Finance · Tax
Reverse GST Calculator
Extract GST from an inclusive price — net value and tax component, live as you move the sliders.
Reverse GST details
100 – 1 Crore
Common rates: 5 · 12 · 18 · 28
Net (pre-GST)
—
How this calculator works
Got a price that already includes GST — MRP sticker, restaurant bill, all-inclusive quote — and need the tax inside? Reverse GST peels the rate out so you see net taxable value and GST amount.
Same maths as inclusive mode on a normal GST calculator.
- Choose Remove GST (inclusive) or Add GST (exclusive).
- Enter the amount (₹100 – ₹1 Crore).
- Enter the GST rate.
- Read net, GST, and CGST/SGST/IGST reference — results update live.
Formula
GST = inclusive × rate / (100 + rate)
. net = inclusive − GST. Exclusive mode: GST = amount × rate/100.
Examples
More about this calculator
Practical use cases
Retailers back-calculating tax from MRP. Freelancers who quoted a round final fee. Buyers checking a vendor’s inclusive price.
Common mistakes
Multiplying inclusive price by 18% — that overstates tax. Mixing slabs on multi-rate bills.
Tips
Reverse each line at its own rate when slabs differ.
Important notes
Not tax advice. Confirm HSN/SAC rates before filing.
FAQs
Exclusive adds tax on a clean base. Reverse starts from an all-in figure and extracts tax.
For intra-state mental models, half of GST as CGST and half as SGST. IGST reference equals total GST.
Reverse each line at its own rate — not the grand total.