What the notice means
The IRS page: “The CP3219N is a Notice of Deficiency (90-day letter)” and “If you want to challenge our proposed tax, you have 90 days from the date shown on your notice to file a petition with the Tax Court (persons outside the country have 150 days).” The deficiency is the same ASFR computation that appeared on the CP2566: tax from payer data at single or married filing separately rates, plus failure to file, failure to pay and estimated tax penalties.
In the IRM this is Letter 3219 with Form 5564, the ASFR 90-Day Letter; the response form is what the IRM calls the consent to assessment. IRM 5.18.1.6.6: “The 90-Day Letter is fully automated. The letter gives the taxpayer 90 days to respond,” and “The letter is sent by certified mail.” IRM 5.18.1.2 confirms the authority: “Statutory Notices of Deficiency are issued under authority of IRC 6212.” Under IRC 6213(a), no assessment of the deficiency may be made until the 90 or 150 days have run or, if a petition is filed, until the Tax Court decision is final.
The IRS phone script explains it to taxpayers this way (IRM 5.18.1.9.1.1): “Explain that the 90-Day Letter is the legal requirement for assessment of tax when a taxpayer fails to file a return.” Employees are told: “Do not advise the taxpayer on whether to petition or not.”
Why the client got it
IRM 5.18.1.6.6: “At the conclusion of 30-Day Letter suspense period, if there is no/insufficient response, ASFR requests TIF check 2 ... to ensure that ASFR processing should proceed. If a module passes the TIF check 2, ASFR generates a Statutory Notice of Deficiency (90–Day Letter).” So the client either did not respond to the CP2566, responded in a way the system did not accept (an unsigned return, a return without the Response form, a letter that did not establish non-liability), or the CP2566 never arrived. Check the account transcript: a TC 971 AC 143 marks the ASFR start, and the address the notices went to is on the entity.
IRC 6212(b) makes a notice mailed to the taxpayer's last known address sufficient whether or not it was received. The IRS page says a return filed in the last twelve weeks needs no further action, “but your time for filing a petition with the Tax Court is not extended by filing a return.”
Deadlines and what happens if they pass
| Date | What it controls | Source |
|---|---|---|
| Notice date | Start of the 90 or 150 day petition period | IRC 6213(a); notice page |
| Day 90 (or 150) | Last day to petition; weekends and D.C. holidays extend to the next business day | IRC 6213(a) |
| After the period | Default assessment requested systemically (status 104); TC 290, TC 495, TC 599 CC 088 | IRM 5.18.1.6.11.53 |
| Any time before default | Return accepted and assessed as filed (status 105) | IRM 5.18.1.6.11.54 |
| Three years from the due date | Refund statute: a return filed later cannot produce a refund | Notice page; IRC 6511 |
The IRS has no power to extend the petition deadline. IRM 5.18.1.9.1.1 instructs: “If a 90-Day Letter has been issued, explain an extension cannot be granted once the 90-Day Letter has been issued and encourage the taxpayer to file as soon as possible.” The IRS page says the same: “The IRS will accept your past due return, but you may experience significant delays if you file your return after the 90-day period has expired.” Use the petition deadline calculator and read the notice of deficiency page for the last-known-address and timely-mailing rules.
Rescission is possible but narrow. IRM 5.18.1.9.2.3.14.6 says a request under IRC 6212(d) must be made before the 90 or 150 days expire, cover the same period and the same deficiency and penalties, and go to the issuer; the IRS signs Form 8626 if it agrees. The same section notes that “Statutory notices of deficiency do not have to be rescinded when the taxpayer files an acceptable return during 90-day period.” In other words, the IRS will simply process the return.
Filing the return does not stop the 90-day clock, and the IRS does not have to finish processing the return before the clock runs. If the return will produce a liability materially below the proposed deficiency and there is any doubt the IRS will process it in time, the only way to preserve the right to contest the ASFR amount is a timely petition. The IRM tells employees not to advise on that choice; the practitioner has to.
How to respond
- Calendar the petition deadline from the notice date on day one and confirm the client's address situation: a notice sent to an old address may still be valid if it was the last known address.
- Prepare and file the real return. The IRS page says to file by the date on the notice if the client disagrees with the proposed assessment, and that a return for one of the past two years may be e-filed; otherwise complete the Response form and mail the signed return (both spouses on a joint return) with the notice in the envelope provided. The page adds: “If you want us to consider additional information, include it with your response form and return. The IRS will assess the amounts shown on your return.”
- If the client agrees with the proposal, sign and return the Response form (consent to assessment) and arrange payment; see installment agreements. Penalty relief under First Time Abate or reasonable cause can be requested separately.
- If the client is not required to file, call the number on the notice; IRM 5.18.1.9.1.1 has employees research for a joint return and otherwise request a signed copy or explanation.
- Decide on a petition before day 90. If the return has not been accepted and the proposed deficiency is wrong, file a petition and attach the notice; the IRS page gives the Tax Court's address and notes electronic filing through DAWSON. A disputed amount of $50,000 or less per year qualifies for small tax case procedures. Once docketed, the return can be provided to IRS Counsel or Appeals and the case usually settles on the return figures; see Tax Court petitions.
- If the deadline has already passed, file the return anyway. It will be processed as an ASFR reconsideration against the default assessment; see audit reconsideration and the request template. Collection of the assessed amount continues until the adjustment posts, so pair the return with a collection hold request or an installment agreement.
What the IRS does next
A return received during the 90 days is processed and the module closes in status 105, “Post 90 day letter, return secured”; IRM 5.18.1.6.11.54 says modules are updated to that status “when the taxpayer files a tax return after a 90 day letter was issued and an assessment has been input to IDRS based on the return.” If nothing is received, IRM 5.18.1.6.11.53 describes the default: “ASFR systemically requests a TC 290 tax assessment, TC 495, and TC 599 CC 088,” and the module closes in status 104. The assessed balance then moves into collection: a balance due notice, the CP501 and CP504 series, and eventually a final notice of intent to levy with CDP rights.
A return filed after default is worked as an ASFR reconsideration. IRM 5.19.2.6.4.3 routes those returns to consolidated ASFR reconsideration sites and notes the transaction codes that mark a defaulted ASFR module (TC 150 for .00 with the SFR literal, TC 494, TC 495, TC 290 and TC 599 cc 088). The reconsideration adjusts the assessment to the return; it does not reopen the Tax Court window. Because the substitute for return is not a return filed by the taxpayer, the IRS page warns that “To receive a refund, you must file the return within three years of the due date for the specific tax year.”
Related notices
- CP2566: the 30-day ASFR proposal that preceded this notice.
- Letter 3219 and CP3219A: notices of deficiency from examination and the underreporter program.
- CP518: the final return delinquency notice earlier in the sequence.
- CP14: the balance due notice after a default assessment.
Questions practitioners ask
The client mailed the return two weeks after the CP3219N. Do we still need to petition?
The return does not extend the deadline, and the IRS does not commit to processing it within the 90 days. If the ASFR amount is materially wrong and the return has not posted as the deadline approaches, a petition is the only way to keep the deficiency from being assessed as proposed.
Can the IRS extend the 90 days?
No. IRM 5.18.1.9.1.1 says an extension cannot be granted once the 90-day letter has issued. Rescission under IRC 6212(d) is possible only by agreement before the period ends and is rarely used for ASFR cases.
What does the Response form do?
Signing it as agreement is a consent to assessment that permits immediate assessment of the proposed amount. Sending it with a return identifies the return as the ASFR response so it is routed to the ASFR unit.
The deadline passed and the tax was assessed. Is the client stuck with the ASFR number?
No. File the return; it is processed as an ASFR reconsideration and the assessment is adjusted to the return. Collection continues in the meantime, so address that separately. A refund is only possible if the return is filed within the IRC 6511 period.
Does the CP3219N copy the representative?
Only if the authorization is on the ASFR system. IRM 5.18.1.6.5 says a duplicate 30-day letter goes to a POA updated to ASFR; send Form 2848 with any response and confirm it was recorded.
Is the small case procedure available?
Yes if the amount in dispute, including penalties, is $50,000 or less for the year. The IRS page points to the Tax Court's simplified procedures.