Has GST delivered on its promise?

The GST was sold as a clean-up: address the pernicious cascading taxes, remove the barriers at state borders, and create a unified pan-India market. After nine years, it is a real reform that has come halfway.

The GST has been a meaningful reform. The old cascading, tax piling on tax down a supply chain, has been deeply cut. For goods moving through registered firms, GST really does behave like a single tax on final consumption (see “How does GST work?”). The check-post raj is gone, and trucks that once idled at every border now run a third farther in a day (see “Did GST really create ‘one nation, one market’?”). Millions of firms entered the formal tax net for the first time. Whatever its flaws, India is not going back to the maze of excise, service tax, and seventeen state VATs that came before.

Now the shortfall, which is just as real. The clean consumption tax the textbooks promise works only if the input-credit chain is unbroken, and India’s ITC system breaks in too many places. Petrol, power, and property sit outside GST entirely (see “Why are petrol, power and property still outside GST?”). Exemptions for health, education, and finance break the chain from within (see “Why are exemptions considered cancer in the VAT system?”). Credits and refunds still stick, turning the tax into a cost for the small firms least able to bear it (see “Is India’s GST a real VAT?”). The rates will not sit still, shifting almost every year. And despite the record collections, GST has not clearly raised more, as a share of the economy, than the taxes it replaced (see “How has GST performed as a source of revenue?”). The 2025 overhaul simplified the slabs but left this deeper plumbing largely untouched (see “What was GST 2.0, and was it a step in the right direction?”).

None of these shortfalls is an accident. Each is the residue of the bargain that made GST possible: the exclusions bought the states’ consent, the exemptions bought political peace, and the tangled credit rules grew from a fear of fraud. The distance between the GST India designed and the GST it runs is, in the end, a map of the compromises a federal democracy had to make.

So has GST delivered? It has been a break from the past, but not the clean, broad, single tax it promised to be. It remains an open question whether the government can summon the will to finish what it started, or whether “good and simple” remains an aspiration.