Audited —·Last updated 27 Jul 2026·5 citations·Tier 1·0 uses

2026 Federal Income Tax Calculator

Calculate your 2026 federal income tax using IRS marginal brackets. See your exact tax, plus the gap between your marginal and effective rate.

Federal Income Tax Calculator

Total wages, salary, or self-employment income before any deductions.
$
Filing Status
2026 IRS default is $16,100 (Single). Married Filing Jointly filers should enter $32,200 unless itemizing a larger deduction instead.
$
Above-the-line adjustments (e.g. traditional 401(k)/IRA contributions) or itemized deductions in excess of the standard deduction.
$
Total Federal Tax
$7,670.00
Marginal-bracket tax computed on your taxable income for the 2026 tax year.
Taxable Income
$58,900.00
Marginal Tax Rate
22.00%
Effective Tax Rate
13.02%
After-Tax Income
$67,330.00

Background.

A federal income tax calculator answers the question every US wage earner eventually asks: given my income, my filing status, and my deductions, what do I actually owe the IRS this year? This calculator uses the 2026 tax year brackets, verified directly from the IRS on July 27, 2026 — the most recent inflation-adjusted figures the agency has published, released in Revenue Procedure 2025-32 on October 9, 2025. The seven tax rates themselves (10%, 12%, 22%, 24%, 32%, 35%, and 37%) did not change for 2026: the One, Big, Beautiful Bill Act, signed into law July 4, 2025, made the 2017 Tax Cuts and Jobs Act rate structure permanent instead of letting it expire at the end of 2025. What did change is the income level at which each rate kicks in — the IRS indexes those thresholds to inflation every year, and 2026's thresholds rose roughly 2.7% over 2025.

The single most important thing this calculator does — and the single most common thing people misunderstand about their own tax bill — is compute tax using marginal brackets rather than a flat rate. Your tax is not simply "your income times your bracket's rate." Instead, each dollar of income is taxed at the rate of the bracket it falls into: your first $12,400 (single) is taxed at 10%, the next chunk up to $50,400 at 12%, and so on, only reaching your top marginal rate for income above the highest threshold you cross. A taxpayer whose last dollar is taxed at 22% is NOT paying 22% on their entire income — they are paying 22% only on the slice of income inside that bracket, with lower slices taxed at 10% and 12%. This calculator reports both numbers side by side: your marginal rate (the rate on your next dollar) and your effective rate (the average rate across everything you earned), and the gap between them is usually substantial — often 8 to 15 percentage points for a typical household.

To use the calculator, enter your annual gross income, choose your filing status, and confirm or adjust the standard deduction. The 2026 standard deduction defaults to $16,100 for Single filers; Married Filing Jointly filers should change it to $32,200. If you have additional above-the-line adjustments (like traditional 401(k) or IRA contributions) or itemize deductions in excess of the standard amount, enter that total in the Additional Deductions field. The calculator subtracts both from your gross income to get your taxable income, then stacks the 2026 bracket rates against that figure.

This version of the calculator supports Single and Married Filing Jointly filing statuses. Head of Household and Married Filing Separately are not yet supported — the IRS's own newsroom summary for 2026 did not publish a complete, machine-readable bracket table for those statuses at the time this calculator was built, and rather than reconstruct those numbers from secondary sources, we chose to ship an honestly narrower tool rather than risk an unverified figure on a page millions of people use to plan their finances. Add those statuses in a future update once a primary-source table can be verified directly.

This calculator estimates federal income tax only. It does not model FICA payroll tax (Social Security and Medicare withholding), the Additional Medicare Tax, the Net Investment Income Tax, state or local income tax, the Alternative Minimum Tax, or refundable/non-refundable tax credits (Child Tax Credit, Earned Income Tax Credit, education credits, and so on) that could reduce your final bill below what this tool reports. For those, see Quanta's FICA tax, self-employment tax, capital gains tax, and quarterly tax estimator calculators, all linked below. Consult a qualified tax professional before making any filing decision — this tool is an educational estimate, not tax advice.

What is federal income tax calculator?

The US federal income tax system is progressive: it applies increasing marginal rates to successive slices of taxable income rather than one flat rate to your entire income. For 2026, there are seven marginal rates — 10%, 12%, 22%, 24%, 32%, 35%, and 37% — each applying only to the portion of taxable income that falls within its specific dollar range (its "bracket"). Taxable income is not the same as gross income: it is gross income minus deductions. Nearly every filer takes the standard deduction, a flat dollar amount the IRS adjusts annually for inflation — $16,100 for Single filers and $32,200 for Married Filing Jointly filers in 2026 — rather than itemizing individual deductible expenses (mortgage interest, state and local taxes up to the cap, charitable donations, and so on), because itemizing only helps if those itemized expenses exceed the standard deduction amount. Filing status matters because it changes both the standard deduction and where each bracket threshold falls; a Married Filing Jointly couple's brackets are roughly double a Single filer's at every rate, reflecting two incomes being taxed together. The One, Big, Beautiful Bill Act (Public Law 119-21, signed July 4, 2025) locked in the current seven-bracket structure permanently, ending the uncertainty about whether 2017's Tax Cuts and Jobs Act rates would revert to the older, higher pre-2018 brackets after 2025.

How to use this calculator.

  1. Enter your annual gross income — total wages, salary, or self-employment income before any deductions.
  2. Select your filing status: Single or Married Filing Jointly.
  3. Confirm or adjust the standard deduction. It defaults to the 2026 Single amount ($16,100); Married Filing Jointly filers should change it to $32,200.
  4. If you have additional above-the-line adjustments or itemize deductions beyond the standard amount, enter that total in Additional Deductions.
  5. Read your Total Federal Tax — the headline number computed by stacking the 2026 marginal brackets against your taxable income.
  6. Compare your Marginal Tax Rate (the rate on your NEXT dollar earned) against your Effective Tax Rate (the average rate across everything you earned) — the gap between the two is usually the most surprising number on the page.

The formula.

Tax = Σ (min(T,uᵢ) − lᵢ) × rᵢ
T · taxable incomelᵢ, uᵢ · bracket i lower/upper boundrᵢ · bracket i rate (10–37%)

Reviewed on 2026-07-27 against the IRS's own published 2026 figures. The calculation runs in two stages. First, taxable income is derived: gross income minus the standard deduction minus any additional deductions, floored at zero so that low earners never show a negative taxable income. Second, that taxable income is run through the 2026 bracket table for the selected filing status, stacking each bracket's rate against only the slice of income that falls inside it. For a Single filer, the 2026 brackets are: 10% on income up to $12,400; 12% on the portion from $12,400 to $50,400; 22% from $50,400 to $105,700; 24% from $105,700 to $201,775; 32% from $201,775 to $256,225; 35% from $256,225 to $640,600; and 37% on anything above $640,600. Married Filing Jointly brackets use roughly double those thresholds: 10% up to $24,800, 12% to $100,800, 22% to $211,400, 24% to $403,550, 32% to $512,450, 35% to $768,700, and 37% above that.

The marginal rate reported is simply the rate of the highest bracket actually reached — the rate that would apply to one more dollar of income. The effective rate is total tax divided by taxable income, expressed as a percentage; it is always less than or equal to the marginal rate, and the two are only equal when all of taxable income falls in the very first bracket (10%). This gap is the calculator's central teaching point: a filer whose marginal rate is 32% might have an effective rate closer to 21%, because most of their income was taxed at the lower rates below their top bracket.

These thresholds and rates are drawn directly from the IRS's own newsroom release covering Revenue Procedure 2025-32 (published October 9, 2025) and confirmed against the underlying revenue procedure text. The seven rates are permanent under the One, Big, Beautiful Bill Act (Public Law 119-21); only the dollar thresholds are re-indexed for inflation each year, which is why this same calculator's numbers will need to be updated again for the 2027 tax year once the IRS publishes new figures, typically each October or November.

A worked example.

Example

A married couple filing jointly earns $500,000 in combined gross income. They take the 2026 standard deduction of $32,200 and have an additional $20,000 in above-the-line retirement contributions, bringing their taxable income to $500,000 − $32,200 − $20,000 = $447,800. Running that figure through the 2026 Married Filing Jointly brackets: the first $24,800 is taxed at 10% ($2,480), the next $76,000 (from $24,800 to $100,800) at 12% ($9,120), the next $110,600 (from $100,800 to $211,400) at 22% ($24,332), the next $192,150 (from $211,400 to $403,550) at 24% ($46,116), and the remaining $44,250 (from $403,550 up to their taxable income of $447,800) at 32% ($14,160). Total federal tax comes to $2,480 + $9,120 + $24,332 + $46,116 + $14,160 = $96,208. Their marginal rate is 32% — that is the rate on their next dollar of income. But their effective rate, total tax divided by taxable income, is only $96,208 / $447,800 = 21.48%. That ten-and-a-half-point gap between the 32% marginal rate and the 21.48% effective rate is exactly the phenomenon this calculator is built to make visible: most of this couple's income was still taxed at 10%, 12%, 22%, and 24% before any of it reached the 32% bracket. Their after-tax income is $500,000 − $96,208 = $403,792.

other Deductions20,000
filing StatusmarriedJointly
standard Deduction32,200
gross Income500,000

Frequently asked questions.

What tax year do these brackets apply to?
This calculator uses 2026 tax year brackets, verified directly from the IRS on July 27, 2026 — the most recent figures the agency has published, released in Revenue Procedure 2025-32 on October 9, 2025. If you are filing a return for an earlier tax year (2025 or before), do not use this calculator; the dollar thresholds were lower in prior years. The 2026 tax year is the one you file a return for in early 2027. We label the tax year explicitly, right here and in the page title, because bracket thresholds change annually and using the wrong year's numbers can meaningfully misstate what you owe.
What is the difference between my marginal tax rate and my effective tax rate?
Your marginal rate is the tax rate applied to your next dollar of income — the rate of the highest bracket your taxable income reaches. Your effective rate is your total tax divided by your taxable income — essentially the average rate you paid across every dollar you earned. Because the US system taxes income in stacked slices, your effective rate is always lower than your marginal rate unless every dollar of your taxable income sits in the very first 10% bracket. For many households the gap is 8 to 15 percentage points. When people say 'I'm in the 24% bracket,' they usually mean their marginal rate — but they are not paying 24% on their whole income, only on the slice inside that bracket.
Why isn't my tax simply my income times my bracket's rate?
Because the US federal income tax system is marginal, not flat. If a flat-rate calculation were used, someone whose top bracket is 22% would pay 22% on every dollar they earned, including the dollars that are supposed to be taxed at only 10% or 12%. Instead, each bracket's rate applies only to the income that falls within that bracket's specific dollar range. A single filer with $58,900 of taxable income in 2026 pays 10% on the first $12,400, 12% on the next $38,000, and 22% only on the remaining $8,500 — not 22% on the full $58,900. Confusing marginal and flat calculations is one of the most common tax misconceptions, and it is exactly why this calculator reports both the marginal rate and the effective rate as separate numbers.
Should I use the standard deduction or itemize?
Use whichever is larger. The 2026 standard deduction is a flat $16,100 for Single filers and $32,200 for Married Filing Jointly filers — no receipts or documentation required. Itemizing means totaling specific deductible expenses (mortgage interest, state and local taxes up to the SALT cap, charitable contributions, certain medical expenses above a threshold, and others) on Schedule A instead. Since the standard deduction roughly doubled under the 2017 Tax Cuts and Jobs Act, the large majority of US filers — over 85% according to IRS statistics — now take the standard deduction because their itemizable expenses don't exceed it. If your itemized total is more than your standard deduction, enter the difference in this calculator's Additional Deductions field on top of the standard amount, or replace the standard deduction input with your full itemized total instead.
What counts as taxable income for this calculator?
Taxable income is your gross income (wages, salary, self-employment income, and other taxable earnings) minus the standard deduction (or itemized deductions) and any above-the-line adjustments, such as traditional 401(k) or traditional IRA contributions, HSA contributions, and student loan interest deduction. It does not include income that is tax-exempt (like municipal bond interest) or income already excluded before it reaches your W-2 (like employer health insurance premiums or pre-tax retirement contributions withheld directly from a paycheck — those are typically already excluded from Box 1 wages). This calculator asks for gross income and lets you subtract deductions yourself via the standard deduction and Additional Deductions fields, rather than asking you to pre-calculate taxable income, which most people don't know off the top of their head.
Why doesn't this calculator support Head of Household or Married Filing Separately?
Because at the time this calculator was built, the IRS's newsroom summary of the 2026 inflation adjustments published complete bracket tables for Single and Married Filing Jointly filers, but the Head of Household table was not available in a form we could verify directly from a primary IRS source in this session. Rather than estimate or copy those numbers from a secondary source and risk publishing an unverified figure on a tax calculator, we chose to ship a narrower but fully verified tool. Head of Household and Married Filing Separately support will be added once their 2026 bracket tables can be confirmed directly against IRS.gov.
How did the One, Big, Beautiful Bill Act change 2026 taxes compared to 2025?
The One, Big, Beautiful Bill Act (Public Law 119-21), signed into law July 4, 2025, made the seven-rate bracket structure created by the 2017 Tax Cuts and Jobs Act (10%, 12%, 22%, 24%, 32%, 35%, 37%) permanent, rather than letting it expire and revert to the older, higher pre-2018 rate structure at the end of 2025 as originally scheduled. In practical terms, this means the RATES for 2026 are identical to recent years — what moved for 2026 is only the dollar thresholds at which each rate begins, which the IRS re-indexes for inflation every year regardless of any legislative changes. For 2026 those thresholds rose about 2.7% over 2025, consistent with the recent pace of inflation adjustments.
What does this calculator NOT include that could change what I actually owe?
This tool estimates federal income tax only. It does not include: FICA payroll tax (Social Security and Medicare withholding, roughly 7.65% for employees) — use Quanta's FICA tax calculator; self-employment tax if you work for yourself — use the self-employment tax calculator; capital gains tax on investment sales, which uses separate preferential rates — use the capital gains tax calculator; state or local income tax, which varies widely by state; the Alternative Minimum Tax, which affects a small number of high earners with specific deduction patterns; the Net Investment Income Tax (an additional 3.8% for high earners with investment income); or tax credits like the Child Tax Credit or Earned Income Tax Credit, which reduce your final bill dollar-for-dollar and are not modeled here. For estimated quarterly payments combining several of these factors, see the quarterly tax estimator.

References& sources.

  1. [1]Internal Revenue Service (2025). "IRS releases tax inflation adjustments for tax year 2026, including amendments from the One, Big, Beautiful Bill." IRS Newsroom, October 9, 2025.
  2. [2]Internal Revenue Service (2025). Revenue Procedure 2025-32.
  3. [3]Internal Revenue Service. Publication 501: Dependents, Standard Deduction, and Filing Information.
  4. [4]Internal Revenue Service. Publication 17: Your Federal Income Tax (For Individuals).
  5. [5]119th United States Congress (2025). H.R. 1, "One Big Beautiful Bill Act," Public Law 119-21 (signed July 4, 2025).
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