Tax & Income Calculators

Tax & income calculator

Estimate Your Federal Income Tax

Organize income, adjustments, deductions, credits, and withholding into a transparent 2026 federal tax estimate. See AGI, taxable income, effective rate, marginal rate, refund, or amount owed.

2026 enginetax year shown clearly
Progressivebrackets, not one rate
Private by designcalculated in your browser
Estimated federal resultAwaiting inputs
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Enter your information below. No sample tax result is displayed.

Build your tax profile

Use your tax documents or best current estimates. Leave irrelevant income categories at zero. The calculator does not determine eligibility for credits or deductions.

Filing information

This version uses 2026 federal brackets and standard deductions.
Enter a whole number from 0 to 30.
Count is shown for context; no credit is auto-assumed.
Enter a whole number from 0 to 30.

Income

Enter a non-negative amount.
Enter a non-negative amount.
Enter a non-negative amount.
Enter a non-negative amount.
Enter a non-negative amount.
For simplicity, this estimate does not apply qualified-dividend or long-term capital-gain rates.
Enter a non-negative amount.
Enter a non-negative amount.
Enter a non-negative amount.

Withholding

Enter a non-negative amount.
Use your W-2 or pay-stub federal income-tax withholding.
Enter a non-negative amount.
Enter only a credit amount you have separately determined may apply.
Refund or amount owed is withholding compared with estimated final federal income-tax liability.
Advanced tax details

Adjustments

Enter a non-negative amount.
Enter a non-negative amount.
Enter $0 to $2,500.

Deductions

Deduction method choose one
Enter a non-negative amount.
The engine uses this only when Itemized is selected.

Credits

Enter a non-negative amount.
Enter a non-negative amount.
Do not enter a maximum automatically; eligibility and phaseouts vary.
Enter a non-negative amount.
All results calculate in your browser. No income data is sent to a server.

Your estimated federal tax position

No sample result is displayed. Calculate after entering your own figures.

Tax engine: 2026
Estimated federal result
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Enter your information to estimate federal tax, withholding, and refund or amount owed.

Tax calculation flow

Gross income to taxable income to final liability

Tax and credit detail

Progressive tax before and after entered credits

MeasureAnnual estimateExplanation
Important: This calculator is an educational estimate using the displayed 2026 federal assumptions. It is not an official IRS determination, tax return, or substitute for professional advice. It does not model every credit, phaseout, tax preference, state tax, qualified-dividend rate, long-term capital-gain rate, AMT, or filing circumstance.

How the Tax & Income Calculator works

The estimate separates income, adjustments, deductions, tax, credits, and withholding so the result is easier to audit.

How to use this calculator

  1. Select the 2026 tax year and filing status.
  2. Enter income categories from your records.
  3. Add adjustments such as eligible IRA, HSA, or student-loan interest amounts.
  4. Choose standard or itemized deductions.
  5. Enter only credits you have separately determined may apply.
  6. Enter federal withholding from your W-2 or pay stubs.
  7. Review tax, AGI, taxable income, rates, and refund or amount owed.

Gross income, AGI, and taxable income

Total income is the sum of the categories entered. Adjusted gross income is total income after the supported adjustments. Taxable income is AGI after the selected deduction.

The calculator does not treat every possible tax preference as supported. It shows the inputs it includes and warns where a result is simplified.

Progressive brackets and tax rates

Federal income tax uses layers. The marginal rate applies only to the next layer of taxable income, not to the entire income amount. The effective rate is federal tax after nonrefundable credits divided by total income in this simplified view.

Bracket and standard-deduction values are centralized in the JavaScript configuration and labeled for tax year 2026.

Refunds and amounts owed

A refund estimate is calculated when entered federal withholding is higher than estimated final federal income-tax liability. An amount owed is shown when withholding is lower. This does not include every payment, credit, or filing adjustment that could affect a return.

A refund is not automatically a sign that a household saved money; it can also reflect over-withholding during the year.

Benefits of using a tax calculator

  • Estimate federal tax before filing.
  • Understand AGI and taxable income.
  • Compare deduction choices.
  • Test how income changes may affect tax.
  • Review marginal and effective rates.
  • Plan withholding conversations with better context.

Pros and limitations

Pros: fast estimates, immediate scenario testing, a visible tax breakdown, and no installation.

Limitations: estimates are not tax returns, complex credits and deductions may require eligibility tests, tax laws can change, and state/local analysis is outside this federal-focused tool.

Tax & income FAQs

Clear context for interpreting a federal tax estimate.

What is a Tax & Income Calculator?
It is a planning tool that estimates federal income tax from entered income, adjustments, deductions, credits, and withholding. It is not an official tax return.
What is the difference between gross income and taxable income?
Gross income is the total of the income categories entered. Taxable income is generally what remains after supported adjustments and the selected deduction are applied.
How is federal income tax calculated?
This calculator applies progressive 2026 federal brackets to taxable income. It then subtracts entered nonrefundable credits, while refundable credit estimates are shown separately in the refund calculation.
What is AGI?
Adjusted gross income is total income after eligible adjustments included in the estimate. It is not the same as taxable income because deductions are applied after AGI.
What is the standard deduction?
The standard deduction is a fixed deduction based on filing status. This calculator uses the displayed 2026 values and compares them with the itemized amount you enter.
Should I choose standard or itemized deductions?
Use the method supported by your situation and records. The calculator transparently shows which method was selected and the amount used, but it does not determine itemized-deduction eligibility.
What is a marginal tax rate?
It is the tax rate applied to the next dollar of taxable income in the progressive bracket schedule. It is not the rate applied to every dollar.
What is an effective tax rate?
In this simplified display, it is estimated federal income tax after entered nonrefundable credits divided by total income. Other definitions may use a different denominator.
How does withholding affect a refund?
Withholding is money already sent toward federal income tax during the year. If entered withholding exceeds the estimated liability, the difference is shown as a possible refund; if it is lower, the difference is shown as a possible amount owed.
Does a refund mean I made money?
No. A refund generally means more was paid in during the year than the estimated final liability. It is a reconciliation of withholding and tax, not a measure of investment return.
Does this calculator include state income tax?
No. This page focuses on federal income tax. State and local rules vary and should be evaluated separately.
Can I enter self-employment income?
Yes, as a taxable income category. The tool does not fully model Schedule C expenses, self-employment tax, estimated-tax payments, or every business adjustment.
Can I enter capital gains and dividends?
Yes, but the simplified engine treats the entered amounts as ordinary taxable income. It does not apply qualified-dividend or long-term capital-gain rates.
Are tax credits automatically applied?
No. You enter credit amounts you have separately determined may apply. This avoids assuming eligibility for child, earned-income, education, or other credits.
Why can the result differ from my tax software?
Tax software can include more forms, phaseouts, tax preferences, filing details, state taxes, payroll taxes, credits, and document-level data than this focused estimator.
Is this an official IRS calculator?
No. It is an independent educational tool. The tax-year assumptions are sourced from official IRS and SSA materials, but the output is not an IRS determination.

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