GST Calculator
India GST — add or extract Goods & Services Tax from an amount. Supports all GST slabs (0/5/12/18/28%).
Result
- Base amount₹10,000.00
- GST @ 18%₹1,800.00
- CGST (Central)Half of GST goes to Central Government (intra-state)₹900.00
- SGST (State)Other half goes to State Government (intra-state)₹900.00
- Total (incl. GST)₹11,800.00
Personal-finance essentials
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How to use this calculator
- Choose mode: Add GST (starting from pre-tax) or Extract GST (starting from GST-inclusive total).
- Enter the amount.
- Choose the GST rate applicable to your goods or service.
- Read the base, GST amount, CGST + SGST split, and total.
About this tool
GST (Goods and Services Tax) replaced most indirect taxes in India from July 2017 — VAT, service tax, excise, octroi and more. There are 4 main slabs: 5%, 12%, 18%, 28%, plus 0% for essentials. Intra-state supply splits GST equally into CGST (Central) and SGST (State). Inter-state supply uses IGST (Integrated). This calculator handles both add-GST (base to total) and extract-GST (invoice total back to base) for any of the 5 slabs. Useful for freelancers issuing invoices, buyers verifying receipts, and small businesses reconciling GSTR filings.
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