2027 federal income tax: the 37% bracket starts at $661,375 of taxable income for single filers, 3.2% above 2026
Where each rate starts, single filers; married couples filing jointly reach 37% at $793,650 · bracket thresholds rose 3.2% to 3.2% on 2026; only income inside a band is taxed at its rate
Macro · Personal Finance · IRS · 31 Dec 2026