Herstatt Bank Failure: The Birth of Settlement Risk

Key Takeaways

• Herstatt was a Cologne bank shut on June 26, 1974, after large foreign-exchange losses.
• Regulators closed it mid-afternoon, after Deutsche Mark payments in but before dollars went out.
• The timing gap defined "Herstatt risk," the danger of paying one currency and not receiving the other.
• The failure led to the 1974 Basel Committee and, later, continuous linked settlement.

Background

Bankhaus I.D. Herstatt was a private bank in Cologne, West Germany, founded by Iwan Herstatt, with the industrialist Hans Gerling holding about 81.4 percent of its shares. It was not a giant. By the time it failed it ranked around the 35th largest bank in the country, according to Bank of England archive material reviewed by the central bank's research blog. It was still a real institution with more than 50,000 customers and a recognized name in German finance.

The early 1970s were a dangerous time to be trading currencies. The Bretton Woods system of fixed exchange rates had broken down after the United States cut the dollar's link to gold in 1971, and major currencies began to float against each other. Floating rates meant daily swings that a bank could bet on, and Herstatt did. It built up large positions in forward foreign-exchange contracts, mostly short the US dollar, betting the dollar would move in its favor.

The bank told its supervisors that much of this forward book covered real commercial needs for large industrial customers in the Ruhr region. Investigators later found that claim did not hold up. According to the Oxford English Historical Review study of the 1974 failures, supervisors found "no evidence was produced for the cover." A great deal of the position was speculation, and the size of it dwarfed the bank's own capital.

The structure of foreign-exchange trading at the time made any such bet uniquely fragile. A currency trade has two legs that settle in two different countries and two different time zones. When a European bank buys dollars for Deutsche Marks, it pays the marks in Frankfurt during European hours and expects the dollars in New York hours later, once American banks are open. For the hours in between, one side has paid and the other has not. Nobody had built a system to close that gap.

What Happened

By the spring of 1974, German supervisors and Herstatt's own auditors were closing in on the scale of the losses. The forward positions had moved badly against the bank, and the hole was far larger than its capital could absorb. The acute phase came on a single afternoon.

• Early 1970s: After Bretton Woods collapses, Herstatt takes large speculative forward positions, mostly short the US dollar.
• First half of 1974: Currency moves go against the bank. Investigators find the parent company in Cologne had suffered roughly DM470 million in losses against reserves of only about DM44 million, per the Oxford EHR study, with actual losses higher still.
• June 26, 1974, 16:30 Cologne time (10:30 in New York): German regulators withdraw Herstatt's banking license and order it closed.
• That same day: Counterparties had already paid Deutsche Marks to Herstatt earlier in the European session, expecting US dollars in return once New York opened. Because it was still morning in New York, those dollar legs had not yet been paid.
• Late June 1974: Herstatt's New York correspondent stops making the outstanding dollar payments. The European Central Bank later put the dollars owed to counterparties at roughly USD 620 million.
• Late June to early July 1974: New York banks hold up outgoing payments until accounts are in credit, which nearly freezes the clearing process. On two or three days it runs until 1am. The New York Clearing House introduces recall procedures on July 1.

The mechanics of the closure are the whole story. Regulators chose the afternoon in Germany without coordinating across time zones. At that hour, the day's Deutsche Mark legs into Herstatt were already done and irreversible, while the matching dollar legs out of New York had not started. Trading partners had handed over real money and were left holding an unenforceable claim on a bank that no longer existed.

The shock spread through the plumbing of the market. Correspondent banks in New York, unsure who was good for what, simply stopped releasing dollar payments until they could confirm the funds were there. That defensive reaction, sensible for each bank alone, gummed up the shared clearing system for everyone, the disruption the Bank of England archives describe.

Why It Happened

Three things had to line up for one mid-sized bank to dislocate the global currency market: reckless trading, a settlement system with a built-in blind spot, and a closure timed without regard to it.

Start with the trading. Herstatt ran an outsized speculative forward book against the dollar with little genuine commercial cover behind it. When the bet went wrong, the losses, on the order of DM470 million against reserves near DM44 million, were many times the bank's capital. That made insolvency a question of when, not if. A bank cannot trade its way out of a hole that large.

The deeper cause was structural, and it had nothing to do with Herstatt specifically. Every cross-currency trade settled in two legs, in two jurisdictions, hours apart. Whichever party paid first was an unsecured creditor of the other until the second leg cleared. In normal times nobody thought about it, because banks paid as expected. The risk was always there, hidden inside routine settlement, waiting for one party to stop paying mid-cycle.

Herstatt's closure is what turned that latent risk into a live loss. The license was pulled at 16:30 in Cologne, which was 10:30 in the morning in New York. That single choice of timing maximized the damage. Had regulators waited until New York closed, both legs of the day's trades would have settled. Had they closed it before the European session, the mark legs would never have gone out. Closing in between caught the maximum number of trades in their most exposed state: marks paid in, dollars not yet paid out. This is the pattern that became known as Herstatt risk, also called foreign-exchange settlement risk, the danger that you pay for a currency and never receive the one you bought.

There was no safety net for it. There was no system that made the two payments happen together or not at all, and no international supervisor watching how a bank in one country could blow a hole in banks in another. The failure exposed both gaps at once.

By the Numbers

• Closure date and time: June 26, 1974, at 16:30 Cologne time, equal to 10:30 in New York. (Oxford EHR; ECB)
• Bank size: Around the 35th largest bank in West Germany, with more than 50,000 customers. (Bank of England, Bank Underground; Oxford EHR)
• Balance sheet: Liabilities of about USD 840 million against assets of about USD 380 million. (Oxford EHR)
• Trading losses: Roughly DM470 million in losses against reserves of only about DM44 million at the Cologne parent, with actual losses higher. (Oxford EHR)
• Ownership: Hans Gerling held about 81.4 percent of the shares; the bank was founded by Iwan Herstatt. (Oxford EHR)
• Dollars left unpaid: Approximately USD 620 million owed to counterparties when the dollar legs were halted. (ECB)
• Clearing disruption: New York clearing ran until 1am on two or three days; recall procedures introduced July 1, 1974. (Bank of England, Bank Underground)
• Regulatory response: The Basel Committee was set up by the G10 central bank governors at the end of 1974 and first met in February 1975. (BIS)
• Long-term fix: Continuous linked settlement began operating on September 9, 2002, with 39 settlement members in 7 currencies. (Deutsche Bundesbank; CLS Group)

Aftermath

The most durable consequence was institutional. Late in 1974, the central bank governors of the Group of Ten countries responded to what the Bank for International Settlements describes as "serious disturbances in international currency and banking markets (notably the failure of Bankhaus Herstatt in West Germany)" by creating a standing committee on banking supervision. Initially named the Committee on Banking Regulations and Supervisory Practices, it held its first meeting in February 1975 and met three or four times a year thereafter. The world knows it today as the Basel Committee on Banking Supervision, the body behind the Basel I, II, and III capital standards. It still sits at the BIS in Basel.

The Basel Committee did not, at first, solve the specific problem Herstatt had exposed. The Oxford study notes the committee "was unable to produce a plan to address the specific causes of the Herstatt collapse." Fixing settlement risk itself took decades and a different track. Through the late 1980s and 1990s the G10 central bank community studied FX settlement risk repeatedly and pressed the industry to build a market-wide fix. The private sector eventually delivered one.

That fix was continuous linked settlement. CLS Bank began operating on September 9, 2002, with 39 settlement members in 7 currencies, according to the Deutsche Bundesbank. It settles each currency trade on a payment-versus-payment basis, meaning the two legs settle simultaneously through central bank accounts, so a payment in one currency happens if and only if the matching payment in the other currency happens. That mechanism removes the time-zone gap that killed Herstatt's counterparties. CLS has since grown to handle 18 currencies for around 70 settlement members and tens of thousands of third parties.

As for the bank and its people, the Herstatt name disappeared from banking. The failure remained a reference point for regulators and risk managers, and the phrase "Herstatt risk" became permanent shorthand for the danger that the two legs of a currency trade do not settle together.

Lessons for Investors

1. Settlement is not the same as agreement. A trade is not finished when both sides shake hands on a price. It is finished only when both payments are final and irreversible. Herstatt's counterparties had a valid trade and still lost, because the marks settled and the dollars never did. When you hold any claim, ask whether and when it actually settles, not just whether it was agreed.

2. Risk hides in the plumbing. The danger that sank Herstatt's partners was not in the price of any currency. It was in the mechanics of how cross-border payments cleared, a detail almost nobody priced until it cost roughly USD 620 million in a single morning. Operational and settlement risk can sit silent for years and then dominate everything.

3. Size is not the same as systemic importance. Herstatt ranked around 35th in its own country, yet its closure froze part of the New York clearing system and reshaped global rules. A counterparty does not have to be large to do outsized damage if it sits in a chain everyone else depends on.

4. Leverage against your own capital is the real solvency test. Herstatt's losses ran many times its reserves, roughly DM470 million against DM44 million. Once losses dwarf capital, no amount of trading can recover the position. Whenever you assess a financial firm, measure its potential losses against its capital, not against its revenue or its reputation.

5. Good safeguards usually arrive after the loss, not before. The simultaneous-settlement fix that would have saved Herstatt's counterparties, payment-versus-payment through CLS, did not exist until 2002, nearly thirty years later. Do not assume that because a risk is well known it is well covered. Markets often build the seatbelt only after the crash.

Frequently Asked Questions

What was the Herstatt Bank failure in simple terms? The Herstatt Bank failure was the June 26, 1974, collapse of a mid-sized German bank in Cologne after large foreign-exchange trading losses. Regulators closed it in the afternoon, after its partners had paid in Deutsche Marks but before they got their dollars back, leaving them exposed.

Why did the Herstatt Bank failure happen? Herstatt took large speculative bets in forward currency contracts, mostly against the US dollar, and the losses grew far beyond its capital. When German regulators withdrew its license at 16:30 local time, the timing trapped counterparties who had paid one leg of their trades but not yet received the other.

How much money was lost in the Herstatt Bank failure? The Cologne parent had suffered roughly DM470 million in losses against reserves of only about DM44 million, per the Oxford English Historical Review study. The European Central Bank put the US dollar payments left outstanding to counterparties at around USD 620 million.

Could a Herstatt-style failure happen again today? For trades settled through continuous linked settlement, which began in 2002, the time-zone gap is largely closed because both currency legs settle simultaneously on a payment-versus-payment basis. The risk persists for trades that settle outside such systems, which is why regulators still track FX settlement risk.

What is the main lesson from the Herstatt Bank failure? A currency trade can be agreed and partly paid and still leave you with a total loss if the two legs do not settle together. The episode shows that settlement mechanics, not just prices and credit, can be the thing that ruins you.

Sources

1. Bank for International Settlements. History of the Basel Committee. https://www.bis.org/bcbs/history.htm
2. European Central Bank. Financial Stability Review, Box: More than thirty years after the Herstatt case. December 2007. https://www.ecb.europa.eu/press/financial-stability-publications/fsr/focus/2007/pdf/ecb~ccda416def.fsrbox200712_19.pdf
3. Deutsche Bundesbank. Continuous Linked Settlement (CLS). https://www.bundesbank.de/en/tasks/payment-systems/oversight/continuous-linked-settlement-626502
4. Schenk, Catherine R. Summer in the City: Banking Failures of 1974 and the Development of International Banking Supervision. The English Historical Review, Oxford University Press. 2014. https://academic.oup.com/ehr/article/129/540/1129/2769724
5. Bank of England, Bank Underground. BoE archives reveal little known lesson from the 1974 failure of Herstatt Bank. 2015. https://bankunderground.co.uk/2015/06/24/boe-archives-reveal-little-known-lesson-from-the-1974-failure-of-herstatt-bank/
6. CLS Group. CLS and FX: A pioneering partnership with pivotal purpose (ShapingFX Series). https://www.cls-group.com/insights/the-fx-ecosystem/fx-ecosystem-07-cls-and-fx-a-pioneering-partnership-with-pivotal-purpose/
7. Market Histories. Herstatt Bank: How Cologne Created Settlement Risk (1974). https://www.markethistories.com/en/the-herstatt-bank-failure-how-one-afternoon-in-cologne-created-settlement-risk-1974

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.