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Federal Income Tax Calculator by SmartAsset

Free#1 of 30 in Tax Calculators

Federal Income Tax Calculator by SmartAsset: A free web calculator for comparing estimated taxes and take-home pay. Ranked #1 of 30 in Tax Calculators by our editors (9.3/10); pricing: Free plan; best for U.S. taxpayers comparing take-home pay and tax.

9.3/10Editor score

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Federal Income Tax Calculator by SmartAsset9.3 Visit SmartAsset

At a glance

Editor score
9.3 / 10
Pricing
Free plan
Best for
U.S. taxpayers comparing take-home pay and tax
Free plan
Yes
Paid from
None
Calculator types
Federal, FICA, state and local income tax; take-home pay
Facts checked
5 Oct 2026

Where it wins
- Estimates federal, FICA, state and local income taxes
- Supports filing status, deduction, retirement and credit inputs
- Shows marginal and effective tax rates alongside annual take-home pay
Where it doesn't
- Provides estimates rather than tax-return filing
- Results may differ from actual tax outcomes
- Available on the web rather than as a listed native app

Our verdict on Federal Income Tax Calculator by SmartAsset

SmartAsset’s Federal Income Tax Calculator is a free web tool for people estimating taxes and take-home pay. It accepts household income, location and filing status, with choices for single, married filing jointly, married filing separately or head of household. It estimates federal income tax, FICA, and state and local income taxes, then presents tax breakdowns, marginal and effective rates, and estimated annual take-home pay. It is aimed at comparing an estimated paycheck outcome, not preparing or filing a tax return.

Its input range is useful for refining a comparison: users can choose a standard or itemized deduction and enter 401(k) or traditional IRA contributions. Advanced inputs include tax credits, dependent deductions and other pre-tax deductions. The calculator applies tax brackets to taxable income and uses location to estimate state and local taxes. This makes it a fit for taxpayers who want to see how filing status, deductions or retirement contributions affect an estimate, rather than a simple gross-to-net conversion.

SmartAsset says it updates tax rates and regulations annually; the page labels its displayed estimate as 2025 taxes. The company cautions that estimates are not guaranteed and may differ based on individual circumstances or tax-law changes. Treat the output as a planning reference, not a final tax liability. Taxpayers comparing take-home pay across locations or input choices may find the focused calculator useful; anyone who needs return preparation, filing, or a definitive calculation should choose a tax-filing service or consult a tax professional instead.

Federal Income Tax Calculator by SmartAsset pricing

Plans Free planFree Free to use — no paid tier required for the core job.

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Federal Income Tax Calculator by SmartAsset fact sheet

Free plan	Yes
Paid from	None
Calculator types	Federal, FICA, state and local income tax; take-home pay
Tax jurisdictions	Multiple
Income sources	Household income; retirement account contributions and other pre-tax deductions
Filing statuses	Single; married filing jointly; married filing separately; head of household
Tax years	2025
Platforms	Web
Deployment	Cloud
Platforms	Web
Support	Email
Built for	Solo (editorial estimate)
Pricing	Free plan
Website	smartasset.com
Facts checked	5 Oct 2026

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Featured on iTechGuides

Federal Income Tax Calculator by SmartAsset is listed in our Tax Calculators directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 5 Oct 2026 · How we research and update