Elon Musk is leaving his US government role as a top adviser to President Donald Trump after spearheading efforts to reduce and overhaul the federal bureaucracy.

The billionaire entrepreneur posted about his decision on X, his social media website.

“As my scheduled time as a Special Government Employee comes to an end, I would like to thank President @realDonaldTrump for the opportunity to reduce wasteful spending,” he wrote.

“The @DOGE mission will only strengthen over time as it becomes a way of life throughout the government.”

A White House official, who requested anonymity to talk about the change, confirmed that Musk was leaving.

Musk’s departure comes one day after he criticised the centrepiece of Trump’s legislative agenda, saying he was “disappointed” by what the president calls his “big beautiful bill.”

The legislation includes a mix of tax cuts and enhanced immigration enforcement.

While speaking to CBS, Musk described it as a “massive spending bill” that increases the federal deficit and “undermines the work” of his Department of Government Efficiency, known as DOGE.

“I think a bill can be big or it could be beautiful,” Musk said. “But I don’t know if it could be both.”

Trump, speaking in the Oval Office on Wednesday, defended his agenda by talking about the delicate politics involved with negotiating the legislation.

“I’m not happy about certain aspects of it, but I’m thrilled by other aspects of it,” he said.

Trump also suggested that more changes could be made.

“We’re going to see what happens,” he said. “It’s got a way to go.”

Speaker Mike Johnson thanked Musk for his work and promised to pursue more spending cuts in the future, saying “the House is eager and ready to act on DOGE’s findings.”

Musk’s criticism comes as he steps back from his government work, rededicating himself to companies like the electric automaker Tesla and rocket manufacturer SpaceX.

He’s also said he’ll reduce his political spending, because “I think I’ve done enough.”

Source: AAP