In 2022 92.3% of filers reported income of less than $200K [0]. An audit rate of 63% is lower than what one would expect if audit-attracting behavior was evenly distributed across the population.
0. https://www.irs.gov/statistics/soi-tax-stats-individual-stat...
It doesn't even make sense from a pure cash point of view. It's better for an agent to audit someone making $20M and win a $500K judgement than it is for them to audit 1,000 $25K earners and fleece them $500 a piece. What a waste.
Audits should be exponentially lopsided, not targeted exclusively at the middle class.