OFAC’s October Iran Package: Presumed Denial, Turkish Bank, BitBank

WarBrief Live | October 31, 2026 | Sanctions Tracker

In September 2026, the United States tightened its Iran sanctions in three linked moves: a near-blanket refusal policy for Iran-related licences, the blocking of a Turkish bank accused of serving Iran’s sanctioned banking network, and the designation of a crypto exchange allegedly moving Hormuz transit payments to the Revolutionary Guard. Together, they show how Washington is now targeting the plumbing of Iran-related finance, not only its headline names.

What is the target of this package?

The package is not a single designation. It is a September 2026 sequence within the US Treasury’s Operation Economic Outcast campaign, launched on August 24, 2026, to cut Iran’s remaining economic lifelines across aviation, digital assets, gold, shipping and technology. The licensing policy affects anyone seeking permission for otherwise prohibited Iran-related activity; the bank designation warns foreign financial institutions; the BitBank designation warns crypto platforms and shipping payers.

All three actions were taken principally under Executive Order 13902, which covers sectors of Iran’s economy. A designation to the Specially Designated Nationals and Blocked Persons (SDN) List blocks property in US jurisdiction and generally prohibits US persons from dealing with the listed party; foreign parties can also face secondary-sanctions exposure if they materially support a designated person.

What measures are already in place?

The United States has long maintained a comprehensive Iran sanctions programme under the Iranian Transactions and Sanctions Regulations (31 C.F.R. part 560). Most dealings with Iran are prohibited unless authorised by a general licence or a specific licence granted on application. That architecture is the reason the September 2026 licensing change matters so much: it does not create a new prohibition, but it changes the default answer to a request for permission.

WarBrief’s Sanctions Tracker hub follows this programme, with earlier entries on the Graham Act waiver and what Washington could target before November.

What did OFAC do in September 2026?

Figures and dates above are as reported by the US Treasury and summarised in the cited law-firm briefs; allegations in designations are US government allegations, not court findings.

September 4: the Turkish bank designation

On September 4, 2026, OFAC designated Golden Global Yatirim Bankasi Anonim Sirketi, an Istanbul investment bank, and two subsidiaries, Golden Global Portfoy Yonetimi and Golden Global Varlik Kiralama, under Executive Order 13902. The Treasury alleged the bank facilitated tens of millions of dollars in transactions for the Islamic Revolutionary Guard Corps-Qods Force (IRGC-QF) and provided what it called key correspondent banking access that let Iranian institutions move funds internationally.

The most consequential allegation was structural: the Treasury said the bank was established to enable Iran’s “rahbar network” to move oil revenues from buyers in China to Turkey, where they could be converted into cash and gold by money exchangers. It also linked accounts at the bank to Turkish businessman Sitki Ayan, designated by OFAC in December 2022 over alleged Iranian oil sales. The bank denied the allegations and said it would contest the designation; a short wind-down general licence ran to September 19, 2026.

September 10: what does “presumed denial” actually mean?

On September 10, 2026, OFAC issued a Statement of Licensing Policy establishing a presumption of denial for requests for specific licences to engage in activities otherwise prohibited by Iran sanctions. In practice, that means an application starts from “no” rather than from a case-by-case balancing test. OFAC said licences would be issued only as required by law or in exceptional and urgent circumstances, such as risk to life, limb or environmental safety, and applicants should include a written attestation of those circumstances.

Squire Patton Boggs reported that OFAC had since denied a high volume of pending applications under the new policy, including applications once granted routinely, and that licences currently in effect had not been revoked en masse but would in most cases not be renewed. Existing authorisations are therefore not automatically void, but the path to a fresh licence has narrowed sharply. The United Kingdom followed on September 23, 2026, with a similar presumption of denial for designated Iranian banks operating in the UK.

September 17: why was BitBank designated?

On September 17, 2026, OFAC designated BitBank, an Iranian digital-assets exchange, its software developer Pishtaz Simorgh Electronic Trade Company, and three associates of previously sanctioned Iranian financier Babak Zanjani: Hossein Ali Zaker Hossein, Mohammad Mahdi Zaker Hossein and Seyed Adel Heidari. The Treasury described them as key components of Iran’s digital-asset-based sanctions-evasion infrastructure.

Two alleged flows underpinned the action. First, between June and July 2026, BitBank was allegedly used to move hundreds of millions of dollars in Bitcoin to the IRGC. Second, since June 2026 the Hormuz Safe Marine Services Authority, itself designated on July 29, 2026, allegedly used BitBank to transfer payments it received to Iran. Hormuz Safe is the scheme under which vessels have reportedly been charged $1 million to $2 million for “safe passage” through the Strait of Hormuz. The Treasury published no wallet addresses with the designation, so firms must screen on names, counterparties and transaction patterns rather than an address blocklist.

What does this mean for banks, exchanges and shippers?

For banks, the Golden Global case warns that providing account and clearing access can itself be the sanctionable conduct, even for a small institution — the bank was ranked Turkey’s 35th-largest by assets in reporting on the designation. For crypto platforms, BitBank extends the same logic to exchanges: handling funds traceable to a designated network, or to a scheme such as Hormuz Safe, creates direct sanctions exposure under US law.

For shippers, a strait-transit payment moving through a designated exchange can create exposure for every intermediary in the chain. For licence applicants, the message is equally blunt: without a clear, evidenced claim of legal requirement or exceptional urgency, an Iran-related application should be expected to fail.

What to watch next

Watch for further Operation Economic Outcast tranches, for any change in Golden Global’s status following its promised legal challenge, and for wallet addresses or additional exchanges in the BitBank network that would turn a name-based warning into a screenable list. WarBrief will update this entry if any of those developments is confirmed.

Educational content only. This entry explains publicly reported sanctions measures; it is not legal advice and does not assess any reader’s specific transaction or licence position.

Frequently asked questions

What is OFAC’s presumed-denial policy for Iran?
It is a September 10, 2026 licensing policy under which Iran-related specific licence applications are presumed to be denied, and are granted only as required by law or in exceptional and urgent circumstances such as risk to life, limb or environmental safety.

Why was Golden Global Yatirim Bankasi designated?
OFAC alleged on September 4, 2026 that the Istanbul bank facilitated tens of millions of dollars in IRGC-Qods Force transactions, provided correspondent banking access for Iranian institutions, and was established to enable Iran’s rahbar network to move oil revenues from China to Turkey for conversion into cash and gold. The bank denied the allegations.

What did BitBank allegedly do?
OFAC alleged on September 17, 2026 that BitBank moved hundreds of millions of dollars in Bitcoin to the IRGC between June and July 2026, and that since June the Hormuz Safe Marine Services Authority had used it to transfer payments it received to Iran.

Does a designation mean a court has found wrongdoing?
No. A designation is an administrative action based on US government allegations; it blocks property in US jurisdiction and prohibits dealings by US persons, but it is not a criminal conviction.

Sources

• Squire Patton Boggs: Sanctions brief – October 2026
• Legal 500: September 2026 US Sanctions Roundup – Operation Economic Outcast
• CoinDesk: Iran’s Strait of Hormuz toll booth ran through a Bitcoin exchange, US says
• Middle East Forum: Turkey’s Bank for Iran’s Oil
• Sigma7: September 2026 sanctions guide