I am dealing in goods upon which GST rate before 15/11/2017 was 28% and after the date GST rate reduced to 18%. So, after 15/11/2017 shall I issue invoice @ 18% or 28%. I have received those goods before 15/11/2017. Invoice date is before 15/11/2017 and payment is also made before 15/11/2017.
31 October 2026
The rate applicable on the date of supply governs (Sec 14), not the rate paid on purchase, so stock bought at 28% is sold at 18% after the cut and the excess ITC need not be reversed; the same principle applied to the 22 September 2025 rate rationalisation.