You may not be aware, but every year the IRS offers a reward to anyone who provides them with information about a person who has evaded taxes. If you turn in someone for tax evasion the IRS will give you a reward of 10% of whatever amount the person owed. Usually this comes to several thousand dollars or more, but sometimes it is in the millions. You will need some basic information about the person, including their social security number. This is for real. You can download the official form here: http://www.irs.gov/pub/irs-pdf/f211.pdf. Warning. This is a real IRS form, and may cause temporary insanity, blindness, and rage.