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Online GST Calculator (Inclusive & Exclusive)

Calculate GST amount, base price, CGST, SGST, IGST, and total invoice value for 0%, 5%, 12%, 18%, and 28% tax rates instantly.

Net Base Amount:₹10,000.00
Total GST (18%):₹1,800.00
CGST (9%): ₹900.00 · SGST (9%): ₹900.00
Total Invoice Value:₹11,800.00

How GST Calculation Works in India

1. GST Exclusive Formula: GST Amount = (Base Price × GST Rate) / 100

2. GST Inclusive Formula: Base Price = (Total Amount × 100) / (100 + GST Rate)

For intra-state sales within the same state, GST is equally split into CGST (Central GST) and SGST (State GST). For sales outside the seller state, IGST (Integrated GST) is charged.