U.S. Senator Bill Cassidy (R-LA) announced that President Trump has signed the Internal Revenue Service Math and Taxpayer Health (IRS MATH) Act into law. The new legislation is designed to improve the clarity of math and clerical error notices sent by the Internal Revenue Service (IRS), which are used to quickly adjust taxpayers’ returns.
“President Trump and I want Americans who play by the rules to keep their hard-earned income. An honest mistake on a tax return should be met with clear guidance from the IRS, not confusion. I appreciate President Trump’s partnership in making this a priority,” said Dr. Cassidy.
Under current law, the IRS can make “math error” corrections for simple mistakes or clerical errors on tax returns without providing a notice period or an immediate opportunity for taxpayers to challenge these adjustments in U.S. Tax Court. Taxpayers have 60 days to respond if they wish to contest such notices; otherwise, they lose their right to challenge and the IRS may proceed with its collections process.
Millions of Americans receive these math error notices each year, which often result in reduced tax refunds. Many recipients find the notices unclear because they do not specify what mistake was corrected or explain that there is only a 60-day window to dispute the adjustment. The general nature of these notices—often listing several possible errors instead of identifying the exact issue—can cause further confusion and lead to more errors in future filings.
The IRS MATH Act seeks to address these concerns by requiring clearer explanations in math or clerical error notices sent by the IRS. It also mandates a pilot program, coordinated with the National Taxpayer Advocate, to evaluate whether sending such notices via certified or registered mail would benefit taxpayers.
Cassidy had previously praised Senate passage of his bill in October, noting its potential impact on simplifying taxpayer interactions with the IRS following improvements during recent tax filing seasons.
