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

Side-Gig Withholding Calculator

For W-2 workers with 1099 side income.

The short answer: At the scenario numbers pre-loaded below, the OBBBA deductions total $3,640, worth about $801 in federal income tax at a 22% marginal rate ($31 per biweekly paycheck) — that's the gap your W-4 can capture during the year.

Filing StatusAnnual Income (MAGI)All wages + tips, before deductionsHourly RateRegular rateAnnual Overtime HoursAnnual Tip Income0 if noneVehicle Loan Interest0 if noneYour 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: $3,640

Extra tax you are on track to over-withhold: $801

≈ $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 OT/tips deductions apply to W-2 wages only. Gig income needs its own estimated-tax plan; the W-4 4(c) extra-withholding line can cover it.

• W-2 side: OBBBA deductions via 4(b)
• Gig side: quarterly estimates or W-4 4(c)
• SE tax is separate from income tax

Worked Example

A worker with W-2 OT plus gig income.

• Total OBBBA deductions: $3,640
• Federal income tax savings: $801 at the 22% marginal rate
• Per biweekly paycheck: $31 — capture it via a W-4 4(b) adjustment instead of waiting for refund season

Keep Reading

• /withholding/
• /rules/

Frequently Asked Questions

Do gig earnings get the OT/tips deduction?

No — those are W-2 wage deductions. Gig income is business income with its own rules.

Should extra withholding cover gig tax?

4(c) extra withholding per paycheck is the simplest alternative to quarterly estimates.