IRS MATH Act of 2025

The IRS MATH Act of 2025 proposes to change how the Internal Revenue Service communicates with taxpayers regarding simple mistakes on their tax returns. Currently, if the IRS identifies a math or clerical error, it can assess additional taxes immediately. This bill would require the agency to provide much more detail in its error notices, including a clear description of the mistake, the specific line on the tax return involved, an itemized list of adjustments, and a clear deadline for the taxpayer to challenge the assessment.

If enacted, the bill would also require the IRS to establish formal procedures for taxpayers to request an 'abatement,' which is a cancellation of the tax assessment resulting from the error. The agency would be required to send a follow-up notice clearly explaining whether the request was granted and how the tax bill was adjusted. Additionally, the bill aims to improve delivery reliability by implementing a pilot program to send these error notices via certified or registered mail, rather than standard mail, to ensure taxpayers receive them in a timely manner.