U.S. Senate · 119th Congress · S. 4639
IRS Whistleblower Program Improvement Act
A bill to provide additional support to whistleblowers who report information about noncompliance with Federal tax laws.
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- Sponsor
- Chuck GrassleyR-IA
- Introduced
- May 21, 2026, in the Senate
- Issue areas
- Policy area
- Taxation (from the Congressional Research Service)
- Full text and actions
- congress.gov
Votes on this bill (0)
Neither the House nor the Senate has held a roll-call vote on this bill.
Cosponsors (3)
2 Democrats, 1 Republican. Each member is shown with the party they were counted with on the day they signed on. How we count these
Original cosponsors
- Ron WydenD-OR
Signed on later
- Susan M. CollinsR-MEJune 1, 2026
- Margaret Wood HassanD-NHJune 1, 2026