Warren, Cassidy Pass Bipartisan Bill to Simplify IRS Error Notices for Taxpayers

Bipartisan bill now heads to the President’s desk to be signed into law
Washington, D.C. —The U.S. Senate has unanimously passed the Internal Revenue Service Math and Taxpayer Help (IRS MATH) Act, bipartisan legislation championed by Senators Elizabeth Warren (D-Mass.) and Bill Cassidy (R-La.), to simplify notices informing taxpayers of mistakes on their tax filings.
“No one should have to spend a fortune on a lawyer or hours trying to figure out what went wrong on their taxes when the IRS already knows the answer,”said Senator Warren. “Our bill is a common-sense bipartisan solution to protect taxpayers and help put more money in their pockets."
“Americans should have every opportunity to keep their hard-earned income,”said Dr. Cassidy. “If the IRS thinks someone made an honest mistake filing their taxes, the IRS should be clear about how to correct it.”
The IRS MATH Act ensures that when taxpayers make simple math or clerical errors on their taxes, the IRS sends them clear notices indicating where they made an error and laying out a 60-day appeal window.
The IRS MATH Act:
The U.S. House of Representatives passed the bill by voice vote in March. Representatives Brad Schneider (D-Ill.) and Randy Feenstra (R-Iowa) led the bill on the House side. The IRS MATH Act now heads to President Trump’s desk for his signature.
The bill alsopassedunanimously out of the House Ways and Means Committee during markup in February 2025. Senators Warren and Cassidy initially introduced the bill in118th Congress.
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