The IRS is latest federal agency under review by Elon Musk’s cost-cutting group.

Several people briefed on the matter said cuts to the IRS cuts numbering in the thousands. One target is tax collections.

At least one member of Elon Musk’s Department of Government Efficiency team visited the Internal Revenue Service offices in ...

A sudden drop in the number of employees at the I.R.S. could interfere with the agency’s work to process millions of ...