On each occasion, there was a loud protest. Consumption declined for a few months. Then it went back up and kept rising till the next big and sudden increase.
The mystery of course is why we don’t use the exchange rate to tax imports. That would be politically less unpopular.
This proved, if proof was needed, that it’s foolish not to tax things the demand for which is inelastic. This, by the way, was the reason why salt used to be taxed till Gandhiji recklessly opposed it and the salt tax was abolished after Independence.
As an aside, let me say that I think it should be restored. Good public finance practice requires it. The 5 per cent GST rate should be applied. Or, at any rate, the states should find a way of taxing it. If no one else, at least the doctors will approve. But I know this is a pipe dream. So let’s leave it by acknowledging that it’s yet another violation of a sound principle of taxation.
And this brings me to the central point of this article: Mr Modi must make the restoration of sound principles of taxation his next big series of reforms because Indian tax practices are so hugely counterproductive.
Committee after committee since 1956 has pointed out the myriad ways in which Indian taxation practices lead not only to poor economic outcomes, but they also don’t help revenue objectives. So, the point for Mr Modi is this: the right to tax may be a sovereign right but the right to tax stupidly is a political privilege that needs to abolished.