Sales Tax Calculator
Calculate before tax and tax amount instantly
Use Add Tax for pre-tax value or Subtract Tax when entered value already includes tax.Input details
Results
Add TaxBefore Tax
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Tax Amount
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After Tax
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Sales Tax Formula by Method
1) Add Tax Method
Use this when entered value is the before-tax amount.
- Tax Amount = Value x (Tax% / 100)
- After Tax = Value + Tax Amount
- Before Tax = Value
2) Subtract Tax Method
Use this when entered value is the tax-inclusive (after-tax) amount.
- Before Tax = Value / (1 + Tax% / 100)
- Tax Amount = Value - Before Tax
- After Tax = Value