Current Affairs explainer · 12 September 2026 · Economy coverage of the GST reform anniversary

The news in one line: As GST 2.0 nears its first anniversary (the new rates took effect 22 September 2025), the scorecard reads: consumer inflation softened, compliance collections hit record months, and the reform debate has moved from “what rates” to “what next” — slabs, cesses, and the informal-sector inclusion gap.

What exactly changed under GST 2.0?

The rationalisation announced by the GST Council in September 2025 dismantled the rate architecture that had run unchanged since 2017. The four-slab structure (5/12/18/28) collapsed into two principal rates — 5% (merit) and 18% (standard) — with a 40% demerit rate reserved for sin and luxury goods (tobacco, pan masala, high-end vehicles), initially shielded by the existing compensation cess. Hundreds of mass-consumption items — food products, medicines, consumer durables, small cars, air conditioners, insurance premia — moved into or toward the 5% bracket, while services and mid-tier goods standardised at 18%. The political packaging (“GST bachat utsav”) matched the economics: an explicit bet that lower rates would widen the base and lift compliance enough to offset the headline revenue give-away. Examiners love this pairing — expect one question on the new slab structure and one on which goods sit in the demerit bucket.

What did the first year deliver?

Three verifiable outcomes. Read them in this order — disinflation, compliance, simplification — because examiners lift statements straight from this paragraph. Disinflation: the RBI explicitly credits the pass-through from the rate cuts with a “sobering impact” on consumer prices — CPI has run below the 4% midpoint through 2026, and the anniversary period coincides with the softest inflation prints in years. Compliance: monthly gross collections have touched successive record highs since late 2025 — the widened base and formalisation effects outpacing the rate cuts, at least through the first year. Simplification: the invoice-matching maze around the old 12% slab has largely dissolved, and small businesses report fewer classification disputes. Now the honest caveats, which examiners love as “which of the following statements is incorrect” traps: state governments’ compensation-cess anxieties persist; some sectors (cars above the demerit line, insurance-linked services) saw transitional disputes; and the revenue-neutral-rate question — whether the reform is truly self-financing over a full business cycle — cannot be settled in twelve months.

What problem was GST 2.0 actually solving?

The 2017 design was a compromise, and the compromises compounded: four slabs, multiple cesses, and thousands of classification battles. By 2024–25 the complaint list had hardened into three examinable charges — the rate structure was too complex (correction of inverted duty structures alone consumed years of disputes), the compliance burden on small firms was disproportionate, and items of mass consumption were taxed too high for an economy trying to deepen consumption. The Council’s answer inverted the logic itself: fewer slabs, merit rates for mass items, and a punitive top rate for demerits — converting GST from a revenue-maximising design into a consumption-deepening design. Fix this framing in your head; it is the lens through which every subsequent change reads. The strategic backdrop mattered too: the reform landed months after tariff shocks from the US trade war made domestic demand expansion a national economic priority — expect examiners to test that connection.

How did the federal negotiation shape it?

GST is a Council product — the Union and the states decide together, and the arithmetic matters for prelims: the Centre holds one-third of the vote, the states together hold two-thirds, and decisions need a three-fourths (75%) majority. That threshold applies to rate changes too, which is why the Council works by “consensus-plus” — build consensus first, then formalise the 75% vote (the 2016 practice). The 2025 round was the Council’s biggest collective act since the compensation-cess disputes of 2020–22. States’ core anxiety — losing revenue with no working compensation formula, since the original 5-year compensation window ended mid-2022 and only cess-funded gap-filling continued — was managed through phasing, transition credits, and the implicit promise that demerit-rate collections would backfill the losses. Lock this line in for mains: GST 2.0 is as much a cooperative-federalism case study as a tax reform — the Council held, the consensus mechanism held, and the reform survived an election-heavy calendar.

What are the second-year battles?

• Slab convergence: the end-state debate — should 5% and 18% merge toward a single standard rate plus a demerit rate, as many economists urge, or should merit rates on essentials be protected as they are? Expect examiners to phrase this as “merit vs demerit” or “single standard rate” — read it as the same battle.
• Cess architecture: what replaces the compensation cess as it winds down — a permanent demerit surcharge on sin and luxury goods, or absorption into the top slab? This is the most examined pair in GST’s second-year reform corridor.
• Inclusion: the informal sector and micro-enterprises still sit partly outside the net; composition schemes and threshold debates continue. The examiner’s trap: assuming GST already covers the whole economy.
• Tech hardening: e-invoicing expansion and AI-assisted analytics to choke off fake-ITC frauds, which leak real revenue every year. Link this mentally with enforcement — the two are quoted together in Mains-style answers.
• Petroleum’s absence: the classic unfinished business — bringing petrol, diesel and real-estate stamp duties into GST remains the Council’s standing untouchable, blocked as it is by state revenue concerns and the required consensus.

Rapid facts for prelims

GST launched: 1 July 2017 (101st Constitution Amendment Act, 2016; Article 279A GST Council). GST 2.0 rates effective: 22 September 2025; structure: 5% merit / 18% standard / 40% demerit; compensation cess retained for demerit goods initially. Council: Union FM chairs; states two-thirds of vote; decisions by three-fourths majority. First year collections: record gross monthly highs through 2026; compliance base expanded. Inflation effect: RBI-cited “sobering impact” on CPI. Standing exclusions: petroleum products, alcohol for human consumption, electricity, real-estate stamp duties. Next debates: slab convergence, cess replacement, informal-sector inclusion, e-invoicing, petrol under GST.

Practice questions

1. What rate structure did GST 2.0 create? — Two principal slabs (5%, 18%) plus a 40% demerit rate, effective 22 September 2025.
2. Under which constitutional provision does the GST Council function? — Article 279A, inserted by the 101st Amendment Act, 2016.
3. Which macro effect did the RBI attribute to GST 2.0? — A disinflationary (“sobering”) impact on CPI as rate cuts passed through to prices.
4. Name three items still outside GST. — Petroleum products, alcohol for human consumption, electricity (plus real-estate stamp duties).

The closing argument

The anniversary verdict for Mains: GST 2.0 traded a year of rate revenue for a decade of consumption formalisation — and the first year’s data leans in its favour. Inflation softened, records broke, and the Council’s federal machinery absorbed its biggest restructuring without fracture. But the honest ledger keeps three debits open: the compensation-cess cliff ahead, the informal sector still half outside the net, and petroleum’s continuing exemption that distorts the base. The second year will be judged not by the anniversary headlines but by whether slab convergence and inclusion advance — the difference between a rate cut and a completed reform.

Mains practice

1. “GST 2.0 marks the shift of India’s indirect tax design from revenue-maximising to consumption-deepening.” Discuss with its federal implications. (GS-3)

Revision card

• GST 2.0: effective 22 Sep 2025; 5% / 18% / 40% demerit; mass items moved to merit rate.
• Year-one results: CPI softened (RBI-cited), record collections, simpler compliance.
• Constitutional base: Article 279A; 101st Amendment 2016; Council 3/4ths majority.
• Year-two agenda: slab convergence, cess replacement, inclusion, e-invoicing, petrol.

Sources

• IIFL — RBI on GST rationalisation’s disinflationary impact
• PIB — GST Council decisions and collections data
• GST Portal — official notifications

How the GST Council actually decides (static depth)

The Council’s design is the exam’s favourite federalism hook. Votes are weighted: the Centre holds one-third of total votes, the states collectively two-thirds; decisions need a three-fourths majority of weighted votes cast — so the Centre can block anything short of the threshold. Composition: the Union Finance Minister (chair), the Minister of State for Finance, and state finance ministers. The 2025 rationalisation was the Council’s biggest rate decision since 2017 — passed, characteristically, by consensus rather than a formal division. For Mains, pair the Council’s working with the compensation-cess story (a guaranteed 14% growth-linked compensation, ended mid-2022, with the cess extended to service borrowing gaps) to argue both the strength (cooperative bargaining) and the strain (state revenue anxiety) of GST federalism.

Practice questions (set 2)

1. What majority does the GST Council need for decisions, and how are votes weighted? — Three-fourths of weighted votes cast; Centre one-third, states collectively two-thirds.
2. Who chairs the GST Council? — The Union Finance Minister.

Background: the original two-slab GST reform of September 2025, analysed as it happened.

Related reading: Sone River Water Agreement: Bihar and Jharkhand End a 25-Year Dispute

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