GST 2.0: What Changed in the September 2025 Rate Reform

On 22 September 2025, India's GST Council implemented the most significant rate restructuring since GST launched in 2017 — widely referred to as "GST 2.0." If you're reading GST content that still talks about a four-slab structure of 5%, 12%, 18% and 28% (often with an extra cess layered on top), it's describing the pre-reform system and is now out of date.

The old structure vs the new one

Before the reform, goods and services were spread across four main slabs, with a separate compensation cess stacked on top of certain items (especially "sin" and luxury goods, where the effective rate could run well above the headline 28%). The reform consolidated this into a simpler structure built around two primary rates — a merit rate and a standard rate — with a distinct, higher de-merit rate for luxury and sin-category goods, alongside the existing nil rate for essentials.

Who benefits from the simplification

The stated goal was to reduce classification disputes — a huge share of GST litigation historically came down to arguments over which slab a specific product belonged in, especially for items that sat awkwardly between the 12% and 18% slabs, or 18% and 28%. Fewer slabs means fewer edge cases to argue about, and several everyday goods that were sitting at 12% or 18% moved down to the merit rate, while a smaller set of luxury and sin-category items were consolidated into the new higher de-merit rate, replacing the old rate+cess combination with a single flat number.

What this means practically

• Re-check your invoicing setup. If your accounting software or billing templates still reference old HSN-to-rate mappings, they need updating.
• Re-check any pricing built around the old rate. A product that moved from 28%+cess down to the standard rate has a materially different landed cost.
• Treat any GST content dated before September 2025 with caution — including, frankly, general knowledge from AI tools trained before that date, which may confidently quote the old slab structure without realising it changed.

See our rate finder for a curated set of common items under the new structure, and always cross-check anything specific against the official CBIC rate finder before invoicing.

Key takeaways

• The September 2025 reform simplified GST into fewer, cleaner rate slabs.
• Several 12%/18% items moved to a lower merit rate; luxury/sin items were consolidated into one higher de-merit rate replacing the old rate+cess system.
• Content dated before the reform — including AI-generated content — may describe outdated rates.