A US correspondent bank receives an incoming wire transfer. The originator matches a name on the OFAC SDN List (OFAC's list of Specially Designated Nationals and blocked persons). The bank freezes the funds within the hour. What happens next? Who holds the account, on what terms, and what must the institution report? These operational questions define the practical reality of frozen-account management under OFAC – and the answers carry legal consequences that extend well beyond the initial block.
Frozen-account management under OFAC refers to the set of obligations that apply once a financial institution, business, or other US person has blocked property belonging to a sanctioned party. The governing authority is OFAC, acting under the powers of IEEPA and related statutes. As of June 2026, blocked property must be held in a segregated, interest-bearing account, reported to OFAC within a short statutory window, and maintained with strict restrictions on any further dealings – until a specific licence or a statutory authorisation permits release.
This briefing covers how the blocking obligation arises, what the ongoing management requirements look like, how they compare to the positions taken by OFSI in the United Kingdom and the EU, and what businesses and financial institutions must do to stay inside the rules.
Who administers frozen-account management under OFAC, and what is the legal basis?
OFAC – the Office of Foreign Assets Control, a bureau of the US Treasury – administers all blocking obligations arising from US economic sanctions. Its authority rests principally on IEEPA, a statute that grants the President sweeping powers to block transactions and property where a national emergency has been declared, and on TWEA for a small number of older programmes. OFAC translates those executive powers into programme-specific regulations that bind US persons and, through extraterritorial provisions, a broader range of non-US actors.
The legal architecture matters for practitioners. IEEPA does not itself describe how blocked property must be held. That detail lives in the programme regulations and in OFAC's published guidance. Each sanctions programme may have slightly different mechanics, so the first question on any blocking event is: which programme applies? The answer determines the relevant regulations, the reporting window, and the licensing routes available for release.
In our cross-border practice, we regularly advise correspondent banks and payment firms that discover a block mid-transaction. The most common error at this stage is treating all OFAC programmes as identical. They share a common structure but diverge on specifics – and the specific programme is what governs the deadline clock.
What does the blocking obligation actually require?
When a US person encounters property in which a sanctioned party has an interest, the obligation to block arises immediately – not at the end of the business day, not after internal escalation, but at the moment of identification. The core prohibition is against releasing, transferring, exporting, withdrawing, or otherwise dealing in blocked property without OFAC authorisation.
The practical requirements that follow the initial block include three distinct obligations. First, the property must be placed in a blocked account – a segregated account that generates a record of the frozen assets. OFAC requires that blocked funds earn commercially reasonable interest, meaning a simple suspense account that accrues nothing is insufficient. Second, the blocking party must file a report with OFAC. The reporting window is short: OFAC's regulations generally require a report within 10 business days of the blocking event. Third, the blocking party must maintain records for five years from the date of the transaction or the termination of the blocking period, whichever is later. These three obligations – segregation, reporting, record-keeping – are the operational spine of frozen-account management.
What falls outside them? The institution may not use the blocked funds for its own benefit. It may not set off debts against them. It may not release them to the account holder, to a court order, or to any third party without an OFAC authorisation. A domestic court judgment does not override OFAC's block; this surprises litigants more often than practitioners would expect.
How does the ownership and control test determine whether property is blocked in the first place?
Property is blocked when a sanctioned person has an interest in it – but determining that interest requires applying the 50 percent rule (OFAC's rule treating entities owned 50 percent or more by blocked persons as themselves blocked, whether the holding is direct or held through intermediate layers). If a listed person owns 50 percent or more of a company in aggregate, that company's property is blocked as if the company were itself listed, even though it does not appear on the SDN List.
Aggregation across multiple listed persons is critical. Two SDN-listed individuals each holding a 26 percent stake in a target company produce a combined interest of 52 percent. The company is blocked. Screening tools that check only direct shareholding miss this. In our experience, it is layered ownership structures – where the listed person sits two or three holding-company levels above the operating entity – that produce the most problematic false-negatives.
Does the same logic apply to the blocked account itself? Yes. If a blocked person has a legal or equitable interest in a bank account, that account is subject to blocking regardless of who else shares the account. Joint accounts, trust accounts, and nominee arrangements all require analysis to determine whether a blocked person has an interest. Have you mapped every beneficial owner of every account in scope?
How do the OFSI and EU obligations compare to OFAC's frozen-account rules?
For businesses operating across the Atlantic, the OFAC regime does not exist in isolation. OFSI – the Office of Financial Sanctions Implementation in the UK Treasury – and the EU Council both impose parallel blocking obligations, but they diverge from OFAC in ways that matter operationally.
OFAC's ownership test is purely mechanical: 50 percent or more ownership by a blocked person triggers the block, regardless of whether the listed person exercises any day-to-day control. OFSI and the EU apply both an ownership test (at the same 50 percent threshold) and a separate control test – meaning that a listed person with less than 50 percent ownership can still cause a block if they exercise effective control over the entity or account. This divergence can produce situations where an account is blocked under OFSI or the EU position but not clearly blocked under OFAC, or vice versa, because the same facts produce different legal conclusions under each regime's ownership-and-control analysis.
A second point of divergence is reporting. OFSI requires reporting of a knowledge or reasonable suspicion that a person is a designated person, with its own statutory window and its own form. The EU imposes member-state-level obligations that vary in practice. OFAC's 10 business days reporting deadline applies to the US leg of the same transaction. A bank managing a multi-currency account with US-dollar clearing and euro clearing must satisfy all three regimes simultaneously, and the clocks do not run in lockstep.
We regularly advise institutions on how to design a single workflow that satisfies OFAC, OFSI, and the relevant EU member-state obligation from a single blocking event. The workflow is possible; the key is understanding the points of divergence before the event, not after it. For a detailed analysis of the UK position, see our regime briefing on frozen-account management under OFSI.
What are the licensing routes for releasing blocked funds?
Blocked property does not have to remain frozen indefinitely. OFAC provides two principal routes to release: a general licence (a standing authorisation that permits a defined category of transactions without a separate application) and a specific licence (a case-by-case authorisation to conduct an otherwise prohibited transaction, issued to a named applicant following an application to OFAC).
General licences are the faster route where they apply. Each sanctions programme publishes its own set of general licences covering categories such as personal maintenance transactions, legal services, certain humanitarian activities, and wind-down periods after a new designation. The first analytical step on any request to release blocked funds is to examine the applicable programme's general licences. If a general licence applies, no application to OFAC is required – but the conditions of the licence must be met precisely, and a record must be kept.
Where no general licence applies, a specific-licence application is required. The applicant – which may be the blocking institution, the account holder, or a third party with a legal interest – must submit a licence request to OFAC's licensing division. The application requires a detailed factual statement, supporting documentation, and an identification of the transactions sought. OFAC does not publish a fixed decision timeline for specific licences, and in practice processing times vary considerably by programme and by the complexity of the request. Applicants should not assume a short turnaround.
What about delisting? If the SDN-listed person whose interest caused the block is removed from the SDN List, the block on property held solely because of that listing is typically released. However, the institution holding the account should confirm that no other programme or listing continues to apply before releasing funds. For an overview of licensing in a related export-control context, see our analysis of general-licence eligibility under the BIS/EAR regime.
What risk flags should a business monitor once a block is in place?
Holding a blocked account is not a passive activity. Several recurring risk patterns appear in practice, and each carries its own enforcement exposure.
The first risk is under-reporting or late reporting. A 10 business day window sounds generous until the blocking event is discovered on a Friday afternoon of a public-holiday weekend. Internal escalation chains that add days to the clock create exposure. Build a process that treats the clock as running from the moment of identification, not from the moment the compliance team is notified.
The second risk is interest attribution. Blocked funds must earn commercially reasonable interest. Institutions that hold funds in a non-interest-bearing suspense account for months or years may find, on an OFAC examination, that they owe the interest that should have accrued. This is a secondary liability that is easy to generate inadvertently and hard to dispute once the period has passed.
The third risk is inadvertent dealing. Once funds are blocked, any debit, credit, set-off, or internal transfer that touches the blocked account requires analysis. Fee deductions, standing charges, and intra-bank netting can all constitute prohibited dealings. Automated systems that continue to operate against blocked accounts represent a significant compliance gap.
The fourth risk is the voluntary self-disclosure (VSD) decision. If a technical violation has occurred – a late report, an inadvertent dealing, a missed interest calculation – the question arises whether to disclose to OFAC proactively. A timely, complete VSD is one of the factors OFAC considers in mitigation. However, the decision to disclose is itself consequential: it opens a formal enforcement file and triggers OFAC's review process. The VSD calculus depends on the nature of the violation, the programme in question, and the institution's prior history with OFAC. Counsel should be involved before any VSD submission is made.
In a recent matter, a payment firm discovered that a series of automated interest credits had been applied to a blocked account over an 18-month period. We scoped the apparent violations, advised on the VSD decision, and prepared the disclosure package. The outcome depended on facts specific to that matter, and no outcome can be guaranteed in similar situations – but acting early and systematically preserved options that would have narrowed significantly with delay.
When should a business involve sanctions counsel?
Some firms treat the decision to call counsel as the last step. In frozen-account management it should be among the first. The reason is structural: the obligations that arise from a blocking event – segregation, reporting, licensing, record-keeping – interact with each other in a sequence that begins on day one. A decision made incorrectly in the first 48 hours (such as releasing funds under a general-licence reading that does not apply, or filing an incomplete blocking report) can create an enforcement exposure that dwarfs the complexity of the original block.
Counsel should be involved at four points: immediately on identification of blocked property, before any communication with the account holder about the block, before submission of any licence application or VSD, and before any release of blocked funds even under a general licence. The general-licence step surprises practitioners: even where a general licence appears to apply on its face, the conditions attached to it can be narrow, and acting outside those conditions is a violation.
The position above covers the standard case. Your facts – the counterparty structure, the originating jurisdiction, the currency leg in question, and the specific programme in play – change the analysis materially. For a confidential assessment of a blocking event or a frozen-account management question, contact Calder & Vance at info@caldervance.com.
A second dimension frequently overlooked is the de-risking (a financial institution exiting a relationship to avoid sanctions exposure) question that runs alongside a block. When a block is identified, the institution's broader relationship with the customer comes into focus. Is there a pattern? Are there adjacent accounts that require review? The frozen-account event is often the visible part of a larger exposure that a systematic review will surface. We regularly assist institutions in scoping that broader review before OFAC does it for them.
If a transaction has already been flagged, or a report has been filed late, an early review preserves options that narrow with time. Contact Calder & Vance at info@caldervance.com for a rapid assessment.
Related practices
- Frozen-account management under BIS/EAR – licensing and release under the US export-control regime
- Frozen-account management under OFSI – UK financial-sanctions obligations and licensing routes compared
- General-licence eligibility under BIS/EAR – how standing authorisations work in the export-control context
Frequently asked questions on frozen-account management under OFAC
Who administers frozen-account management under OFAC?
OFAC – the Office of Foreign Assets Control within the US Treasury – administers all blocking and reporting obligations for frozen accounts under US sanctions. OFAC issues the programme-specific regulations that define what must be blocked, sets the reporting requirements, processes specific-licence applications for the release of blocked funds, and conducts enforcement reviews where obligations have not been met. No other US federal agency holds primary jurisdiction over the blocking obligation itself, though criminal export-control and money-laundering violations may involve DOJ.
What does OFAC prohibit in relation to frozen-account management?
OFAC prohibits any dealing in blocked property without authorisation. That prohibition covers releasing, transferring, exporting, withdrawing, paying, or otherwise transacting in funds held in a blocked account. It also covers allowing the account holder to benefit from the funds through indirect means. Fee deductions, set-offs, and internal transfers can all constitute prohibited dealings if applied against a blocked account without an applicable general licence or a specific licence from OFAC.
How is frozen-account management enforced under OFAC?
OFAC enforces blocking obligations through a combination of civil and criminal routes. Civil penalties may be assessed for violations including late reporting, failure to segregate blocked property, inadvertent dealings, and failure to maintain records. The severity of the penalty depends on factors including whether the violation was wilful or reckless, the institution's compliance history, and whether a VSD was filed. A timely VSD is a recognised mitigating factor. Criminal referrals to DOJ apply in cases involving wilful evasion.
About the author
J. M. Aldridge advises multinationals and financial institutions on US sanctions and export controls, with a focus on OFAC licensing, secondary-sanctions risk, and BIS classification. Calder & Vance – International Sanctions & Export Control Counsel.
About Calder & Vance
Calder & Vance is an independent international sanctions and export-control boutique. We advise multinationals, financial institutions, exporters, and individuals on the major regimes – OFAC and BIS in the United States, OFSI and ECJU in the United Kingdom, the EU Council regulations and the EU General Court, the United Nations Consolidated List, and the regimes of Switzerland, Canada, Australia, the UAE, Singapore, and Japan. Our work is limited to lawful compliance, licensing, delisting, enforcement defence, and due diligence. To discuss a matter, contact info@caldervance.com.
Disclaimer: This material is general information, not legal advice, and is not a substitute for advice on your specific facts. Sanctions and export-control rules change frequently and differ by regime; verify the current position before relying on anything stated here. Calder & Vance does not advise on circumventing or evading sanctions. For advice on your situation, contact info@caldervance.com.