Georgia switched to a flat income tax and, for 2026, cut the rate to 4.99% (down from 5.19% under HB 463). This calculator itemizes your federal withholding and the Georgia state tax for 2026 and shows the math.
One flat rate, a mid-year cut
Georgia now taxes all taxable income at a single 4.99%, after a $15,000 standard deduction (single) — up from $12,000 under the same law. The rate cut from 5.19% took effect for the whole 2026 tax year, so your annual liability uses 4.99%. The state’s roadmap keeps lowering the rate — toward 3.99% — if revenue targets are met, and the standard deduction is scheduled to keep rising from 2027 under the same revenue tests.
Limits
Covers federal income tax, FICA, and the Georgia flat tax using 2026 figures. It excludes the deduction step-ups scheduled from 2027, dependent credits, retirement-income exclusions, and W-4 fine-tuning. Check your refund with the tax refund calculator; the flexible paycheck calculator handles any state.