GST Calculator
Calculate GST instantly — add or remove GST from any amount. Supports all Indian GST slabs (0%, 3%, 5%, 12%, 18%, 28%) with CGST/SGST breakdown. Free, no login.
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Amount entered is before tax
What is GST?
GST (Goods and Services Tax) is India's unified indirect tax that replaced VAT, excise duty, and service tax in 2017. It applies to the supply of goods and services at each stage of the value chain, with credit for tax paid at earlier stages (input tax credit).
When to use inclusive vs exclusive
- Exclusive — use when you have a base price and need to add GST for an invoice or quotation.
- Inclusive— use when a product is MRP-tagged or you receive a bill that says "GST included" and you need to find the base amount for accounting.
GST rate guide (common items)
- 5%: packaged food, transport, economy hotel
- 12%: processed food, business class travel
- 18%: most services, restaurants, electronics
- 28%: cars, AC, luxury hotels, tobacco
Frequently asked questions
- What are the GST slabs in India?
- India's GST has six rate slabs: 0% (essential items like food grains, milk), 3% (gold and precious stones), 5% (household necessities, economy class air travel), 12% (processed food, mobile phones), 18% (most goods and services, restaurants), and 28% (luxury goods, automobiles, tobacco).
- What is the difference between inclusive and exclusive GST?
- Exclusive GST (excl.): the amount you enter is the base price before tax — GST is added on top. Inclusive GST (incl.): the amount you enter already includes GST — the calculator extracts the base price and the tax component. Use inclusive for MRP-tagged products, exclusive for B2B invoicing.
- What is CGST and SGST?
- For intra-state supplies (buyer and seller in the same state), GST is split equally into CGST (Central GST) and SGST (State GST). For inter-state supplies, the full GST is charged as IGST (Integrated GST) paid to the central government.
- How to calculate GST manually?
- For exclusive: GST amount = (Base price × Rate) / 100. Total = Base + GST. For inclusive: Base = Total / (1 + Rate/100). GST = Total − Base.