IRS notice management for tax firms: how AI drafts CP2000 and penalty responses for review

Where notice time goes

Notices arrive all year, long after the return was filed. The IRS Data Book for fiscal year 2025 shows 987,460 cases closed under the Automated Underreporter Program, the program behind the CP2000, with $5.9 billion in additional assessments. For tax year 2024 returns the IRS sent 951,789 notices for nearly 1.2 million math errors, and 403,059 of the 497,621 audits it closed were correspondence audits. A share of those letters reaches tax practices, often as a photo from a worried client.

Answers from the IRS side are slow, which makes each response count. In an AICPA survey reported by the Journal of Accountancy in July 2024, 63% of practitioners said the IRS took more than 90 days to give a substantive response to correspondence. In the AICPA's 2024 CPA Firm Top Issues survey, IRS challenges ranked second for firms with five or fewer professionals and fourth for firms with 11 to 20.

Inside the firm, each notice follows the same routine. Someone works out which notice it is and when the reply is due, finds the return and source documents, pulls a transcript if needed, compares the IRS figures with the return, writes the response and the client email, and sets a follow-up date. Much of that is lookup and comparison, which an agent can prepare. The practitioner and the client decide whether to agree. This guide is general information, not advice on a particular notice.

Reading a CP2000 line by line

A CP2000 proposes changes to a return because income or payments that third parties reported to the IRS do not match what the taxpayer reported. The IRS page on the notice tells the taxpayer to reply by the date listed and to say whether they agree or disagree, with supporting documentation. It names the IRS's online upload tool as the fastest way to send a reply.

Each item on a CP2000 can be checked. The notice lists each payer and form with the amount the IRS has on file, and the return either reports that amount somewhere or leaves it out. Two cases come up often. A 1099-B sale may already sit on Form 8949 with its cost basis while the IRS counted the gross proceeds as income, and 1099-K payments may already be inside Schedule C gross receipts. When an item was simply missed, a practitioner still checks the full proposed adjustment before recommending agreement. If other items on the return also need correcting, the IRS page says to complete a Form 1040-X and write CP2000 on top of it.

The agent's draft should show its work. For each item it proposes agree or disagree, quotes the figure from the notice, cites the line of the return or the source document that answers it and attaches the page. A practitioner checks the draft against the documents and reviews the proposed position with the client. The IRS page asks the taxpayer to complete and sign the response form, so the client or an authorized representative signs. When every item on the notice turns out to be right, the draft becomes a short agreement and the client email explains the balance due.

Penalty notices and the new automatic exemption

Penalty notices follow their own rules. Under First Time Abate, the IRS waives certain filing and payment penalties, including failure to deposit, for a taxpayer with a clean history over the three prior years. The request can be made by phone or in writing, including on Form 843. Checking that history against the client file is mechanical, and the agent can draft the request with the history laid out.

That process is changing. In news release IR-2026-83 on July 8, 2026, the IRS announced an Automatic Exemption from Penalty, expected to begin in summer 2026. It applies without a request for taxpayers with a history of timely filing and paying in the three prior years, starting with eligible original returns for tax year 2025 and 2026 quarterly returns. It replaces First Time Abate for eligible returns with original due dates on or after January 1, 2027. During the transition, some taxpayers may still receive penalty notices for eligible tax year 2025 and 2026 quarterly returns, and they can still ask for First Time Abate.

The agent checks the return type and tax period against the exemption before it drafts anything. Where the exemption should have applied, it flags the notice for a practitioner with the eligibility facts laid out. Where it does not apply, the agent checks the First Time Abate history and drafts the request. A practitioner decides what to send.

What the agent drafts and what the practitioner decides

The split follows Circular 230. Section 10.22 requires due diligence, and the OPR guidance of June 2026 says practitioners cannot rely solely on AI and should treat its written output as drafts. The agent prepares the file and the draft. A practitioner reviews every position with the client, and the client or an authorized representative signs.

Authority and the controls to set

The agent never logs in to IRS systems. Transcripts come from the Tax Pro Account or the Transcript Delivery System, pulled by a practitioner who holds the right authority. Form 2848 lets a representative act for the client before the IRS, and Form 8821 lets a designee receive the client's tax information without representing them. Once a transcript is in the file, the agent can read it.

A notice and the return behind it are tax return information, so this work falls under Section 7216 and the FTC Safeguards Rule like any other return work. Run the agent inside your firm's environment and list it in your written information security plan. The OPR guidance asks for enterprise-approved AI, and we bring notices in only after counsel confirms the Section 7216 exception that applies or the consent that is required. The Section 7216 guide in this series covers the design in detail.

Set these controls before the first notice runs through the agent:

• The reply date goes on the firm calendar the day the notice arrives, with a reminder well ahead of it.
• Every statement in a draft is tied to a page of the return or a source document.
• Nothing goes to the IRS or the client until a practitioner has reviewed it and the right person has signed.
• Identity verification letters, such as Letter 4883C, go straight to a person and are never answered from a draft.
• A log records each notice and draft with the person who approved the response.

Worked example: 40 notices a month

This is an illustrative example with assumed numbers, not a client result. Take a 60-person firm with about 3,000 individual and 300 business clients that handles 40 notices a month. Assume each takes 75 minutes today, from identifying the notice to setting the follow-up date. That is 50 staff hours a month, or 10 IRS notices and 12.5 staff hours a week on a four-week month.

With the agent, assume 28 of the 40 are routine, such as a CP2000 item already reported elsewhere on the return or a penalty that First Time Abate should cover. The practitioner's review and upload take 25 minutes each, so about 11.7 hours. The other 12, such as examinations and disputes that need research, stay at 75 minutes, another 15 hours. The month drops from 50 hours to about 26.7, which gives back about 23 hours a month, or close to 6 a week on a four-week month.

Be honest about the size. At this volume the saving stays under 10 staff hours a week, so notices fit best as a second workflow next to document collection, or as a first one for a firm with a tax resolution practice. The measures that matter more here are responses sent before the reply date and second notices avoided.

Where to start with notices

Count one month of notices by type before anything else, with the date each one reached the firm and the date the response went out. Record second notices too, and check whether each one followed a late response or an IRS processing delay.

Our five-day sprint builds a working prototype on sample notices and returns with made-up figures for $2,500, with a full refund if we do not find 10 staff hours a week.

Common questions