2025 tax brackets, and the standard deduction a mid-year law raised further
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Every 2025 bracket moved up for inflation on schedule in October 2024 — then a law signed in July 2025 raised the standard deduction again, for a tax year already more than half over. Here is what actually applied.
For 2025, the standard deduction is $15,750 for a single filer, $31,500 for a married couple filing jointly, and $23,625 for head of household — higher than the IRS originally announced in October 2024, after a law signed in July 2025 raised all three figures for the year already underway. The seven tax rates themselves did not move: 10%, 12%, 22%, 24%, 32%, 35% and 37%, the same structure in place since 2018. What changed, and changed twice, was the deduction that comes off income before any of those rates apply.
The 2025 brackets themselves
The IRS sets each year's thresholds the previous fall, adjusted for inflation under a formula the later law left untouched. For a single filer in 2025:
| Rate | Taxable income (single) |
|---|---|
| 10% | $0 – $11,925 |
| 12% | $11,925 – $48,475 |
| 22% | $48,475 – $103,350 |
| 24% | $103,350 – $197,300 |
| 32% | $197,300 – $250,525 |
| 35% | $250,525 – $626,350 |
| 37% | above $626,350 |
Married filing jointly roughly doubles each threshold: the 10% band runs to $23,850, the 22% band starts at $96,950, and the top rate begins at $751,600. These figures come from the IRS's 2025 inflation-adjustment announcement, published in October 2024 and unaffected by the later law that changed the deduction.
A deduction that changed twice in one year
The IRS's original October 2024 announcement set the 2025 standard deduction at $15,000 for a single filer, $30,000 for a married couple filing jointly, and $22,500 for head of household — the ordinary annual inflation adjustment, following the same formula as the brackets above. Then, on July 4, 2025, the One Big Beautiful Bill Act raised all three figures again, for a tax year already more than half over: to $15,750, $31,500 and $23,625 respectively. Both sets of numbers were accurate at different points in the year, but only the second is what actually applies on a 2025 return — the increase covers the full tax year, not just the months remaining after the bill was signed. Both figures are confirmed directly by the IRS's later 2026 announcement, which restates the corrected 2025 figures for comparison alongside the new 2026 numbers.
What it comes to on a real income
Take a single filer earning $85,000 in 2025:
| Step | Amount |
|---|---|
| Gross salary | $85,000 |
| Standard deduction | −$15,750 |
| Taxable income | $69,250 |
| 10% on first $11,925 | $1,192 |
| 12% on the next $36,550 | $4,386 |
| 22% on the remaining $20,775 | $4,571 |
| Total federal tax | $10,149 |
That is an effective rate of 11.9% on $85,000, even though the last dollar earned sits in the 22% bracket. The income tax calculator runs this same ladder for any income and filing status.
The same arithmetic, married filing jointly
The ladder works identically for a married couple, just against the wider thresholds. Take a household income of $150,000:
| Step | Amount |
|---|---|
| Household income | $150,000 |
| Standard deduction | −$31,500 |
| Taxable income | $118,500 |
| 10% on first $23,850 | $2,385 |
| 12% on the next $73,100 | $8,772 |
| 22% on the remaining $21,550 | $4,741 |
| Total federal tax | $15,898 |
An effective rate of 10.6% on $150,000 — lower than the single filer's 11.9% on $85,000, mostly because the larger deduction and wider brackets leave more of this household's income sitting inside the 10% and 12% bands before the 22% rate applies.
Head of household sits between the two
Head of household status — generally an unmarried filer who pays more than half the cost of a home for a qualifying dependent — gets a $23,625 standard deduction, between the single and joint figures, and its own bracket thresholds sit closer to a single filer's than to a couple's: the 12% band runs to $64,850, against $48,475 for a single filer. The top rate is a genuine quirk worth knowing: it starts at the same $626,350 for both single and head-of-household filers — only married filing jointly gets a separately raised top threshold, at $751,600.
Why a July law change did not mean an amended return
Standard payroll withholding runs off tables an employer updates once a year, in January, based on whatever figures were current at that point — which for most of 2025 meant the smaller, original standard deduction. The July law change did not trigger a mid-year withholding update at most employers; instead, the larger deduction is reconciled automatically when a 2025 return is filed the following spring, the same as any other gap between what was withheld during the year and what was actually owed. Nobody needed to file an amended return over this, and nobody needed to ask their employer to adjust anything — the figure that matters is the one used on the return itself, and by the time 2025 returns were prepared, tax software and IRS forms reflected the higher amount.
The practical effect showed up as a slightly larger refund, or a slightly smaller balance due, than a taxpayer might have estimated during the year using the original figures — not as a separate check or a corrected W-2. Anyone who ran a mid-year tax estimate using the $15,000 deduction and then filed against the $15,750 figure would have found their actual liability a little lower than projected, which is the opposite direction of the usual mid-year surprise.
The standard deduction is a floor, not a mandate
Every filer is entitled to the standard deduction amounts above regardless of actual expenses, but itemizing — adding up mortgage interest, state and local taxes up to their cap, charitable gifts and a handful of other categories — replaces the standard deduction entirely if the itemized total is larger. Raising the standard deduction, as the July 2025 law did, pushes that break-even point higher: a taxpayer whose itemized deductions used to just clear the old $15,000 threshold may now fall short of the new $15,750 one, making the standard deduction the better choice for 2025 even without any change in their actual spending. It is worth re-running the comparison for 2025 rather than assuming whichever choice applied last year still wins.
What to check before assuming last year's numbers apply
- Confirm your filing status — the thresholds above are for single filers unless stated otherwise; married and head-of-household brackets sit at different points.
- Check whether your state also charges income tax with its own brackets and its own standard deduction; none of the above says anything about state liability.
- If you are self-employed or otherwise pay quarterly estimated tax, the 2025 figures above are what actually applied for the full year, including quarters paid before the July law change — no separate recalculation is needed for those earlier payments.
- Several benefits and phase-outs key off adjusted gross income rather than gross salary, so it is worth checking that figure specifically before assuming a bigger deduction changes what you are eligible for.
Sources
- IRS: Tax inflation adjustments for tax year 2025
- IRS: Revenue Procedure 2024-40
- IRS: Tax inflation adjustments for tax year 2026, including amendments from the One Big Beautiful Bill
This is general information, not tax advice. It describes 2025 federal brackets and the standard deduction only; state tax, credits, and your specific filing situation can change the result substantially. For a decision about your own return, consult a licensed tax preparer or the IRS directly.