Add or remove GST at 5%, 12%, 18%, or 28% rates. Get instant CGST + SGST breakdown. Free for businesses, freelancers, and sellers.
5% — Essential goods | 12% — Processed food | 18% — Most services | 28% — Luxury goods
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| Form | Frequency | Due Date | Details |
|---|---|---|---|
| GSTR-1 | Monthly | 11th of next month | Outward supplies |
| GSTR-3B | Monthly | 20th of next month | Summary return + tax payment |
| GSTR-9 | Annual | 31st December | Annual return |
Every product/service in India has an HSN (Harmonized System of Nomenclature) code that determines its GST rate. Businesses with turnover above ₹5 crore must mention 6-digit HSN codes on invoices; others may use 4-digit codes. Search HSN codes on the official GST portal →
GST is a comprehensive indirect tax levied on the supply of goods and services in India. It replaced multiple cascading taxes like VAT, service tax, and excise duty. GST has four main rates: 5%, 12%, 18%, and 28%, plus a 0% rate for exempt goods like fresh vegetables and grains.
India has four main GST slabs: 5% (essential goods, e.g. edible oil, sugar, tea), 12% (processed food, mobile phones, butter), 18% (most services, restaurants, IT services, capital goods) and 28% (luxury goods, automobiles, tobacco, cement). Some items like healthcare and education are exempt (0%).
For intra-state (within the same state) transactions, GST is split equally between Central GST (CGST) and State GST (SGST). For inter-state transactions, Integrated GST (IGST) is charged at the full rate and collected by the central government, which then distributes the state's share.
Businesses with annual aggregate turnover exceeding ₹40 lakhs (₹20 lakhs for special category states) must register for GST. For service providers, the threshold is ₹20 lakhs (₹10 lakhs for special states). E-commerce sellers, inter-state suppliers, and businesses receiving reverse-charge supplies must register regardless of turnover.
To add GST: Multiply the base price by the GST rate (e.g. ₹1,000 × 18% = ₹180 GST; Total = ₹1,180). To remove GST from an inclusive price: Divide by (1 + GST rate) (e.g. ₹1,180 ÷ 1.18 = ₹1,000 base; GST = ₹180). This calculator handles both automatically.