IRC 6303: Notice and Demand for Payment -- Assessment, Collection Trigger, and CSED Practitioner Guide

Last reviewed: July 2026  |  Practitioner Guide for EAs, CPAs, and Tax Attorneys

EAs, CPAs, Tax Attorneys
Practitioner-level depth
25+ Years
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Federal Collection Cluster
Statutory anchor guide
Scope of this guide: This guide covers IRC 6303(a), the IRS's statutory obligation to notify taxpayers of an assessment and demand payment within 60 days (per IRC 6303(a); verify at IRS.gov and in current IRC text). Topics include what the notice triggers, the lien attachment sequence, the CSED misconception, failure-to-pay penalty mechanics, notice defects and circuit-level defenses, and the distinction between the IRC 6303 notice and demand, the NFTL, and the CDP lien notice under IRC 6320. For the upstream assessment process that generates the tax liability that makes IRC 6303 operative, see our guide on IRC 6201 and 6211 tax assessment authority and deficiency computation. For the 10-year collection clock that starts on the assessment date, see our guide on IRC 6503 CSED tolling and suspension.

1. Overview: What IRC 6303 Does and Why It Matters

IRC 6303(a) (verify at IRS.gov and in current IRC text) is the statute that converts a silent administrative act -- the assessment -- into an enforceable demand the taxpayer must confront. Without it, a taxpayer would have no formal notice that the IRS has recorded a tax liability against them or that the failure-to-pay penalty clock has started. With it, the IRS satisfies its constitutional due process obligation to inform the taxpayer of the amount owed before initiating enforced collection.

The notice and demand is not, however, the document that starts most of the important legal clocks practitioners track. The assessment date -- not the notice-and-demand date -- governs: (1) the 10-year collection statute under IRC 6502; (2) interest accrual under IRC 6601; and (3) the attachment date of the federal tax lien under IRC 6322. What IRC 6303 does trigger are: (a) the failure-to-pay penalty under IRC 6651(a)(2), which does not begin to accrue until after notice and demand; and (b) the taxpayer's failure-to-pay that activates the IRC 6321 lien, which arises once assessment is made and demand is made but not satisfied.

Practitioners who conflate the assessment date and the notice-and-demand date expose their clients to miscalculated CSEDs, missed tolling arguments, and incorrect penalty abatement strategies. This guide draws the line between the two and explains what each document actually does.

2. The Statutory Requirement Under IRC 6303(a)

IRC 6303(a) (verify at IRS.gov and in current IRC text) states that after any assessment of a tax is made, the IRS must notify the taxpayer of the amount and shall demand payment. The notice must be: (1) given as soon as practicable, and within 60 days, after the making of the assessment; and (2) left at the dwelling or usual place of business of the taxpayer, or mailed to the taxpayer's last known address.

Three elements require close analysis in practice.

The 60-Day Window

The 60-day period is the outside limit, not a safe harbor. The statute requires notice "as soon as practicable, and within 60 days" -- meaning the IRS must act promptly and cannot simply hold the notice for the full 60 days as a matter of administrative convenience. In practice, the IRS typically mails the CP14 within three to four weeks of the assessment posting date. A notice mailed on day 61 or later raises a technical defect argument, though courts have not uniformly agreed on its consequence (see Section 5 of this guide).

Last Known Address

The IRS must mail the notice to the taxpayer's last known address. Treasury Regulations (verify current Treas. Reg. text at IRS.gov) generally define "last known address" as the address appearing on the most recently filed and processed return, unless the IRS has been given clear and concise notice of a different address before mailing. If a taxpayer files a return with a new address or sends the IRS a completed Form 8822 (Change of Address) before the CP14 is mailed, the IRS is obligated to use the updated address. Mailing to a superseded address is one of the more viable IRC 6303 notice defect arguments available to practitioners.

Amount and Demand

The notice must state the amount of the assessment and must demand payment. A notice that is ambiguous about the tax year, tax type, or amount assessed may be defective on its face. In practice, the CP14 satisfies this requirement by identifying the return period, the type of tax, and the balance due as of the notice date. Practitioners should verify that the amount on the CP14 matches the assessment amount recorded on the IRS transcript for the relevant period.

Practitioner Note: Last Known Address and Form 8822

If a taxpayer has recently moved, verify whether the IRS has the updated address on file before the notice and demand is issued. If the client timely filed Form 8822 or included a new address on a recently processed return, the IRS was on notice. A CP14 sent to the old address after clear notice of a change is a potential IRC 6303 delivery defect. Document the timeline carefully: when the address-change notification was received by the IRS (use the transcript), versus when the notice was mailed (use the CP14 notice date). Verify the current Treas. Reg. definition of "last known address" and the IRS's address-update procedures at IRS.gov and in current IRM guidance before raising this argument.

3. What the IRC 6303 Notice and Demand Triggers

The IRC 6303 notice and demand sits at the intersection of several separate legal events. Understanding precisely which clock each event starts -- and which statute governs each -- is the practitioner's core task in any collection matter.

3a. The Failure-to-Pay Penalty (IRC 6651(a)(2))

Under IRC 6651(a)(2) (verify at IRS.gov and in current IRC text), the failure-to-pay penalty accrues on any amount shown as tax on a return that remains unpaid after the date prescribed for payment. However, the penalty does not accrue on amounts that the IRS identifies through an assessment (as opposed to a return-shown amount) until after the IRS issues a notice and demand under IRC 6303. This means: for a balance shown on a self-filed return, the failure-to-pay penalty begins running when payment is due (not when the IRS issues the notice); but for an additional amount assessed after an examination or math error correction, the penalty does not start until after notice and demand. Verify the current penalty rate, abatement grounds, and the notice-and-demand trigger distinction at IRS.gov and in current IRC text.

3b. Federal Tax Lien Attachment (IRC 6321 and 6322)

Under IRC 6321 (verify at IRS.gov and in current IRC text), the federal tax lien arises when a person liable for any tax neglects or refuses to pay after demand. The lien attaches to all property and rights to property belonging to the taxpayer at the time of assessment (per IRC 6322) and to all after-acquired property. The sequence is: assessment (IRC 6201) creates the liability; notice and demand (IRC 6303) establishes the demand; the taxpayer's failure to pay after demand (IRC 6321) causes the lien to attach. Without a notice and demand, the "neglect or refusal to pay after demand" element under IRC 6321 is not satisfied. The lien's attachment date for priority purposes (IRC 6322) runs back to the assessment date -- not the notice-and-demand date -- once all conditions are met. See our guide on IRC 6201 and 6211 tax assessment authority for the upstream process.

3c. Interest Accrual (IRC 6601)

Interest under IRC 6601 (verify at IRS.gov and in current IRC text) accrues on unpaid tax from the last date prescribed for payment -- not from the date of assessment and not from the date of notice and demand. This means interest is running before the IRS issues the CP14. The IRC 6303 notice and demand does not start, stop, or reset the interest clock. A taxpayer who argues that interest should not have accrued before the CP14 was received misunderstands the IRC 6601 trigger. Practitioners disputing interest accrual should focus on the underlying due date, not the notice date.

3d. CDP Rights (IRC 6330 and 6320): What the IRC 6303 Notice Does NOT Trigger

The IRC 6303 notice and demand does not trigger Collection Due Process rights under IRC 6330 or IRC 6320. CDP levy rights under IRC 6330 are triggered by a separate pre-levy notice (Letter 1058 or equivalent). CDP lien rights under IRC 6320 are triggered by a separate notice the IRS must send within 5 business days of filing a Notice of Federal Tax Lien (NFTL). Neither CDP right arises from the CP14 or other IRC 6303 notice. Practitioners must track all three notice types separately. Missing a CDP hearing deadline (typically 30 days from the IRC 6330 or 6320 notice) forfeits the right to Tax Court review of collection alternatives. For a full analysis of CDP rights, see our guide on IRC 6330 and 6320 Collection Due Process.

Practitioner Note: Failure-to-Pay Penalty Start Date

For amounts assessed (not shown on the return) -- such as examination adjustments, math error corrections, or substitute-for-return assessments -- the failure-to-pay penalty under IRC 6651(a)(2) does not begin to accrue until after the IRC 6303 notice and demand is issued. If the IRS assessed additional tax but delayed issuing the notice and demand, a penalty abatement argument may be available for the gap period. Pull the transcript to compare the assessment date, the notice-and-demand date (usually the CP14 notice date), and the date through which the IRS computed the penalty. Verify all current IRC 6651 penalty computation rules and abatement grounds at IRS.gov and in current IRC text before relying on this argument.

4. IRC 6303 Notice and Demand: Legal Events Reference Table

The table below maps the key legal events in the assessment and collection sequence against the statute that controls each event and whether the IRC 6303 notice and demand is the trigger. Verify each statutory reference at IRS.gov and in current IRC text before relying on it in any client matter.

Legal Event Controlling Statute Triggered by IRC 6303 Notice? Practitioner Notes
Tax assessment formally recorded IRC 6201, 6203 No -- precedes the notice Assessment date is the clock-start for CSED and lien period; verify on IRS Account Transcript.
IRS issues notice and demand IRC 6303(a) This IS the notice Must be issued within 60 days of assessment (per IRC 6303(a); verify at IRS.gov); typically the CP14.
Interest accrual on unpaid tax IRC 6601 No -- runs from due date Interest begins running from the last date prescribed for payment, before any notice is issued.
Failure-to-pay penalty (assessed amount) IRC 6651(a)(2) Yes -- for assessed (not return-shown) amounts Penalty on amounts assessed after examination or correction does not begin until after notice and demand.
Federal tax lien attachment IRC 6321, 6322 Partial -- demand is required; failure to pay activates the lien Lien arises upon assessment; becomes operative after demand and taxpayer's failure to pay; priority date runs from assessment per IRC 6322.
CSED 10-year collection clock IRC 6502 No -- runs from assessment date Most common practitioner misconception; CSED is not triggered by or tied to the notice-and-demand date.
NFTL public filing IRC 6323 No -- separate IRS administrative action IRS may file the NFTL months or years after the IRC 6303 notice and demand; it is a public filing in the recording office, not a notice to the taxpayer.
CDP lien notice (NFTL-based) IRC 6320 No -- triggered by NFTL filing IRS must send the CDP lien notice within 5 business days of the NFTL filing; separate from the IRC 6303 notice and demand.
CDP levy notice (pre-levy) IRC 6330 No -- separate pre-levy notice required The IRS must issue a separate levy notice (Letter 1058 or equivalent) before levying; the CP14 does not satisfy this requirement.
Assessment statute of limitations IRC 6501 No -- runs from return filing date The IRC 6303 notice and demand has no effect on the period the IRS has to assess tax under IRC 6501; those are two separate statutes. See our IRC 6501 assessment SOL guide.
CSED tolling events IRC 6503 No -- independent events toll CSED Bankruptcy, OIC pendency, CDP hearings, TAS referrals, and other events toll the CSED under IRC 6503 independently of any IRC 6303 notice. See our IRC 6503 CSED tolling guide.
OIC as post-demand resolution IRC 7122 No -- OIC available after assessment and demand Once the IRC 6303 notice and demand is issued and the taxpayer does not pay in full, an OIC under IRC 7122 is one of the primary collection resolution tools. See our IRC 7122 OIC statutory framework guide.

5. Notice Defects: What Makes an IRC 6303 Notice Invalid and What the Consequences Are

Not every failure or irregularity in the IRC 6303 notice-and-demand process produces a legally significant defect. Courts and the IRS distinguish between defects that go to the substance of the notice and defects that are merely procedural. Practitioners raising notice-defect arguments should calibrate their expectations accordingly.

Content Defects

A notice that fails to identify the taxpayer, does not state the amount of the assessment, or does not demand payment may be challenged on content grounds. In practice, content defects are rare when the IRS uses the CP14, which is a computer-generated form designed to satisfy all IRC 6303(a) content requirements. More commonly, content issues arise in specialized assessment contexts -- jeopardy assessments, trust fund recovery penalty assessments, or assessments arising from Tax Court decisions -- where the IRS uses different notice formats. Practitioners should compare the notice received to the four core IRC 6303(a) content elements: taxpayer identity, assessment amount, demand for payment, and proper delivery method.

Delivery Defects: Wrong Address

Delivery to the wrong address is the most viable IRC 6303 defect argument available to practitioners. If the IRS mailed the CP14 to an address the IRS already knew was superseded, the notice may not satisfy the last-known-address requirement. The key is timing: the address is "last known" at the moment of mailing, not at some earlier or later point. A taxpayer who filed a return with a new address, or submitted Form 8822, before the notice was mailed has put the IRS on clear and concise notice of the address change. A notice mailed to the old address after that point is potentially defective.

Timing Defects: Late Issuance

A notice issued more than 60 days after the assessment date technically violates IRC 6303(a). The consequence of a late-issued notice is less settled. Courts have not uniformly held that a late notice voids the assessment or invalidates the lien; some have treated the 60-day window as directory rather than mandatory. Practitioners raising a timing defect should research the current position in the applicable circuit, as the consequence may be limited to challenging the start date of the failure-to-pay penalty rather than the assessment itself.

Effect on the Federal Tax Lien: Circuit Split

The most significant practitioner question is whether a defective notice and demand prevents the federal tax lien under IRC 6321 from arising. The circuit courts are not uniform on this question (verify current circuit precedent before relying on any position). Some courts have reasoned that because IRC 6321 requires a "demand" as a precondition to the lien, a defective notice and demand means the demand condition was never validly satisfied, and the lien never arose. Other courts have been more skeptical, particularly where the taxpayer had actual notice of the assessment through other channels. The IRS generally contests notice-defect lien challenges. This defense is strongest in circuits that have been most rigorous about notice-and-demand as a true prerequisite to lien attachment, and weakest where courts have treated actual knowledge as a substitute for proper notice. Practitioners must research their circuit's current rule before raising this argument in collection proceedings, Tax Court, or federal district court.

6. Distinguishing the Three Key Notices: IRC 6303, NFTL, and CDP

Practitioners working in the IRS collection space encounter three distinct notice categories that are related but legally separate. Confusing them produces missed deadlines and waived rights.

Notice 1: The IRC 6303 Notice and Demand (CP14)

The IRC 6303 notice and demand is the IRS's private administrative notice to the taxpayer that a tax has been assessed and payment is required. It is not filed anywhere in the public record. It does not give the IRS any new collection power; it is the prerequisite that converts the assessment into an actionable demand. The taxpayer's failure to pay after receiving this notice satisfies the "neglects or refuses to pay after demand" element of IRC 6321, making the lien enforceable against the taxpayer's property. Receipt of the CP14 does not trigger any hearing right or deadline the taxpayer must respond to in order to preserve legal rights.

Notice 2: The Notice of Federal Tax Lien (NFTL)

The NFTL is a public document filed by the IRS -- typically with the county recorder or state filing office -- to protect the government's priority against third parties under IRC 6323. The NFTL can be filed months or years after the IRC 6303 notice and demand. The NFTL does not create the lien; the lien already exists by virtue of IRC 6321. What the NFTL does is give constructive public notice to the four categories of protected third parties under IRC 6323(a) -- purchasers, security-interest holders, mechanic's lienors, and judgment lien creditors -- so that interests arising after the NFTL filing are junior to the government's lien. The NFTL is not sent to the taxpayer; it is filed in the public record.

Notice 3: The CDP Lien Notice Under IRC 6320

Within 5 business days after filing the NFTL (verify current timing at IRS.gov and in current IRC text), the IRS must send the taxpayer a separate written notice informing them of the NFTL filing and of their right to request a CDP hearing. This IRC 6320 CDP lien notice triggers a 30-day deadline (verify current deadline at IRS.gov) within which the taxpayer may request a hearing before the IRS Office of Appeals. Missing this deadline forfeits the right to a full CDP hearing with Tax Court review, though a later "equivalent hearing" (without Tax Court review) may still be available. The IRC 6320 CDP lien notice is the most time-sensitive document in this cluster. For a complete analysis of CDP hearing rights and strategy, see our guide on IRC 6330 and 6320 Collection Due Process.

Reference: Three Notices -- One Taxpayer, Three Different Consequences

IRC 6303 notice and demand (CP14): private IRS-to-taxpayer notice, no public record, no CDP rights, triggers failure-to-pay penalty accrual on assessed amounts and activates the "demand" element of the IRC 6321 lien.

NFTL filing: public record in the county or state office, no hearing right from the filing itself, perfects the IRS's priority against IRC 6323(a) protected third parties.

IRC 6320 CDP lien notice: sent to taxpayer within 5 business days of the NFTL filing (verify at IRS.gov), triggers a 30-day deadline to request a CDP hearing (verify current deadline at IRS.gov), carries the most urgent deadline of the three.

Verify all current notice timing rules and hearing deadlines at IRS.gov and in current IRC text before advising any client.

7. Practical Significance: Using IRC 6303 in Collection Defense and Resolution

7a. The CP14 as the Starting Gun for Resolution Strategy

Receipt of the CP14 is the practitioner's signal to act. The notice and demand is the IRS's formal invitation to resolve a balance due, and the 10-year CSED clock is already running (from the earlier assessment date). Practitioners who wait to respond until the IRS escalates to an NFTL or levy forgo months of resolution time. Immediately upon receiving a CP14 for a new client, practitioners should: pull the full IRS Account Transcript for the period at issue; verify the assessment date and compute the current CSED; identify any tolling events that may have extended the CSED (see our guide on IRC 6503 CSED tolling); determine the total balance including accrued penalties and interest; and advise on resolution options.

7b. Failure to Receive Notice and Demand: What It Does and Does Not Do

A taxpayer who claims they never received the CP14 is in a different position than one who received it but did not pay. Under the mailbox rule (verify applicable legal standard), a notice properly addressed and mailed is presumed delivered. The taxpayer can rebut this presumption with evidence that the notice was not actually received, but the burden is a practical one. More significantly: the taxpayer's failure to actually receive the IRC 6303 notice does not toll the CSED. The CSED runs from the assessment date regardless of whether the taxpayer received the notice. It also does not prevent the lien from arising, if the IRS can establish that it sent a valid notice and demand to the last known address. Practitioners should document the client's receipt (or non-receipt) history for each notice, but should not rely on non-receipt as a CSED tolling argument.

7c. IRC 6303 Defects as a Collection Defense

When a client faces enforced collection (levy, NFTL filing, or a Collection Due Process hearing) and the practitioner identifies a potential IRC 6303 defect, the defect may be raised: (a) in a CDP hearing as a basis to contest the appropriateness of the collection action; (b) in a federal district court action under IRC 7433 for unauthorized collection actions; or (c) as a defense in a lien priority dispute if the circuit's case law supports the position that a defective notice prevents lien attachment. The CDP hearing forum is most commonly used, because it preserves Tax Court review of the IRS's collection determinations, including whether a required notice was properly issued. For the range of collection resolution alternatives available once the IRC 6303 notice and demand has been issued and the client cannot pay in full, see our guide on IRC 7122 Offer in Compromise.

7d. The Assessment SOL and Its Relationship to IRC 6303

The assessment statute of limitations under IRC 6501 governs the IRS's window to assess additional tax. Once that window closes without a valid assessment, the IRS cannot assess the tax and therefore cannot issue an IRC 6303 notice and demand on it. Practitioners who identify that the IRS issued a notice and demand on an assessment that appears untimely under IRC 6501 should analyze the assessment date carefully. A late assessment is a complete bar to collection -- not merely a notice defect. For a full analysis of the assessment statute, see our guide on IRC 6501 assessment statute of limitations.

Practitioner Note: The CP14 Opens a Resolution Window -- Use It

The period between the CP14 and the first NFTL filing or levy notice is the most productive window for collection resolution. The IRS is required by internal procedures to work through a series of escalating notices before moving to enforced collection, which typically gives the practitioner 90 to 120 days (verify current IRS notice sequence at IRS.gov and in current IRM) after the CP14 to submit an installment agreement request, an OIC, a Currently Not Collectible (CNC) request, or other collection alternative. Filing a collection alternative request during this window typically places the account in a hold status that pauses enforced collection. Verify current IRS notice sequence, hold procedures, and collection alternative submission requirements at IRS.gov and in current IRM guidance before advising any client.

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8. Frequently Asked Questions: IRC 6303 Notice and Demand for Payment

The following questions address the issues practitioners and taxpayers most commonly raise about the IRC 6303 notice and demand. All statutory references should be verified at IRS.gov and in current IRC text before being relied upon in any client matter.

What does IRC 6303 require the IRS to do after making an assessment?
acceptedAnswer

IRC 6303(a) (verify at IRS.gov and in current IRC text) requires the IRS to notify the taxpayer of the amount of the assessment and to demand payment of that amount as soon as practicable, and within 60 days, after the making of the assessment. The notice must be left at or sent by mail to the taxpayer's last known address. The CP14 letter (Balance Due, No Math Error) is the most common IRS document that functions as the IRC 6303 notice and demand in practice. Verify all current IRC 6303 requirements, the definition of "last known address," and the current format of the CP14 at IRS.gov and in current IRC text before advising any client.

Does the failure-to-pay penalty under IRC 6651(a)(2) require a notice and demand?
acceptedAnswer

Yes. Under IRC 6651(a)(2) (verify at IRS.gov and in current IRC text), the failure-to-pay penalty on amounts assessed (as opposed to amounts shown on the return) does not begin to accrue until after the IRS has issued a notice and demand under IRC 6303. This is distinct from interest accrual under IRC 6601, which runs from the original due date regardless of notice. Practitioners contesting early penalty accrual on assessed amounts should verify the assessment date, the notice-and-demand date, and the penalty start date on the transcript. Verify current IRC 6651(a)(2) penalty trigger requirements at IRS.gov and in current IRC text.

When does the federal tax lien attach in relation to the IRC 6303 notice and demand?
acceptedAnswer

Under IRC 6321 and 6322 (verify at IRS.gov and in current IRC text), the federal tax lien arises when assessment is made and the taxpayer neglects or refuses to pay after demand. The lien's priority date runs back to the date of assessment, not the notice-and-demand date. The IRC 6303 notice and demand is the event that satisfies the "demand" precondition; the taxpayer's failure to pay after demand activates the lien against their property and rights to property. A defective or absent notice and demand may prevent lien attachment in circuits that treat notice as a true prerequisite -- though this is not a uniform rule. Verify all current lien-attachment requirements at IRS.gov and in current IRC text.

Does the CSED run from the notice and demand date or the assessment date?
acceptedAnswer

The CSED runs from the assessment date -- not the notice-and-demand date. Under IRC 6502 (verify at IRS.gov and in current IRC text), the IRS has 10 years from the date of assessment to collect by levy or court proceeding. The IRC 6303 notice and demand does not start, reset, or extend the CSED. This is one of the most common and consequential misconceptions in collection practice. Always pull the IRS Account Transcript to verify the exact assessment date, then apply all applicable IRC 6503 tolling events. Verify current IRC 6502 CSED rules at IRS.gov and in current IRC text before computing any collection deadline.

What constitutes a valid IRC 6303 notice and demand?
acceptedAnswer

Under IRC 6303(a) (verify at IRS.gov and in current IRC text), a valid notice and demand must: (1) identify the taxpayer; (2) state the amount of the assessment; (3) demand payment; and (4) be delivered to the taxpayer's last known address within 60 days of the assessment. "Last known address" is the address on the most recently filed and processed return, updated by any clear and concise address-change notification received by the IRS before the notice was mailed. Notices that miss any of these elements may be challenged, though the consequences of a defect are not uniform. Verify all current IRC 6303 content and delivery requirements at IRS.gov and in current IRC text.

Does a defective IRC 6303 notice invalidate the federal tax lien?
acceptedAnswer

Whether a defective IRC 6303 notice and demand prevents the federal tax lien from arising under IRC 6321 is a question on which the circuits are not uniform (verify current circuit precedent before relying on any position). Some courts have held that a valid demand is a true prerequisite to lien attachment, meaning a defective notice means the demand condition was never satisfied. Other courts have been more skeptical and allowed the IRS to rely on alternative evidence of actual notice. The IRS generally contests these arguments. The defect argument is strongest where the defect is documented (wrong address on record, late issuance) and the circuit case law is favorable. Verify the current state of the law with qualified legal counsel before raising this defense.

What is the difference between the IRC 6303 notice and demand, the NFTL, and the CDP lien notice?
acceptedAnswer

These are three legally distinct documents. (1) The IRC 6303 notice and demand (typically the CP14) is the IRS's private notice to the taxpayer that an assessment has been made and payment is required; it is not filed in the public record and does not trigger CDP rights. (2) The NFTL is a public filing in the county or state recording office that protects the IRS's lien priority against third parties under IRC 6323; it is not sent to the taxpayer and may be filed months or years after the CP14. (3) The CDP lien notice under IRC 6320 is a separate notice the IRS must send to the taxpayer within 5 business days of filing the NFTL, informing them of the filing and their right to a CDP hearing; this notice carries the most urgent deadline of the three. Verify all current notice timing requirements at IRS.gov and in current IRC text.

How does the CP14 letter function as the IRC 6303 notice and demand?
acceptedAnswer

The CP14 (Balance Due, No Math Error) is the IRS's standard computer-generated notice issued after an assessment is posted to the taxpayer's account. It identifies the tax year, the type of tax, and the balance due (including penalties and interest computed through the notice date), and it demands payment. The CP14 is typically mailed within a few weeks of the assessment date -- well within the 60-day window required by IRC 6303(a) (verify at IRS.gov). Upon receiving a CP14 for a client, practitioners should: pull the IRS Account Transcript to confirm the assessment date; compute the CSED; check for any tolling events under IRC 6503; determine the full balance including accruing interest; and advise on resolution options including installment agreements, CNC status, and OIC. Verify current CP14 procedures and IRC 6303 requirements at IRS.gov and in current IRM guidance.

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