Bank secrecy in the context of Public-key cryptography

Credit Suisse Group AG (French pronunciation: [kʁe.di sɥis], lit. 'Swiss Credit') was a global investment bank and financial services firm founded and based in Switzerland. According to UBS, eventually Credit Suisse was to be fully integrated into UBS. While the integration was yet to be completed, both banks are operating separately. However, on May 31, 2024, it was announced that Credit Suisse ceased to exist. Headquartered in Zürich, as a standalone firm, it maintained offices in all major financial centres around the world and provided services in investment banking, private banking, asset management, and shared services. It was known for strict bank–client confidentiality and banking secrecy. The Financial Stability Board considered it to be a global systemically important bank. Credit Suisse was also a primary dealer and Forex counterparty of the Federal Reserve in the United States.

Credit Suisse was founded in 1856 to fund the development of Switzerland's rail system. It issued loans that helped create Switzerland's electrical grid and the European rail system. In the 1900s, it began shifting to retail banking in response to the elevation of the middle class and competition from fellow Swiss banks UBS and Julius Bär. Credit Suisse partnered with First Boston in 1978 before buying a controlling share of the bank in 1988. From 1990 to 2000, the company purchased institutions such as Winterthur Group, Swiss Volksbank, Swiss American Securities Inc. (SASI), and Bank Leu.

A tax haven is a term, often used pejoratively, to describe a place with very low tax rates for non-domiciled investors, even if the official rates may be higher.

In some older definitions, a tax haven also offers financial secrecy. However, while countries with high levels of secrecy but also high rates of taxation, most notably the United States and Germany in the Financial Secrecy Index (FSI) rankings, can be featured in some tax haven lists, they are often omitted from lists for political reasons or through lack of subject matter knowledge. In contrast, countries with lower levels of secrecy but also low "effective" rates of taxation, most notably Ireland in the FSI rankings, appear in most § Tax haven lists. The consensus on effective tax rates has led academics to note that the term "tax haven" and "offshore financial centre" are almost synonymous. In reality, many offshore financial centers do not have harmful tax practices and are at the forefront among financial centers regarding AML practices and international tax reporting.

A non-disclosure agreement (NDA), also known as a confidentiality agreement (CA), confidential disclosure agreement (CDA), proprietary information agreement (PIA), or secrecy agreement (SA), is a legal contract or part of a contract between at least two parties that outlines confidential material, knowledge, or information that the parties wish to share with one another for certain purposes, but wish to restrict access to. Doctor–patient confidentiality (physician–patient privilege), attorney–client privilege, priest–penitent privilege and bank–client confidentiality agreements are examples of NDAs, which are often not enshrined in a written contract between the parties.

It is a contract through which the parties agree not to disclose any information covered by the agreement. An NDA creates a confidential relationship between the parties, typically to protect any type of confidential and proprietary information or trade secrets. As such, an NDA protects non-public business information. Like all contracts, they cannot be enforced if the contracted activities are illegal. NDAs are commonly signed when two companies, individuals, or other entities (such as partnerships, societies, etc.) are considering doing business and need to understand the processes used in each other's business for the purpose of evaluating the potential business relationship. NDAs can be "mutual", meaning both parties are restricted in their use of the materials provided, or they can restrict the use of materials by a single party. An employee can be required to sign an NDA or NDA-like agreement with an employer, protecting trade secrets. In fact, some employment agreements include a clause restricting employees' use and dissemination of company-owned confidential information. In legal disputes resolved by settlement, the parties often sign a confidentiality agreement relating to the terms of the settlement. Examples of such agreements are The Dolby Trademark Agreement with Dolby Laboratories, the Windows Insider Agreement, and the Halo CFP (Community Feedback Program) with Microsoft.

The Swiss Banking Act or Federal Act on Banks and Savings Banks is a Swiss federal law and act-of-parliament that operates as the supreme law governing banking in Switzerland. Although the federal law has only been amended seven times, it has been revised multiple times to limit and expand its banking secrecy provisions since its ratification. The banking secrecy provisions in the Federal Act are additionally enforced through multiple civil codes in the federal Swiss Civil Code and locally through cantonal law. In December 2017, the Swiss parliament launched a standing initiative and expressed an interest in formally embedding banking secrecy within the Swiss Federal Constitution rendering it a federally-protected constitutional right.

The law was passed by the Federal Assembly of the Swiss Confederation on February 2, 1934, through the power of the constitution's 34th and 64th articles. It was put into force on March 1, 1935. The federal law is best known for Article 47, the specifications regarding banking secrecy. Article 47 makes it a federal crime to disclose the information or activity of clients banking domestically to foreign entities, third parties, or even Swiss authorities without either a) consent or b) an accepted criminal complaint. Many Articles within the Federal Act concern themselves with banking supervision for the sole purpose of enforcing Article 47. The passage of the law (along with key court precedents expanding its meaning) makes Switzerland home to the most strict and expansive banking secrecy laws in the world.

Numbered bank accounts are bank accounts wherein the identity of the holder is replaced with a multi-digit number known only to the client and selected private bankers. Although these accounts do add another layer of banking secrecy, they are not completely anonymous as the name of the client is still recorded by the bank and is subject to limited, warranted disclosure.

During the 1910s, bankers from Switzerland created numbered bank accounts to add a layer of anonymity for European clients seeking to avoid paying World War I taxes. With the passage of the Swiss Banking Law of 1934, this practice proliferated across the banking industry in Switzerland. Some Swiss banks supplement the number with a code name such as "Cardinal", "Octopussy" or "Cello" as an alternative manner to identify the client. However, to open this type of account in Switzerland, clients must pass a multi-stage clearance procedure and prove to the bank the lawful origins of their assets. Banking institutions that have adopted this practice in Europe, Asia, and the Americas also require clients to undergo stringent vetting and provide the identity of the beneficial owner. The usage of fake names to open these accounts is prohibited in Switzerland, the European Union, the United States, and other off-shore financial centers.