Tax Court Practice for Tax Professionals — Advanced Practitioner Guide

Tax Court Practice for Non-Attorneys

Non-attorney tax professionals — CPAs and EAs — can be admitted to practice before the U.S. Tax Court under Tax Court Rule 200. To be admitted, a non-attorney must: (1) pass the Tax Court non-attorney exam; (2) demonstrate good moral character; and (3) pay the admission fee. Once admitted, non-attorneys have the same practice rights as attorneys in Tax Court — they can file petitions, conduct discovery, try cases, and file briefs.

Discovery in Tax Court

Discovery in Tax Court is more limited than in federal district court. The Tax Court rules allow: (1) requests for production of documents; (2) interrogatories (written questions); (3) depositions (oral testimony under oath); and (4) requests for admissions. However, discovery in Tax Court is rarely as extensive as in district court — most Tax Court cases are resolved through stipulations and settlement rather than extensive discovery.

Stipulations: The most important discovery tool in Tax Court is the stipulation process. The parties are required to stipulate (agree on) all facts that are not genuinely in dispute. Stipulations reduce the issues at trial and allow the judge to focus on the genuinely disputed facts and legal issues. Practitioners should approach the stipulation process aggressively — stipulating to as many facts as possible reduces trial time and cost.

Informal discovery: Before formal discovery, practitioners should obtain all relevant IRS documents through the IRS's administrative file (the "exam file" and "appeals file"). These files contain the examiner's workpapers, the taxpayer's returns, and the IRS's analysis of the issues. The IRS is required to provide these files to the taxpayer's representative upon request.

Trial Preparation and Strategy

Most Tax Court cases settle before trial — but practitioners must prepare for trial as if the case will go to trial. The threat of a well-prepared trial is often the most effective settlement tool. The following trial preparation steps are essential:

Witness preparation: All witnesses (including the taxpayer) must be thoroughly prepared for trial. Preparation includes: (1) reviewing the witness's expected testimony; (2) practicing direct examination questions; (3) preparing the witness for cross-examination; and (4) explaining Tax Court procedures and decorum. Unprepared witnesses are the most common cause of lost Tax Court cases.

Exhibit preparation: All documentary evidence must be organized, labeled, and pre-marked as exhibits. The Tax Court requires exhibits to be submitted in advance of trial. Practitioners should prepare a comprehensive exhibit list and ensure that all exhibits are properly authenticated.

Legal research: Tax Court cases are decided on the law and the facts. Practitioners must research the applicable law thoroughly — including Tax Court decisions, circuit court decisions, and IRS guidance. The Tax Court is not bound by circuit court decisions, but it gives significant weight to decisions from the circuit to which the case would be appealed.

Case Study: Tax Court Trial Victory — Home Office Deduction

Client profile: Kevin M., age 47, self-employed software consultant. The IRS disallowed $28,000 in home office deductions for 2021-2022, arguing that Kevin's home office did not qualify as his "principal place of business" under IRC §280A. The IRS issued a Notice of Deficiency for $9,800 in additional tax plus penalties.

Trial strategy: The practitioner filed a Tax Court petition and prepared for trial. The key issue was whether Kevin's home office was his "principal place of business" — the IRS argued that Kevin's clients' offices were his principal place of business. The practitioner prepared: (1) a detailed log showing that Kevin spent 80% of his working time in his home office; (2) testimony from Kevin about his work habits and the nature of his home office use; (3) photographs of the home office showing that it was used exclusively and regularly for business; and (4) legal research showing that the "principal place of business" test focuses on the relative importance of the activities performed at each location and the time spent at each location.

Result: The Tax Court ruled in Kevin's favor, finding that his home office was his principal place of business because he performed his most important business functions (software development, client communication, business administration) in his home office. The $28,000 deduction was allowed in full. The accuracy-related penalty was also abated. Kevin saved $9,800 in tax plus $1,960 in penalties.

Frequently Asked Questions