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GST Calculator

Instantly calculate GST amounts for any rate (3%, 5%, 12%, 18%, 28%). Supports both GST-exclusive and GST-inclusive modes with CGST/SGST/IGST breakdown.

Enter GST Details

GST Calculation Mode

Enter price before GST — we'll add the tax.

GST Rate

%

GST Breakdown

Base Amount

₹10,000

GST (18%)

+ ₹1,800

Total Amount

₹11,800

Tax Component Breakdown

CGST (9%) — Intra-state
₹900
SGST (9%) — Intra-state
₹900
IGST (18%) — Inter-state
₹1,800

GST at All Rates for ₹10,000

RateGST AmountTotal
3%₹300₹10,300
5%₹500₹10,500
12%₹1,200₹11,200
18%₹1,800₹11,800
28%₹2,800₹12,800

GST Calculation Formula

Add GST (Exclusive):

GST Amount = Base Price × (GST Rate ÷ 100)
Total Price = Base Price + GST Amount

Remove GST (Inclusive):

Base Price = Total Price × 100 ÷ (100 + GST Rate)
GST Amount = Total Price – Base Price

Worked Example

Scenario: Product costs ₹10,000 (excluding GST) at 18% GST rate

Base Amount₹10,000
GST @ 18%₹1,800
CGST (9%)₹900
SGST (9%)₹900
Total Amount₹11,800

GST Calculator — FAQs

GST (Goods and Services Tax) is a unified indirect tax levied in India on the supply of goods and services. It replaced multiple cascading taxes and has been applicable since July 1, 2017. GST rates are 0%, 3%, 5%, 12%, 18%, and 28%.