Exemption of Property and Income of a State From Union Taxation
(1) The property and income of a State shall be exempt from Union taxation. (2) Nothing in clause (1) shall prevent the Union from imposing, or authorising the imposition of, any tax to such extent, if any, as Parliament may by law provide in respect of a trade or business of any kind carried on by, or on behalf of, the Government of a State... (3) Nothing in clause (2) shall apply to any trade or business, or to any class of trade or business, which Parliament may by law declare to be incidental to the ordinary functions of Government.
What this Article actually means
How it shows up in everyday life
This is why a state government's core administrative functions and property generally aren't subject to central income tax or similar Union levies — but if a state runs something more like a genuine commercial business (rather than an ordinary government service), Parliament retains some power to tax that specific commercial activity.
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Quick answers about Article 289
Can the Union tax a state government's commercial enterprise, like a state-run business?
The text above reproduces Article 289 of the Constitution of India as amended to date, for general educational reference. It is public-domain legislative text, but we recommend cross-checking the authoritative version at legislative.gov.in or india.gov.in before relying on it for a legal matter. The explanation, examples and FAQs are general information, not legal advice — consult a qualified advocate for guidance on your specific situation.