What the notice means
A notice of deficiency is, in IRM 4.8.9.2's words, “a legal notice in which the Commissioner determines the taxpayer’s tax deficiency.” Its purposes are to comply with IRC 6213, formally notify the taxpayer of the intent to assess, and “inform the taxpayer of the opportunity and right to petition the Tax Court to dispute the proposed adjustments.” Letter 3219 is the version campus examination uses; the Taxpayer Advocate Service explains that the IRS issues “Letter 3219 (if your audit was conducted by mail) or Letter 531 (if you had an in-person audit).” Variants exist for nonfiler and substitute-for-return cases.
The package includes the examination report, Form 886-A explanations and Publication 3498-A. IRM 4.19.13.13 says the explanations are “standard (non-soliciting)”: unlike the 30-day letter, the notice does not ask for more documents.
Why the client got it
Campus examination follows a fixed sequence. IRM 4.19.13.13 states: “Contact was letter 525 (30 Day) with proposed report and no response was received” leads to “issue 90 Day, Notice of Deficiency, Letter 3219.” The same result follows when the taxpayer responded but the examiner was not persuaded and no agreement was reached. Typical background: an earlier Letter 566 asking for substantiation, then a Letter 525 with a Form 4549 report.
For a joint return, each spouse is mailed a separate copy. IRM 4.19.13.14.1: “ACE programs will issue a duplicate Letter 3219, Notice of Deficiency -Penalties or Additions to Tax, for each individual filer of a joint return. The notices are mailed separately to each filer, even if they both reside at the same address.”
Deadlines and what happens if they pass
| Clock | Length | Source |
|---|---|---|
| Tax Court petition | 90 days from mailing; 150 days if addressed outside the U.S. | IRC 6213(a) |
| Petition filed by the date on the notice | Treated as timely | IRC 6213(a) |
| Campus suspense before default | 105 days (certified mail, U.S.); 165 days (registered mail, foreign) | IRM 4.19.13.2.4 |
| Documents sent after the notice | Considered, but do not extend the petition period | IRM 4.19.13.11.2 |
If no petition is filed and no agreement is received, IRM 4.19.13.13 says: “After the suspense period has expired, close case as default.” The deficiency is then assessed. Paying without signing does not shortcut this: per Rev. Proc. 2005-18 as applied in IRM 4.19.13.13, “the case cannot be closed until the period for filing a petition with Tax court has expired and no petition was filed.”
How to respond
- Calendar the petition date printed on the notice and confirm it against the mailing date. Note it in the file for each spouse on a joint notice.
- Read the report. Identify each adjustment and the documents that would answer it. Compare to what was sent in response to Letters 566 and 525.
- If the client agrees, sign and return the Form 5564 waiver. Both spouses must sign for a joint return.
- If documents can still resolve it, send them to the campus address on the letter. The examiner will consider them, but IRM 4.19.13.11.2 tells examiners to explain: “You may continue to work with us to resolve your tax matter, but we cannot extend your time to petition the U.S. Tax Court.”
- If the dispute will not resolve in time, petition the Tax Court. A non-docketed Appeals transfer is no longer available. IRM 4.19.13.17: “Once a case is in status 24, it cannot be forwarded to Appeals as non-docketed. The taxpayer must petition tax court according to the instructions in the statutory notice of deficiency to be placed on a docket list.” See petitioning the Tax Court; smaller disputes may qualify for the small tax case procedure.
- Consider rescission only in narrow cases. Under IRC 6212(d) the IRS may rescind with the taxpayer's consent, for example where the notice was issued for the wrong taxpayer or period, or for an incorrect amount. IRM 4.8.9.30.3 says rescission will not be entered into if the petition period has expired or a petition has been filed.
What the IRS does next
If a petition is filed, assessment is barred until the decision is final, and the case is usually sent to Appeals for settlement (docketed Appeals). If the client signs the waiver, the campus assesses and a balance due notice follows. If documents arrive after the notice and do not change the result, the examiner sends Letter 555 with an explanation. If the period expires, the case closes as a default and the balance enters collection. After that, audit reconsideration is the administrative route for new information.
Related notices
- CP3219A: the Automated Underreporter's notice of deficiency.
- Letter 531: the notice of deficiency in field and office examinations (see the notice of deficiency).
- Letter 525: the 30-day letter that precedes it.
Questions practitioners ask
Can we still go to Appeals without petitioning?
No. Once the notice issues (status 24), IRM 4.19.13.17 says the case cannot go to Appeals as non-docketed. Petitioning puts the case on the docket, and docketed cases are generally referred to Appeals.
Will the examiner look at documents we send now?
Yes. IRM 4.19.13.11.2 directs examiners to consider new information and send Letter 555 if the report is unchanged, but the petition deadline does not move.
Is the small tax case limit $25,000 like the Appeals small case request?
No. The $25,000 figure is the Appeals small case request threshold (Publication 5). The Tax Court's S case procedure has its own limit; see the small tax case page.
The client paid the deficiency. Is the case closed?
Not until the petition period ends with no petition, unless the waiver is signed. IRM 4.19.13.13 applies Rev. Proc. 2005-18 to these cases.
Each spouse got a copy. Do both need to act?
Each spouse has an independent right to petition. Duplicate notices are mailed separately under RRA 98 section 3201(d).