Elon Musk Slams Trump’s Tax Bill as a Fiscal “Abomination”

​Elon Musk is publicly breaking with President Trump over the administration’s sweeping tax bill, calling it a “budget-busting abomination” in a series of sharp social media posts.

The criticism comes at a sensitive moment, with Trump lobbying Congress to fast-track the legislation. Musk’s remarks could stiffen opposition among fiscal conservatives and delay the bill’s passage. “This massive, outrageous, pork-filled Congressional spending bill is a disgusting abomination,” Musk posted. He also accused the bill of wiping out the cost savings achieved by his former team at the Department of Government Efficiency, which he recently stepped away from.

The bill, which pairs tax cuts with a debt ceiling increase, is projected to reduce federal revenue by about $4 trillion over a decade and add roughly $2.5 trillion to the deficit, even after cuts to safety-net programs like Medicaid and food stamps.

Musk’s criticism was echoed by Senator Mike Lee of Utah, while House Speaker Mike Johnson and Treasury Secretary Scott Bessent defended the legislation as necessary to boost growth. “It’s one big beautiful bill,” Bessent said.

Adding to the tension, the bill aggressively phases out Biden-era tax credits for electric vehicles and clean energy—policies that Tesla, Musk’s flagship company, has publicly supported. Tesla Energy warned that ending those credits would threaten the stability of the U.S. energy grid, a message Musk amplified online.

Musk also diverged from Trump on trade policy, saying earlier this year that he supports “lower tariffs rather than higher tariffs,” signaling a growing ideological split between the two high-profile figures.

​Bottom line: Musk’s outspoken rejection of Trump’s tax bill is more than personal—it’s political. As Republicans scramble to unite behind the legislation, one of their most visible business allies may have just thrown a major wrench in the deal.