The tax records previously obtained by The Times show that Mr. Trump made significant charitable donations over the years, but that the vast majority of them came in the form of land donations, often after he had exhausted efforts to develop it.
The new tax data showed that while in the White House, Mr. Trump made charitable contributions in cash, something the House committee said warrants further investigation.
“We would have inquired as to whether the large cash contributions were supported by required substantiation,” the report said.
The Times’s findings were cited several times in the report, and helped shape the direction of the committee’s investigation.
For instance, Mr. Trump owns an estate in Westchester County, N.Y., called Seven Springs. For years it was a classified as a personal residence. The tax records obtained in 2020 by The Times showed that in 2014, Mr. Trump reclassified the estate as an investment property.
Since then, he has written off $2.2 million in property taxes as a business expense — even as the law allows individuals to write off only $10,000 in property taxes a year.
On Tuesday, the committee revealed that the I.R.S. was looking at this tax maneuver.
The reports also showed that Mr. Trump continued to collect large sums of interest income, a total of $38.1 million during his presidency. They do not disclose the source of that income, but the tax returns previously obtained by The Times showed that through 2017 nearly all of his interest income came from his share of profits earned by a partnership that is controlled by Vornado Realty Trust.
The partnership owns two valuable office towers: 1290 Sixth Avenue in Manhattan; and 555 California Street in San Francisco. Mr. Trump, who has a 30 percent share in the partnership, has no authority over its management, and it has consistently been his strongest-performing asset.