The Internal Revenue Service began sharing sensitive taxpayer data this week with immigration authorities searching for ...

The Internal Revenue Service and the White House squabbled over the use of tax data to find suspected undocumented immigrants ...

The Internal Revenue Service's Criminal Investigation unit is working on a new initiative for requesting financial records from banks to track illegal activity such as money laundering.

Internal Revenue Service Commissioner Billy Long is stepping down. Jacob Bogage, White House economic correspondent at the ...

The Internal Revenue Service won’t adjust current income-tax withholding levels for workers and employers to account for ...