Asset Freeze

What an asset freeze actually is

An asset freeze prohibits all dealings with specific property connected to a sanctioned party, without transferring legal ownership away from that party. OFAC’s own terminology for this is “blocking” rather than “freezing,” though the concepts are identical and the terms are used interchangeably in practice. Title to the property technically remains with the blocked person throughout; what changes is that every ordinary right that comes with ownership, using it, transferring it, benefiting from it, is suspended for as long as the blocking remains in effect.

Blocked vs frozen: a terminology divide worth knowing

US regulatory language, driven by OFAC, consistently uses “blocked” and “blocking.” UK and EU regulatory language more commonly uses “frozen” and “freezing.” Both describe the same underlying legal mechanism: property becomes untouchable without specific authorisation, while ownership itself doesn’t transfer to the government or anyone else. A compliance professional moving between US and European regulatory contexts needs to recognise these as the same concept under different regional vocabulary, not two different mechanisms.

The legal mechanics: what actually happens to the property

Once property is determined to be blocked, US regulations require it to be placed immediately into a segregated, interest-bearing account, from which only OFAC-authorised debits can be made. OFAC requires that interest accrue at a commercially reasonable rate, the rate a bank would ordinarily offer other depositors on deposits or instruments of comparable size and maturity, not a nominal or reduced rate. Institutions can choose to hold blocked property in individually titled accounts per transaction, or in a single omnibus account covering multiple related blockings, provided a clear audit trail exists that would allow any specific portion to be identified and unblocked, with its accrued interest, at any future point.

Blocked vs rejected: a critical distinction most content blurs

Not every prohibited transaction results in blocked property, and the distinction genuinely matters. A transaction is blocked when there is an actual blockable property interest involved, the transaction itself belongs to, or would benefit, a blocked person. A transaction is instead rejected when it’s prohibited under a sanctions programme but doesn’t involve any blockable property interest at all, for example, a transaction that would violate country-based sanctions but doesn’t touch any specific blocked person’s property. Blocked property gets frozen in place, held in the interest-bearing account described above. Rejected transactions instead get returned to their originator; there’s no property to hold, only a transaction that legally cannot be completed. Both outcomes carry independent, separate reporting obligations to OFAC.

The initial blocking report: 10 business days, no exceptions

US persons who come into possession or control of blocked property must file an initial blocking report with OFAC within 10 business days of the date the property becomes blocked, under 31 C.F.R. § 501.603. That report has to include the holder’s contact information, a description of the specific transaction that triggered the blocking, and the property’s estimated value expressed in US dollars. Rejected transactions carry a parallel, equally strict deadline: a report to OFAC within 10 business days of the rejection, under 31 C.F.R. § 501.604, required of every US person, not financial institutions alone.

The Annual Report of Blocked Property

Beyond the initial report, any US person continuing to hold blocked property owes OFAC an Annual Report of Blocked Property, the ARBP, due every year by 30 September, covering all blocked property held as of the preceding 30 June. This is a comprehensive report, not a simple confirmation that blocking continues; it requires detailing the property currently held, consistent with the same level of specificity as the original blocking report. Missing this annual deadline is treated as an independent violation, separate from any issue with the original blocking itself.

What changed in 2024: who actually has to report

A meaningful, recent regulatory change is worth being precise about, since a lot of existing content still describes the older, narrower rule. An OFAC Interim Final Rule, effective 8 August 2024, followed by a Final Rule effective 7 November 2024, expanded the reporting obligation for blocked and rejected transactions to cover all US persons and non-US persons subject to US jurisdiction, not financial institutions exclusively, as had previously been the practical scope for rejected transaction reporting specifically. The same rulemaking introduced a new, independent reporting requirement: US persons must also report when previously blocked property is subsequently unblocked or transferred, within 10 business days of that event, under 31 C.F.R. § 501.603(b)(3), a reporting obligation that simply didn’t exist in this form before the rule took effect.

A brand new form: the September 2025 update

OFAC continues actively refining these mechanics. On 19 September 2025, OFAC published a new, simplified submission form, the Unblocking/Transfer Report Form TD F 93.10, specifically for complying with the unblocking and transfer reporting requirement introduced by the 2024 rule. Reports are now filed through OFAC’s electronic Reporting System, ORS, rather than by the older paper or email-based methods that were previously acceptable; OFAC will consider alternative filing methods only for extraordinary circumstances, and starts from a presumption of denying such requests.

Real penalties for getting reporting wrong, in current dollars

Failing to timely file an ARBP, or any required blocking, rejection, or unblocking report, is a violation of 31 C.F.R. Part 501 in its own right, independent of whatever underlying sanctions issue triggered the blocking. As of the most recent inflation adjustment (effective per 90 Fed. Reg. 3687, January 2025), the civil penalty framework allows up to $3,642 if a report is filed within the first 30 days after it was due, rising to up to $7,289 if filed more than 30 days late, with an additional $1,459 for every further 30-day period the report remains overdue, for as long as five years. These figures apply to the reporting failure alone, separate from and in addition to any penalty tied to the underlying sanctions violation itself.

How an asset freeze actually ends

Blocked property doesn’t simply stay frozen indefinitely by default with no path forward. It can be unblocked through OFAC delisting the underlying blocked person, through a specific OFAC licence authorising release of that particular property, or through a general licence covering a defined category of otherwise-blocked transactions. Whenever property does get unblocked or transferred, the 2024 rule’s new reporting requirement means that event itself now has to be reported to OFAC within 10 business days, closing what had previously been a gap in OFAC’s visibility into how long blocked property actually stayed blocked and what ultimately happened to it.

Building compliant blocking procedures

A firm with genuine exposure to blocked property needs procedures covering the full lifecycle, not just the initial blocking decision: a documented process for immediately moving blocked funds into a properly interest-bearing account, whether individually titled or a well-documented omnibus structure; a calendar-driven system ensuring the 10-business-day initial report deadline is never missed, since it applies from the date of blocking, not from when someone happens to notice it; a standing process for the annual ARBP deadline every 30 September; and, since the 2024 rule change, an equally reliable process for reporting any unblocking or transfer event within its own 10-business-day window. Given how recently these specific obligations changed, a compliance programme’s written procedures need active confirmation that they reflect the current 2024-2025 rule set, not a version drafted before the reporting scope expanded.

Frequently asked questions

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