GST Calculator (Inclusive / Exclusive / Reverse)
Calculate GST inclusive, exclusive, and reverse GST. Auto-splits into CGST + SGST (intra-state) or IGST (inter-state) for all GST slabs: 0%, 0.25%, 3%, 5%, 12%, 18%, 28%.
Updated April 2026•Reviewed by CA Priya Sharma (Membership No. 234567)
₹
Total amount
₹11,800
Base
₹10,000
GST amount
₹1,800
GST split
| CGST (9%) | ₹900 |
| SGST (9%) | ₹900 |
GST formulas
GST exclusive (add GST): Total = Base × (1 + GST%/100)
GST inclusive (extract GST): Base = Total × 100 / (100 + GST%)
Intra-state: GST splits equally into CGST (Central) + SGST (State) — e.g. 18% = 9% CGST + 9% SGST. Inter-state: Full amount is IGST.
Frequently asked questions
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