GST Calculator

Calculate GST online instantly — add or remove GST from any amount. Free, accurate, and updated for FY 2025-26.

How to Use the GST Calculator

GST Exclusive (Add GST)

Enter your base price (before tax). The calculator adds GST to find the total payable amount. Use this when quoting prices to GST-registered businesses.

GST Inclusive (Remove GST)

Enter the final price (including GST). The calculator extracts the base price and GST component. Use this to find the taxable value from a GST-inclusive price.

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CGST vs SGST vs IGST

For intra-state transactions, GST splits into CGST (Central) and SGST (State) — each at half the GST rate. For inter-state transactions, only IGST applies at the full rate.

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GST Rate Selection

GST has 5 main slabs: 3% (gold/precious metals), 5% (essentials, food), 12% (processed food, medicines), 18% (most services, electronics), 28% (luxury goods, sin goods).

GST Rate Slabs — Quick Reference

GST RateCategoryCommon Examples
0% (Nil)ExemptedFresh vegetables, milk, eggs, books, newspapers, healthcare
3%Precious MetalsGold, silver, diamonds, precious stones, jewellery
5%Essential Goods & ServicesSugar, tea, coffee, edible oil, rail/air transport, insurance
12%Standard GoodsFrozen food, fruit juices, medicines, computers, LED lighting
18%Standard Services & GoodsMost services (CA, lawyers), electronics, paint, cement, telecom
28%Luxury & Sin GoodsCars, tobacco, aerated drinks, casino, online gaming (real money)

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