Tax Planning
Plan the bill before it arrives.
- 1.Estimate the annual bill
- 2.Fix your withholding
- 3.Add state tax
- 4.Plan quarterly payments
Tax Calculators
Income tax, sales tax, GST/VAT and payroll tax helpers.
41 free tax calculators — no signup, mobile-friendly, formulas verified by our editorial team.
Featured tax calculators
Tax
Home Sale Capital Gains Tax Calculator
Federal capital gains tax on a home sale with the IRC §121 $250k/$500k principal-residence exclusion.
Tax
Paycheck Calculator (US)
Take-home pay after federal, FICA, and state taxes.
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QBI (Section 199A) Deduction Calculator
20% qualified business income deduction with 2025 thresholds, SSTB and wage limits.
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RSU Tax Calculator
Federal, FICA, and state tax on vested RSUs with 22%/37% supplemental withholding.
All tax calculators
Tax
Home Sale Capital Gains Tax Calculator
Federal capital gains tax on a home sale with the IRC §121 $250k/$500k principal-residence exclusion.
Tax
Paycheck Calculator (US)
Take-home pay after federal, FICA, and state taxes.
Tax
QBI (Section 199A) Deduction Calculator
20% qualified business income deduction with 2025 thresholds, SSTB and wage limits.
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RSU Tax Calculator
Federal, FICA, and state tax on vested RSUs with 22%/37% supplemental withholding.
Tax
Alternative Minimum Tax (AMT) Calculator
2025 AMT exemption, 26/28% rates, and phase-out to see if you owe AMT.
Tax
Bonus Tax Calculator
IRS 22% supplemental method plus FICA and state on your bonus.
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Business Mileage Deduction Calculator
2025 IRS 70-cent standard mileage rate vs actual vehicle expenses.
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Capital Gains Tax Calculator
Short and long-term capital gains tax.
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Capital Loss Carryover Calculator
$3,000/yr ordinary offset under §1211(b) with ST/LT character preserved on carryforward.
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Effective Tax Rate Calculator
Effective vs marginal federal tax rate on your income.
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ESPP Gain Calculator
Qualified §423 ESPP: ordinary income vs. capital gain on qualifying and disqualifying dispositions.
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Estate Tax Calculator
2025 federal estate tax with $13.99M exemption, portability, marital and charitable deductions.
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Estimated Quarterly Tax Calculator
IRS Form 1040-ES quarterly payment for self-employed filers.
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FICA Tax Calculator
Social Security + Medicare withholding, including SECA for self-employed.
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Freelancer Tax Calculator
Self-employment tax estimator.
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FSA Calculator
Healthcare FSA tax savings under the 2025 IRS contribution limit.
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Gift Tax Calculator
2025 annual exclusion, lifetime unified credit and Form 709 filing check.
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Gratuity Calculator
Gratuity payable on retirement (India).
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GST Calculator
GST inclusive and exclusive amounts.
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Home Office Deduction Calculator
Compare the $5/sq ft simplified method against the actual expense method.
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HRA Exemption Calculator
House Rent Allowance tax exemption (India).
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Income Tax Calculator
Annual income tax across regions.
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Kiddie Tax Calculator
2025 Form 8615 tiers: $1,350 exempt, next $1,350 at child's rate, above $2,700 at parent's rate.
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Long-Term Capital Gains Calculator
0% / 15% / 20% federal LTCG plus 3.8% NIIT on assets held over a year.
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Medicare IRMAA Calculator
2025 Part B and Part D IRMAA surcharges by MAGI and filing status.
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Net Investment Income Tax (NIIT) Calculator
3.8% NIIT under IRC §1411 on the lesser of net investment income or MAGI over threshold.
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Net Unrealized Appreciation (NUA) Calculator
Compare the NUA election on employer stock against a straight IRA rollover, after tax.
Tax
Payroll Tax Calculator
Employer-loaded cost: FICA match, FUTA and SUTA on top of gross wages.
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Qualified Dividends Tax Calculator
2025 preferential 0/15/20% rates on qualified dividends plus 3.8% NIIT stacking.
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Retirement Tax Calculator
Federal tax on Traditional, Roth, Social Security and pension income.
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Sales Tax Calculator
Add or remove US sales tax from a price.
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Section 179 Deduction Calculator
First-year equipment expensing with 2025 limits, bonus depreciation and MACRS.
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Self-Employment Tax Calculator
15.3% SE tax (Social Security + Medicare) for freelancers and 1099 workers.
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Severance Pay Calculator
Weeks-of-pay severance with 22% supplemental federal, FICA and state withholding.
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Short-Term Capital Gains Calculator
Federal tax on assets held one year or less, stacked on ordinary income.
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State Income Tax Calculator
Top marginal state income tax across all 50 states plus DC (2025).
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Stock Options (ISO/NSO) Tax Calculator
ISO AMT preference vs. NSO ordinary income at exercise, with cost basis and FICA breakdown.
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Tax-Loss Harvesting Calculator
Federal tax saved by harvesting losses against gains and $3,000 of ordinary income.
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Trust Distribution Calculator
Model trust distributions, distributable net income and what is taxable to beneficiaries versus the trust.
Tax
VAT Calculator
VAT inclusive and exclusive prices.
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W-4 Withholding Calculator
Federal tax withheld per paycheck using 2025 IRS brackets.
Popular in tax
Tax
Alternative Minimum Tax (AMT) Calculator
2025 AMT exemption, 26/28% rates, and phase-out to see if you owe AMT.
Tax
Bonus Tax Calculator
IRS 22% supplemental method plus FICA and state on your bonus.
Tax
Business Mileage Deduction Calculator
2025 IRS 70-cent standard mileage rate vs actual vehicle expenses.
Tax
Capital Gains Tax Calculator
Short and long-term capital gains tax.
Tax
Capital Loss Carryover Calculator
$3,000/yr ordinary offset under §1211(b) with ST/LT character preserved on carryforward.
Tax
Effective Tax Rate Calculator
Effective vs marginal federal tax rate on your income.
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Who should use these tax calculators
Built for U.S. U.S. federal and state tax decisions, with documented formulas and primary-source references.
- W-2 employees tuning Form W-4 withholding
- Freelancers and contractors planning quarterly estimated payments
- Investors estimating short- and long-term capital gains tax
- Households comparing marginal and effective tax rates
Decision guides
Ordered calculator paths for the decisions this category supports.
Tax learning path
Start where you are. Each level builds on the tools above it.
Beginner
Understand what comes out of a paycheck.
Intermediate
Control withholding and self-employment obligations.
Advanced
Plan around gains, conversions and state exposure.
Common tax mistakes
What we see people get wrong most often — and the correction.
- Treating the top bracket as the whole rate
- U.S. brackets are marginal. Your effective rate is almost always materially lower.
- Forgetting self-employment tax
- Self-employed filers owe both halves of FICA on net earnings — roughly 15.3% before income tax.
- Missing quarterly deadlines
- The IRS charges underpayment penalties even when you settle up in April.
- Ignoring state tax
- State treatment varies enormously and can change a relocation or job-offer decision.
Latest resources
Explainers and guides from our education hub.
How we keep these calculators trustworthy
Editorial review, documented methodology and primary U.S. sources.
- Editorial policyWho writes and reviews our tools.
- Calculator methodologyHow each formula is chosen and documented.
- How we verify formulasKnown-answer tests against published examples.
- How we test accuracyAutomated regression suite on every release.
- Sources & referencesIRS, CFPB, SSA, HUD, VA, CMS, FDIC, FINRA, Treasury, DOL.
- Financial disclaimerEstimates for education, not financial advice.
Official Sources & References
The formulas, rates and definitions used by this calculator are aligned with the following official sources:
- Internal Revenue Service (IRS) — U.S. federal tax brackets, standard deduction, retirement contribution limits.
- IRS — Tax Withholding Estimator & Pub. 15-T — Official federal withholding and payroll tax methodology.
- Social Security Administration — Payroll Tax Rates — FICA, Social Security wage base and Medicare rates.
- U.S. Department of the Treasury — Federal tax policy, credits and inflation-adjusted thresholds.
We use only primary sources — regulators, standards bodies and scheme operators. See our full sourcing policy for details. Sources & References Policy · Calculator Methodology · How We Verify Formulas