SE Tax Evasion

http://www.slate.com/articles/news_and_politics/explainer/2009/04/taxes_schmaxes.html

If you make between $25,000 and $100,000, the odds of getting audited are about 7 in 1,000. That number goes up if you make more money. If you make between $100,000 and $200,000, you've got a 1 percent chance. Between $200,000 and $500,000, the odds go up to about 2 percent. Once you get to the highest income category—$10 million or more—there's a 10 percent chance you'll get audited. The likelihood of auditing also goes up slightly if you make less than $25,000, since low-income earners are more likely to take advantage of the earned-income tax credit. The IRS conducts randomized audits every few years, but that's more about data collection than busting tax evaders.