Tax Calculators — 2026 Tax Year
31+ free in-browser calculators. No login, no data collection.
Everything runs locally in your browser. Last site review 2026-05-27.
Guidance, not advice. This calculator runs the rules as published, it doesn't assess your circumstances. Your actual tax may be affected by factors it doesn't cover (deductions, credits, filing status nuances, state-specific adjustments). Always seek financial or tax advice from a qualified CPA, Enrolled Agent, or tax attorney, or contact the IRS. Read our editorial scope →
Income & self-employment
Federal income, SE tax, and quarterly estimates.
Income Tax Calculator
2026 federal brackets, standard deduction, and effective rate.
Open calculator →Self-Employment Tax Calculator
Schedule SE: 12.4% SS to $184,500, 2.9% Medicare, 0.9% Additional Medicare.
Open calculator →Quarterly Estimated Tax Calculator
Form 1040-ES safe-harbour analysis with quarterly payment amounts.
Open calculator →Form 2210 Underpayment Penalty Calculator
§6654 penalty: safe-harbour check, quarter-by-quarter underpayment, and interest at 7% (Q1 2026).
Open calculator →Business structure
Entity choice, S-corp election, and owner compensation.
LLC vs S-Corp Analyzer
Breakeven analysis for the S-Corp election with state overlays and QBI interaction.
Open calculator →Salary vs Dividend Calculator
C-corp owner mix between W-2 salary and qualified dividends.
Open calculator →Should I Incorporate?
Sole prop vs LLC vs S-Corp vs C-Corp decision framework.
Open calculator →Reasonable Compensation Calculator
BLS OEWS-anchored salary range for S-corp owner-operators.
Open calculator →Deductions & credits
Schedule C deductions, §199A, AMT, and research credits.
Home Office Deduction Calculator
Simplified ($5/sq ft) vs actual-expense method for Schedule C.
Open calculator →QBI §199A Deduction Calculator
Permanent under OBBBA: thresholds, SSTB phase-out, W-2 / UBIA limits.
Open calculator →AMT Calculator
Form 6251: AMTI, exemption phase-out, and ISO bargain-element modeling.
Open calculator →R&D Tax Credit Calculator
§41 credit with regular method and ASC method comparison.
Open calculator →Investments & property
Capital gains, dividends, NIIT, real-property exchanges, and crypto.
Capital Gains Tax Calculator
Short- vs long-term, 0/15/20% brackets, §1250 recapture, and collectibles 28%.
Open calculator →Dividend Tax Calculator
Qualified vs ordinary dividends with bracket-based rates.
Open calculator →NIIT Calculator
§1411 3.8% surtax on investment income above MAGI thresholds.
Open calculator →1031 Exchange Calculator
Deferred gain, boot recognition, and basis for real-property exchanges.
Open calculator →Property Transfer Tax Calculator
State transfer tax + NYC RPTT/Mansion, Philly, and Chicago overlays.
Open calculator →Estate Tax Calculator
Federal $15M OBBBA exemption + 12 state estate-tax overlays.
Open calculator →Crypto Tax Calculator
LTCG, mining/staking at FMV, NFT 28%, and Form 1099-DA context.
Open calculator →Retirement
Contribution planning and Roth vs Traditional decisions.
State & international
Multi-state allocation, nexus, expat, and SALT-cap workarounds.
State Tax Comparison
All 50 states + DC: income tax, SE conformity, and reciprocity.
Open calculator →Multi-State Allocation
Per-state sourcing rules, convenience-of-employer, and 183-day residency.
Open calculator →Wayfair Nexus Calculator
Per-state economic nexus thresholds for sales tax registration.
Open calculator →FTC vs FEIE Calculator
Expat decision: Foreign Tax Credit vs Foreign Earned Income Exclusion.
Open calculator →PTET Analyzer
Pass-through entity tax workaround for the federal SALT cap, 36+ states.
Open calculator →OBBBA 2025 provisions
Temporary OBBBA exclusions and deductions (2025–2028).
No Tax on Tips Calculator
OBBBA §224 exclusion up to $25,000/yr through 2028 (FICA still applies).
Open calculator →No Tax on Overtime Calculator
FLSA overtime premium exclusion: $12,500 single / $25,000 MFJ.
Open calculator →Senior Bonus Deduction Calculator
$6,000 single / up to $12,000 MFJ bonus standard deduction for filers 65+.
Open calculator →Other
Corporate tax and OBBBA car-loan interest deduction.