The IRS audited 1.11% of all personal income tax returns in 2009, which represents a slight increase from the prior years rate of 1.03%. The following represent the IRS audit rates for 2009 for various income thresholds as shown below;
- For taxpayers with income in excess of $1 million, the audit rate increased to 8.36% in 2009, up from 6.42% from the prior years. This group represented the largest increase in audit rate.
- For taxpayers with incomes of $200,000 but less than $1 million, the audit rate increased to 2.65%, up from 2.55% in 2009.
- For taxpayers with incomes below $200,000, the audit rate increased to 1.04%, up from 0.96% in 2009.
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