Most tax problems start quietly. A letter arrives asking about a deduction from three years ago. A payroll deposit gets missed during a slow quarter. A deal closes, and nobody checks how the other company handled its state filings. None of it feels like a legal matter at the time, yet any of these can end up in front of a judge. A seasoned corporate tax lawyer reads these situations differently from a finance team, because the first question is not only what is owed, but where the dispute is likely to go and how to keep your position intact if it gets there.
This guide explains how an ordinary tax issue turns into litigation, where a company still has room to act, and what legal counsel actually does at each stage.
How a Routine Tax Matter Escalates
Few tax disputes begin in court. They begin with an examination, usually prompted by a return that looks out of step with industry norms, a large refund claim, or figures that do not match what third parties reported to the IRS. The agent sends information requests. The answers are reviewed, and if the agent disagrees with a position, a proposed adjustment follows.
From there the road narrows. A company can agree, or it can take its case to the IRS Independent Office of Appeals. If nothing is resolved, the IRS issues a notice of deficiency, often called the 90-day letter. That date matters because the company generally has 90 days to petition the U.S. Tax Court. Miss it, and the tax is assessed. Once assessed, the IRS can file liens, levy bank accounts and pursue collection. A question about one deduction has become a dispute with a hard deadline, with interest running the whole time.
Penalties deserve attention too. A 20 percent accuracy-related penalty applies to many understatements, and where the IRS alleges fraud, the civil fraud penalty reaches 75 percent of the underpayment. How a company behaves in the first months of an examination often decides which of those conversations it ends up having.
Situations That Most Often Turn Into Litigation
1.Poorly documented or aggressive positions
Valuation-heavy deductions, large credits, and unusual classifications of workers or expenses draw the most scrutiny. The IRS challenges positions it considers unsupported, and missing records made at the time of the transaction are frequently the weakest point in the defense.
2. Payroll and trust fund taxes
Withheld income and employment taxes are held in trust for the government. When a business falls behind, the IRS can assess the trust fund recovery penalty against individuals who controlled payments and acted willfully, including officers, owners and sometimes bookkeepers. A corporate problem becomes a personal one very quickly.
3. Mergers, sales and restructurings
Reorganizations, spin-offs and asset sales depend on specific rules to get the tax treatment the parties intended. If the structure fails, buyer and seller often disagree about who carries the exposure, and indemnity claims follow. A buyer can also inherit the unpaid tax liabilities of the company it acquires.
4. State and local exposure
Since the Supreme Court’s 2018 decision in South Dakota v. Wayfair, states can require out-of-state sellers to collect sales tax based on economic activity alone. Many companies found their filing obligations were wider than they assumed. State audits can reach back several years and are handled through separate procedures, deadlines and courts.
5. Cross-border operations
Transfer pricing between related entities, foreign tax credits and information returns for foreign subsidiaries attract close attention. Penalties for missed international reporting can apply even when no additional tax is due.
6. Claims inside the company
A tax assessment can also set off civil claims. Shareholders may allege that directors failed in their oversight. Lenders may assert covenant breaches. Insurers may contest coverage. These disputes often run alongside the tax case and can complicate it.
Why Timing and Privilege Change the Outcome
Many business owners assume that anything said to their accountant is confidential. It is not that simple. Attorney-client privilege protects legal advice. Federal law extends a limited privilege to certain tax advice from CPAs and other authorized practitioners under Section 7525, but it applies only in noncriminal tax matters and does not cover the preparation of a return. Sensitive questions sent to an outside accountant by email may be reachable by the government.
A corporate tax lawyer can bring accountants and valuation experts into a matter under an engagement structured so their work supports legal advice, an arrangement commonly called a Kovel arrangement. Counsel also controls what the company says to examiners. Statements made by employees in interviews can be quoted back in later proceedings, so who speaks, what is provided and in what form are decisions worth making deliberately.
Deadlines carry the same weight. The IRS generally has three years from the filing date to assess additional tax, extended to six years when more than 25 percent of gross income was left off a return, with no limit in cases of fraud. Agents sometimes ask a company to extend the period. Whether to agree is a strategic call, and it should not be made on the phone in the middle of an audit.
What a Corporate Tax Lawyer Does at Each Stage
- Before a dispute: reviews transactions, documents the reasoning behind tax positions, and tests how those positions would hold up if examined.
- During an audit: manages information requests, prepares witnesses, narrows the scope of the examination and keeps it from widening.
- At Appeals: presents the legal arguments and an honest assessment of litigation risk to the settlement officer.
- In court: chooses the forum. The Tax Court lets a company contest a deficiency without paying first. A refund suit in district court or the Court of Federal Claims generally requires paying the tax and then suing to recover it. Each forum has different judges, procedures and precedent.
- In collection: negotiates installment arrangements and offers in compromise, and uses Collection Due Process hearings when a lien or levy is threatened. Those rights come with strict deadlines.
- When criminal exposure is possible: in rare cases an examiner who suspects fraud will suspend the audit and refer the file. Counsel recognizes the warning signs and keeps the company and its people from making statements that cannot be taken back.
Protecting Directors, Officers and Owners
Corporate tax disputes rarely stay on the corporate side of the line. Personal liability for trust fund taxes is the best-known example, but officers can also face questions about signed returns, and directors may be named in shareholder claims after a large assessment. A lawyer who looks at the whole picture can identify where individual interests and company interests diverge, and recommend separate counsel when they do.
Mistakes That Make a Tax Dispute Worse
- Ignoring or delaying a response to an IRS notice, since many notices carry short deadlines.
- Letting staff talk to an agent without guidance on what to say.
- Filing amended returns in a hurry without understanding how they affect the examination.
- Calling a lawyer only after the petition deadline is close or has passed.
- Relying on records that were assembled after the fact rather than at the time of the transaction.
Choosing the Right Lawyer
Look for someone whose practice is tax controversy rather than general business law. Courtroom experience matters, as does familiarity with your industry and with the jurisdictions involved. Directories that vet their members can shorten the search. The Leaders in Law directory of tax lawyers lets you filter by practice area and jurisdiction, which is useful for companies operating in more than one state or country.
Before the Letter Arrives
Tax disputes seldom announce themselves as lawsuits. They show up as letters, requests and deadlines. Companies that bring in counsel while a matter is still administrative keep options that disappear once a case is filed. If your business has received a notice, is planning a significant transaction, or has noticed gaps in its filings, a conversation with a corporate tax lawyer now is far easier than one held after a deadline has passed.
This article is for general information only and is not legal advice. Tax rules vary by jurisdiction and change over time.
