Warren Slams Move to End IRS Partnership Oversight Regulations

April 22, 2026, 8:55 AM UTC

Proposed IRS rules scrapping reporting requirements for complex partnerships will neutralize one of the few remaining tools the agency has to identify abusive partnership transactions, Senate Democrats are warning in a new missive to IRS and Treasury Department officials.

The letter, led by Sen. Elizabeth Warren (D-Mass.), pushed back on regulations proposed in March that rescind final rules requiring the reporting of partnerships’ basis-adjustment transactions to the IRS.

“This requirement effectively sent up a red flag for the IRS to examine, an especially important signal for an agency with limited resources,” Warren wrote to Treasury Secretary Scott Bessent and Assistant Secretary for Tax Policy Ken Kies.

Rules requiring the transactions to be reported as potentially abusive “transactions of interest” were finalized under President Joe Biden’s Treasury. The agency under President Donald Trump indicated it would withdraw those rules last year as it made other moves to pivot away from cracking down on enforcing tax laws around the practice complex partnerships have utilized to lower tax obligations.

The shift away from the requirements was pushed by businesses and tax practitioners complaining about complex and burdensome new compliance obligations.

The lawmakers said the repeal moves the IRS in the wrong direction, noting a recent Treasury Inspector General for Tax Administration report that called for improving its procedures to identify the partnerships to be examined.

“Removing this reporting requirement will enable tax dodging by some of the wealthiest Americans, further tilting our tax code in favor of the rich and powerful,” Warren’s letter said.


To contact the reporter on this story: Chris Cioffi in Washington at ccioffi@bloombergindustry.com

To contact the editors responsible for this story: Kim Dixon at kdixon@bloombergindustry.com; Martha Mueller Neff at mmuellerneff@bloomberglaw.com

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