When a client forwards you a CP notice with the balance-due summary highlighted, the question is never just "how much do they owe." The question is where in the IRS pre-levy escalation sequence that notice sits, what legal authority the IRS currently has to act, and how many days remain before a statutory deadline closes. Getting the answer wrong at any stage of the CP501 through LT11 sequence carries real consequences: a missed CDP window eliminates the taxpayer's right to suspend levy through a Collection Due Process hearing, a misread CP504 that is treated as a final notice produces misplaced urgency, and a CP503 that goes unaddressed for two weeks brings the client one step closer to the notice that actually authorizes the IRS to touch their bank account.
This guide is written for enrolled agents, CPAs, and credentialed tax preparers who handle IRS collection cases. It covers the complete pre-levy notice sequence as a practitioner triage workflow: the legal meaning of each notice, the action it requires, the IRS unit behind it, the collection alternatives still available at each stage, and the Form 2848 first-response step that should be taken upon receipt of any notice in the sequence. Special attention is given to the distinctions that practitioners most commonly confuse: what CP504 can and cannot levy, the relationship between LT11 and Letter 1058, and why the CDP window belongs to LT11 and not to any earlier notice.
All procedural timelines, notice descriptions, and statutory citations in this guide should be verified at IRS.gov before relying on them in any specific case. Collection procedures and notice practices can change. The notice the client received is the controlling document; verify every date and statutory reference against the actual notice in hand.
The Pre-Levy Sequence: CP14, CP501, CP503, CP504, and LT11
The IRS does not levy without notice. Under IRC 6331(d) and IRC 6330, the IRS must provide the taxpayer with specific statutory notices before most levy action can begin. The standard pre-levy sequence moves through five notices in escalating order of urgency and legal consequence. Each notice is a distinct communication with a distinct legal effect. Knowing which notice a client has received tells the practitioner exactly where in the timeline the case sits.
CP14: First Balance Due Notice
CP14 is the IRS's first written notice that a balance is owed after the return is processed. It is not a collection notice in the formal sense; it is an account statement showing the assessed tax, penalties, and interest, with a payment due date. No CDP rights attach to CP14. The IRS issues CP14 when a balance remains after the return is processed or after an assessment is made. If a client presents you with a CP14 and no subsequent notices, the taxpayer is at the earliest stage of the collection sequence, the broadest range of resolution options is still available, and there is no CDP deadline running.
CP501: First Reminder Notice (Balance Due)
CP501 is the first formal reminder that the IRS sends when a CP14 balance remains unpaid. It restates the balance due and requests payment. CP501 does not carry levy authority and does not open any CDP window. It is a reminder notice. However, receipt of CP501 is a practical signal that the IRS's automated collection system has flagged the account and the escalation sequence is in motion. The practitioner who receives a client's CP501 should file Form 2848 immediately and contact the Practitioner Priority Service (PPS) line to confirm the account status and explore resolution options before the next notice in the sequence issues.
CP503: Second Notice (Balance Due, Urgent)
CP503 is the second reminder notice and uses more urgent language than CP501. The IRS characterizes CP503 as requiring response "within 10 days," though verify the specific language and any response deadline in the notice the client received, as the operative date is the one stated in the notice itself. CP503 still does not carry independent levy authority and does not open a CDP window. At the CP503 stage, the taxpayer is one notice away from CP504 and two notices away from LT11. The practitioner receiving a CP503 should treat it as a time-limited opportunity to resolve the account before the notice sequence reaches CP504 and then LT11.
CP504: Notice of Intent to Levy (State Tax Refund Only)
CP504 is where practitioner confusion most frequently occurs. CP504 is titled "Notice of Intent to Levy and Notice of Your Right to a Hearing." The statutory basis is IRC 6331(d). The levy authority granted by CP504 is real but specifically limited: CP504 authorizes the IRS to levy the taxpayer's state income tax refund. It does NOT authorize the IRS to levy bank accounts, wages, accounts receivable, retirement funds, or other property. State tax refund offset is the only levy action the IRS can take on the authority of CP504 alone. No additional warning is required before the state tax refund offset occurs once CP504 has been issued. The practitioner should advise the client to expect possible state refund offset immediately upon receipt of CP504, but should not alarm the client that bank accounts or wages are at immediate risk from CP504 alone.
LT11 / Letter 1058: Final Notice of Intent to Levy (Full Levy Authority)
LT11 (and its functional equivalent, Letter 1058) is the Final Notice of Intent to Levy and Notice of Right to a Hearing under IRC 6330. This is the notice that triggers the 30-day Collection Due Process window and, after that window closes without a timely CDP request, authorizes the full range of IRS levy action: bank account levy, wage levy, accounts receivable levy, and all other property except those specifically exempt under IRC 6334. The distinction between LT11 and CP504 in terms of levy authority cannot be overstated. The practitioner's response to LT11 is the most time-sensitive action in the entire collection notice sequence.
CP504 DOES NOT AUTHORIZE BANK OR WAGE LEVY. LT11 DOES.
CP504 authorizes only state tax refund offset. It does not authorize levy on bank accounts, wages, or other assets. LT11 (also issued as Letter 1058) is the notice that triggers full levy authority after the 30-day CDP window. Verify the specific notice in hand against current IRS.gov notice descriptions before advising a client on their levy exposure.
Which CP Notices Reach a Form 2848 Authorized Representative
A properly filed Form 2848 routes certain IRS communications to the authorized representative rather than solely to the taxpayer. Understanding which notices the IRS routes to the representative and which still go to the taxpayer affects how the practitioner learns about the notice sequence and when they can intervene.
Under the IRS's standard CAF protocol, collection notices in the CP series are generally routed to the authorized representative on record in addition to the taxpayer. This means that a practitioner with a current, properly filed Form 2848 registered through the CAF unit should receive copies of CP501, CP503, CP504, and LT11 at the representative's address listed on the form. However, this routing is contingent on the Form 2848 being current, having the correct address and CAF number registered, and the IRS having processed the authorization before the notice issues. The IRS does not hold notices pending Form 2848 processing; if the authorization is not registered when the notice issues, the practitioner may not receive their copy.
The practical implication: a practitioner who learns from a client that a CP notice arrived but was not forwarded to the practitioner should check the status of the Form 2848 authorization on the IRS Tax Pro Account immediately. A gap in coverage means other notices in the sequence may also have missed the representative. See the guide to Form 2848 power of attorney for tax preparers for CAF registration procedures and how to verify that an authorization is active.
FILE FORM 2848 BEFORE THE NEXT NOTICE IN THE SEQUENCE ISSUES
Any collection notice is a trigger to verify Form 2848 status. If the client is at the CP503 stage and no Form 2848 is on file, the practitioner risks not receiving the CP504 or the LT11. Not receiving the LT11 does not extend the CDP window; the 30-day clock runs from the date the IRS mailed the notice to the taxpayer's last known address. File Form 2848 through Tax Pro Account for the fastest registration, or use the standard CAF submission process. The Tax Pro Account option can provide immediate authorization while waiting for CAF processing.
CP503 Immediate Response: What Options Are Still Available
At the CP503 stage, the full menu of collection resolution options is still available. The IRS has not yet issued the CP504 and has not yet authorized any levy action. This is the practitioner's widest strategic window in the collection notice sequence, and it is the right time to assess which resolution path fits the client's circumstances before urgency forecloses options.
Full-pay or installment agreement
A client who can pay in full should pay in full to stop the sequence. A client who cannot pay in full but who can make regular payments is a candidate for a streamlined installment agreement (if the balance qualifies) or a standard installment agreement. Resolving the account with an approved installment agreement stops further collection notice escalation. See the guide to IRS installment agreements for the qualifying criteria, payment terms, and the formal IA request process that stops the notice sequence.
Dispute the balance
If the client believes the balance is incorrect (e.g., a payment was made and not credited, a return was misfiled, or the assessment reflects an error), the CP503 stage is the right time to submit the correction before the IRS shifts to active levy mode. The practitioner should pull the client's account transcript to verify what the IRS has on record, identify the source of the balance, and determine whether an amended return, audit reconsideration, or direct IRS contact is the appropriate correction mechanism.
Currently Not Collectible status
A client in genuine hardship who cannot pay the liability and lacks seizable assets may qualify for Currently Not Collectible (CNC) designation. CNC status temporarily halts collection activity, though the liability and interest continue to accrue. The practitioner should assess the client's income, assets, and allowable expenses against the Collection Financial Standards before requesting CNC. See the broader IRS collection alternatives decision framework for the CNC vs. IA vs. OIC analysis at each stage.
Offer in Compromise
If the client's reasonable collection potential (RCP) is less than the total liability (accounting for the remaining Collection Statute Expiration Date window), an Offer in Compromise may be the appropriate resolution. An OIC submitted before LT11 does not stop the notice sequence automatically, but it does signal to the IRS that an active resolution attempt is in progress, which may influence how aggressively the ACS proceeds. An OIC submitted after LT11 (but before the CDP deadline) can be addressed in the CDP hearing if the CDP request is timely filed. Verify current OIC pending status effects on collection at IRS.gov.
CP504: What the IRS Can Levy and What It Cannot Touch
CP504 is the notice that triggers the most frequent practitioner error in collection representation: treating it as if it authorizes the same levy action as LT11. The precise scope of CP504's levy authority is set by IRC 6331(f) and is specific. Understanding that scope prevents both over-alarming clients and under-preparing them for what comes next.
What CP504 authorizes: state tax refund levy only
CP504 authorizes the IRS to levy (offset) any state income tax refund owed to the taxpayer. This is the only asset class that CP504 independently authorizes the IRS to reach. If a client who has received CP504 is owed a state income tax refund, that refund is at immediate risk of IRS offset without further notice. No CDP window needs to close before the state refund offset can occur; once CP504 has been issued, the IRS may proceed with the state refund levy.
What CP504 does not authorize
CP504 does not authorize the IRS to levy bank accounts, wages, salary, commissions, accounts receivable, retirement accounts, or any other property beyond the state tax refund. A client who has received CP504 but not LT11 does not face imminent bank or wage levy. Advising a client that a bank levy is imminent based solely on a CP504 creates unnecessary alarm and may lead the client to take counterproductive action. The practitioner's role at the CP504 stage is to (1) advise the client of the state refund risk, (2) accelerate resolution efforts so that LT11 does not follow, and (3) verify the CSED to assess how much collection time remains.
CP504 does not open a CDP hearing window
CP504 includes language about the taxpayer's right to request a hearing, but it is not the notice that triggers the full Collection Due Process hearing right under IRC 6330. That right is triggered by LT11. Practitioners who advise clients to "request a CDP hearing" in response to CP504 are not creating the hearing protection they intend; the legally protective CDP request must be filed in response to the LT11 notice, within 30 days of the LT11 date. Verify the current IRS guidance on CP504 notice rights at IRS.gov.
LT11 and Letter 1058: The CDP Right, the 30-Day Clock, and Why Missing It Matters
LT11 is the final notice in the pre-levy sequence. Upon its receipt, the practitioner's most important task is to verify the date of the notice and calculate the CDP deadline. Everything else in the representation follows from whether the CDP window is still open.
LT11 vs. Letter 1058: same legal effect, different issuers
LT11 and Letter 1058 are both Final Notices of Intent to Levy under IRC 6330. They carry identical legal consequences and trigger the same 30-day CDP window. The practical difference is issuing unit: LT11 is typically issued by the IRS Automated Collection System (ACS) and mailed to the taxpayer's last known address by certified mail. Letter 1058 is typically issued by an assigned Revenue Officer and delivered by certified mail or hand delivery. When a Revenue Officer is involved in the case, the practitioner is likely dealing with Letter 1058 rather than LT11. The practitioner should treat either notice identically: the 30-day CDP window runs from the date of the notice, and that date is stated on the notice itself. Verify current IRS notice issuance practices at IRS.gov.
The 30-day CDP window: what it protects
A timely Collection Due Process hearing request (filed within 30 days of the LT11 or Letter 1058 date, on Form 12153) triggers two protections simultaneously. First, it suspends the IRS's levy authority during the CDP process: the IRS cannot levy the taxpayer's property while a timely CDP hearing request is pending before IRS Office of Appeals. Second, it gives the taxpayer (and the practitioner representing them) the opportunity to raise collection alternatives, challenge the underlying liability in appropriate circumstances, assert spousal defenses, and dispute procedural errors. A CDP hearing with a skilled representative is a meaningful intervention point in the collection process. See the detailed guide to Collection Due Process hearings for the Form 12153 filing procedure, the issues that can and cannot be raised in a CDP hearing, and the strategic use of the CDP process in collection resolution.
MISSING THE 30-DAY LT11 DEADLINE ELIMINATES CDP RIGHTS FOR THIS NOTICE CYCLE
If the taxpayer does not timely request a CDP hearing within 30 days of the LT11 date, they lose the right to a CDP hearing for that levy notice. They retain the right to request an Equivalent Hearing (generally within one year of the LT11 date), but an equivalent hearing does NOT suspend levy. The IRS can proceed with levy action while an equivalent hearing is pending. Verify current CDP and equivalent hearing procedures at IRS.gov before advising clients on their rights.
Equivalent Hearing vs. CDP Hearing: When the Deadline Has Passed
When a practitioner takes on a collection case after the LT11 30-day CDP window has already closed, the strategic landscape is different but not without options. The equivalent hearing is the primary appeal mechanism available after the CDP deadline passes, and it is worth requesting even though it does not carry the same levy protection as a timely CDP request.
What the equivalent hearing provides
An equivalent hearing is conducted by the IRS Office of Appeals and allows the taxpayer to raise the same substantive issues as a CDP hearing: collection alternatives, liability disputes (in appropriate cases), spousal defenses, and procedural challenges. The Appeals officer reviews the case under the same standard. The critical limitation is that an equivalent hearing request does not suspend the IRS's levy authority. Levy can proceed while the equivalent hearing is pending. The practitioner should take three parallel steps when the CDP window has passed: (1) request the equivalent hearing promptly (verify the applicable timeframe for filing at IRS.gov, as the deadline is generally within one year of the LT11 date), (2) immediately explore whether a collection hold can be obtained through other means (PPS supervisor escalation, installment agreement, CNC status), and (3) assess whether a TAS referral is appropriate if economic hardship is present and IRS channels are unresponsive.
Judicial review after a CDP hearing
A taxpayer who receives an adverse determination from a timely CDP hearing has the right to seek judicial review in the United States Tax Court (for liability issues, the Tax Court has de novo review; for other CDP issues, review is for abuse of discretion). An equivalent hearing determination is not directly reviewable by the Tax Court in the same way. This is an additional reason why preserving the timely CDP right through a prompt LT11 response is the practitioner's most valuable service in the collection notice sequence.
Form 2848 First: How to Intercept Future Notices and Establish Practitioner Contact
The single most important first step upon receiving any notice in the CP501 through LT11 sequence is filing Form 2848. Before evaluating the notice, before calling the PPS line, before advising the client on response options, the practitioner needs to establish their authorization on the IRS system so that all future communications route to the practitioner and so that the practitioner can speak to IRS representatives about the account.
File Form 2848 through the Tax Pro Account for immediate authorization
The IRS Tax Pro Account allows practitioners to submit Form 2848 electronically with the client's online IRS account confirmation, providing immediate authorization that does not wait for CAF unit processing. CAF unit processing can take several weeks during peak periods. When a CDP deadline is running or a CP504 has already issued, the practitioner cannot afford to wait for CAF processing to contact the PPS line. Use the Tax Pro Account authorization pathway when urgency requires immediate access. The standard CAF submission remains the backup option. See the guide to Form 2848 power of attorney for tax preparers for both the Tax Pro Account and the CAF submission procedures.
Specify collection as an authorized matter on Form 2848
Form 2848 requires the practitioner to specify the type of tax, the tax year(s), and the matters for which they are authorized. When representing a client in the collection notice sequence, the practitioner should list "Collection" as a matter type in addition to "Federal Tax Matters" for the relevant tax years. A Form 2848 that covers only "Federal Tax Matters" without specifying collection may limit the practitioner's ability to fully engage with ACS representatives on certain collection-specific issues. Verify the current Form 2848 instructions at IRS.gov for the correct completion of this field.
Confirm the CAF number and mailing address are current
Once Form 2848 is processed, the practitioner's CAF number and mailing address determine where IRS notices are routed. A practitioner who has changed office addresses since the last CAF update may not receive copies of future notices in the sequence. Verify the address and CAF information in the IRS e-Services portal and update as needed. An outdated CAF address is a common reason practitioners miss notice copies while the CDP clock is running.
ACS vs. Revenue Officer: How the Issuing Unit Changes the Resolution Path
The IRS unit behind the notice changes the practitioner's communication channel, the pace of the case, and the resolution leverage available. A CP501 through CP504 sequence typically originates from the Automated Collection System (ACS), which is a centralized phone-based collection unit. LT11 may originate from ACS or may signal that the case has been or is about to be transferred to a field Revenue Officer. Letter 1058, the functional equivalent of LT11, indicates Revenue Officer involvement from the outset.
Working with ACS
ACS is reached through the Practitioner Priority Service (PPS) line. Practitioners with a valid Form 2848 on file can call the PPS line to discuss the account, request a collection hold pending resolution, submit installment agreement requests, and obtain account information. ACS cases move on automated timelines; if the account is not resolved or a hold is not in place, the next notice in the sequence will issue automatically. An ACS representative can be asked for a short-term extension of time to submit financial documentation, but these holds are typically brief (verify current ACS hold procedures with the PPS representative). Supervisor escalation at ACS is available when a representative is unable to assist.
Working with a Revenue Officer
When a Revenue Officer (RO) is assigned, the case is in field collection. The RO has broader investigative authority than ACS: they can conduct in-person interviews, issue summonses, and investigate the taxpayer's financial situation in detail. The RO also has more discretion to negotiate on installment agreements, CNC status, and collection holds than the ACS automated system. Contact with an assigned RO should always be through the practitioner using the Form 2848 authorization. Advise clients not to discuss the collection case with the RO directly without the practitioner present. See the IRS levy and seizure representation guide for the Revenue Officer engagement and levy representation procedures when a field collection action is underway.
Resolution Strategy by Notice Stage
The notice stage determines which resolution options are most appropriate, which deadlines govern the case, and how urgently the practitioner must act. This section maps the primary resolution tools to each notice stage, with the understanding that a fuller analysis of each alternative is available in the IRS collection alternatives decision framework.
At CP14: Full option menu, no deadline pressure
Full pay, installment agreement, OIC preparation, CNC evaluation, and dispute of the underlying liability are all available at full strength. This is the lowest-urgency stage and the ideal time to engage. The practitioner should pull the account transcript, verify the assessment, confirm the CSED start date, and advise the client on which resolution path is appropriate given their financial situation.
At CP501: Accelerate toward a resolution agreement
All options remain available. The practitioner should now be actively pursuing a resolution rather than gathering information. An installment agreement submitted through the ACS/PPS channel can stop the sequence. If the balance is disputed, the correction should be in process. OIC submission is underway if appropriate. The practitioner should file Form 2848 if not already on file and confirm receipt via PPS.
At CP503: Close the resolution before CP504 issues
CP503 is the last notice before CP504 enables state refund offset. The practitioner should be in active contact with ACS through the PPS line, pursuing an installment agreement, CNC status, or other hold while a longer-term resolution is being finalized. If the balance is disputed, the correction or reconsideration request should be submitted with documentation. Verify the response deadline on the specific notice received.
At CP504: Protect against state refund offset; prevent LT11
Advise the client that state income tax refund offset is now at risk. Aggressively pursue a resolution agreement that will stop the sequence before LT11 issues. A formally accepted installment agreement or CNC designation stops the sequence. If those are pending, request an ACS hold through the PPS line. Do not treat CP504 as the final notice: LT11 follows if the account is not resolved, and LT11 carries full levy authority plus the 30-day CDP deadline.
At LT11: Determine CDP deadline immediately; decide whether to file Form 12153
Calculate the 30-day CDP deadline from the date of the notice. Evaluate whether a timely CDP hearing request serves the client's interests: a CDP hearing suspends levy and creates a forum to raise collection alternatives and other issues. If collection alternatives are being pursued that will stop the levy without a CDP hearing (e.g., an installment agreement that will be approved within the 30-day window), the practitioner must weigh whether a CDP filing is necessary. In most cases where the resolution is not yet secured, filing Form 12153 within the 30-day window is the appropriate protective action. See the full guide to CDP hearing procedure for Form 12153 completion and the issues that can be raised.
When to Request a Collection Hold: PPS Call Protocol and Documentation
A collection hold (sometimes called a "STAUP" code in ACS terminology) temporarily stops the automated notice sequence and gives the practitioner time to complete financial analysis and submit a resolution request. Collection holds are not automatic; the practitioner must request them through the PPS line, and they are granted at ACS discretion with a defined expiration window.
The PPS call: what to have ready
Before calling the PPS line to request a collection hold, the practitioner should have: the client's Social Security Number (or EIN if the liability is business-related), the tax year(s) and form type at issue, the Form 2848 CAF number confirming practitioner authorization, a brief statement of the resolution plan (e.g., "we are preparing a Form 9465 installment agreement request for submission within [X] days"), and the specific amount of time being requested. ACS representatives respond better to specific, credible plans than to open-ended requests. A hold requested with a clear plan and defined timeline is more likely to be granted than a general request for more time.
Document the hold and follow up
When a hold is granted, document the call: date, time, representative ID, hold duration, and any reference number provided. Holds expire; if the resolution is not completed before the hold expires, the sequence resumes automatically. Set a calendar reminder at least two weeks before the hold expires to either complete the resolution submission or call the PPS line to extend the hold if necessary. A lapsed hold without a completed resolution means the notice sequence restarts where it left off, and the next notice in the sequence will issue. See the guide to the Collection Statute Expiration Date (CSED) for how collection holds interact with the CSED clock. Verify how any specific hold type affects the CSED with the PPS representative at the time of the call.
Building a Notice-Triage Intake System for the ERO Practice
Practitioners who handle any volume of collection representation benefit from a standardized notice-triage process that activates the moment a client notifies them of a CP notice. Without a system, the practitioner depends on the client forwarding notices promptly and accurately identifying what they received. Both dependencies are unreliable. A notice-triage system converts an unstructured event into a defined workflow.
Client intake: the first question for every new collection client
When a new client presents with a balance due, the first question is not "how much do you owe?" but rather "what is the most recent IRS notice you have received, and what is the date on it?" The notice type and date determine whether the CDP window is open, whether levy authority has attached, and how much time remains to act. A client who received an LT11 three weeks ago is in a fundamentally different position than one who received a CP501 last month.
Pull the transcript immediately
After confirming the notice type, pull the client's account transcript through the IRS Transcript Delivery System (TDS) to verify what the IRS has on record. The transcript may show notices the client did not forward, levy actions already taken, payments not reflected in the notice, and the CSED start date for the relevant tax years. The account transcript is the authoritative source; the notice in hand is only one data point.
Notice log in the client file
Maintain a running notice log for every collection client: notice type, date issued, date received by client, date received by practitioner, action taken, and the deadline driven by the notice. This log is essential documentation if a CDP deadline dispute arises, if the client later claims the practitioner failed to respond to a notice, or if the case involves a question about when the 30-day LT11 window began.
Engagement scope specific to collection representation
The engagement letter for a collection representation matter should explicitly state the notice(s) covered, the scope of the practitioner's representation (e.g., CDP hearing, installment agreement, OIC preparation), the CDP deadline if one is running, and the client's obligation to forward all future IRS correspondence to the practitioner immediately upon receipt. A client who fails to forward an LT11 cannot later claim the practitioner missed the CDP deadline if the practitioner's engagement letter put the forwarding obligation on the client and the practitioner took reasonable steps to monitor through the CAF system. See the guide to collection alternatives and resolution strategy for the fuller framework that notice-triage feeds into.
Notice-to-Resolution Scenarios: Three Client Profiles
The following scenarios illustrate how the notice-triage framework applies to different client situations. These are illustrative examples, not guarantees of outcome; actual resolution results depend on the specific facts, financial data, and IRS determinations in each case.
Scenario A: The client who can pay but did not act
Client forwards a CP503. They have funds available but missed the CP14 and CP501. The practitioner files Form 2848 through the Tax Pro Account, calls the PPS line to confirm account status and hold the sequence, and facilitates direct payment or installment agreement setup with the client. Because the underlying ability to pay exists, the resolution is straightforward: pay or enter a formal payment plan before CP504 issues. The CSED is confirmed to ensure no tolling event has extended the statute. Case resolved before LT11.
Scenario B: The hardship client at CP504
Client arrives with a CP504. They are unemployed, have no significant assets, and cannot pay the liability. The state refund offset risk is real. The practitioner files Form 2848, pulls the account transcript, and immediately calls the PPS line to request a collection hold and begin a CNC evaluation. A Form 433-A (Collection Information Statement) is completed to document the hardship. If the CNC designation is approved before the state files the refund, the offset may not occur; if the state refund has already been applied, it reduces the balance. The client is advised that CNC status means the liability remains and interest continues to accrue, and that IRS may resume collection when income improves. The CSED is monitored.
Scenario C: The disputed liability client with an LT11 in hand
Client arrives with an LT11 that is 18 days old. The client disputes the underlying liability (a SFR assessment they did not know about). The 30-day CDP window is still open. The practitioner files Form 2848 immediately, files Form 12153 requesting a CDP hearing, and uses the CDP hearing to raise the liability dispute (since this is an SFR, the liability can be challenged in CDP). The levy is suspended while the CDP case is pending before IRS Appeals. Simultaneously, the practitioner obtains the client's income records to prepare the original return that will supersede the SFR, which will be filed once the CDP process establishes the correct liability. The CSED implications of the SFR assessment and the original return filing are analyzed and documented.
Regulated Claims and Verification Requirements
The following items in this guide require verification against current IRS sources before relying on them in any specific matter: (1) CP504 levy authority is limited to state tax refund offset and does not authorize bank, wage, or other property levy. Verify the current statutory basis and IRS CP504 notice description at IRS.gov. (2) LT11 and Letter 1058 trigger the 30-day CDP window. The 30-day period runs from the date of the notice as stated on the notice itself. Verify current CDP procedures at IRS.gov. (3) Missing the LT11 30-day deadline does not eliminate all rights; the taxpayer retains equivalent hearing rights, but those rights do not suspend levy. Verify current equivalent hearing procedures at IRS.gov. (4) CP503 response timelines: the operative deadline is stated on the specific notice received. (5) ACS collection hold procedures and durations are subject to change. Verify current procedures with the PPS representative at the time of any hold request. (6) Tax Pro Account immediate authorization availability: verify current Tax Pro Account features and processing at IRS.gov. (7) CSED tolling events: verify which tolling events apply to the client's specific situation at IRS.gov or IRM 5.1.19. This guide does not constitute legal advice.
Related Guides in the IRS Collection Cluster
The collection notice sequence feeds into a broader resolution workflow. The following guides cover the specific resolution tools, hearing procedures, and statutory frameworks that the notice stage determines:
- IRS Collection Due Process (CDP) Hearing Guide for Tax Preparers: Form 12153 completion, the issues that can be raised in a CDP hearing, and the levy suspension mechanics that begin with a timely LT11 response
- IRS Levy and Seizure Practitioner Representation Guide: what the IRS can levy after LT11, exempt property under IRC 6334, and the levy release and appeal procedures
- IRS Installment Agreement Preparer Guide: the installment agreement as the primary tool for stopping the collection notice sequence at any stage
- IRS Collection Alternatives Decision Framework: the strategic comparison of CNC, IA, PPIA, and OIC given the client's financial profile and the notice stage
- CSED and Collection Timing Guide: how the notice sequence and resolution events affect the IRS's 10-year collection window
- Form 2848 Power of Attorney Guide: the first step at every notice stage, including the Tax Pro Account authorization pathway for immediate CAF registration
Frequently Asked Questions
What is the difference between CP504 and LT11 levy authority?
CP504 and LT11 carry materially different levy authority. CP504 authorizes only state income tax refund offset. It does not authorize the IRS to levy bank accounts, wages, or other property. LT11 (also issued as Letter 1058) is the Final Notice of Intent to Levy under IRC 6330. It triggers the 30-day CDP window and, if no timely CDP request is filed, authorizes the full range of IRS levy action including bank and wage levies. Missing the LT11 30-day window eliminates CDP hearing rights; the taxpayer retains only equivalent hearing rights, which do not suspend levy. Verify current notice descriptions at IRS.gov.
Does CP504 open a CDP hearing window?
No. CP504 does not open the Collection Due Process hearing window under IRC 6330. The CDP window that suspends levy is triggered by LT11 (or Letter 1058), the Final Notice of Intent to Levy. CP504 includes a reference to a hearing right related to its state refund offset authority, but that is distinct from the full CDP right that attaches to LT11. Practitioners who conflate CP504 with LT11 risk missing the actual 30-day CDP deadline, which runs from the LT11 date, not from CP504. Verify current IRS guidance at IRS.gov.
What is the difference between LT11 and Letter 1058?
LT11 and Letter 1058 are functionally the same notice: both are Final Notices of Intent to Levy under IRC 6330 and both trigger the same 30-day CDP window. The difference is the issuing unit. LT11 is typically issued by the Automated Collection System (ACS). Letter 1058 is typically issued by a Revenue Officer. The practitioner should treat either notice identically: the 30-day CDP clock runs from the date stated on the notice. Verify specific IRS notice issuance practices at IRS.gov.
What is the first thing a practitioner should do upon receiving a client's CP collection notice?
The practitioner's first action upon receiving any notice in the CP501 through LT11 sequence is to file Form 2848 (Power of Attorney and Declaration of Representative) to authorize representation and route future notices to the practitioner. The fastest authorization method is through the IRS Tax Pro Account, which can provide immediate authorization without waiting for CAF unit processing. Next, pull the client's account transcript through TDS to verify account status, identify any notices already issued, and confirm the CSED dates. Then identify the notice stage and determine whether any CDP deadline is running.
What happens if a client misses the LT11 30-day CDP deadline?
If the taxpayer misses the 30-day CDP window without timely requesting a hearing, they lose CDP hearing rights for that notice cycle and the levy protection that comes with a timely CDP request. The taxpayer retains the right to request an Equivalent Hearing (verify the applicable filing period at IRS.gov), but an equivalent hearing does NOT suspend levy authority. Levy can proceed while the equivalent hearing is pending. The practitioner should still request the equivalent hearing promptly and simultaneously pursue a collection hold through the PPS line, an installment agreement, or CNC status to protect the client from active levy while the equivalent hearing is considered.