GST refund applications require supporting evidence and prescribe distinct input tax credit calculations for zero-rated and inverted-rated supplies.

GST refund claims for electronic cash ledger balances, tax, interest, penalties, fees and other amounts are generally filed electronically in FORM GST RFD-01 through the common portal, subject to Rule 10B. Supporting evidence depends on the claim. For zero-rated supplies without payment of tax under bond or letter of undertaking, the maximum refund is zero-rated goods and services turnover multiplied by net input tax credit and divided by adjusted total turnover. For an inverted duty structure, the formula from 1 November 2026 multiplies inverted-rated turnover by net input tax credit, divides it by adjusted total turnover and deducts tax payable on the inverted-rated supplies.

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