The IRS Independent Office of Appeals is the only administrative forum where a Client can contest an IRS determination before paying. It is statutorily independent from Examination and Collection. Picking the right appeals pathway is decisive: a CDP hearing preserves Tax Court rights, an equivalent hearing does not. A formal written protest is required above $25,000, a small case request below. CAP is fast but waives Tax Court review. Get the choice wrong and the Client loses leverage permanently.
Examination Appeals (30-day letter). Pre-assessment dispute of proposed audit changes. Formal protest above $25,000, small case below. Preserves Tax Court rights via the 90-day letter that follows.
Collection Due Process (CDP) Hearing. Triggered by lien filing or final levy notice. 30-day deadline. Suspends collection. Preserves Tax Court review of Appeals determination.
Equivalent Hearing. Filed after the 30-day CDP deadline, within one year. Reviews the same issues but NO Tax Court rights. Does not automatically suspend collection.
Collection Appeals Program (CAP). Available for liens, levies, seizures, installment agreement terminations, OIC rejections. Fastest pathway. NO Tax Court review.
The 30-day letter is the IRS's formal notice that examination has concluded and proposes changes. It includes Form 4549 (audit report) and an explanation of appeal rights. The taxpayer has 30 days from the date of the letter to request appeals consideration. If no protest is filed, the IRS issues a 90-day Statutory Notice of Deficiency, which preserves Tax Court rights but eliminates the administrative appeal.
When the total additional tax and penalty proposed for each tax period is $25,000 or less, the taxpayer files a Small Case Request using Form 12203 or a brief written statement. This is the streamlined pathway. The protest does not need to be signed under penalty of perjury and does not require legal citations.
| Threshold Test (Per Tax Period) | Pathway |
|---|---|
| $25,000 or less in tax and penalty | Small Case Request - Form 12203 |
| More than $25,000 in tax and penalty | Formal Written Protest |
The threshold is per tax period - not aggregated. A taxpayer with $20,000 disputed for 2023 and $20,000 for 2024 files two small case requests, not one $40,000 formal protest. Employee plans, exempt organizations, S corporations, and partnerships are not eligible for the small case process regardless of amount.
Required for examination disputes over $25,000. The protest must include all of the following or it will be returned as deficient (IRM 4.24.10):
| Element | Detail |
|---|---|
| Taxpayer identification | Name, address, daytime phone, TIN |
| Statement of intent | "I want to appeal the IRS findings to the Independent Office of Appeals" |
| Copy of letter | The 30-day letter or proposed adjustment |
| Tax periods | Each year or quarter at issue |
| Items disputed | Specific changes the taxpayer disagrees with |
| Facts | Factual basis supporting taxpayer position on each disputed item |
| Law/authority | IRC sections, regulations, cases, or other authority relied upon |
| Penalties of perjury statement | "Under penalties of perjury, I declare that I examined the facts stated in this protest, including any accompanying documents, and to the best of my knowledge and belief, they are true, correct, and complete." |
| Signature | Taxpayer or authorized representative; Form 2848 attached if representative signs |
The IRS requires at least 365 days remaining on the statute of limitations when a case arrives at Appeals (IRM 4.24.10.3.4). For cases with less time, Appeals may decline jurisdiction and require the taxpayer to either sign Form 872 to extend the statute or proceed directly to the 90-day letter. Always check the statute when filing a protest late in the cycle.
CDP is the statutory protection against IRS lien and levy actions. Section 6320 governs Notice of Federal Tax Lien filings; §6330 governs Notice of Intent to Levy. The taxpayer is entitled to one CDP hearing per tax period per type of action. CDP rights attach when the IRS issues:
| CDP-Triggering Notice | Authority |
|---|---|
| Notice of Federal Tax Lien Filing and Right to Hearing | IRC §6320(a) |
| Final Notice of Intent to Levy and Right to Hearing (LT11, L-1058, CP90) | IRC §6330(a) |
Form 12153, "Request for a Collection Due Process or Equivalent Hearing," must be postmarked within 30 days of the CDP notice date. For lien notices, the period runs from 5 business days after the lien is filed; for levy notices, from the notice date itself. The form is mailed to the address shown on the CDP notice, not to Appeals directly.
| CDP Hearing Benefits (Timely Filed) |
|---|
| Suspends most levy actions during the hearing process under §6330(e) |
| Suspends the 10-year Collection Statute Expiration Date (CSED) under IRC §6502 |
| Allows Tax Court review of Appeals determination within 30 days |
| Allows challenge to underlying tax liability if no prior opportunity existed (§6330(c)(2)(B)) |
| Permits offer of collection alternatives: installment agreement, OIC, currently not collectible status |
Under §6330(c)(2), the taxpayer may raise any relevant issue including: spousal defenses, appropriateness of collection action, collection alternatives, lien subordination/discharge/withdrawal, innocent spouse claims under §6015. The underlying tax liability may be challenged only if the taxpayer did not receive a statutory notice of deficiency or did not otherwise have an opportunity to dispute the liability.
If the taxpayer misses the 30-day CDP deadline, an Equivalent Hearing may be requested within one year of the CDP notice (one year plus five business days for liens). Use the same Form 12153 but check Item 2. The equivalent hearing reviews the same issues but loses three critical protections:
| What Equivalent Hearing Loses vs Timely CDP |
|---|
| No automatic suspension of levy action |
| No suspension of the 10-year Collection Statute |
| No Tax Court review of Appeals decision (limited exceptions for innocent spouse and interest abatement) |
CAP is broader in scope than CDP and faster but waives Tax Court review entirely. Use CAP when speed matters more than judicial review rights. CAP is available for:
| CAP-Eligible Collection Actions |
|---|
| Notice of Federal Tax Lien filed or proposed to be filed |
| Levy or seizure (proposed or actual) |
| Lien subordination, discharge, withdrawal denial |
| Rejected, modified, proposed termination, or terminated installment agreement |
| Rejected Offer in Compromise (in some cases - DATL-based OIC rejection has CDP overlap) |
CAP procedure: first request a conference with the Collection manager (not required for installment agreement actions). If unresolved, submit Form 9423 to request Appeals review. CAP cases typically resolve within 5 business days of receipt by Appeals, compared to several months for a CDP hearing.
Use CDP when: The underlying liability is contested, Tax Court rights matter, multi-year exposure is significant, you want CSED suspension working in the Client's favor, and the 30-day deadline has not passed.
Use CAP when: A specific collection action threatens immediate harm (imminent levy of business bank account, proposed seizure), speed is more important than Tax Court review, or the CDP window has closed.
A rejected Offer in Compromise has its own 30-day appeals window separate from any CDP rights. The IRS rejection letter explains the appeal procedure. Submit Form 13711, Request for Appeal of Offer in Compromise, with detailed financial information. OIC appeals reach Appeals through the same office that processed the original offer.
The §6672 trust fund recovery penalty (the personal liability for unpaid employment taxes) has its own 60-day appeals window upon receipt of Letter 1153 and Form 2751. Submit a protest to the office shown on the letter. TFRP appeals are factually intensive - they turn on whether the person was "responsible" and acted "willfully" under §6672(a). Include affidavits from co-workers, signing authority documentation, and check-signing history.
Appeals offers several ADR alternatives to traditional appeals consideration:
| Program | When Available | Authority |
|---|---|---|
| Fast Track Settlement (FTS) | Examination/Collection cases before traditional appeals | Rev. Proc. 2003-40 |
| Fast Track Mediation | Specific Collection issues like OIC, TFRP | Rev. Proc. 2016-57 |
| Post-Appeals Mediation | After appeals consideration when settlement not reached | Rev. Proc. 2014-63 |
| Early Referral to Appeals | Specific unagreed issues before exam completion | Rev. Proc. 99-28 |
| Rapid Appeals Process (RAP) | Pilot expedited appeals consideration | Internal Appeals procedure |
When the 30-day CDP window is approaching and the case is incomplete, file Form 12153 timely with a brief statement of issues and request additional time to supplement. Better to file thin and supplement than to lose the window and the Tax Court forum.
A CAP appeal that is unfavorable can sometimes be withdrawn and refiled if the underlying collection action recurs. The 5-day Appeals processing means CAP is genuinely useful for repeat collection events when underlying compliance is ongoing.
Form 2848 must list the specific tax periods and tax forms at issue. A POA limited to Form 1040 will not cover trust fund recovery penalty representation. List every form and every period the appeals representation may need to address. See Publication 947 for full POA rules.
Many collection disputes can be resolved through informal manager review before triggering CDP or CAP. IRS employees are required to provide their manager's name and phone number on request (IRM 1.34.10). A 15-minute call to the manager often resolves what would otherwise become a multi-month formal appeal.
For CDP cases involving collection alternatives, attach Form 433-A (individuals) or Form 433-B (businesses) with the Form 12153. Including the financial statement at filing dramatically reduces Appeals processing time - the Settlement Officer can consider alternatives in the first call rather than scheduling a second contact for financial review.
Protests mailed directly to Appeals are returned. The protest must go to the originating office (Examination for 30-day letters; Collection for CDP/CAP). Always mail to the address shown on the IRS notice that triggered the appeal right.
Practitioners sometimes assume a one-month-late Form 12153 still preserves Tax Court rights. It does not. Equivalent hearings forfeit judicial review and do not suspend collection. The 30-day deadline is jurisdictional, not procedural.
A 30-day letter offers administrative appeal rights. A 90-day Statutory Notice of Deficiency offers judicial Tax Court rights only - no administrative appeal. Once the 30-day window closes and the 90-day letter is issued, the only remaining option is Tax Court within 90 days. Some practitioners file untimely protests on the 90-day letter expecting administrative review and inadvertently let the Tax Court window expire.
Formal protests above $25,000 require the under-penalties-of-perjury statement. Protests submitted without it are returned as deficient. The taxpayer or representative gets a chance to perfect, but valuable days are lost.
The §4980H (employer shared responsibility) penalty has different appeal procedures than income tax penalties. The §6707A (reportable transaction) penalty has its own appeals pathway. Penalty-specific appeals procedures often differ from the standard 30-day examination appeal. Check Publication 5 for the specific penalty's appeals rights.
| Action | Form | Deadline |
|---|---|---|
| Examination appeal, $25K or less | Form 12203 or written statement | 30 days from 30-day letter |
| Examination appeal, over $25K | Formal Written Protest | 30 days from 30-day letter |
| CDP hearing (lien) | Form 12153 | 30 days from CDP notice (after 5 business days from filing) |
| CDP hearing (levy) | Form 12153 | 30 days from final notice |
| Equivalent hearing | Form 12153 (check Item 2) | 1 year from CDP notice (1 year + 5 business days for liens) |
| CAP appeal | Form 9423 | Generally before collection action; 2 business days if action already taken |
| OIC rejection appeal | Form 13711 | 30 days from rejection letter |
| TFRP appeal | Formal protest | 60 days from Letter 1153 |
| Statutory Notice of Deficiency | Tax Court petition | 90 days from notice (150 if outside U.S.) |
| Tax Court review of CDP determination | Tax Court petition | 30 days from Appeals determination |
Primary authority: IRC §6320 (Notice of Federal Tax Lien rights), §6330 (Notice of Intent to Levy and CDP hearing rights), §6330(c)(2)(B) (underlying liability challenge), §6330(d)(1) (Tax Court jurisdiction), §6330(e) (collection suspension), §6502 (10-year Collection Statute), §6672 (trust fund recovery penalty), §6015 (innocent spouse relief), §6212 (Statutory Notice of Deficiency), §7521 (taxpayer interview rights). Commissioner v. Zuch, 605 U.S. ___ (2025) (CDP jurisdiction). Taxpayer First Act, P.L. 116-25 §1001 (renaming Office of Appeals to Independent Office of Appeals). IRS Publication 5 (Your Appeal Rights), Publication 594 (Collection Process), Publication 1660 (Collection Appeal Rights), Publication 947 (Practice Before IRS and Power of Attorney). Form 12153 (Rev. 7-2022), Form 12203, Form 9423, Form 2848. IRM 4.24.10 (Appeals Referral Procedures), IRM 8.22.1 (CDP Procedures).