India’s black economy is notoriously large, up to 50 per cent of the economy according to some estimates, and calculated by the economic think-tank National Institute of Public Finance and Policy ( NIPFP) at 10 per cent of GDP last year. But only a few people now stuff cash into pillows, mattresses, under floors, or in clay pots buried underground. “Most of the money is circulating all the time in today’s economy. Real estate, foreign locations, gold—today the options to park funds in are many,” says Prof Arun Kumar, who teaches economics at JNU in Delhi and is an expert on the black economy. He says not to expect a rush for gold either. “Those who could afford to buy gold with the money they have—legit or not—have already bought it,” Prof Karanth also says.