Reverse GST Calculator

↻ Updated 2026

Enter a GST-inclusive price and rate to find the net (pre-GST) amount and the exact GST component, split into CGST and SGST.

Educational calculators — always consult a licensed professional before making financial decisions.

Your inputs

Gross amount (incl. GST)

₹

The GST-inclusive price you paid

GST rate applied

GST 2.0 slabs: 0 / 5 / 18 / 40%

Net amount (excl. GST)

₹10,000

from ₹11,800 gross

GST component

₹1,800

at 18%

Share that is GST

15.3%

GST / gross

Gross split into net + GST

Net (excl. GST)₹10,000

GST₹1,800

Breakdown

Gross amount (incl. GST)₹11,800

CGST (9%)− ₹900

SGST / UTGST (9%)− ₹900

Total GST removed− ₹1,800

Net amount (excl. GST)₹10,000

ASSUMPTIONS — Reverse (back-calculation) formula: net = gross × 100 / (100 + rate). GST 2.0 slabs (0/5/18/40%, plus 3% on jewellery) are effective 22 Sep 2025. CGST and SGST/UTGST each carry half the GST for an intra-state supply; an inter-state supply carries a single IGST at the full rate.

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Sources & rate references

·GST Council (56th meeting) — GST 2.0 rate structure — Slabs 0/5/18/40% effective 22 Sep 2025

Rates, brackets and limits here are checked against primary sources. If a number still looks off, email support@realmoneyiq.com and we'll review and fix it.

RealMoneyIQ provides free educational calculators, not financial, tax, investment or legal advice. Results are estimates based on the assumptions you enter and publicly published rates; your actual outcome will differ. Always confirm decisions with a licensed professional who knows your full situation.