FREE · ALL 50 STATES · NO SIGNUP
US Business Tax
Calculator
Pre-loaded official excise & sales tax rules for all 50 states — or build your own custom rules.
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51 Jurisdictions
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6 Tax Formulas
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Custom Rules
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CSV Export
Select a State
Choose a state to see available tax categories
Disclaimer: Pre-loaded rates are for reference only and may be outdated. Tax laws change frequently — always verify current rates with your state's official revenue department before filing. Use the to enter your own verified rates.
How to Use
1.Select any US state to load official tax rates
2.Category auto-selects — just enter your numbers
3.Hit Calculate and see instant results
4.Export to CSV for your records
Quick FAQ
Supported formulas?
% of cost/sale price, flat per unit, per mL, per weight, per pack
Can I add custom rules?
Yes — any category, formula, rate for any state
Is my data private?
100% — all calculations happen in your browser