Even as some of President Biden’s top campaign officials were attacking Donald J. Trump’s campaign for soliciting donations to pay his legal fees, the Biden-aligned Democratic National Committee was helping pay for lawyers in the special counsel investigation into Mr. Biden’s handling of classified documents.

The D.N.C. has directed at least $1.7 million to lawyers since July to cover the president’s representation in the documents inquiry, a figure that pales in comparison to Mr. Trump’s use of supporters’ donations to pay his hefty legal fees. The former president has spent more than $100 million on legal bills since leaving office, relying almost entirely on donations.

Federal Election Commission records show that since the investigation began last year, the D.N.C. has paid $1.05 million to Bob Bauer, the president’s lawyer. The party committee has also paid $905,000 to Hemenway & Barnes, a Boston firm that employs Jennifer Miller, a lawyer whom the special counsel’s report identified as a “personal counsel for Mr. Biden.”

The party’s payments to cover Mr. Biden’s lawyers — first reported by Axios on Friday — are roughly in line with amounts donors spent to pay for legal defenses for President Barack Obama during his first term.

The Biden campaign has repeatedly amplified the Trump campaign’s use of donor money to pay the former president’s legal bills in his four criminal cases.

As recently as last weekend, top Biden campaign officials celebrated their fund-raising prowess with jabs at Mr. Trump for asking donors to subsidize his lawyers.