Reverse Sales Tax Calculator

Calculate the pre-tax price from total amount paid – quick, easy, and accurate!

Calculator

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Results

Enter values and calculate to see results

Current Tax Rates Database

🇺🇸 United States

California7.25%
New York8.00%
Texas6.25%
Florida6.00%
Washington6.50%

🇨🇦 Canada

Ontario (HST)13.00%
British Columbia12.00%
Quebec14.975%
Alberta (GST)5.00%
Nova Scotia15.00%

🇪🇺 Europe

Germany19.00%
France20.00%
UK20.00%
Spain21.00%
Italy22.00%

How it Works

Step 1: Input Total Price

Enter the final amount you paid including tax

Step 2: Enter Tax Rate

Input the sales tax percentage for your region

Step 3: Calculate

Our tool calculates the pre-tax price using the formula:

Pre-tax Price = Total Price ÷ (1 + Tax Rate)

Business Use Cases

Expense Reporting

Separate business expenses from tax amounts for accurate accounting

Price Comparison

Compare actual product costs across different tax jurisdictions

Invoice Processing

Process bulk invoices and separate tax components efficiently

Financial Analysis

Analyze true product costs for better business decisions

Export & Save

Need more help?

Get Connected With a Certified Tax Professional or Accountant in Your Area

Fill the Form

Why Use This Tool?

Save Time: No manual calculations needed.

Accuracy: Built with tested formulas.

Customizable: Choose tax rates for U.S. states, Canadian provinces, EU countries, and more.

Multiple Modes: Single entry, bulk calculation, or side-by-side comparisons.

Business-Ready: Export results to CSV CSV or print for records.

Common Use Cases

Shoppers: Check how much of your purchase went toward sales tax.

Small Businesses: Reconcile invoices, receipts, or bulk sales data.

Freelancers/Contractors: Separate taxable and non-taxable amounts for bookkeeping.

Accountants: Cross-verify tax entries in client financial records.

Important Notes & Disclaimer

While this tool is designed for accuracy, tax laws can vary by region and may change over time. Please:

  • Verify the correct sales tax rate for your location.
  • Use the calculator as a reference, not as a substitute for professional tax advice.
  • For complex cases (e.g., mixed rates, exemptions, surcharges), consult a licensed tax professional.

About This Tool

At Reverse Sales Tax Calculator, we’re a team of finance enthusiasts who got tired of doing reverse sales tax math by hand. Our mission is to make financial calculations fast, accurate, and effortless for everyone—whether you’re a student, shopper, business owner, or accounting professional.

By eliminating manual errors and saving time, our free tools empower you to make smarter financial decisions. We believe financial clarity should be accessible to all.

    FAQ

    What is reverse tax calculation?
    It is calculating the original, pre-tax price and the tax amount when you only know the final total price (including tax) and the tax rate.
    What is reverse taxation?
    This term typically refers to the Reverse Charge Mechanism (common in VAT/GST systems), where the buyer (recipient of goods/services) is responsible for calculating and remitting the tax to the tax authority, instead of the seller.
    How to calculate reverse tax formula?
    Pre-tax Price = Total Price ÷ (1 + Tax Rate as a Decimal). For example, for a 7% tax, divide the Total Price by 1.07.
    How to calculate reverse calculation?
    Use the formula: Pre-tax Price = Total Price ÷ (1 + Tax Rate as a Decimal). Then, subtract the Pre-tax Price from the Total Price to find the tax amount.