Specialists have left the I.R.S. and audits have been abandoned since the president returned to office.

The Treasury Department and Internal Revenue Service are issuing rules that provide hundreds of billions of dollars in tax relief to big companies and the…

Holly Paz was among officials scrutinizing tax shelters before she was placed on leave and Fox News reported she had been fired.

The Treasury Department is rolling back efforts to shut down aggressive strategies used by America’s biggest multinational companies and wealthiest people.

Ken Kies, a longtime tax lobbyist who worked for some of the world’s largest businesses, is now running the Treasury Department’s office that will administer…

The chief executive of Nvidia, Jensen Huang, has taken advantage of popular loopholes in the federal estate and gift taxes, which have quietly been eviscerated.

An insider accused the agency of failing to scrutinize a lucrative tax break in Puerto Rico designed to lure wealthy Americans to the island.

The industrial giant Caterpillar hired William Barr and other lawyers to defuse a federal criminal investigation of alleged tax dodges.