Former President Donald J. Trump’s political action committee, which began last year with $105 million, now has less than $4 million left in its account after paying tens of millions of dollars in legal fees for Mr. Trump and his associates.

The dwindling cash reserves in Mr. Trump’s PAC, called Save America, have fallen to such levels that the group has made the highly unusual request of a $60 million refund of a donation it had previously sent to a pro-Trump super PAC. This money had been intended for television commercials to help Mr. Trump’s candidacy, but as he is the dominant front-runner for the Republican nomination in 2024, his most immediate problems appear to be legal, not political.

The super PAC, which is called Make America Great Again Inc., has already sent back $12.25 million to the group paying Mr. Trump’s legal bills, according to federal records — a sum nearly as large as the $13.1 million the super PAC raised from donors in the first half of 2023. Those donations included $1 million from the father of his son-in-law, Charles Kushner, whom Mr. Trump pardoned for federal crimes in his final days as president, and $100,000 from a candidate seeking Mr. Trump’s endorsement.