GET RID OF CASH ALTOGETHER AND JUST TAX CONSUMPTION:

Measuring an unreported economy is obviously tricky. But look closely and you can see the traces of a booming informal economy everywhere. As Feige said to me, "The best footprint left in the sand by this economy that doesn't want to be observed is the use of cash." His studies show that, while economists talk about the advent of a cashless society, Americans still hold an enormous amount of cold, hard cash--as much as seven hundred and fifty billion dollars. The percentage of Americans who don't use banks is surprisingly high, and on the rise. Off-the-books activity also helps explain a mystery about the current economy: even though the percentage of Americans officially working has dropped dramatically, and even though household income is still well below what it was in 2007, personal consumption is higher than it was before the recession, and retail sales have been growing briskly (despite a dip in March). Bernard Baumohl, an economist at the Economic Outlook Group, estimates that, based on historical patterns, current retail sales are actually what you'd expect if the unemployment rate were around five or six per cent, rather than the 7.6 per cent we're stuck with

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