A company discovers its name on the SDN List (OFAC's list of Specially Designated Nationals and blocked persons). Overnight, US-dollar transactions freeze, correspondent banks withdraw, and counterparties terminate contracts. The designation may rest on mistaken identity, outdated information, or a factual record the company has never been shown. As of March 2026, OFAC administers more than three dozen sanctions programmes, and the number of designated parties across those programmes runs into thousands. The procedural route to challenge that designation is narrow, time-sensitive, and heavily weighted toward the regulator. Missing a step, or making the wrong argument first, can foreclose options that would otherwise be available.
Challenging the designation criteria under OFAC rules begins with an administrative reconsideration petition submitted directly to OFAC. The process is governed by IEEPA and the applicable programme regulations, administered by OFAC's Compliance and Enforcement Division, and can be combined with parallel judicial-review proceedings in the US federal courts. No statutory deadline binds the agency to respond, and success depends almost entirely on the quality of the evidentiary record the petitioner builds before filing.
This briefing sets out the legal basis for designation, the reconsideration procedure, the evidentiary standard, cross-border considerations for non-US designees, the interaction with EU and UK delisting routes, common errors, and when to involve counsel.
What legal authority gives OFAC the power to designate?
OFAC derives its designation authority primarily from IEEPA – the International Emergency Economic Powers Act – which allows the President to declare a national emergency with respect to an unusual and extraordinary threat and to block the property of persons determined to fall within the scope of that emergency. Each sanctions programme is established by an Executive Order that identifies the categories of persons subject to designation. OFAC then applies those categories to individuals and entities through its internal designation process.
The standard applied varies by programme. In some programmes, designation requires a finding that the person has engaged in a specified activity. In others, it is sufficient to find that the person is owned or controlled by, or has acted for or on behalf of, a designated person. This second route – sometimes called the nexus designation – is particularly significant for corporate groups. A subsidiary or affiliate can be designated without itself having done anything that would independently qualify, provided the nexus to a designated parent or principal is established.
OFAC does not publish its internal evidentiary record before designation. The agency notifies the designated party after the fact, typically through the Federal Register notice and a letter. The notice provides the legal basis but rarely the full underlying factual record. That asymmetry is the starting point for every challenge.
How does the administrative reconsideration process work?
The administrative reconsideration procedure is the primary formal route for challenging the designation criteria under OFAC rules. A designated party, or its authorised representative, submits a petition to OFAC setting out the grounds on which the designation is said to be incorrect or unsupported. OFAC reviews the petition, may request additional information, and issues a determination. There is no hearing. The process is entirely written.
The petition must address the specific designation basis stated in the Federal Register notice. If the notice identifies ownership and control by a designated person as the basis, the petition must directly contest that finding – for example by demonstrating that the ownership threshold is not met, or that the control characterisation is wrong. A petition that argues good character or economic hardship without addressing the stated criteria is unlikely to succeed.
There is no statutory time limit within which OFAC must respond. In our experience, reconsideration proceedings can take a substantial period – in some cases running to years – particularly where the underlying evidentiary record is complex or where OFAC is reviewing classified or sensitive information. Petitioners should plan for a long process and maintain compliance posture throughout.
OFAC may request a response to a notice of apparent violation during the same period, and those two streams can run in parallel. Keeping them separate in correspondence matters: a submission made in response to an enforcement inquiry is not a reconsideration petition, and vice versa. We regularly advise clients on how to manage both streams without inadvertently prejudicing the reconsideration.
What evidentiary standard must a petitioner meet?
OFAC applies a reasonable cause standard internally when making a designation. The agency does not need to prove the designation criteria beyond reasonable doubt or on the balance of probabilities in the civil sense. In a reconsideration, the petitioner's task is to place before OFAC sufficient information to undermine reasonable cause – to show that the factual basis for designation is wrong, incomplete, or that circumstances have materially changed.
The quality of the evidence matters more than its volume. Corporate ownership charts supported by notarised registry extracts carry more weight than narrative assertions. Bank records demonstrating the absence of a financial relationship can rebut a nexus finding. Sworn declarations from independent directors or auditors can address control characterisations.
What the petitioner generally cannot do is see the full classified record that OFAC relied upon. OFAC operates in a national-security environment and is not required to disclose intelligence sources or methods. This means the petitioner must anticipate the likely factual basis from the notice and the available public record, and build evidence that speaks to those likely findings, without certainty about what they are. That requires experienced judgement about how OFAC constructs nexus cases.
A further consideration: a poorly constructed petition can inadvertently confirm facts that OFAC had only suspected. Every piece of evidence submitted becomes part of the administrative record, which may be relevant in subsequent judicial review. In our practice, we treat the evidentiary package as a document that must perform two functions at once – persuading OFAC, and preserving the record for court.
When does judicial review become the appropriate route?
Judicial review in the US federal courts is available to challenge OFAC designations, typically on the grounds that the agency acted arbitrarily and capriciously, exceeded its statutory authority, or violated the petitioner's due-process rights. The standard of review is deferential: courts generally uphold agency action that is supported by the administrative record and within the agency's statutory remit. But the courts have shown a willingness to scrutinise designations where the public portion of the record is thin.
The interaction between the administrative reconsideration and judicial review is important. Filing a petition with OFAC does not toll any applicable limitations period for a court claim, and in some circumstances the choice of which route to pursue first affects the arguments available in the other. A party that has received a reconsideration denial has an administrative record to place before a court. A party that goes directly to court before exhausting administrative remedies may face procedural challenges.
Judicial review proceedings in this area tend to be document-intensive, slow, and uncertain in outcome. The availability of classified evidence procedures in the relevant courts means that a petitioner may be arguing against a record partly withheld from them, presenting arguments through counsel with appropriate clearances. This is specialist litigation. It requires not only knowledge of administrative law but a close familiarity with how OFAC constructs and defends its designations.
How do OFSI and EU delisting routes compare with the OFAC process?
A non-US person designated under OFAC is almost always also listed under one or more of the parallel regimes – the UK's OFSI-administered financial sanctions, or the EU Council Regulation relevant to the relevant programme. The procedural routes and legal standards in those regimes differ materially from the OFAC process, and those differences affect how a multi-jurisdiction delisting strategy should be structured.
Under OFSI, a designated person can make representations to the UK Treasury seeking a ministerial review of the designation. The test is whether reasonable grounds exist for the listing. The process is governed by the Sanctions and Anti-Money Laundering Act ("SAMLA") and the relevant thematic regulations. Unlike OFAC, OFSI operates under a domestic legal system that permits judicial review by the UK High Court on conventional public-law grounds, with full procedural protections.
Under the EU regime, a listed person can bring an annulment action before the EU General Court (the EU court with first-instance jurisdiction over Council acts). The EU courts have developed a body of case law on the sufficiency of reasons and the standard of evidence required to maintain a designation. Challenges at the EU General Court have resulted in annulments where the Council could not demonstrate a sufficient factual basis. That route is therefore not merely theoretical.
The critical cross-border point is that OFAC, OFSI, and the EU Council each maintain their own lists and their own processes. A successful delisting by one authority does not automatically remove a listing by another. In our cross-border practice, we approach multi-jurisdiction designations by identifying which regime offers the most tractable legal standard and building the evidentiary package so it serves all three simultaneously. The OFSI and EU processes can sometimes be used to generate a public factual record – through disclosed reasons and court judgments – that informs and strengthens the OFAC petition.
For businesses operating between jurisdictions, the practical effect of a parallel listing is felt immediately: even if OFAC reconsideration is pending, the EU or UK listing independently blocks transactions in those jurisdictions. Waiting for one process to conclude before starting another is rarely the right approach.
For a detailed overview of the evidence package required in related jurisdictions, see our guide on delisting evidence package requirements. For the procedural mechanics of EU General Court annulment actions, see our analysis of EU General Court annulment proceedings and the related briefing at EU General Court – designation challenges explained.
What are the most common errors in OFAC designation challenges?
Experience across designation challenge matters shows a consistent set of errors that reduce the prospects of a successful outcome. Identifying them early is itself a risk-management exercise.
The first and most common error is delay. There is no formal deadline to file a reconsideration petition, but each day of inaction is a day during which the adverse effects compound: bank relationships terminate, trade credit evaporates, and the operational base from which evidence can be gathered narrows. Acting quickly after designation, even if the initial petition is preliminary, preserves options.
The second error is addressing the wrong issue. If the designation notice states that the basis is acting on behalf of a designated person, a petition focused solely on the petitioner's good commercial character does not address the stated basis. OFAC will not exercise discretion in the petitioner's favour where the designated basis remains unrebutted.
A third error is submitting evidence that is internally inconsistent. If corporate documents disclose a structure different from the one described in the narrative, OFAC will notice. Consistency between the narrative and the documentary record is essential. We have seen petitions fail because a company's internal ownership chart did not match the notarised registry extract filed with the same petition.
A fourth error is treating the petition as a one-time filing rather than the opening of a dialogue. OFAC may issue supplemental questions or requests for clarification. Responding promptly and accurately to those requests is as important as the initial submission. A petition that goes dark after the initial filing signals a lack of engagement.
Finally, overlooking the interaction with the 50 percent rule (OFAC's rule treating entities owned 50 percent or more in the aggregate by blocked persons as themselves blocked) can produce a situation where a petitioner successfully removes its own name from the SDN List but remains constructively blocked because a shareholder was not addressed. The delisting strategy must address the full ownership picture, not just the listed entity.
What is the myth that frustrates most OFAC petitioners?
The most persistent myth in this area is that a factually weak designation cannot be challenged because OFAC always wins. That view misunderstands the process. OFAC's administrative record is not beyond scrutiny. The US courts have vacated designations where the public record was insufficient. OFSI has delisted parties following representations. The EU General Court has annulled listings where the Council's reasons did not meet the legal standard. The premise that challenge is futile leads to a failure to act, which in turn guarantees the outcome the petitioner feared.
The converse myth is equally dangerous: that filing a petition will quickly resolve the problem. The process is not fast. It is not transparent in the way commercial litigation is transparent. And OFAC is not obliged to explain its reasoning in full. Managing client expectations on timeline and process is as important as managing the legal argument.
What the process does offer is a structured route to engage directly with the agency, to correct factual errors, to demonstrate changed circumstances, and – if necessary – to build a record for court. In our experience, the clients most likely to achieve a positive outcome are those who start the process with a clear-eyed understanding of both routes, who invest in the evidentiary package from the outset, and who treat the challenge as a sustained engagement rather than a single filing.
Related practices
- Delisting evidence package – Australia service – building the evidentiary record for Australian sanctions delisting petitions
- EU General Court annulment actions – procedural mechanics and legal standards for EU designation challenges