Reverse GST Calculator
Extract GST from a total (tax-inclusive) amount and find the original base price.
Reverse GST Calculator
Auto-calculates as you type
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Intra-State: Within same state → CGST + SGST
Inter-State: Different states → IGST
Inter-State: Different states → IGST
Enter an amount to see the GST breakdown
What is Reverse GST Calculation?
Reverse GST calculation (also called GST exclusive calculation) helps you find the original price before GST was added. This is useful when you have a bill amount that includes GST and you want to know the actual product/service cost.
Formula:
Base Amount = Total Amount ÷ (1 + GST Rate / 100)
GST Amount = Total Amount − Base Amount
When Do You Need Reverse GST Calculation?
When you receive an invoice with GST included in the total
When filing GST returns and need to separate tax from sales
When comparing pre-tax prices of different products
When claiming Input Tax Credit (ITC)