Can I claim all four deductions?

Yes — if you qualify for each one independently. Overtime and tips require W-2 employment. The car loan deduction requires a qualifying vehicle assembled in the U.S. The senior deduction requires age 65+.

Does this work for self-employed or 1099 contractors?

No. The overtime and tips deductions only apply to W-2 employees. Self-employed income does not qualify.

Is FICA (Social Security and Medicare) included?

No. FICA taxes still apply to all wages, including overtime and tips. These deductions only reduce federal income tax.

← W-4 Withholding Adjuster

Married Couple OBBBA Withholding Calculator

Enter your full-year picture below. The estimate shows the annual and per-paycheck gap between withholding and the OBBBA-adjusted tax — no signup.

The short answer: The Garcias — at the scenario numbers pre-loaded below, the OBBBA deduction is $6,750, worth about $810 in federal income tax at a 12% marginal rate ($31 per biweekly paycheck). Exact figures update live as you change the inputs.

Filing StatusAnnual Income (MAGI)All wages + tips, before deductionsHourly RateRegular rateAnnual Overtime HoursAnnual Tip Income0 if noneVehicle Loan Interest0 if noneYour AgeSpouse Age

Federal Income Tax Withheld This Year (paystubs YTD)Your payroll is likely withholding as if none of the OBBBA deductions exist

Total OBBBA above-the-line deductions: $6,750

Extra tax you are on track to over-withhold: $810

≈ $31 per biweekly paycheck

File a revised W-4 (Step 4a "other income" negative adjustment or dependents/credits line) to bring this money home in each paycheck instead of waiting for a refund.

⚠️ This calculator provides estimates for informational and educational purposes only. It is not tax advice. Results are based on the One Big Beautiful Bill Act (OBBBA) and IRS Schedule 1-A. Consult a qualified tax professional for your specific situation.

Withholding vs. What You Actually Owe

The two-job W-4 problem compounds with OBBBA: each employer's withholding ignores the other's deductions, so dual-earner couples under-withhold — or with the new deductions, sometimes over-withhold on the OT side. The W-4's two-job checkbox or the IRS estimator gets close; this page runs the OBBBA-specific math including the doubled MFJ caps that tables rarely reflect.

The full rules, caps and phase-outs for every deduction are in one table on the OBBBA rules page.

Worked Example

The Garcias both work W-2 jobs, one with overtime, plus a minivan loan in the family.

• Deductible amount: $6,750
• Federal income tax savings: $810 (at the 12% marginal rate)
• Per biweekly paycheck: $31

Adjust once on your W-4 and that gap shows up in your paychecks instead of waiting for refund season.

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Frequently Asked Questions

How should a married couple handle W-4s under OBBBA?

Put the adjustment on the higher-earning spouse's W-4 (single point of truth), use the two-jobs step, and enter the OBBBA deduction estimate as an extra deduction amount — the calculator converts your combined deductions into the right entry.

Does adjusting my W-4 change how much tax I owe?

No. Withholding only changes when you pay — per paycheck versus at refund time. Your actual tax is set by the OBBBA deductions themselves, which this calculator estimates.