Try spending some time in Greece, where tax evasion is practically a national pastime - and was no doubt instrumental in bankrupting the country. Various studies estimate that Greece may be losing as much as $30 billion a year to tax cheating. From the NYT:
In the wealthy, northern suburbs of this city, where summer temperatures often hit the high 90s, just 324 residents checked the box on their tax returns admitting that they owned pools. So tax investigators studied satellite photos of the area -- a sprawling collection of expensive villas tucked behind tall gates -- and came back with a decidedly different number: 16,974 pools.
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To get more attentive care in the country's national health system, Greeks routinely pay doctors cash on the side, a practice known as "fakelaki," Greek for little envelope. And bribing government officials to grease the wheels of bureaucracy is so standard that people know the rates. They say, for instance, that 300 euros, about $400, will get you an emission inspection sticker. Some of the most aggressive tax evaders, experts say, are the self-employed, a huge pool of people in this country of small businesses. It includes not just taxi drivers, restaurant owners and electricians, but engineers, architects, lawyers and doctors.The cheating is often quite bold. When tax authorities recently surveyed the returns of 150 doctors with offices in the trendy Athens neighborhood of Kolonaki, where Prada and Chanel stores can be found, more than half had claimed an income of less than $40,000. Thirty-four of them claimed less than $13,300, a figure that exempted them from paying any taxes at all.