Tax Consultant
1892 Points
Posted on 26 August 2026
For the September 22, 2025 GST rate changes, the transition rule is straightforward:
Time of supply determines the rate. The relevant date is invoice date (for most supplies), not delivery date.
- Invoice dated before September 22: old rate applies
- Invoice dated on or after September 22: new rate applies
For corrugated carton boxes and wooden pallets specifically: rate reduced from 18% to 5% w.e.f September 22. If you have purchase orders at the old 18% rate, advise your supplier to raise invoices only after September 22 to take advantage of the lower rate.
For ongoing contracts: check whether your contracts have a GST variation clause. If yes, pass on the benefit. If not, the rate reduction goes to the supplier as margin since the pre-agreed price was inclusive of the old rate.
For credit notes on pre-September returns: if a buyer paid 18% on an invoice before September 22, and goods were returned after September 22, the credit note should ideally still carry 18% to match the original invoice. The GST portal links credit notes to original invoices.
This [GST 2.0 simplified rate guide](https://taxgarden.in/blog/gst-2-simplified-rate-structure-slabs-2026-guide) has the full rate table with the GST 2.0 changes by product category.