Chapter 1 of 3 · 3 min

What is OFAC and how did US economic sanctions begin?

Learn what OFAC does, when it was founded, and how US economic sanctions trace back to the 1940 FFC and the 1950 Korean War emergency.

TL;DW

OFAC enforces US economic and trade sanctions from within the Treasury. Its roots trace to a 1940 wartime agency called the FFC, created to block Nazi access to occupied nations' assets. OFAC itself was established in 1950 after Truman froze Chinese and Korean assets during the Korean War. Sanctions are either comprehensive, covering an entire country, or selective, targeting specific individuals or sectors.

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Lesson · 3 parts

OFAC sits within the US Treasury and administers economic and trade sanctions on behalf of the US government, targeting foreign countries and designated individuals whose conduct threatens national security or foreign policy objectives. The sanctions toolkit combines asset blocking with trade restrictions, which together let the US apply economic pressure without military escalation. When you work in financial services, understanding OFAC's mandate is foundational: your institution's customer screening and transaction monitoring systems are built around OFAC's published lists and program guidance.

Before OFAC existed, the US Treasury operated a predecessor called the Office of Foreign Funds Control. The FFC was created in 1940 after Germany invaded Norway, designed specifically to stop Nazi Germany from accessing and exploiting the foreign exchange reserves, securities, and other assets of occupied territories. It also blocked attempts to force funds from civilians in those countries back to Berlin. This wartime agency proved that the US could weaponize Treasury authority as a foreign policy instrument, laying the operational groundwork for what would become OFAC a decade later.

When China entered the Korean War in 1950, President Truman declared a national emergency and froze all Chinese and North Korean assets under US jurisdiction. That executive action established what became OFAC as a permanent Treasury function. You will encounter two categories of OFAC sanctions in your work: comprehensive programs prohibit virtually all economic and financial dealings with a target country, while selective programs designate named individuals, organizations, or specific sectors for asset blocking and trade restrictions without covering the entire country. Many of the most active daily compliance situations involve selective programs.

Study notes

Part 1 of 3 · 0:00 to 0:53

The mandate of the US Office of Foreign Assets Control

Concept OFAC stands for the Office of Foreign Assets Control, a division of the US Treasury. Its mandate is to implement and enforce economic and trade sanctions against foreign governments, entities, and individuals that pose a threat to US national security, foreign policy, or the economy. Sanctions can include asset freezes, transaction prohibitions, and trade restrictions. OFAC does not prosecute crimes directly; it administers the legal framework that financial institutions and businesses must follow to stay compliant.

Why it matters Sanctions give the US government a coercive tool that sits between diplomacy and military action. When a country or organization engages in behavior the US considers harmful, a military response may be disproportionate and diplomacy alone may be insufficient. Sanctions create economic pressure designed to change the calculus of the targeted party. This is why compliance officers should treat OFAC screening as part of a broader foreign policy enforcement mechanism, not simply another AML watchlist.

Do this

Open the OFAC portal at treasury.gov/ofac and bookmark it for your daily compliance work.
Review the About OFAC section to familiarize yourself with the office's legal basis and organizational scope.

Part 2 of 3 · 0:53 to 1:41

The wartime origins of the FFC in 1940

Concept The Office of Foreign Funds Control was the US Treasury's wartime currency and asset control bureau, operating from 1940 until it was succeeded by OFAC in 1950. Its core function was to identify foreign assets held in the United States and restrict their use whenever those assets might benefit an enemy government or occupying power. Understanding this lineage matters because it shows that sanctions authority was not invented after the Cold War: the legal and operational muscle was built under wartime necessity and then institutionalized permanently.

Example When the FFC was created in 1940, one of its immediate tasks was freezing Norwegian assets held in US accounts to prevent Germany from accessing them after the invasion. A Norwegian shipping company's dollar accounts in New York, for example, could not be transferred or used without FFC authorization. This model of rapid, anticipatory asset freezing as a foreign policy response is exactly how OFAC operates today: the freeze happens at the moment of a triggering event, before any judicial process.

Pitfall The FFC and OFAC are frequently conflated in sanctions history discussions. Remember the distinction: the FFC was a wartime emergency bureau established in 1940 to handle foreign currency and asset controls broadly. OFAC was a new, permanent office created in 1950 around the Korean War asset freeze, with a more precisely defined foreign assets control mission. When reviewing historical compliance records or explaining your institution's sanctions lineage to regulators, keeping these two offices separate matters.

Part 3 of 3 · 1:41 to 2:48

OFAC's creation in 1950 and its two types of sanctions

Concept China's entry into the Korean War in November 1950 triggered a national emergency declaration by President Truman under authority granted by Congress. The resulting order froze all Chinese and North Korean assets under US control immediately. The key compliance lesson is that OFAC's blocking power is not a court order requiring a judicial process. It is an executive order with immediate legal effect, and financial institutions must act as soon as they identify a match, not after completing a full internal investigation.

Try it Open the OFAC sanctions programs list at the Treasury website and identify three countries currently under active sanctions. For each one, read the program description and determine whether it is comprehensive or selective. Note which sectors or individuals are targeted under selective programs. This exercise will calibrate your understanding of the range of OFAC authority and prepare you for the screening decisions you face when onboarding customers or processing payments involving counterparties from those jurisdictions.

Key terms

OFAC: The Office of Foreign Assets Control, a US Treasury division that administers and enforces economic and trade sanctions based on US foreign policy and national security goals.
FFC (Office of Foreign Funds Control): The wartime predecessor to OFAC, established in 1940 to prevent Nazi Germany from accessing the foreign exchange and securities of occupied nations.
Economic sanctions: Government-imposed restrictions on financial transactions, trade, or asset transfers targeting a foreign country, entity, or individual to advance policy objectives.
Comprehensive sanctions: A sanctions program that prohibits virtually all economic and financial dealings with a named country, such as the Iran or Cuba programs.
Selective sanctions: A sanctions program that designates specific individuals, entities, or sectors for restrictions without imposing a country-wide prohibition.

Key takeaways

OFAC is a US Treasury division that implements economic and trade sanctions against countries and designated individuals posing a threat to US national security.
Comprehensive sanctions prohibit all dealings with a target country; selective sanctions restrict named individuals, entities, or sectors within a broader relationship.

Watch out

The FFC and OFAC are different offices from different eras. The FFC was a 1940 wartime bureau; OFAC is the permanent 1950 successor with a distinct statutory foundation.

Check your understanding

Why did the US create the FFC in 1940, and what event a decade later led directly to OFAC's establishment as a permanent Treasury function?

The FFC was created in 1940 to prevent Nazi Germany from accessing the foreign exchange and securities of occupied nations after the invasion of Norway. OFAC was then established in 1950 when President Truman declared a national emergency in response to China's entry into the Korean War and ordered the immediate freeze of all Chinese and Korean assets under US control. That executive action institutionalized foreign assets control as a permanent Treasury function.

What is OFAC and how did US economic sanctions begin?

01 0:00 Concept The mandate of the US Office of Foreign Assets Control ▾

02 0:53 Concept The wartime origins of the FFC in 1940 ▾

03 1:41 Concept OFAC's creation in 1950 and its two types of sanctions ▾