Sales Tax Calculator

Sales Tax Calculator

Original Amount ($):

Tax Rate (%):

Calculation Type:

Add TaxCalculate total after adding tax

Remove TaxCalculate amount before tax

Options

Show Detailed CalculationDisplay the step-by-step calculation process

Round ResultsRound to 2 decimal places (cents)

Calculation Result

Detailed Calculation:

Formula will appear here after calculation

Tax Information:

Perform a calculation to see information

Note: This tool calculates sales tax amounts with precision. For multiple tax rates, calculate each tax separately.

About This Sales Tax Calculator

This calculator computes sales tax amounts in both directions - adding tax to get the total price, or removing tax to find the pre-tax amount. It handles all calculations client-side without sending your data anywhere.

How to Use This Calculator

Step-by-Step Guide:

1. Step 1: Enter the original amount (before tax or including tax)
2. Step 2: Enter the tax rate percentage (e.g., 7.5 for 7.5%)
3. Step 3: Select whether to add or remove tax
4. Step 4: Choose calculation options
5. Step 5: Click "Calculate" to see results
6. Step 6: View formula, detailed steps, and tax information

Calculation Types:

• Add Tax: Calculates total price after adding tax to the original amount
• Remove Tax: Calculates the pre-tax amount from a total that includes tax

Example Calculations:

Add Tax: Original Amount: $100.00 Tax Rate: 7.5% Result: $107.50 Remove Tax: Total Amount: $107.50 Tax Rate: 7.5% Result: $100.00