every overtime dollar, and you receive no FICA credit or refund for the overtime premium.
How much you still save (income tax savings only)
Even without FICA savings, the overtime deduction provides meaningful income tax relief. Your savings equal the deductible amount multiplied by your marginal income tax rate:
Income tax savings by bracket (single filer, full $12,500 deduction)
| Marginal Rate | Tax Saved |
|---|---|
| 12.0% | $1,500 |
| 22.0% | $2,750 |
| 24.0% | $3,000 |
| 32.0% | $4,000 |
These figures represent federal income tax savings only. FICA taxes on overtime wages remain unchanged.
For your personal estimate, try the No Tax on Overtime Calculator or the FICA Calculator.
Additional Medicare Tax considerations
If your total wages exceed $200,000 (single filers), you owe an additional 0.9% Medicare surtax on the excess. The overtime deduction does not reduce this tax either, because the Additional Medicare Tax is also calculated on gross wages, not on AGI.
However, there is an indirect interaction worth noting. The Additional Medicare Tax threshold is based on MAGI for Form 8959 reconciliation purposes. While the withholding calculation uses gross wages, your final tax return reconciliation uses MAGI. Since the overtime deduction reduces AGI (and therefore MAGI), it could slightly affect the Additional Medicare Tax calculation on your return in rare edge cases. For most taxpayers, the practical impact is negligible because the withholding threshold and MAGI threshold are both $200,000 for single filers.
The key takeaway: the overtime deduction saves you money on federal income tax, but your FICA obligations remain the same. For a full breakdown of payroll taxes on your paycheck, use the FICA Calculator.