A legal analysis of Input Tax Credit (ITC) refund under GST reveals conflicting judicial interpretations. The Supreme Court strictly construes Section 54(3), limiting ITC refunds to specific scenarios involving zero-rated supplies and tax rate differentials. The court emphasizes that refunds are a legislative concession, not a constitutional right, and Parliament retains discretion in defining refund circumstances. This interpretation contrasts with a more permissive Sikkim High Court ruling, creating potential legal uncertainty regarding ITC refund eligibility.