There is confusion even over the primary understanding of what exactly black money is. Black money is that on which income tax is not paid. By this definition, a very large proportion, and perhaps even the majority, of adult Indians has black money. Only three per cent of Indians pay any income tax at all, and those who do often do not disclose full incomes. Property and land sales in India have a high component of cash payments, which is essentially black money. Given this reality, the problem of black money is really internal and needs to be tackled at the level of collection from the citizen.
However, many believe, because of the Bharatiya Janata Party’s promises and allegations against the Gandhi family, that "black money" is the sum collected as bribes here and sent abroad.
And so wild political claims, some guesswork, and a reckless media has made Indians angry on the issue. It was picked up by the BJP, first by LK Advani and then Narendra Modi. In the BJP view, black money was a problem that was linked to corruption, and something that could be solved easily with a change in government.