GST Calculator — Add or Remove GST Online

What is GST?

Goods and Services Tax (GST) is an indirect tax levied on the supply of goods and services in India. Introduced on 1st July 2017, it replaced a web of indirect taxes including VAT, service tax and excise duty with a single unified system. Whether you are a freelancer, shopkeeper, online seller or buyer comparing prices, knowing the exact GST amount on a bill is essential.

GST Calculation Formula

Our calculator supports both directions:

• Add GST (exclusive amount): GST = (Net × Rate) ÷ 100 and Gross = Net + GST
• Remove GST (inclusive amount): Net = (Gross × 100) ÷ (100 + Rate) and GST = Gross − Net

GST Slabs in India

• 0% — Essentials like fresh fruits, vegetables, milk, books.
• 3% — Gold and silver jewellery.
• 5% — Packaged food, footwear under ₹1,000, economy air travel.
• 12% — Processed food, business-class air travel, butter, ghee.
• 18% — Most services, smartphones, IT, restaurants (AC).
• 28% — Luxury items, automobiles, tobacco, aerated drinks.

CGST, SGST and IGST

For sales within the same state, the total GST is split equally between CGST (Central) and SGST (State). For sales between different states, a single IGST is charged equal to the full GST rate. Our calculator automatically shows the CGST and SGST split for intra-state transactions.

Who Should Use This Calculator?

• Small businesses and freelancers preparing invoices.
• Online sellers (Amazon, Flipkart, Meesho, Etsy) computing taxes.
• Buyers verifying GST charged on a bill.
• Accountants and students learning GST math.

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