Reverse GST Calculator
Calculate original price from GST-inclusive amount
₹
%
Results
Original Price:
₹ 0.00
GST Amount:
₹ 0.00
Final Price:
₹ 0.00
Results copied to clipboard!
The Reverse GST Calculator is a tool that calculates the original price and GST amount from a GST-inclusive total. Users simply enter the final amount and select a GST rate (such as 5%, 12%, 18%, 28%, or a custom rate) to instantly determine the pre-tax price and the tax component. It includes instant calculation, preset rate options, a custom rate input, and a copy-to-clipboard feature for quick and convenient use.
Formula Used:

How to Use Reverse GST Calculator
- Enter Amount: Input GST-inclusive total (e.g., ₹120)
- Select GST Rate: Choose a preset rate (e.g., 18%) or enter a custom rate (e.g., 15%)
- View Results:
- Original Price (e.g., ₹101.69)
- GST Amount (e.g., ₹18.31)
- Final Price (e.g., ₹120.00)
Why Use Reverse GST Calculator?
Simplify tax calculations with the Reverse GST Calculator:
- Accurate Breakdowns: Calculates the original price and GST amount from GST-inclusive totals with precision
- Flexible Rates: Supports preset GST rates (5%, 12%, 18%, 28%) as well as custom rates for flexible use
- Ideal for GST Users: Perfect for businesses, shoppers, and accountants in India to quickly and accurately manage GST calculations without manual effort, ensuring clear and reliable tax breakdowns
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