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18% GST Calculator
18% GST applies to most goods and services — the standard rate, including electronics, restaurants in hotels above a tariff threshold, and professional services. Example: ₹1,000 + 18% GST = ₹1,180.00 (GST ₹180.00).
18% GST Calculator
Inter-state supplies charge the full amount as IGST instead of CGST + SGST.
Estimates for information only — not financial, tax or investment advice. Rates and rules change; confirm with an official source or a qualified professional. Disclaimer
How to calculate GST
Adding GST: GST = amount × rate ÷ 100; total = amount + GST.
Removing GST: base = total × 100 ÷ (100 + rate); GST = total − base.
Intra-state sales split GST equally into CGST and SGST; inter-state sales charge the full amount as IGST.
Current GST slabs (GST 2.0, from 22 Sept 2025)
- 5% — essentials and many daily-use goods
- 18% — the standard rate for most goods and services
- 40% — luxury and sin goods
- 3% gold & jewellery · 0.25% rough diamonds · nil-rated essentials
Rates for a specific item are set by CBIC notifications — check the official schedule for your HSN/SAC code.
18% GST on common amounts
| Amount (excl. GST) | GST @ 18% | Total (incl. GST) |
|---|---|---|
| ₹100 | ₹18.00 | ₹118.00 |
| ₹500 | ₹90.00 | ₹590.00 |
| ₹1,000 | ₹180.00 | ₹1,180.00 |
| ₹5,000 | ₹900.00 | ₹5,900.00 |
| ₹10,000 | ₹1,800.00 | ₹11,800.00 |
| ₹50,000 | ₹9,000.00 | ₹59,000.00 |
| ₹1,00,000 | ₹18,000.00 | ₹1,18,000.00 |