Harvard University, which is clashing with the Trump administration over its academic independence and the withdrawal of billions of dollars in research funding, said on Wednesday that its president had chosen to cut his own pay by 25 percent starting later this year.

The university has not disclosed specifics about its compensation package for the president, Alan M. Garber, who became Harvard’s permanent leader last year. His recent predecessors were paid around $1 million a year.

Whatever it amounts to in dollar terms, though, the pay reduction is a symbolic gesture compared with the scale of the university’s fight with the federal government, which has already moved to block more than $2.6 billion in funding for Harvard.

A university spokesman, Jonathan L. Swain, said Dr. Garber’s salary would be reduced starting July 1, when Harvard’s next fiscal year begins. The university, which has already halted new hiring and suspended merit raises for many employees, said that other Harvard leaders were also volunteering to accept changes to their pay.

The university acknowledged Dr. Garber’s decision the day after it expanded its lawsuit against the Trump administration.

The government made a range of intrusive demands of Harvard last month, asserting that the university had, among other things, not done enough to combat antisemitism. The university has sharply contested those accusations. Then last week, Linda McMahon, the education secretary, said that Harvard would not be eligible for any more federal grants.