GST Ready Reckoner by V.S. Datey is India's most trusted and comprehensive single-volume reference on the Goods and Services Tax regime?now in its 29th Edition, fully updated to incorporate all amendments made by the Finance Act 2026. The book covers every dimension of the tax: conceptual foundations, charging provisions, sector-specific compliance, administrative procedures, enforcement, and the full appeals hierarchy. The distinguishing character of this work is that it is simultaneously legislative and practical. The author does not merely restate statute, he explains it, critiques it where it is absurd or anomalous, traces its evolution, and anchors it in the reality of how it is applied in trade and litigation. The Finance Act 2026 changes, including the overhaul of the GST rate structure w.e.f. 22-9-2025 from the earlier Nil/5%/12%/18%/28% slabs to a rationalised Nil/5%/18%/40% structure, the abolition of GST Compensation Cess w.e.f. 1-2-2026, major amendments to post-sale discount provisions, the 90% provisional refund on inverted duty structure, refund of IGST on exports below ?1,000, and the correction of the anomalous place of supply rule for intermediary services of export and import, are all incorporated into the text and explained with full statutory context.