Income Tax Calculator

How this result is built

Estimate 2026 US federal income tax from ordinary brackets and the standard or itemized deduction.

Federal income tax is computed on taxable income, which is gross income minus the deduction. For 2026 the standard deduction is $16,100 for single and married filing separately, $32,200 for married filing jointly, and $24,150 for head of household. The brackets start at 10% and rise to 37%.

What the opening example is for

The estimate stops there on purpose. It does not apply the child tax credit, the earned income credit, AMT, the net investment income tax, or state tax. Those change the bill. They should not be invented inside a generic calculator. Bracket figures follow IRS Rev. Proc. 2025-32 and the IRS 2026 inflation release.

The walkthrough below uses the numbers already sitting in Income Tax Calculator. Press Calculate and the headline should match this page. Then put your own figures in. The math does not run until you press the button, and Clear hides the result.

What each field is doing

The “Filing status” line on Income Tax Calculator starts at Single. Leave that figure only when it matches the statement, the quote, or the plan you are testing. Press Calculate after the edit so the chart and the schedule move with it.

Income Tax Calculator treats “Gross income” as its own entry, and the form opens with $88,000.00. A round example is useful for learning the page. It is a poor substitute for the number on your own paperwork, so replace it and run the form again.

The remaining fields

Before you replace it, “Deduction” reads 2026 standard deduction on Income Tax Calculator. The other fields stay put while you change this one. That is the clean way to see what this line is doing inside the result.

Look at “Itemized deductions” first if you are checking Income Tax Calculator: the filled value is $0.00. If the label is a rate, type the annual figure the contract uses. If it is money, type the amount that will actually move, not a rounded hope.

The opening result, line by line

Press Calculate on the opening form and Estimated federal income tax is $10,530.00. That is the number the rest of this section is talking about.

Deduction is $16,100.00 when you run the opening figures on Income Tax Calculator. That line is part of the same calculation as the headline. It is not a second balance you can spend on top of the result. Change one input and press Calculate if you want to see whether this line moves.

On this opening pass, taxable income is $71,900.00. That line is part of the same calculation as the headline. It is not a second balance you can spend on top of the result. Change one input and press Calculate if you want to see whether this line moves.

Income Tax Calculator reports that marginal rate is 22.00%. That line is part of the same calculation as the headline. It is not a second balance you can spend on top of the result. Change one input and press Calculate if you want to see whether this line moves.

How those lines were produced

Effective rate on gross income is 11.97% when you run the opening figures on Income Tax Calculator. That line is part of the same calculation as the headline. It is not a second balance you can spend on top of the result. Change one input and press Calculate if you want to see whether this line moves.

2026 ordinary brackets and the standard deduction. Credits, AMT, NIIT, and state tax are not applied.

The formula line on the page is Tax = Σ (income inside each bracket × that bracket’s rate). It is there so you can see the relationship the buttons are using. A schedule, when the page draws one, is that same series written row by row.

A second pass changes only “Gross income”, from $88,000.00 to $96,800.00. Estimated federal income tax moves from $10,530.00 to $12,466.00. Nothing else on the form was edited, so the gap between those two results is the effect of that one field on Income Tax Calculator. If the gap is tiny, this page is not very sensitive to that entry. If the gap is large, get that entry from a document before you plan around the result.

What this page will not claim

Income Tax Calculator is a federal estimate from the brackets and inputs written on the page. It is not a tax return. Credits, state tax, and items you do not type are simply absent. Confirm the figure with a filing source before you send money.

Income Tax Calculator stops at its own formula. When the next question is different, open Tax Bracket Calculator (Marginal rate, and the tax inside each slice.); Take-Home Paycheck Calculator (Gross check to estimated take-home.); Marriage Tax Calculator (Two single bills versus one joint bill.). Do not add those results to this one as if they were the same kind of dollar.

Check the result before you use it

Start on Income Tax Calculator by reading the labels, not the headline. The opening labels are Filing status (Single), Gross income ($88,000.00), Deduction (2026 standard deduction), Itemized deductions ($0.00). If a label is not the fact you have, the result cannot turn into that fact later. The illustration on the form lands on $10,530.00. When you press Calculate and see that same figure, the button and this explanation are using one formula.

Change one field at a time. Write down the headline, edit a single line, and press Calculate again. A large jump means that line carries the result. A line that does not move is a line the formula ignores, which is a reason to confirm you opened the right page. Income Tax Calculator is built for one job: 2026 federal brackets, without pretending to be a tax return. The description on the page says the same thing in a sentence: Estimate 2026 US federal income tax from ordinary brackets and the standard or itemized deduction.

When the paperwork disagrees

Then hold the headline next to a source outside the site. That source might be a loan estimate, an account statement, a pay stub, or the public limit named in the methodology. A few cents of difference on a long schedule is ordinary rounding. A different rate, a fee you never typed, or a tax the form does not ask for is not rounding. Correct the input. Do not average the page with the paperwork.

When the outside source still disagrees, Income Tax Calculator has reached the edge of what it will claim. It will not phone a lender, pull a county record, or apply a credit you left blank. Send the calculator name, every input, and the result you expected through the contact page if you think the formula itself is wrong. Until that is settled, read $10,530.00 as the output of the fields above and nothing else.

FAQs