Extract GST from a total price
Work backward from a GST-inclusive price to find the original base price and the tax amount.
The total price you actually paid or charged.
A standard slab or a custom rate.
The original price before tax, plus the tax amount.
Frequently asked
When would I need this instead of the GST Calculator?
When you only know the final, tax-inclusive price (for example from a receipt) and need to work out what portion was the base price versus tax.
How is the base price calculated?
Base price = total ÷ (1 + rate/100). It's the inverse of adding GST on top of a base price.
Can I use this on a full invoice total, not just one item?
Yes, if a single GST rate applies to everything, enter the combined total. For a mixed-rate invoice, reverse-calculate each rate group separately.
What if my receipt shows CGST and SGST separately already?
Add both together to get the total tax rate, then use that combined rate here. The tool doesn't split CGST/SGST automatically.
Does this work for a non-standard GST rate?
Yes, enter any custom rate, not just the standard slabs.
Why would a business need this, not just a consumer?
Businesses use it to back out the taxable value from a GST-inclusive price for accounting entries and input tax credit claims.