Free Tool · Business & GST

GST Calculator

Add or remove GST at 5%, 12%, 18%, 28%. Split CGST, SGST for intrastate and IGST for interstate transactions.

All GST slabs
Add & remove GST
CGST + SGST split
IGST for interstate

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GST Calculation

India GST slabs · CGST / SGST / IGST

Calculation Mode

Amount (excl. GST)

₹

GST Rate

Custom rate (%) — default 18

Transaction Type

Base Amount

₹1,00,000.00

Before GST

GST Amount

₹18,000.00

@18%

Total Amount

₹1,18,000.00

Final payable

Tax Split

CGST (9%): ₹9,000.00
SGST (9%): ₹9,000.00

GST Calculator India — Add & Remove GST

Goods and Services Tax (GST) is a unified indirect tax in India. Businesses use GST calculators daily to prepare invoices, reverse-calculate base prices, and verify vendor bills. Enter any amount to add GST (exclusive → inclusive) or remove GST (inclusive → exclusive).

GST Rate Slabs

Rate	Examples
5%	Essential food, medicines, transport
12%	Processed food, business class air travel
18%	Most services, electronics, restaurants
28%	Luxury cars, aerated drinks, tobacco

Frequently Asked Questions

Common questions about using our tax calculator and understanding your results.

What are GST rates in India?

Common GST rates are 0% (exempt), 5% (essential items), 12% (processed food), 18% (most services), and 28% (luxury items). Some items also attract cess on top of 28%.

CGST vs IGST — what's the difference?

For intrastate sales (within same state), GST splits equally into CGST (Central) and SGST (State). For interstate sales, full GST applies as IGST (Integrated GST) collected by the Centre.