2027 Tax Brackets and Standard Deduction (Projected)

The IRS has not yet published the inflation adjustments for tax year 2027 — the figures that apply to income earned in 2027 and the return filed in early 2028. Last year's came on October 9, 2025 (Revenue Procedure 2025-32); the 2027 release is expected in October or November 2026. Until then, the most reliable preview is the projection Bloomberg Tax & Accounting published on September 11, 2026, which points to a 3.2% inflation adjustment, up from 2.7% the year before. Every figure on this page is that projection, clearly labeled, and will be replaced with the official numbers the day the IRS issues them.

The headline numbers: a projected standard deduction of $16,600 for single filers (up $500), $33,200 for married couples filing jointly (up $1,000) and $24,950 for heads of household (up $800). The seven tax rates do not change — the One Big Beautiful Bill Act made the 10% through 37% schedule permanent in 2025 — but every bracket threshold moves up about 3.2%, so slightly more of each dollar is taxed at the lower rates.

Bloomberg's note on the head-of-household figure: its arithmetic produces $24,925, but the statutory rounding rules are expected to yield $24,950 when the IRS publishes. The projection also had to work around a data gap — the Bureau of Labor Statistics did not publish an October 2025 consumer price index because of the federal funding lapse, so the chained CPI used for the adjustment was computed on an 11-month average rather than the usual twelve. That is a small source of uncertainty in every figure here.

The projected 2027 brackets for single filers, alongside 2026 for comparison. Taxable income means income after the standard deduction (or itemized deductions), not gross pay.

And for married couples filing jointly. Joint brackets are exactly double the single brackets through 32%; the 35% band is narrower for couples, which is the one place the marriage penalty survives in the rate schedule.

What the change is worth: a single filer with $75,000 of wages and no other deductions has $58,900 of taxable income in 2026 and owes $7,725 of federal income tax. In 2027, with the larger standard deduction and wider brackets, the same wages produce $58,400 of taxable income and about $7,390 of tax — a saving of roughly $335 even though nothing about the paycheck changed. A married couple on $150,000 saves about $670. Those are the dollars inflation indexing is designed to protect; a raise of less than 3.2% in 2027 means a real-terms pay cut, and the brackets are adjusted so that it is not also a tax increase.

The alternative minimum tax exemption is projected to rise as well, to $93,000 for single filers and $144,700 for joint filers. The AMT matters mainly to people exercising incentive stock options and to high earners with large state-tax deductions; the AMT trigger calculator shows whether a given year's income crosses into it.

Several OBBBA provisions are fixed in statute rather than indexed, so they do not move with inflation in 2027. The additional $6,000 deduction for taxpayers 65 and older runs through 2028 at the same amount. The deductions for qualified tips (up to $25,000) and for the premium portion of qualified overtime (up to $12,500 single, $25,000 joint) likewise run through 2028 unindexed. The state and local tax deduction cap, $40,000 for 2025, rises 1% a year — to $40,400 for 2026 and $40,804 for 2027 — before reverting to $10,000 in 2030. The child tax credit, $2,200 for 2025, is indexed from 2026 onward in $100 steps, so it may or may not tick up for 2027.

What to do with projections. Employers will load the official 2027 withholding tables in January; if your withholding is calibrated to 2026 and your pay does not change, slightly less federal tax should come out of each check next year. Anyone planning a Roth conversion, a large capital gain or a retirement-account withdrawal in 2027 can use the projected bands now to size it — the tax bracket visualizer and the Roth vs Traditional calculator both let you model the brackets — and firm the number up once the revenue procedure is out. For the per-paycheck effect on 2026 pay today, use the paycheck calculator.

Source for the projections: Bloomberg Tax & Accounting, Projected 2027 Income Tax Rates, September 11, 2026, as reported by CPA Practice Advisor. 2026 figures are from IRS Revenue Procedure 2025-32. This page will be updated with the official 2027 figures when the IRS publishes them.

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