State of Karnataka & Anr. Etc. vs State of Meghalaya & Anr. Etc. Etc.
Background
Karnataka and Kerala had each passed state laws (the Karnataka Tax on Lotteries Act, 2004 and the Kerala Tax on Paper Lotteries Act, 2005) to tax lotteries organised in their states by other State Governments, such as Nagaland, Sikkim, Arunachal Pradesh and Meghalaya. The High Courts of Karnataka and Kerala struck down these laws, holding that only Parliament - not the state legislatures - had the power to deal with lotteries run by a government, and ordered the tax already collected to be refunded. The taxing states (Karnataka and Kerala) appealed to the Supreme Court, while the lottery-organising states defended the High Court rulings.
Decision Breakdown
The Supreme Court held that "lotteries" are a form of "betting and gambling," and while Entry 40 of the Union List gives Parliament exclusive power to regulate lotteries run by the Government of India or a State, this does not also take away the states' power to tax such activity under Entry 62 of the State List, which specifically covers taxes on betting and gambling. The Court reasoned that a subject being carved out of one entry (regulation) does not automatically mean it is excluded from a different, specific taxation entry with an overlapping subject matter. It also rejected the argument that the state laws were unconstitutional for operating "extra-territorially," holding that since the lotteries of other states were actually being sold and conducted within Karnataka and Kerala, there was sufficient territorial connection to justify the tax. The Court therefore set aside both High Court judgments and upheld the Karnataka and Kerala tax laws as validly enacted, meaning no refund was due.
Lesson Learnt
A state has the power to tax an activity conducted within its borders (like the sale of another state's lottery tickets) even if only Parliament can regulate how that activity is organised - taxation power and regulatory power under the Constitution can rest with different levels of government for the same subject matter.