Basel I

Basel I is the round of deliberations by central bankers from around the world, and in 1988, the Basel Committee on Banking Supervision (BCBS) in Basel, Switzerland, published a set of minimum capital requirements for banks. This is also known as the 1988 Basel Accord, and was enforced by law in the Group of Ten (G-10) countries in 1992. A new set of rules known as Basel II was later developed with the intent to supersede the Basel I accords. However they were criticized by some for allowing banks to take on additional types of risk, which was considered part of the cause of the US subprime financial crisis that started in 2008. In fact, bank regulators in the United States took the position of requiring a bank to follow the set of rules (Basel I or Basel II) giving the more conservative approach for the bank. Because of this it was anticipated that only the few very largest US Banks would operate under the Basel II rules, the others being regulated under the Basel I framework. Basel III was developed in response to the financial crisis; it does not supersede either Basel I or II, but focuses on different issues primarily related to the risk of a bank run.

The Committee was formed in response to the messy liquidation of Cologne-based Herstatt Bank in 1973. On 26 June 1974 a number of banks had released Deutschmarks (the German currency) to the Herstatt Bank in exchange for dollar payments deliverable in New York City. Due to differences in the time zones, there was a lag in the dollar payment to the counterparty banks; during this lag period, before the dollar payments could be effected in New York, the Herstatt Bank was liquidated by German regulators.

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