🧾 Tax Calculator
Reverse Sales Tax Calculator
Enter the total price you paid (tax included) to instantly find the original pre-tax amount and the exact tax portion.
🧾 Enter Tax Details
$
%
Quick-pick common rates
0% (No Tax)
5%
6%
7%
8%
TX 8.25%
CA 8.5%
10%
VAT 20%
📋 Receipt Breakdown
📋 Price Analysis
🏥 Price before tax—
📋 Tax amount—
📌 Tax rate—
💰 Total paid (inc. tax)—
Enter a total amount and tax rate, then click Calculate to see the breakdown.
What is a Reverse Sales Tax Calculator?
A reverse sales tax calculator determines the original price of a product or service before sales tax was applied. You provide the final price (tax-inclusive) and the tax rate — and it extracts the exact tax portion to reveal the pre-tax price.
Reverse Tax Formula
Pre-Tax Price = Total Price ÷ (1 + Tax Rate / 100)
Tax Amount = Total Price − Pre-Tax Price
Example: $107.00 total ÷ (1 + 7/100) = $100.00 pre-tax · Tax = $7.00
Tax Amount = Total Price − Pre-Tax Price
Example: $107.00 total ÷ (1 + 7/100) = $100.00 pre-tax · Tax = $7.00
How to Use This Calculator
- Enter the total amount paid (including tax).
- Enter the sales tax rate — or use a quick-pick button.
- Click Calculate to instantly see the pre-tax price, tax amount, and a visual split.
Common US Sales Tax Rates
| State | State Rate | Avg with Local Tax |
|---|---|---|
| California | 7.25% | ~8.5% |
| Texas | 6.25% | ~8.25% |
| New York | 4.0% | ~8.52% |
| Florida | 6.0% | ~7.0% |
| Washington | 6.5% | ~9.23% |
| Oregon / Montana / Delaware | 0% | 0% (no sales tax) |
Benefits for Businesses & Individuals
For Businesses
- Accurate pricing — understand profit margins by separating tax from revenue.
- Simplified tax reporting — quickly identify the taxable base amount.
- Error prevention — avoid overcharging or undercharging customers.
For Individuals
- Transparency — see exactly how much of your payment went to taxes.
- Informed shopping — compare true prices across different tax jurisdictions.
- Reimbursements — accurately calculate pre-tax amounts for expense reports.
Frequently Asked Questions
Yes — enter the total cash paid and the applicable tax rate to instantly find the pre-tax amount.
Combine all rates into one total. For example: state 6% + local 2% = 8%. Enter 8% in the calculator.
Yes. VAT is calculated the same way. Enter the VAT-inclusive price and the VAT rate to find the pre-VAT price.
Yes, for any country. Just enter the applicable tax rate (GST, VAT, HST, etc.). The formula is universal.
Tax-inclusive: the displayed price already includes tax (common in Europe/Australia). Tax-exclusive: tax is added at checkout (common in the US). This calculator handles tax-inclusive totals.