Sales Tax Calculator
Calculate sales tax for purchases based on local tax rates
Sales Tax Calculator
Results
Your sales tax calculation
Enter your information to calculate sales tax
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Sales Tax Formulas
1. From Pre-Tax Price
Tax = Pre-Price × (Rate / 100)
After Price = Pre-Price + Tax
2. From After-Tax Price
Pre-Price = After Price / (1 + Rate / 100)
Tax = After Price - Pre-Price
3. Find Tax Rate
Rate = ((After Price / Pre Price) - 1) × 100
Examples
Example 1: Calculate Price
Pre-tax price: $100, Tax rate: 8% → Tax: $8, Final price: $108
Example 2: Reverse Tax Calculation
After-tax price: $108, Tax rate: 8% → Pre-tax price: $100, Tax: $8
Example 3: Find Tax Rate
Pre-tax: $100, After-tax: $108 → Tax rate: 8%
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