13SEP

Two Iran wind-down windows shut four days apart

3 min read

13:27UTC

OFAC gazetted General Licences CC and DD in the Federal Register on Friday 11 September. Holland & Knight reads the notice as expiring the banking licence on 19 September and the aviation licence on 23 September.

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OFAC, the Office of Foreign Assets Control that runs US sanctions programmes, gazetted Iran-related General Licence CC and General Licence DD in the Federal Register on Friday 11 September 2026 as Document 2026-18576 ¹. The law firm Holland & Knight, reading the notice for clients, puts the expiry of General Licence CC at 00:01 Eastern time on Saturday 19 September and General Licence DD at 00:01 Eastern on Wednesday 23 September ². The 23 September date has not previously appeared in reporting.

A general licence is standing permission that nobody has to apply for, and a wind-down licence is the narrow version: a fixed period in which existing business may be closed out and nothing new begun. General Licence CC covers dealings with the three Golden Global institutions OFAC designated on 4 September over alleged transactions for the Revolutionary Guard's Quds Force . Golden Global Yatirim Bankasi denied the allegations to Turkey's disclosure platform the same evening , and the group's asset manager closed three funds to new subscriptions four days later .

General Licence DD covers aviation, and it permits only the settling up. It was issued on 8 September alongside the suspension of General Licence J-1, the standing carve-out that had let non-Iranian carriers pay to overfly Iran, take on fuel there and make emergency or temporary landings . A carrier holding an unpaid overflight invoice from before 8 September, a fuel bill from an Iranian airport, or an aircraft still on Iranian ground has until 23 September to clear it. Pay the same invoice on 24 September and it becomes a violation rather than a wind-down.

OFAC is retiring these exits on a published calendar rather than closing them in one stroke. OFAC adopted a presumption of denial for Iran licence applications on 10 September , so a counterparty that misses its window applies into a queue whose default answer is no.

Deep Analysis

In plain English

American sanctions law does not simply ban a company from dealing with a sanctioned party overnight. It usually gives a window to unwind existing business: pay the outstanding invoice, close the account, get the aircraft home. That window is called a wind-down licence. The US Treasury has now published two of them for Iran. One covers dealings with three Turkish financial institutions sanctioned on 4 September. The other covers airlines that used to pay to fly over Iran, refuel there or land there in an emergency. A law firm reading the published notice says the first window shuts on 19 September and the second on 23 September. After that, paying the same old bill stops being permitted tidying-up and becomes a breach.

Deep Analysis

Root Causes

Sanctions exposure does not sit in new business. It sits in unsettled invoices, custody positions and aircraft that are already somewhere, and closing those takes signatures from parties who are not being sanctioned and have no deadline of their own.

The two licences reach different populations. General Licence CC is a banking and funds problem: correspondent relationships, distributors and custodians holding Golden Global paper. General Licence DD is an aviation problem: overflight billing, bunkering settlements and aircraft on Iranian ground. Almost nobody is exposed to both.

A wind-down licence only helps a party that has spotted its own exposure. A custodian holding fund units through a distribution platform, or a lessor whose aircraft was serviced under a subcontract, can hold exposure without a name on any designation list, and the calendar runs for them at the same speed.

Escalation

Up, on a fixed calendar rather than on a decision. The trigger dates are 19 and 23 September, and the party that moves is any counterparty that discovers its exposure after the window has shut.

What could happen next?

Consequence
Any Golden Global counterparty still holding exposure after 19 September has no authorised route out and has to choose between freezing the position and explaining a transfer to Treasury.
Short term · Assessed
Risk
The 23 September aviation date has not previously appeared in reporting, so an exposed lessor or maintenance provider may not know the window exists.
Immediate · Assessed
Precedent
Retiring carve-outs on a published calendar rather than in one stroke lets Treasury fix the date exposure crystallises without naming a single counterparty.
Long term · Suggested

Source Landscape

This story draws on neutral-leaning sources

Primary parallel: When the United States left the nuclear deal on 8 May 2018, Treasury retired the Iran carve-outs on a published calendar too, giving counterparties 90-day and 180-day wind-down periods rather than an immediate prohibition. Anyone who missed a window applied for a specific licence instead.

Counter-parallel: Those windows ran months. General Licence CC was issued on 4 September and lapses on 19 September; General Licence DD was issued on 8 September and lapses on 23 September. A counterparty that needs a court, a custodian or a foreign regulator to sign off has no realistic chance of closing inside a fortnight.

The deadlines fall four days apart, which puts two unrelated sets of counterparties into the same fortnight of forced closing. Banks and custodians face 19 September; carriers, lessors and maintenance providers face 23 September.

The structural cost lands in what replaces the licence. After the second date, an entity with a lawful reason to settle an old Iranian bill has to ask permission case by case, and Treasury adopted a presumption of denial for Iran licence applications on 10 September .

Consensus view: Holland & Knight, reading the gazetted notice for clients, gives the two deadlines as 00:01 Eastern on 19 September for General Licence CC and 00:01 Eastern on 23 September for General Licence DD. No other reading of the notice has been published.

Counter-view: Aviation trade reporting collected for this briefing puts the added cost of flying around Iranian airspace at $6,000 to $7,500 per flight-hour, and names Lufthansa, SWISS, Austrian, Emirates, flydubai and Qatar Airways among the carriers already doing it.

The European Union Aviation Safety Agency has advised against flying the Tehran flight information region at any altitude. On that picture the aviation cliff on 23 September reaches a narrow population: carriers, lessors and maintenance shops that still hold unpaid Iranian invoices from before 8 September.

Key tension: No party has published how many counterparties actually hold outstanding wind-down obligations under either licence, so the size of both deadlines is asserted rather than measured.

Sources:Federal Register / US Treasury OFAC·Federal Register / US Treasury OFAC·Holland & Knight

Mentions:OFAC →Federal Register →Holland & Knight →Islamic Revolutionary Guard Corps (IRGC) →IRGC Quds Force →Emirates →Iran →Qatar →Turkey →Tehran →United States →US Treasury →European Union →

First Reported In

Update #178 · Saudi bypass hit, and Riyadh holds fire

Federal Register / US Treasury OFAC· 13 Sept 2026

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Causes and effects

Caused by

OFAC blacklists three Turkish Golden Global institutions

General Licence CC winds down dealings with the Golden Global entities designated on 4 September.

Occurred 3 Sept 2026

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OFAC designates 27 of Iran's airlines

General Licence DD winds down the aviation dealings left by the suspension of General Licence J-1.

Occurred 7 Sept 2026

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Treasury defaults Iran licences to no

A presumption of denial means no replacement authorisation follows the wind-down.

Occurred 9 Sept 2026

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Golden Global shuts three of its funds

Golden Global closed three funds before the wind-down window was gazetted.

Occurred 7 Sept 2026

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Golden Global denies the allegations that same evening

The designated bank's denial stands against the licence that winds its business down.

Occurred 4 Sept 2026

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This Event

Two Iran wind-down windows shut four days apart

Banking and aviation counterparties lose their authorised route out of Iranian business within four days of each other, on a published calendar.

Different Perspectives

United States

OFAC gazetted two wind-down licences expiring four days apart and adopted a presumption of denial for new Iran sanctions requests, while the State Department separately sanctioned Kataib Hezbollah and Hezbollah financial networks. Washington is closing legal channels on a published calendar rather than all at once.

United Arab Emirates

Crown Prince Sheikh Khaled bin Mohamed bin Zayed Al Nahyan met Iran's president in New Delhi, the first known face-to-face since the war began, weeks after cutting all Emirati trade and financial dealings with Iran. Abu Dhabi is running economic pressure and diplomatic contact at the same time.

Houthis

Houthi forces completed the capture of Yemen's Red Sea coast and Mayun island this week, an offensive a Houthi official confirmed alongside Yemeni government officers. The gain locks in the Bab al-Mandeb closure to Saudi crude declared as an embargo on 23 July.

Iran

Foreign Ministry spokesman Esmail Baghaei credited Iranian diplomacy backed by military strength for pushing neighbours to negotiate, citing the Oman safe-passage talks, while addressing none of the pipeline strike, the Iraqi dismissals or Saudi restraint directly.

Iraq

Prime Minister Ali al-Zaidi sacked two Maysan officials, closed and reopened three Iran border crossings inside three days, and approved a joint inquiry with Tehran into the launch site on his own territory. He is managing a militia network he does not fully control rather than confronting it.

Saudi Arabia

Riyadh's Foreign Ministry confirmed the Petroline strike, named no attacker, and said it would hold off retaliating at Iraq's request while reserving the right to act on its own sovereignty. It expects Baghdad's inquiry, not a Saudi strike, to be the next move.