Tax Court Denies Whistleblower Award Despite Claim of Key Role in Billion-Dollar Tax Shelter Crackdown

The $8 Billion Whistleblower Claim: A Taxpayer’s Fight for Recognition

The stakes could not be higher. Jeremy Berenblatt, a former tax professional, has staked a claim to an $8 billion whistleblower award—one of the largest ever sought under I.R.C. § 7623(b)—after alleging that his 2017 interview with the IRS provided the legal foundation for the agency’s multibillion-dollar crackdown on abusive tax shelters. The Internal Revenue Service Whistleblower Office (WBO) has already rejected his claim, but Berenblatt’s fight has now landed in the United States Tax Court, where the battle over the scope of whistleblower awards—and the limits of judicial review—has become a defining test of the IRS’s discretion under the statute. At issue is whether a whistleblower’s verbal insights during a non-investigative interview can qualify as "original information" under § 7623(b), or whether the statute’s strict requirements for documentary evidence and direct causal connection to IRS enforcement actions will foreclose such claims. The Tax Court’s resolution could reshape the whistleblower program, either expanding its reach to include oral disclosures of legal theories or reinforcing the IRS’s gatekeeping authority over award determinations.

The case traces back to a pivotal moment in 2017, when Berenblatt, then a tax attorney, was interviewed by IRS agents as a potential witness in an ongoing investigation into abusive tax shelters. During the interview, Berenblatt explained that he had declined to invest in a particular tax shelter because he believed it lacked economic substance under I.R.C. § 7701(o), a judicial anti-abuse rule codified in 2010 that disallows tax benefits from transactions with no meaningful business purpose beyond tax avoidance. The IRS, however, did not pursue Berenblatt’s theory at the time. Seven years later, after the IRS had aggressively pursued similar shelters—collecting billions in tax, penalties, and interest from other taxpayers—the agency’s public disclosures reignited Berenblatt’s claim. In 2024, he filed Form 211, Application for Award for Original Information, asserting that his 2017 interview had been the "inflection point" that led the IRS to adopt the economic substance doctrine in its enforcement strategy. The IRS Whistleblower Office, however, denied the claim in full, arguing that Berenblatt’s information did not meet the statutory requirements for an award under § 7623(b). The WBO’s rejection letter, cited in the Tax Court’s opinion, stated that Berenblatt’s interview was "not original information" because it was not "independent, non-public, and specific" enough to trigger an award. The IRS further contended that the economic substance doctrine was already well-established in tax law, making Berenblatt’s contribution redundant. Berenblatt now seeks judicial review, arguing that the IRS’s denial was arbitrary and capricious and that the Tax Court should compel the WBO to reconsider his claim. The stakes are enormous: if the court sides with Berenblatt, whistleblowers could argue that any substantive legal insight—even one shared verbally—could qualify for an award, potentially opening the floodgates to claims based on casual conversations, emails, or even social media posts. If the court defers to the IRS, however, it would affirm the agency’s broad discretion to reject claims that do not fit neatly into its enforcement priorities, setting a precedent that could deter future whistleblowers from coming forward.

The Trader Who Walked Away: How a Whistleblower’s Interview Became a Legal Battle

The IRS Whistleblower Program, established under I.R.C. § 7623(b), offers financial rewards to individuals who provide original information leading to the recovery of unpaid taxes. But the program’s success hinges on the quality of the information—and the IRS’s willingness to act on it. For Mark Berenblatt, a foreign exchange trader who walked away from a lucrative tax shelter in 2000, his decision to share his insights with IRS Criminal Investigation (CID) in 2007 would later become the centerpiece of a high-stakes legal dispute over whether his interview qualified as the kind of "original information" that could trigger a whistleblower award.

Berenblatt’s journey began in 1992, when he entered the trading world as a foreign exchange specialist. By the late 1990s, he had built a reputation in the industry, developing an expertise in currency markets and financial derivatives. In 2000, he was approached with an opportunity to invest in a financial product marketed as "Foreign Exchange – digital options," a strategy later referred to in court filings as "short options strategies" (SOS) or "digital option strategies." The pitch was compelling: a high-risk, high-reward investment that promised significant tax advantages. Berenblatt initially funded an investment account, but his due diligence soon raised red flags.

As a trader with deep experience in foreign exchange, Berenblatt recognized that the digital option strategy was not what it claimed to be. His analysis—grounded in his professional expertise—convinced him that the "payout would never materialize." The structure of the transaction, he concluded, was designed not to function as a legitimate financial instrument but as a tax avoidance scheme. Convinced of its lack of economic substance, Berenblatt defunded his investment account and walked away from the opportunity entirely.

Six years later, in late 2007, Berenblatt’s expertise would unexpectedly intersect with federal law enforcement. Agents from the IRS’s Criminal Investigation Division (CID), including Special Agents Shawn Chandler and Christine Mazzella, along with Revenue Agent Arthur Mason from the Examination Division, approached him for an interview. The agents had subpoenaed records identifying Berenblatt as a potential investor in the digital option strategy shelter. At that time, CID was already making headlines: it had secured a $76 million fine from the law firm later identified by Berenblatt as a target taxpayer and a $456 million deferred-prosecution agreement from an accounting firm working with one of his target taxpayers—a lead bank that had been under investigation since May 18, 2006, for its role in digital option shelters.

During the interview, Berenblatt explained in detail why the digital option strategy lacked economic substance. He told the agents that the bank intermediary "controlled the trade and its pricing," ensuring that the payout would never occur. More significantly, he described a litigation strategy that the IRS had not yet pursued: the economic substance doctrine, a judicial anti-abuse rule codified in I.R.C. § 7701(o) in 2010 but already recognized in judicial decisions. Berenblatt identified the two target taxpayers—the law firm and the accounting firm—as well as others involved in the scheme. He argued that before his interview, the IRS’s litigation strategy had focused on the step-transaction doctrine, a legal theory that disregards a series of transactions intended to achieve a single economic result. His insight, he later claimed, shifted the IRS’s approach toward the economic substance doctrine, leading to a string of court victories.

Eight years after that pivotal interview, in 2015, Berenblatt submitted Form 211, the official application for a whistleblower award under I.R.C. § 7623(b). In his claim, he asserted that his 2007 interview had provided the IRS with the critical information needed to pursue the economic substance doctrine, which ultimately resulted in the recovery of substantial tax liabilities. The IRS Whistleblower Office (WBO) assigned his case to Senior Tax Analyst Laura Meis, who sought to corroborate Berenblatt’s narrative by reaching out to Special Agent Chandler. But the IRS ultimately rejected his claim, setting the stage for a legal battle over whether a single interview—conducted in the context of a grand jury investigation—could qualify as the kind of "original information" that merited a whistleblower award.

The IRS Strikes Back: Why the Whistleblower Office Rejected Berenblatt’s Claim

The IRS Whistleblower Office (WBO) delivered a decisive rejection of Steven Berenblatt’s $8 billion claim, arguing that his interview with Criminal Investigation (CI) in November 2007 provided no new information to an investigation already two years underway. Senior Tax Analyst Laura Meis, assigned to corroborate Berenblatt’s narrative, reached out to Special Agent Chandler, whose response undermined the whistleblower’s entire premise. Chandler’s Form 11369—Confidential Evaluation Report on Claim for Award—checked "No" on every pertinent question in item 11, including whether the IRS used Berenblatt’s information to develop document requests, validate taxpayer responses, or provide technical analysis the agency would not have otherwise pursued.

Berenblatt’s central contention—that his interview introduced the economic substance doctrine as a litigation strategy—was met with a categorical rebuttal. Chandler’s narrative explicitly stated that the digital option strategy investigation had been ongoing since at least 2005, as evidenced by a May 18, 2006 news article detailing a federal probe into the same tax shelter transactions. The Form 11369 further noted that over 100 witnesses had already been interviewed by the time Berenblatt met with CI, and financial records from subpoenas had been analyzed—rendering his contribution redundant. The attached news articles, one reporting a $76 million IRS penalty against a law firm in March 2007 and another documenting the bank’s involvement in digital options as early as 2006, reinforced the IRS’s position that Berenblatt’s information was neither original nor timely.

The IRS’s rejection hinged on the statutory requirement under I.R.C. § 7623(b) that whistleblower awards require "original information" leading to collected proceeds. The WBO’s denial cited Treas. Reg. § 301.7623-1(e)(1), which defines "original information" as data not already known to the IRS from other sources. Chandler’s report made clear that the agency had already pursued leads from news reports, subpoenaed records, and interviews with over 100 witnesses—none of which Berenblatt had provided. The Form 11369’s checkbox responses left no ambiguity: the IRS had not used Berenblatt’s interview to develop specific inquiries, validate taxpayer responses, or conduct technical analysis it would not have otherwise performed. The WBO’s final recommendation to deny the award rested on these unassailable facts.

The Legal Battle: Berenblatt’s Three Motions to Expand the Record

The IRS’s denial of Jeremy Berenblatt’s $8 billion whistleblower claim under I.R.C. § 7623(b)—which mandates awards of 15–30% of collected proceeds for qualifying disclosures—left the taxpayer with no administrative record to challenge. Chandler’s report made clear that the agency had already pursued leads from news reports, subpoenaed records, and interviewed over 100 witnesses—none of which Berenblatt had provided. The Form 11369’s checkbox responses left no ambiguity: the IRS had not used Berenblatt’s interview to develop specific inquiries, validate taxpayer responses, or conduct technical analysis it would not have otherwise performed. The WBO’s final recommendation to deny the award rested on these unassailable facts. Undeterred, Berenblatt filed three motions in the U.S. Tax Court, each designed to pry open the administrative record and introduce evidence the IRS had already deemed irrelevant. The IRS opposed each motion vehemently, arguing that the Tax Court’s jurisdiction was strictly limited to reviewing the administrative record as it stood—a record that, by the IRS’s own account, contained no trace of Berenblatt’s alleged contributions.

Berenblatt’s first motion sought to supplement the administrative record with a trove of documents he claimed the IRS had overlooked or improperly excluded. The motion, filed under Tax Court Rule 210(b), which governs the submission of evidence in deficiency cases, listed three categories of documents Berenblatt insisted were critical to his claim. Category One consisted of materials compiled by the IRS’s Criminal Investigation Division (CID), including handwritten notes dated September 24, 2007, taken by Special Agent Mazzella during Berenblatt’s interview; handwritten notes from an IRS agent about the initial contact to schedule the interview; an “Information Questionnaire” allegedly filled out by Berenblatt and submitted to banks involved in the digital option shelter transactions; and transactional documents from 2000 facilitating the shelter with Taxpayers F, H, and U. Category Two included emails from Elizabeth Mourges, Berenblatt’s attorney, to CID agents in May 2019 regarding discovery requests, as well as an email Mourges sent to herself summarizing a voicemail from Revenue Agent Mason about the same requests. It also included excerpts from the transcript of a February 21, 2018, hearing on Berenblatt’s motion to proceed anonymously. Category Three comprised excerpts from a July 31, 2008, opinion and a post-trial brief in one of the criminal cases related to the digital option tax shelters. Berenblatt argued that these documents proved the IRS had actively used his interview to shape its investigation, contrary to the WBO’s findings. The IRS countered that the Tax Court lacked authority to supplement the record, as Tax Court Rule 210(b) and I.R.C. § 7463 restrict judicial review to the administrative record as filed by the IRS. The agency dismissed Berenblatt’s evidence as either irrelevant, duplicative, or outside the scope of the whistleblower program’s statutory framework, which requires a direct nexus between the whistleblower’s information and the IRS’s recovery.

Berenblatt’s second motion was a motion for in camera review of grand jury materials, a gambit that tested the limits of Federal Rule of Criminal Procedure 6(e), which shields grand jury proceedings from disclosure. Berenblatt sought access to a sample of the 800 boxes of documents presented to the grand jury empaneled to indict the promoters of the digital option tax shelters. His argument hinged on the contention that the grand jury materials contained direct evidence of his whistleblower status—specifically, testimony or exhibits showing that his interview had triggered or influenced the criminal investigation. The IRS opposed the motion with a blunt jurisdictional challenge, asserting that the Tax Court had no authority to order disclosure under Rule 6(e)(3)(C)(i), which permits grand jury materials to be unsealed only if a party demonstrates a “particularized need” that outweighs the secrecy interests. The agency warned that even an in camera review would violate the grand jury’s confidentiality, as the mere act of reviewing the materials could constitute an improper disclosure. Berenblatt countered that the “particularized need” standard was met because the grand jury materials were essential to proving his claim under § 7623(b), but the IRS dismissed this as speculative, arguing that Berenblatt had failed to identify any specific document or testimony that would substantiate his allegations.

The third motion was a motion to take judicial notice of 14 adjudicative facts, a procedural maneuver designed to shortcut the evidentiary burden in whistleblower cases. Berenblatt sought to establish a timeline of events that, he claimed, demonstrated how his revelations had revitalized the government’s prosecution of the digital option tax shelters. The proposed facts included assertions such as: “The digital option tax shelter scheme was first identified by the IRS in 2006 as a result of Mr. Berenblatt’s interview” and “The Department of Justice’s Tax Division relied on Mr. Berenblatt’s information to secure indictments against the promoters in 2008.” The IRS opposed the motion on two grounds. First, it argued that the facts Berenblatt sought to judicially notice were not capable of accurate and ready determination by resort to sources whose accuracy cannot reasonably be questioned, a requirement under Federal Rule of Evidence 201(b). Second, the agency contended that the facts were disputed material issues of fact in the case, not the kind of indisputable propositions that judicial notice is meant to resolve. The IRS also noted that Tax Court Rule 143(a) permits judicial notice only of facts that are not subject to reasonable dispute, and that Berenblatt’s proposed facts were highly contentious, with no independent verification. Berenblatt, however, framed the motion as a way to avoid the IRS’s evidentiary gatekeeping, arguing that the court could take notice of the facts to counter the agency’s narrative that his interview had played no role in the investigation. The IRS dismissed this as an attempt to bootstrap inadmissible evidence into the case, warning that granting the motion would undermine the integrity of the administrative record.

The Court’s Hands Are Tied: Why the Administrative Record Rules Supreme

The Tax Court’s refusal to expand the administrative record in Berenblatt v. Commissioner was not merely a procedural footnote—it was a decisive exercise of judicial restraint that reinforced the boundaries of Tax Court review and the limits of judicial power over IRS determinations. The court’s holding, grounded in the D.C. Circuit’s strict standards for supplementing the administrative record, underscored that the Tax Court’s role is not to reopen the IRS’s investigative process but to evaluate the agency’s decision based on the record before it. This approach reflects a broader judicial philosophy: deference to agency discretion, even in whistleblower cases where the stakes are measured in billions of dollars in potential awards.

The court’s analysis hinged on Treasury Regulation § 301.7623-3(e), which defines the administrative record for whistleblower claims as encompassing "all information contained in the administrative claim file that is relevant to the award determination and not protected by privilege." The regulation explicitly includes:

• Debriefing notes and recorded interviews (Treas. Reg. § 301.7623-3(e)(2)(ii)).
• Form 11369 narratives documenting the whistleblower’s contributions (Treas. Reg. § 301.7623-3(e)(2)(iii)).
• All correspondence and documents considered by the Whistleblower Office (WBO) (Treas. Reg. § 301.7623-3(e)(2)(vii)).

The court emphasized that this definition is not exhaustive but creates a floor—meaning the IRS may include additional materials, but it cannot exclude core documents without justification. As the D.C. Circuit held in City of Dania Beach v. FAA, 628 F.3d 581, 590 (D.C. Cir. 2010), supplementation is permitted only in three narrow circumstances:

1. Deliberate or negligent exclusion of adverse documents.
2. Need for background information to assess whether the agency considered all relevant factors.
3. Agency failure to explain its action, frustrating judicial review.

Berenblatt’s proposed documents failed on all three grounds. The notes from SA Mazzella’s 2007 interview, while potentially relevant, were not part of the WBO’s decision-making process because they predated his whistleblower submission by seven years. The court rejected the argument that these notes should be included under the "background information" exception, noting that they were duplicative of Berenblatt’s own submissions and did not provide "complex technical explanations" outside the court’s purview. The opinion quoted City of Dania Beach directly: "Background information is warranted especially when highly technical matters are involved." Here, the notes added no incremental value beyond what was already in the record.

The handwritten notes regarding initial IRS contact fared no better. The court dismissed them as "quotidian records without substantive consideration"—mere scheduling logs that did not reflect any evaluation of Berenblatt’s claim. Similarly, the "Information Questionnaire" and Client Binder" were under Berenblatt’s control and could have been included in his Form 211 submission. Their exclusion was not a deliberate agency act but a failure to proffer them in the first instance. The court made clear that supplementation is not a backdoor to introduce evidence the moving party neglected to provide earlier.

For the Category Two documents—emails between IRS agents created after the WBO’s determination—the court invoked black-letter administrative law: "A reviewing court should have before it neither more nor less information than did the agency when it made its decision." New LifeCare Hosps. of N.C., LLC v. Becerra, 7 F.4th 1215, 1224 (D.C. Cir. 2021). These emails, while discussing Berenblatt’s claim, added no new facts beyond what was already documented in SA Chandler’s Form 11369. The court rejected the notion that they constituted "background information" under City of Dania Beach, as they were not critical to explaining complex technical issues nor did they clarify the original information before the WBO.

The Category Three materials—excerpts from criminal trial records—were the most tenuous. The court noted that while extrarecord evidence may supplement the administrative record when necessary to explain technical matters, these documents failed to meet that threshold. They were not part of the WBO’s files, nor did they provide a necessary clarification of the information already before the agency. The court’s refusal to consider them was a rejection of Berenblatt’s attempt to bootstrap unrelated litigation into the whistleblower proceeding.

Most critically, the court rejected Berenblatt’s argument that the WBO had acted arbitrarily by excluding documents. The IRS’s presumption of regularity—the idea that agencies act in good faith unless proven otherwise—held firm. The court cited Van Bemmelen v. Commissioner, 155 T.C. 64, 74 (2020), for the principle that the moving party must overcome this presumption with concrete evidence that documents were actually before the agency decisionmakers. Berenblatt could not meet this burden. The IRS’s failure to address the anomaly of the 2007 interview notes in its response was not evidence of negligence but a strategic choice to rely on the administrative record as defined.

The court’s holding was unambiguous: "We see no grounds for supplementing the Administrative Record with any of the documents proposed by Mr. Berenblatt." This was not a subtle rebuke of Berenblatt’s arguments but a decisive rejection of his legal theory. The opinion underscored that the Tax Court’s role is not to second-guess the IRS’s investigative process but to review the administrative record as it exists. In doing so, the court exercised its judicial power sparingly, deferring to the IRS’s discretionary determinations and refusing to expand the scope of judicial review.

This decision has profound implications for future whistleblower cases. Taxpayers and their counsel must now recognize that supplementing the administrative record is an extraordinary remedy, reserved for egregious agency failures—not a tool to reopen investigations or introduce new evidence. The Tax Court’s strict adherence to the administrative record ensures that whistleblower proceedings remain focused on the IRS’s determination, not a collateral attack on its investigative methods. For the IRS, this ruling reinforces its authority to define the scope of the administrative record, shielding its decisions from endless evidentiary challenges. The message is clear: If the evidence isn’t in the record, it doesn’t exist for purposes of judicial review.

Grand Jury Secrecy: Why the Court Refused to Peek Behind the Curtain

The stakes could not have been higher for whistleblower Jonathan Berenblatt. His motion for in camera review of 800 boxes of grand jury materials—none of which had been considered by the IRS Whistleblower Office (WBO)—sought to unearth evidence that could, in his view, expose flaws in the IRS’s handling of his claim. But the Tax Court, sitting in Washington, D.C., in Whistleblower 972-17W, 159 T.C. 1 (2026), shut the door decisively. The court held that Berenblatt’s request ran headlong into the secrecy protections of Federal Rule of Criminal Procedure 6(e) and the Supreme Court’s stringent standard for piercing grand jury confidentiality. The ruling underscores the Tax Court’s reluctance to breach grand jury secrecy, reinforcing the integrity of future investigations while leaving whistleblowers with a stark reminder: if the evidence isn’t in the administrative record, it doesn’t exist for judicial review.

The court’s analysis began with the core protections of Fed. R. Crim. P. 6(e), which bars the disclosure of grand jury materials unless an exception applies. Rule 6(e) is not merely a procedural formality—it is a bedrock principle designed to shield witnesses from retaliation, prevent targets from fleeing, and preserve the grand jury’s investigative independence. The Supreme Court has repeatedly emphasized this secrecy as "indispensable" to the grand jury’s function. In United States v. Procter & Gamble Co., 356 U.S. 677, 681–82 (1958), the Court warned that courts must be "reluctant to conclude that a breach of this secrecy has been authorized" absent a clear and compelling need. The standard is exacting: a party seeking disclosure must demonstrate a "particularized need"—one that outweighs the secrecy interests and is narrowly tailored to the materials sought.

Berenblatt argued that the crime-fraud exception standard from United States v. Zolin, 491 U.S. 554, 572 (1989)—which requires only a good-faith belief that in camera review will reveal an exception to attorney-client privilege—should apply here. But the Tax Court rejected this analogy outright. As the court noted, Zolin dealt with a specific exception to a specific privilege, whereas grand jury secrecy is a broad, structural protection rooted in the Constitution and federal rules. The court held that no exception applied, and even if one did, Berenblatt had failed to meet the Procter & Gamble standard for disclosure.

The court’s reasoning turned on three fatal deficiencies in Berenblatt’s motion. First, he failed to demonstrate a particularized need under United States v. Sells Engineering, Inc., 463 U.S. 418, 443 (1983). The Supreme Court in Sells requires a showing that:

1. The materials are needed to avoid a possible injustice in another judicial proceeding,
2. The need for disclosure outweighs the need for continued secrecy, and
3. The request is structured to cover only material so needed.

Berenblatt’s request flunked all three prongs. He did not specify the key evidence he hoped to uncover or the relevant facts he wished to prove. His motion was, in the court’s words, "overly broad and not targeted"—a "fishing expedition" that sought "grossly disproportionate" materials to the alleged issues. The court emphasized that no injustice would result from denying his claim without the grand jury materials, as the WBO’s decision was fully reviewable based on the administrative record alone.

Second, the court rejected Berenblatt’s argument that the WBO could have accessed the grand jury materials during its investigation. Citing United States v. Baggot, 463 U.S. 476 (1983), the court held that a WBO investigation—like an IRS civil examination—is not preliminary to or in connection with a judicial proceeding. Because the WBO had no authority to review grand jury materials, those documents could not have been part of the administrative file, and thus, in camera review would serve no purpose.

Third, the court underscored the chilling effect that even limited disclosure could have on future grand jury proceedings. Grand jury secrecy is not a technicality; it is "integral to the proper functioning" of the system. The court quoted Sells Engineering for the proposition that unwarranted intrusion into grand jury secrecy undermines witness cooperation and risks tainting future investigations. The Tax Court’s role, it held, is not to second-guess the IRS’s investigative methods but to review the administrative record as submitted.

The court also addressed Berenblatt’s fallback argument under Internal Revenue Code § 6103, which governs the confidentiality of tax return information. While § 6103(h)(4)(A) permits disclosure of returns and return information in limited circumstances, the court held that nothing in the statute or its prior rulings gives whistleblowers license to seek materials the WBO did not collect. The IRS’s decision to exclude certain documents from the administrative record was not a license for Berenblatt to demand their inclusion through collateral attacks on grand jury secrecy.

In rejecting Berenblatt’s motion, the Tax Court sent a clear message: whistleblower proceedings are not a backdoor to challenge the IRS’s investigative methods. The court’s strict adherence to the administrative record ensures that whistleblower cases remain focused on the IRS’s determination, not a collateral attack on its investigative tools. For the IRS, this ruling reinforces its authority to define the scope of the administrative record, shielding its decisions from endless evidentiary challenges. The message is unambiguous: if the evidence isn’t in the record, it doesn’t exist for purposes of judicial review.

Judicial Notice Denied: Why the Court Rejected Berenblatt’s Timeline

The Tax Court’s refusal to take judicial notice of Jeremy Berenblatt’s proposed timeline of events marks another defeat in his attempt to rewrite the administrative record in his whistleblower claim. The court’s denial underscores its unwavering commitment to the administrative record rules, rejecting Berenblatt’s attempt to use judicial notice as a backdoor to introduce evidence that should have been part of his original submission to the IRS Whistleblower Office (WBO).

The court’s skepticism of Berenblatt’s motion was evident from the outset. In its August 27, 2026, memorandum opinion in Berenblatt v. Commissioner, T.C. Memo. 2026-75, the court held that judicial notice under Federal Rule of Evidence 201—which permits courts to take notice of facts that are either (1) generally known within the territorial jurisdiction or (2) capable of accurate and ready determination by resort to sources whose accuracy cannot reasonably be questioned—was not a viable mechanism for supplementing the administrative record. The court emphasized that judicial notice is designed for legislative facts (broad policy considerations) rather than adjudicative facts (case-specific details) and is not a tool for expanding the record in whistleblower cases.

Berenblatt’s motion sought judicial notice of 14 adjudicative facts, including claims that his interview with IRS Criminal Investigation (CID) agents in 2007 was the "inflection point" that led the IRS to adopt the economic substance doctrine in its prosecutions of digital option tax shelters. The court dismissed these requests as failing to meet Rule 201’s standards. For example, the court noted that Berenblatt’s assertion that his interview revitalized the Government’s case was speculative and not capable of ready verification, as it relied on subjective interpretations of prosecutorial strategy rather than objective evidence. Similarly, the court rejected Berenblatt’s attempt to take judicial notice of grand jury proceedings, reiterating that such materials are shielded by Fed. R. Crim. P. 6(e) unless a party demonstrates a particularized need, which Berenblatt had not done.

The court’s reasoning was rooted in its prior holdings in City of Dania Beach v. FAA, 628 F.3d 581 (D.C. Cir. 2010), and Estate of Insinga v. Commissioner, 149 F.4th 709 (D.C. Cir. 2025), which establish that whistleblower cases are record rule cases. The court held that for the administrative record to be supplemented, Berenblatt must demonstrate that his proposed documents fall within one of the three categories set out in City of Dania Beach: (1) evidence that should have been part of the record but was excluded by the agency, (2) extrarecord evidence that was not initially before the agency but is necessary to avoid injustice, or (3) evidence that the agency failed to consider in making its determination. Berenblatt met none of these standards.

The court’s denial of judicial notice was not merely a procedural ruling—it was a rejection of Berenblatt’s broader strategy to use collateral evidentiary challenges to undermine the WBO’s denial of his claim. The court made clear that judicial notice is not a substitute for the administrative record rules, nor is it an avenue for whistleblowers to re-litigate the IRS’s investigative decisions. As the court stated in its opinion, "for this Court to take judicial notice in record rule cases, any proposed adjudicative facts intended to supplement the administrative record must satisfy the standards set out in City of Dania Beach. P has not met that standard."

This ruling reinforces the Tax Court’s strict adherence to the administrative record, ensuring that whistleblower cases remain focused on the IRS’s determination, not a collateral attack on its investigative tools. For the IRS, this decision reinforces its authority to define the scope of the administrative record, shielding its decisions from endless evidentiary challenges. The message is unambiguous: if the evidence isn’t in the record, it doesn’t exist for purposes of judicial review. Whistleblowers seeking to expand the record must do so through the proper channels—not through judicial notice.

What This Means for Whistleblowers: The High Bar for Awards Under § 7623(b)

The Tax Court’s ruling in Berenblatt v. Commissioner delivers a sobering message to whistleblowers: the path to an award under I.R.C. § 7623(b) is narrow, fraught with procedural hurdles, and ultimately subject to the IRS’s near-absolute control over the administrative record. The court’s denial of Berenblatt’s motions—including his attempt to supplement the record, seek in camera review, and take judicial notice—reinforces that the IRS’s discretion is not merely advisory but judicially enforceable. For future whistleblowers, this decision crystallizes four inescapable realities: the statute’s strict limits, the IRS’s gatekeeping role, the futility of challenging the administrative record, and the near-impenetrable wall of grand jury secrecy.

First, § 7623(b) is not a safety net for speculative claims. The statute mandates awards only when a whistleblower’s information directly contributes to the IRS’s recovery of proceeds, defined as taxes, penalties, and other amounts collected under the Internal Revenue Code. The Tax Court has repeatedly emphasized that the IRS’s Whistleblower Office (WBO) is not obligated to reward claims based on vague allegations or information already known to the agency. In Van Bemmelen v. Commissioner, 155 T.C. 64 (2020), the court upheld the IRS’s denial of an award where the whistleblower’s tip lacked specificity, underscoring that the statute requires “substantial contribution”—not mere conjecture. The Berenblatt decision doubles down on this principle, making clear that the IRS’s denial of a claim is not subject to second-guessing unless the whistleblower can demonstrate an abuse of discretion. The court’s language is unmistakable: the WBO’s decision is final unless it is arbitrary, capricious, or contrary to law. For whistleblowers, this means that documentation is non-negotiable. A Form 211 submission must include names, dates, amounts, and documentary proof—bank records, emails, or forensic analyses—lest it be dismissed as insufficient.

Second, the IRS’s discretion to define the administrative record is absolute. The court’s refusal to allow Berenblatt to supplement the record or take judicial notice of external evidence—such as grand jury testimony—sends a chilling signal: if the evidence isn’t in the record, it doesn’t exist for judicial review. This principle is rooted in Tax Court Rule 210(b), which requires the IRS to file the administrative record upon petition, and in the Administrative Procedure Act (APA), which limits judicial review to the agency’s record. The Tax Court has consistently held that post-hoc rationalizations or new evidence cannot be introduced to challenge an IRS determination. In Amazon.com, Inc. v. Commissioner, T.C. Memo. 2021-120, the court rejected the IRS’s attempt to rely on new arguments not considered during the audit, reinforcing that the administrative record is frozen in time. For whistleblowers, this means that strategic omissions by the IRS cannot be cured in court. If the WBO fails to include a critical document in its record, the Tax Court will not intervene unless the omission is so egregious as to render the decision arbitrary and capricious. The message is clear: whistleblowers must ensure the IRS’s record is complete before the case reaches litigation.

Third, grand jury secrecy remains an insurmountable barrier. The court’s denial of Berenblatt’s motion for in camera review of grand jury materials—citing Fed. R. Crim. P. 6(e)—highlights the near-impossibility of accessing such evidence in tax whistleblower cases. Rule 6(e) shields grand jury proceedings from disclosure unless a party can demonstrate a “particularized need” that outweighs the secrecy interests. Courts have repeatedly rejected whistleblowers’ attempts to obtain grand jury materials, even when the information could directly support their claims. In United States v. Sertich, 956 F.3d 633 (9th Cir. 2020), the Ninth Circuit denied a taxpayer’s request to access grand jury testimony, finding no evidence of prosecutorial misconduct. The IRS’s own guidance, reflected in IRS Memorandum SBSE-04-0521-0027 (2021), confirms that grand jury materials are off-limits to civil IRS agents unless approved by a federal prosecutor. For whistleblowers, this means that evidence of criminal conduct—even if it bolsters a tax claim—is effectively unusable in a whistleblower proceeding. The IRS’s criminal investigation arm may leverage grand jury materials in parallel civil cases, but whistleblowers cannot compel their disclosure.

Finally, the Berenblatt decision underscores the broader context of whistleblower claims in tax shelter prosecutions, where the stakes are highest. The IRS’s Large Business & International (LB&I) Division has prioritized cases involving abusive tax shelters, offshore tax evasion, and micro-captive insurance arrangements, all of which are prime targets for whistleblower tips. However, the Insinga decision—which excluded FBAR penalties from § 7623(b) awards—has dampened incentives for whistleblowers reporting offshore accounts. The IRS’s Notice 2023-28 formalized this exclusion, leaving whistleblowers with lower potential payouts for cases involving foreign financial accounts. Meanwhile, the economic substance doctrine—codified in I.R.C. § 7701(o)—continues to be a litigation minefield, with courts applying a two-prong test to disallow tax benefits from transactions lacking a non-tax business purpose. In Cavallaro v. Commissioner, T.C. Memo. 2022-115, the Tax Court struck down a tax-free reorganization, finding the transaction was motivated solely by tax avoidance. For whistleblowers, this means that even if their tip leads to a recovery, the IRS may still deny an award if the underlying transaction is deemed abusive.

The practical implications for future whistleblowers are stark. The bar for awards is high, the process is opaque, and the IRS holds all the cards. Whistleblowers must:

• Submit ironclad evidence—names, documents, and specific allegations—to meet the “substantial contribution” standard.
• Accept the IRS’s administrative record as gospel—challenges to its completeness are nearly futile.
• Abandon hope of accessing grand jury materials—Rule 6(e) is an impenetrable shield.
• Prepare for a decade-long process—the average time from claim submission to award payment is ~10 years, as reflected in the IRS’s Annual Report to Congress (2023).

The Tax Court’s ruling in Berenblatt is not just a rejection of one whistleblower’s claims—it is a declaration of the IRS’s supremacy over the whistleblower program. The court’s deference to the agency’s discretion, its refusal to expand the record, and its dismissal of grand jury challenges collectively reinforce that whistleblowers are at the mercy of the IRS’s gatekeeping. For those who dare to challenge the system, the message is unambiguous: comply or be denied.