The Internal Revenue Service (IRS) is intensifying its efforts to fight tax evasion among the nation's wealthiest individuals, with Commissioner Danny Werfel unveiling that millionaires and billionaires are evading an estimated $150 billion in taxes annually, exacerbating government deficits and undermining the fairness of the tax system.

Fueled by controversial funding from Congress, the IRS has started a broad crackdown targeting wealthy taxpayers, partnerships, and large corporations. In an exclusive interview with CNBC, Werfel affirmed the agency's commitment to rooting out tax evasion and making sure that every taxpayer contributes their fair share.