Meta’s $16 Billion Tax Hit Shows Biden-Era Minimum Tax Still Has Teeth

Meta’s $16 billion tax charge shows that despite new corporate breaks, the Biden-era minimum tax remains one of the few guardrails keeping effective corporate tax rates from disappearing entirely.

Meta Platforms Inc. reported that its quarterly income dropped by $16 billion due to income taxes—an outcome many headlines wrongly attribute to Trump-era tax cuts.

The real culprit is the Corporate Alternative Minimum Tax (CAMT), a 2022 reform from the Biden administration designed to ensure large corporations pay at least 15% of their book income.

While Meta stands to benefit from the summer’s new Republican tax law—which extended full expensing, loosened interest limits, and kept the 21% corporate rate—the CAMT limits just how much of those tax perks can translate into real-world tax savings.

The Law in Play

Corporate Alternative Minimum Tax (CAMT), 26 U.S.C. § 55

The CAMT requires corporations with at least $1 billion in average annual financial-statement income to pay a minimum tax of 15% on adjusted book income. It is a backstop against excessive deductions, including those from research and development and interest expenses expanded by the 2017 Trump tax law.

Meta’s disclosure that …