Most tax audit guidance focuses on preparation: what to expect, what documents to gather, how to survive the examination itself. Far less attention goes to what happens once the audit actually concludes. Yet the period after an audit closes is often just as consequential as the audit itself. It determines whether you accept the findings, dispute them, and how quickly you can move past the process. At MBP Global, we work with businesses through every stage of the audit lifecycle, including the often overlooked aftermath. Here's what typically happens once an audit wraps up, and how to navigate it.

How an Audit Actually Concludes

Tax audits typically end in one of three ways: a "no change" determination, where the auditor finds the original filings accurate and no adjustment is needed; an agreed adjustment, where the taxpayer accepts the auditor's proposed changes; or a disputed adjustment, where the taxpayer disagrees with some or all of the findings and pursues a formal challenge.

Regardless of outcome, the audit typically concludes with a formal notice, often called a Revenue Agent Report (RAR) at the federal level, or an equivalent notice of proposed assessment at the state level, that details the auditor's findings, any proposed adjustments to tax liability, and any proposed penalties. This notice isn't the final word. It's the starting point for the next phase of the process.

Understanding the Findings Before You Respond

Before deciding how to proceed, it's worth taking the time to fully understand what the auditor is proposing and why. Audit findings typically fall into a few categories:

Adjustments to taxable income or tax base. The auditor may have disallowed certain deductions, reclassified income, adjusted exemption claims, or found unreported transactions.

Penalties. Beyond the additional tax owed, auditors frequently propose penalties for underpayment, for negligence, for substantial understatement of tax, or for specific documentation failures (such as missing exemption certificates in a sales tax context). Penalty amounts can sometimes rival or exceed the underlying tax adjustment itself, particularly in cases involving multiple years or significant discrepancies.

Interest. Interest typically accrues on any additional tax owed from the original due date, which means the longer a dispute takes to resolve, the larger the eventual interest component can become. This is a factor worth weighing when deciding whether to dispute a finding or move to resolve it quickly.

Reviewing each proposed adjustment individually, rather than treating the audit report as a single, all or nothing outcome, often reveals that some findings are more defensible than others. It's common for businesses to accept certain adjustments while formally disputing others.

If You Agree With the Findings

If the audit findings are accurate and you agree with the proposed adjustments, the path forward is generally straightforward: sign the agreement (such as an IRS Form 870 at the federal level, or the equivalent state form), pay the additional tax, penalties, and interest, or arrange a payment plan if the amount owed is significant.

Even when agreeing with the underlying tax adjustment, it's worth specifically evaluating whether proposed penalties can be reduced or abated. Many tax authorities offer penalty relief for reasonable cause, situations where the taxpayer can demonstrate the underpayment resulted from circumstances beyond their control rather than negligence or willful disregard of the rules. This is a distinct process from disputing the underlying tax finding, and it's often underutilized simply because taxpayers assume penalties are non negotiable once assessed.

If You Disagree With the Findings

When you disagree with some or all of the audit findings, you generally have a defined window, often 30 days from the date of the notice, though this varies by jurisdiction, to file a formal protest or appeal. Missing this window can forfeit your right to dispute the findings through the administrative process, making it one of the most important deadlines in the entire post audit process.

The appeals process typically involves:

Filing a written protest. This document lays out specifically which findings you're disputing and why, ideally supported by additional documentation, legal authority, or factual clarification that wasn't fully considered during the original audit.

An independent review. Most tax authorities route disputed findings to a separate appeals or protest division, distinct from the original audit team, specifically to provide a fresh, independent look at the disputed issues.

Negotiation or settlement. Many disputes are resolved at this stage through negotiation, particularly when the disagreement involves interpretation of ambiguous facts or gray area tax positions rather than a clear cut error.

Formal litigation, if necessary. If the administrative appeals process doesn't resolve the dispute, the next step is typically formal litigation, in tax court, or the relevant state court system, though this represents a small minority of disputes, since most are resolved administratively.

Practical Considerations During the Post Audit Period

A few practical factors are worth keeping in mind as you navigate this phase:

Time limits matter enormously. Both the deadline to file a protest and any applicable statute of limitations on further examination are strict, and missing them can significantly limit your options. Track every deadline the moment you receive the audit report.

Partial agreement is often the most efficient path. Rather than accepting or disputing an entire audit report as a package, evaluating each finding individually and pursuing agreement on defensible adjustments while appealing genuinely disputed ones often resolves matters faster and with less cost than an all or nothing approach.

Documentation continues to matter after the audit closes. If you're pursuing an appeal, the quality and organization of supporting documentation you provide during the appeals process directly affects your chances of a favorable outcome, much as it did during the original audit.

Consider the cost benefit of disputing smaller adjustments. For minor, defensible but not clearly wrong adjustments, the cost and time involved in a formal appeal may outweigh the benefit, particularly if interest continues to accrue during the dispute.

The Bottom Line

An audit notice isn't the final word on your tax liability. It's the opening position in a process that includes real opportunities to review, dispute, and negotiate the findings. Understanding your options after an audit concludes, respecting the deadlines that govern the appeals process, and evaluating each finding on its own merits can significantly affect the ultimate outcome, both financially and in terms of how quickly you can move past the process.

At MBP Global, we help businesses navigate every stage of the audit lifecycle, from initial preparation through post audit review, appeals, and resolution. If you've recently received audit findings and aren't sure whether to accept, negotiate, or dispute them, a careful review of the specific findings is the right next step before any deadline passes.