The underground or "black" economy is rapidly rising, and the fault is mainly due to government policies. 

Here is the evidence. The Federal Deposit Insurance Corp. (FDIC) released a report last week concluding that 7.7 percent of U.S. households, containing at least 17 million adults, are unbanked (i.e. those who do not have bank accounts), and an "estimated 17.9 percent of U.S. households, roughly 21 million, are underbanked" (i.e., those who rely heavily on nonbank institutions, such as check cashing and money transmitting services). As an economy becomes richer and incomes rise, the normal expectation is that the proportion of the unbanked population falls and does not rise as is now happening in the United States. 

Tax revenues are falling far more rapidly at the federal, state and local level than would be expected by the small drop in real gross domestic product (GDP) and changes in tax law that have occurred since the recession began. The currency in circulation outside the U.S. Treasury, Federal Reserve banks and the vaults of depository institutions - that is, the currency held by individuals and businesses - has grown by 13.3 percent in the last two years, while real nominal (not inflation-adjusted) GDP has not grown at all, and real (inflation-adjusted) GDP incomes have fallen by more than 3 percent. With the growth of electronic means of payment and financial service providers, it would be expected that the currency component of GDP would fall, not rise. 

The underground economy refers to both legal activities, such as often found in construction and services industries where taxes are not withheld and paid, and illegal activities, such as drug dealing and prostitution.

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