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1040 Tax Calculator (Tax Year 2026)

Estimate your 2026 federal income tax — the return you'll file in 2027 — using the official 2026 brackets and the $16,100 single / $32,200 joint standard deduction.

Inputs
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Estimates only. Adjust any value to recalculate instantly.

Results
Estimated refund $2,650 $6,350 total tax on $52,900 taxable income
Taxable income $52,900
Federal tax $6,350
Effective rate 8.5%
Refund $2,650
Income breakdown
Income breakdown Take-home: $69kFederal tax: $6.3k
  • Take-home $69k
  • Federal tax $6.3k

For 2026, the single standard deduction is $16,100 (personal exemptions have been $0 since 2018). Your effective rate of 8.5% is well below your top bracket of 22%, because only the top slice of income is taxed there.

How the 1040 tax calculator (tax year 2026) works

It estimates your 2026 federal income tax: it subtracts pre-tax adjustments and the greater of your itemized deductions or the $16,100 single / $32,200 joint standard deduction, applies the 2026 brackets (10% to 37%), and compares the tax to your withholding for a refund or balance due.

Worked example

Worked example: with gross income of $75,000, adjustments (401k, hsa, etc.) of $6,000 and federal tax withheld of $9,000, the 1040 tax calculator (tax year 2026) shows estimated refund of $2,650.

Taxable income
$52,900
Federal tax
$6,350
Effective rate
8.5%
Refund
$2,650

The formula

Taxable income = income − adjustments − max(itemized, 2026 standard deduction); 2026 tax from the 10–37% brackets; refund = withholding − tax.

Results are estimates for educational purposes and are not financial advice. Confirm exact figures with your lender, plan administrator or advisor.

Frequently asked

Questions about the 1040 tax calculator (tax year 2026)

What is the 2026 standard deduction?

For 2026 it is $16,100 for single filers and $32,200 for married filing jointly ($24,150 for head of household). Personal exemptions remain $0, as they have since 2018.

What are the 2026 tax brackets?

Seven rates — 10, 12, 22, 24, 32, 35 and 37% — with the top 37% rate starting at $640,600 of taxable income for singles and $768,700 for joint filers.

Does this include state tax or credits?

No. It estimates federal income tax only, before credits such as the child tax credit. State income tax, where it applies, is separate and varies widely by state.

Is the 1040 Tax Calculator (Tax Year 2026) free to use?

Yes. Every calculator on FinCalculators is completely free, with no sign-up, login or paywall. You can run as many scenarios as you like.

Reference data
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