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Exercises · Q6

Q.A dealer in Tamil Nadu sells goods worth ₹80,000 to a dealer in Kerala (an inter-state sale). GST is charged at an illustrative rate of 18%. Compute the IGST payable.

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Since the sale is from a dealer in Tamil Nadu to a dealer in Kerala, it is an inter-state supply, on which only IGST applies, at the full combined rate.

Computation:

IGST = Sale value × Rate = ₹80,000 × 18% = ₹14,400

Verification (dual-check): if this transaction were instead intra-state at the same 18% combined rate, it would have split into CGST ₹7,200 + SGST ₹7,200 = ₹14,400 total — the same total figure as the IGST computed here, confirming IGST is simply the full combined rate applied once (n …

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