Sales Tax Calculator

Calculate total cost including tax or pre-tax amount

Settings

Calculation Type Add Tax to Amount (Calculate Total) Subtract Tax from Total (Calculate Pre-Tax Amount)

Amount ($)

$

Total Amount ($)

$

Rounding Method No rounding Round to nearest cent Round up to nearest cent Round down to nearest cent Round to nearest 5 cents Round to nearest 10 cents

Tax Rates

Current Tax Rates

No tax rates added

Add multiple tax rates if applicable (e.g., state + local tax)

Results

Original Amount

$0.00

Tax Amount

$0.00

Total Amount

$0.00

Effective Tax Rate

0%

Tax Breakdown

Tax Rate	Tax Amount	Percentage of Total

Calculation History

Click on any item to reload it

About This Sales Tax Calculator

This advanced sales tax calculator helps you determine the total cost of an item including sales tax or calculate the pre-tax amount when you know the total price. It supports multiple tax rates (like state and local taxes combined) and various rounding methods to match real-world scenarios.

How to Use

1. Select whether you want to add tax to an amount or subtract tax from a total
2. Enter the dollar amount
3. Add one or more tax rates (e.g., 6.25% state tax + 2% local tax)
4. Choose your preferred rounding method
5. Click "Calculate" to see the results

Tips

• Use the "Add Tax to Amount" mode when you know the base price and want to find out the total cost with tax
• Use the "Subtract Tax from Total" mode when you know the final price and want to find out the pre-tax amount
• For multiple tax jurisdictions, add each tax rate separately
• The calculator automatically saves your last 10 calculations
• Click on any history item to reload it into the calculator