India GST Calculator & Rate
Add Indian GST to a net price or take it out of a gross (tax-inclusive) amount, with India's verified slab rates (5%, 18%, 40%) preloaded. All math runs locally in your browser.
India GST calculator
Type an amount into any of the three boxes; the other two follow at the rate you pick.
GST = 100.00 × 5% = 5.00; gross = 100.00 + 5.00 = 105.00
Worked in whole cents: the tax is rounded to the nearest cent (half a cent goes up) and the other amount is the difference, so the boxes always add up. From a gross amount the tax is gross × rate ÷ (100 + rate); from a typed tax amount the net is worked back and your tax amount stays as typed. Your tax authority may set its own rounding rules for invoices.
How much is GST in India?
India has no single GST rate; the rate depends on the goods or service supplied. The rates are 0% / 5% merit / 18% standard / 40% special de-merit. Source: GST Council / PIB (Govt of India), verified 2026-09-25.
GST Council (56th meeting, PIB release): from 22 September 2025 a two-rate structure, an 18% standard rate and a 5% merit rate, plus a special 40% de-merit rate for a select few goods and services. From 1 February 2026 pan masala, tobacco (other than bidis), cigarettes and nicotine inhalation products moved to 40% and bidis to 18% (GST Council newsletter, December 2025).
India GST worked examples
Add GST: gross = net × (1 + rate ÷ 100). Extract GST: tax = gross × rate ÷ (100 + rate), and net = gross − tax.
| Rate | Tax share of a gross price | Net 100 → tax / gross | Net 1,000 → tax / gross | Gross 100 → tax / net | Gross 1,000 → tax / net |
|---|---|---|---|---|---|
| 5% | 5/105 ≈ 4.7619% | 5.00 / 105.00 | 50.00 / 1,050.00 | 4.76 / 95.24 | 47.62 / 952.38 |
| 18% | 18/118 ≈ 15.2542% | 18.00 / 118.00 | 180.00 / 1,180.00 | 15.25 / 84.75 | 152.54 / 847.46 |
| 40% | 40/140 ≈ 28.5714% | 40.00 / 140.00 | 400.00 / 1,400.00 | 28.57 / 71.43 | 285.71 / 714.29 |
Issuing a GST-compliant invoice?
Rates are only half of it — what must appear on the invoice (tax numbers, rate per line, reverse-charge wording for cross-border B2B) is covered in the VAT & GST invoicing guide, and the free VAT invoice generator produces a compliant PDF. The full rate dataset behind this page (42 jurisdictions, source per row) is downloadable: CSV · JSON (CC BY 4.0).
India GST FAQ
What is the GST rate in India in 2026?
India has no single GST rate; the rate depends on the goods or service supplied. The rates are 0% / 5% merit / 18% standard / 40% special de-merit. Source: GST Council / PIB (Govt of India), verified 2026-09-25. Rates change, so confirm against the linked source before filing anything.
How do I add GST to a net price?
Multiply the net amount by (1 + rate ÷ 100). At 5%, a net price of 100.00 becomes 105.00 gross, of which 5.00 is GST. The calculator on this page does it at the slab you choose.
How do I work out the GST included in a gross price?
Multiply the gross (tax-inclusive) amount by rate ÷ (100 + rate), then subtract the result to get the net price. At 5% the share is 5/105 (about 4.7619%): a gross price of 100.00 contains 4.76 GST and 95.24 net. Type the gross amount into the calculator's gross box to do this for any amount.
Where does this rate come from?
Every rate in our dataset cites the source it was checked against. For India, that is GST Council / PIB (Govt of India) (linked on this page), verified on 2026-09-25. The full 42-jurisdiction dataset is downloadable under CC BY 4.0, and every verification pass is logged in our public changelog.
Not tax advice. Rates and rules change; the verification date above tells you when we last confirmed this figure, not that it is still current today. Confirm against the linked official source before filing or invoicing.