Disagree With an IRS Audit? Your Appeal and Litigation Options.
Disagreeing with an IRS auditor’s proposed changes can feel like the end of the road. It usually is not.
There is also no single path every taxpayer follows after an audit. Your options depend on where you are in the process, the notice or determination you received, the deadlines involved, whether the IRS has assessed the tax, and whether you have already paid.
Two taxpayers who both disagree with their audit results may have very different options for challenging those findings.
This article explains the main paths available after an IRS audit, including administrative Appeals, U.S. Tax Court, and refund litigation. If you have only recently received an IRS letter, start with our earlier article on what to do before responding to an IRS notice.
Start by Identifying Where You Are in the IRS Process
Before deciding whether to pursue Appeals, Tax Court, or refund litigation, identify the document you received.
Look for:
The notice or letter number, often beginning with CP or LTR
The tax year or periods involved
Whether the IRS is proposing changes, assessing additional tax, or collecting an existing balance
Any response or filing deadline
Whether you have already signed an examination report or settlement agreement
These distinctions matter.
A proposed examination adjustment is not the same as a statutory notice of deficiency. A notice of deficiency is not the same as a collection notice. And disputing whether you owe additional tax is different from negotiating how to pay a balance that has already been assessed.
Not every IRS adjustment follows the standard deficiency process, either. For example, certain mathematical or clerical errors may be addressed through a math-error notice rather than a notice of deficiency. These notices have their own procedures, including a generally applicable 60-day period to request abatement.
The first step is understanding exactly what the IRS has sent you and what rights and deadlines apply.
Your Options While an IRS Examination Is Still Open
If your audit is ongoing, or an examiner has proposed changes but the case has not closed, you may still have opportunities to resolve disagreements directly with the IRS.
Understanding an IRS Examination Report
At the conclusion of many audits, the IRS prepares a report of examination changes, often using Form 4549 or a similar document.
The report generally outlines proposed adjustments to tax, penalties, and interest. Those figures reflect the examiner’s position, but they are not necessarily the final outcome.
Before signing any examination report or agreement, it is important to understand what the document actually does.
For example, signing certain examination agreements or waivers may allow the IRS to assess the agreed tax without following the usual statutory notice of deficiency process. However, that does not necessarily eliminate every opportunity to pursue a refund claim later.
Other documents, including certain Appeals settlement agreements, can create more significant finality or restrict future challenges to agreed issues.
The consequences depend on the specific document, not simply whether you signed something during the audit.
Having the agreement reviewed before signing can help you understand which options you may be giving up and which may remain available.
Discussing Disputed Findings With the Examiner
Sometimes disagreements can be addressed directly with the examining agent or the examiner’s manager.
This may be particularly useful when an issue involves missing documentation, a misunderstood transaction, or an apparent calculation error.
However, informal discussions should not be confused with formal appeal rights.
Speaking with an examiner or manager, or submitting an administrative protest, should not be assumed to suspend or extend a statutory Tax Court filing deadline.
A deadline to respond to an examination letter and a statutory deadline to petition Tax Court serve different purposes. Taxpayers should observe the applicable deadline unless a legally effective extension, suspension, or other statutory rule applies.
Weiler & Rees represents individuals and businesses in IRS audits and examinations. Addressing disputed issues early can help establish a clearer record, whether the matter ultimately settles or proceeds to further review.
Appealing an IRS Audit Through the Independent Office of Appeals
One common option after an examination is requesting review by the IRS Independent Office of Appeals.
Appeals provides an administrative forum for resolving many tax disputes without litigation. Although it operates within the IRS, it is structured to provide independent consideration of disagreements arising from examination.
What Is an IRS 30-Day Letter?
In many examination cases, taxpayers who disagree with proposed adjustments receive a letter explaining how to request an Appeals conference.
This is commonly called a 30-day letter because it typically provides a limited response period, often 30 days.
However, a 30-day letter is not guaranteed in every examination.
Depending on the circumstances, including the time remaining under the applicable assessment limitations period, the IRS may issue a statutory notice of deficiency without first providing a full pre-assessment Appeals opportunity.
The notice you actually receive determines your available response procedures and deadlines.
Small-Case Appeals Requests vs. Formal Written Protests
IRS Publication 5 explains the general requirements for requesting Appeals review.
The type of request generally depends on the total amount in dispute for each tax period, including proposed tax adjustments and penalties. The rules also account for proposed decreases and claimed refunds.
Small-case request: If the total amount in dispute for each tax period is $25,000 or less, you may qualify for a simplified Appeals request. Form 12203, Request for Appeals Review, is one way to submit that request.
Formal written protest: If the amount in dispute exceeds $25,000 for any tax period, a formal written protest is generally required for the periods involved.
A formal protest generally includes:
A statement requesting Appeals consideration
Identification of the tax periods and disputed issues
An explanation of why you disagree with the IRS findings
The facts supporting your position
Applicable law or other authority, where relevant
Required identifying information and a signed penalties-of-perjury declaration
Not every disagreement requires a complex legal argument. Some disputes turn primarily on facts, records, or the IRS's interpretation of a transaction.
Protests should be submitted according to the instructions in the IRS letter explaining your appeal rights. Sending a protest to the wrong office may delay review or create deadline problems.
What Happens During an IRS Appeals Conference?
An Appeals officer evaluates the disputed issues, considers the taxpayer's position and supporting documentation, and may assess the strengths and weaknesses of each side's arguments, including potential litigation risks.
The objective is to determine whether the dispute can be resolved administratively.
Taxpayers may generally represent themselves or work with an authorized representative, such as an attorney, CPA, or enrolled agent.
Learn more about how Weiler & Rees assists clients with IRS tax appeals.
Taking an IRS Dispute to Court
If a dispute cannot be resolved administratively, or if the IRS issues a notice that provides access to judicial review, litigation may become an option.
However, Tax Court and refund litigation are different procedures. The appropriate path depends on the notice, the type of tax, payment status, and applicable filing requirements.
Challenging a Notice of Deficiency in U.S. Tax Court
A statutory notice of deficiency, commonly called a 90-day letter, is an important document in federal tax disputes.
Under Internal Revenue Code Section 6213(a), a taxpayer generally has 90 days from the mailing of the notice to petition the United States Tax Court.
The period is generally 150 days when the notice is addressed to a person outside the United States.
The statute also contains rules concerning weekends, legal holidays, and the last filing date stated in the notice.
A timely petition generally allows a taxpayer to challenge the asserted deficiency in Tax Court before paying the disputed tax.
Missing the filing deadline ordinarily jeopardizes that opportunity.
Courts have disagreed about whether the statutory deficiency-petition deadline is jurisdictional and whether equitable tolling may be available in certain circumstances. Even where equitable tolling is legally possible, it requires a fact-specific showing and should not be treated as a routine extension.
For practical purposes, taxpayers should plan to file within the applicable statutory deadline rather than rely on an exception.
A timely Tax Court petition may also provide an opportunity to resolve the dispute through settlement while the case is pending.
Weiler & Rees represents clients in U.S. Tax Court proceedings when litigation is the appropriate path.
Refund Litigation: Challenging Tax After Payment
In some circumstances, a taxpayer may pursue a refund suit rather than a prepayment Tax Court case.
For a typical federal income-tax refund suit, this generally requires:
Paying the disputed tax in full, subject to exceptions that may apply to certain divisible taxes
Filing a proper and timely administrative refund claim with the IRS
Meeting the applicable requirements and deadlines for filing suit
Bringing the refund action in a United States district court or the United States Court of Federal Claims
Refund litigation has its own timing rules.
Under Internal Revenue Code Section 6511, administrative refund claims are subject to statutory filing deadlines and limitations.
Under Section 6532(a), a refund suit generally cannot begin until six months after the administrative claim is filed, unless the IRS disallows the claim earlier.
Once the IRS mails a notice of claim disallowance, a separate two-year deadline generally applies to filing suit. IRS reconsideration of a denied claim does not, by itself, extend that deadline.
These requirements make refund litigation a distinct legal strategy, not simply the next automatic step after an unsuccessful appeal.
The amount at stake, ability to pay, type of tax, and available defenses all affect whether pursuing a refund suit makes practical sense.
Our tax controversy and litigation practice helps clients evaluate these options and determine which forum may be appropriate.
Disputing an IRS Tax Liability Is Different From Resolving a Collection Problem
An audit disagreement generally concerns whether additional tax is owed or how much the taxpayer owes.
A collection matter, on the other hand, often involves an assessed balance that the IRS is attempting to collect.
If the IRS has begun collection activity, such as filing liens or issuing levies, different notices, deadlines, and procedural rights may apply.
Depending on the circumstances, options may include installment agreements, Currently Not Collectible status, or an Offer in Compromise.
Collection appeal procedures also have important limitations. A collection appeal does not automatically provide a new opportunity to dispute an underlying tax liability that the taxpayer previously had an opportunity to challenge.
For a closer look at payment and collection options, see What If You Owe the IRS but Can't Afford to Pay?.
Understanding whether your dispute concerns the underlying tax or the collection of that tax is essential to choosing the appropriate next step.
When Should You Contact a Louisiana Tax Attorney?
Not every disagreement with an IRS audit requires litigation or extensive legal representation.
Some relatively straightforward issues can be resolved through documentation, communication with the examiner, or an administrative appeal.
Other situations may warrant legal assistance earlier in the process, particularly when:
The proposed tax adjustment is substantial
Multiple tax years or business entities are involved
Payroll taxes or complex transactions are disputed
Significant penalties have been proposed
An Appeals protest or Tax Court filing deadline is approaching
The examination raises potential fraud or willfulness concerns
You have signed an agreement and are unsure how it affects your rights
An experienced tax attorney can evaluate the procedural posture of the dispute, identify relevant deadlines, and help determine whether administrative resolution or litigation is appropriate.
Frequently Asked Questions About IRS Audit Disputes
Do I Have to Go Through IRS Appeals Before Tax Court?
Not necessarily.
If you receive a valid statutory notice of deficiency, you generally may petition Tax Court within the applicable filing period without first completing an administrative Appeals conference.
In other circumstances, Appeals may be the appropriate option before a notice of deficiency is issued.
The available path depends on the notice and the stage of the case.
Does Interest Continue While I Dispute an IRS Audit?
Generally, yes.
Interest on unpaid tax typically accrues from the prescribed payment date until payment, even while a dispute is pending.
Certain deposits or other procedures may affect interest calculations, but their availability and consequences depend on the circumstances.
Can I Challenge IRS Penalties Even if I Agree With the Tax Adjustment?
Sometimes.
Depending on the particular penalty and applicable procedures, a taxpayer may be able to accept an underlying tax adjustment while disputing an associated penalty.
Reasonable cause and other defenses may be available for certain penalties, but they do not apply universally. The appropriate defense depends on the penalty involved and the facts of the case.
What if I Already Signed an IRS Examination Report?
The answer depends on what you signed.
Some examination agreements or waivers permit assessment without the usual deficiency-notice process while leaving certain refund procedures available.
Other settlement agreements may impose stronger restrictions on future challenges.
Before assuming you have lost the right to dispute the matter, have the specific document and procedural history reviewed.
What About Louisiana State Tax Audits?
Louisiana Department of Revenue examinations and appeals follow state procedures that differ from the federal IRS system.
This article focuses on federal tax disputes. Taxpayers facing both state and federal issues should evaluate the procedures and deadlines separately.
Need Help Disputing an IRS Audit?
Disagreeing with an IRS audit does not necessarily mean you must accept the proposed changes. But the options available to you depend on the stage of the case, the documents you have received, and the deadlines that apply.
Weiler & Rees represents individuals and businesses in IRS audits, administrative appeals, Tax Court proceedings, and other federal tax controversies.
With offices in New Orleans and Mandeville, our attorneys help clients evaluate disputed tax liabilities, understand their procedural options, and develop a strategy suited to their circumstances.
Contact Weiler & Rees to discuss your IRS audit or tax dispute.
This article is provided for general informational purposes only and does not constitute legal or tax advice. IRS procedures, deadlines, and available options depend on the facts of each matter, the particular notice or determination involved, and applicable law. Consult a qualified tax professional about your specific situation.
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