The government on Monday said it has raised a tax demand of Rs 14,820 crore after completing assessment in 368 cases under the black money law dealing with undisclosed foreign income.In a written reply in the Lok Sabha, Finance Minister Nirmala Seetharaman said in the cases related to deposits made in unreported foreign bank accounts in HSBC, undisclosed income of more than Rs 8,468 crore have been brought to tax and penalty of over Rs 1,294 crore has been levied.