Reverse Sales Tax Table: Pre-tax price by Total price (tax included)
Reference table of pre-tax price for Reverse Sales Tax across a range of total price (tax included) values — exact, engine-computed figures you can read off at a glance.
Reverse Sales Tax Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Pre-tax price
₹1,000.00
- Tax amount
- ₹180.00
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Reverse Sales Tax Calculator
The Reverse Sales Tax Calculator works out your pre-tax price, along with 1 related figure in an instant. Enter total price (tax included) and tax rate and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the total price (tax included).
- Enter the tax rate.
- Read off your pre-tax price, together with tax amount — the calculator updates automatically, with no button to press.
Formula
The Reverse Sales Tax Calculator uses the formula:
Pre-tax price = Total price (tax included) ÷ (1 + Tax rate ÷ 100)
Worked example
For example, with total price (tax included) of 1,180 and tax rate of 18%, the pre-tax price is ₹1,000.00.
| Total price (tax included) | 1,180 |
|---|---|
| Tax rate | 18% |
| Pre-tax price | ₹1,000.00 |
|---|---|
| Tax amount | ₹180.00 |
Results are estimates for educational use, not professional advice.
Frequently asked questions
Divide the tax-inclusive price by 1 plus the tax rate as a decimal. 1,180 at 18% tax has a pre-tax price of 1,000.
The tax was added to the smaller pre-tax base, so subtracting the rate from the total understates the pre-tax price. Dividing is correct.
Any single-rate tax added to a price, such as GST, VAT or sales tax.
Subtract the pre-tax price from the total. Here 1,180 − 1,000 leaves 180 of tax.
The Reverse Sales Tax Calculator uses the formula: Pre-tax price = Total price (tax included) ÷ (1 + Tax rate ÷ 100). For example, with total price (tax included) of 1,180 and tax rate of 18%, the pre-tax price is ₹1,000.00.
Enter the total price (tax included). Enter the tax rate. Read off your pre-tax price, together with tax amount — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Reverse Sales Tax: Formula, Steps & Examples
Learn how to calculate Reverse Sales Tax — the formula explained step by step, with worked examples and a free calculator to check your answer.