What an Income Tax Lawyer Can Do to Resolve Your Tax Litigation?

Практика:Finance

Автор : Donghoo Sohn, Esq.



Income tax litigation arises when the IRS or a state tax authority disputes your reported income, deductions, or tax liability, and the dispute escalates beyond the administrative process to court proceedings.



These disputes occur in parallel tracks: the IRS conducts an audit, you may petition the Tax Court before paying, or you pay and file a refund claim in federal district court or the Court of Federal Claims. Understanding which forum applies to your situation and what documentation you must preserve before litigation begins determines whether you can effectively challenge the government's position. The burden of proof in tax cases often shifts depending on the type of issue and whether you maintained adequate records during the audit.

Contents


1. How Income Tax Disputes Develop and When Litigation Becomes Necessary


Most income tax disputes begin with an IRS examination or state tax audit. The IRS sends a notice proposing adjustments to your return, and you have the right to respond and request a conference with the IRS Appeals Office. If you and the IRS cannot reach agreement through the administrative process, you face a choice: pay the disputed amount and sue for a refund, or petition the Tax Court without paying first. This procedural fork is critical because it affects where your case will be heard, the burden of proof, and the timeline for resolution.

Litigation becomes necessary when the stakes justify the cost and complexity, or when the legal issue is novel enough that appellate guidance may benefit future taxpayers. From a practitioner's perspective, many disputes settle during the administrative phase because both sides recognize the weaknesses in their positions once evidence is formally exchanged. However, cases involving aggressive IRS positions on valuation, business purpose, or characterization of income often proceed to court.

ForumWhen AvailableBurden of Proof
Tax CourtBefore paying the taxTaxpayer bears burden for most issues; IRS bears burden for penalties and certain adjustments
Federal District CourtAfter paying the tax and filing refund claimTaxpayer bears burden; jury trial available
Court of Federal ClaimsAfter paying the tax and filing refund claimTaxpayer bears burden; no jury trial; specialized tax expertise


2. Income Tax Litigation and Federal Tax Framework


Income tax litigation typically involves disputes over the proper interpretation of the Internal Revenue Code or Treasury Regulations. The IRS may challenge the amount of income you reported, the timing of income recognition, the allowability of deductions, or the characterization of transactions for tax purposes. Courts apply a three-tier standard of review: they defer to Treasury Regulations unless they are unreasonable, they review IRS guidance and administrative positions for consistency and reasonableness, and they interpret the statutory text using ordinary rules of construction.

Our firm handles disputes involving federal income tax matters across multiple forums. The complexity increases when the IRS asserts accuracy-related penalties or fraud penalties, because those assertions shift the burden of proof and require separate factual findings by the court. Penalties can add 20 to 75 percent to your tax liability, making penalty defense a critical component of litigation strategy.



3. Key Legal Standards in Tax Court and Federal Courts


Tax Court operates under a specialized procedural framework designed to resolve disputes efficiently without requiring the taxpayer to pay first. The court applies the burden of proof rule strictly: the IRS must prove its case by a preponderance of the evidence for most issues, but the taxpayer bears the burden for issues involving valuation, business purpose, or characterization of transactions where the taxpayer's intent is central to the legal conclusion. In practice, these disputes rarely map neatly onto a single rule because courts must examine the factual record and the statutory language together.



Burden of Proof and Substantiation Requirements


Your ability to challenge the IRS position depends directly on the records you maintained during the tax year in question. Tax Court requires contemporaneous written substantiation for many deductions and credits. If you lack adequate records, the court may disallow the deduction or credit entirely, even if you can testify that you incurred the expense. The IRS may propose adjustments based on statistical sampling or the Discriminant Index Function (DIF) score, but if the IRS cannot point to specific items or transactions, you have a stronger position to contest the adjustments.



Procedural Considerations in New York Federal Courts


If you choose to litigate in federal district court in New York, you must first pay the disputed tax and file a refund claim with the IRS. The IRS has two years to allow or deny your refund claim; if it denies the claim or does not act within two years, you may sue in the U.S. District Court for the Southern District of New York or in the Eastern District. The procedural requirement to exhaust the refund claim process before filing suit means that incomplete or untimely documentation of your loss or overpayment can delay resolution. Courts in the SDNY and Eastern District apply federal procedural rules and may require extensive discovery, making this forum more costly than Tax Court but potentially valuable if you seek a jury trial or if the factual record is complex.



4. Strategic Considerations for Taxpayers Facing Audit or Assessment


The decision to litigate income tax disputes should be made early in the administrative process, before positions harden and settlement opportunities narrow. You should evaluate whether the legal issue is one on which you have strong authority, whether the factual record supports your position, and whether the cost of litigation justifies the potential recovery or the precedential value of winning. Our firm advises clients on tax controversy and litigation strategy from the audit stage forward.

Before proceeding to litigation, ensure that all relevant documents are organized and preserved: contemporaneous business records, bank statements, emails, and expert reports on valuation or industry practice. If you received notice of the IRS position, verify that you filed any required petition or response within the applicable deadline. The procedural requirements in tax litigation are strict, and missing a deadline can result in loss of your right to contest the adjustment. Consider whether the IRS has taken a consistent position across similar transactions or whether its position conflicts with prior guidance or case law in your circuit.


30 Apr, 2026


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