This bill makes IRS letters about math or clerical mistakes on your tax return clearer and more useful. If the IRS spots a mistake, the notice must explain the exact error in plain language, point to the specific line on your return, and show an itemized list of any changes to your income, deductions, credits, and refund or amount owed. The notice must also give the phone number for the automated transcript line and clearly show the last day you can ask the IRS to remove the charge if you disagree. The overall goal is to help people understand what changed and what to do next.

If the IRS later cancels or reduces the charge (an abatement), it must send a follow-up letter that explains what changed and shows the updated numbers. The IRS must also offer ways to request an abatement by mail, online, by phone, or in person, and will test sending some notices by certified or registered mail with e‑signature, then report what works to Congress.

• Who is affected: People who get IRS notices about math or clerical mistakes on their tax returns.
• What changes: Clearer notices with the exact line and an itemized breakdown; the deadline to ask for a fix shown in bold near your address; a follow‑up notice if charges are canceled; and multiple ways to request a fix (abatement) .
• When: The new notice rules apply to notices sent 12 months after the law is enacted. Abatement request procedures must be set within 180 days, and the certified‑mail pilot must start within 18 months.