It is common knowledge that the IRS audits a very small percentage of tax filers – less than 1% - but audits are spread unevenly among income groups. The IRS has limited resources, so it prioritizes where it spends them. Naturally, the IRS directs most of its resources towards larger earners. According to the IRS , it audits 8.2% of taxpayers with incomes above $10 million, 2.5% of those with incomes between $1 million and $10 million, and less than 1% for incomes below $1 mi