GST Calculator: Add or Remove GST
Add GST to a price or remove it from a GST-inclusive price, with the CGST/SGST split.
Year-by-year table
How it works
Adding GST: GST = amount × rate ÷ 100. Removing GST from an inclusive price: GST = price × rate ÷ (100 + rate). Within a state the tax is split equally into CGST and SGST; between states it is charged as IGST.
Current slabs
Since the GST rate changes of September 2025, most goods and services fall into two main slabs, 5% and 18%, with 40% for a small list of luxury and sin goods. Gold stays at 3%. The old 12% and 28% slabs are kept here for past invoices.
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This is an estimate for planning only, not financial, tax or medical advice.