United States v. Clarke
The Supreme Court ruled that a taxpayer cannot get to question IRS officials about their motives for issuing a summons just by making a bare accusation of bad faith. The taxpayer must instead point to specific facts or circumstances that plausibly suggest the summons was issued for an improper reason.
The Court sent the case back to the Eleventh Circuit, which had allowed such questioning based on unsupported allegations alone. The decision resolves a split among the appeals courts and sets a uniform, modest evidentiary bar for challenging IRS summonses nationwide.
“The purpose of a summons is "not to accuse," much less to adjudicate, but only "to inquire."”
Explaining why summons enforcement proceedings must stay narrow and quick rather than full investigations.
How it got here: A district court ordered compliance with the IRS summonses; the Eleventh Circuit reversed, letting the taxpayers question IRS agents on bare allegations; the government sought Supreme Court review.
The Case in Depth
What happened
The IRS investigated a partnership's tax returns over large interest deductions and summoned four people connected to it for records and testimony after the partnership refused to extend the usual deadline for assessing taxes. The individuals refused to comply, suspecting the summonses were issued to punish the partnership or to get around limits on evidence-gathering in a related Tax Court case.
The question before the Court
If someone fights an IRS summons by claiming the agency had an improper motive, how much proof must they show before they can question the IRS agents themselves?
Why it matters
Taxpayers and other people who receive IRS summonses now know they need actual evidence — not just suspicion — before they can force IRS agents to sit for questioning about their motives. This keeps summons enforcement proceedings quick while still giving people a real, if narrow, chance to expose agency misconduct when they have something concrete to point to.
What changes now
The case returns to the Eleventh Circuit, which must now evaluate the evidence the individuals submitted under the correct legal standard — asking whether it plausibly suggests improper motive rather than applying its old rule permitting questioning based on bare accusations. The Supreme Court did not resolve the underlying legal questions about what specifically counts as an improper motive here, leaving those for the lower courts to address on remand.
What this does not decide
The Court did not decide whether the IRS's specific reasons here — enforcing summonses after Tax Court litigation began, or issuing them after a refusal to extend a deadline — were actually improper. It left those legal questions, and the ultimate outcome on remand, unresolved.
How the Court got there
The legal reasoning, step by step
- The Court explained that summons enforcement proceedings are adversarial, meaning the person being summoned can contest the summons and present evidence, but that these proceedings must stay 'summary in nature' rather than becoming full trials into IRS motives.
- The Court balanced the taxpayer's right to challenge a summons against the IRS's need for an efficient investigative tool, noting the agency normally only has to show good faith through a simple agent affidavit covering the Powell factors — legitimate purpose, relevance, non-duplication, and proper procedure.
- Applying that balance, the Court held that a person seeking to question IRS agents about their motives must point to specific facts or circumstances that plausibly suggest bad faith; circumstantial evidence can be enough, since direct proof of another person's improper motive is rarely available at this early stage.
- The Court found that a bare, unsupported accusation of improper purpose is not enough, but a fully developed case is not required either — only a plausible inference of improper motive drawn from actual facts.
- The Court concluded that the Eleventh Circuit had applied a different, categorical rule allowing questioning based on bare allegations alone, without ever assessing whether the specific evidence submitted actually supported an inference of bad faith.
- The Court also directed that on remand, the appeals court must give deference to the trial court's fact-based rulings under this new standard, but no deference on pure legal questions about what counts as an improper motive.
Doctrinal impact
Cases affected by this decision
Reaffirms United States v. Powell (379 U.S. 48)
The Court relies on and applies the same four-factor good-faith test for IRS summonses set out in this case.
Reaffirms United States v. Stuart (489 U.S. 353)
The Court again treats a simple agent affidavit as normally sufficient to show good faith for a summons.