To sponsor politicians as well as to bribe bureaucrats, officials and union leaders, business houses have worked out ingenious ways. In Bombay and other metros, there exists a parallel system which converts white money into black. Once an operator is contacted by a company to generate unaccounted money, he raises fictitious bills. These are cleared by the company through cheque payment. The operator puts the money in his account and gives the cash back to the company for a 10-per cent commission. A senior TNC official says these operators come in handy when amounts up to Rs 10-15 lakh have to be raised in black in a jiffy.