Union Bank of Switzerland
Union Bank of Switzerland was a major Swiss universal bank that merged with Swiss Bank Corporation in 1998 to create UBS AG.
Last updated October 5, 2026
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Overview
Union Bank of Switzerland was a major Swiss banking institution whose roots lay in two 19th-century regional banks: Bank in Winterthur, founded in 1862, and Toggenburger Bank, founded in 1863. Those institutions combined in 1912, creating Schweizerische Bankgesellschaft, known in English as Union Bank of Switzerland and in French as Union de Banques Suisses. The bank used the initials UBS and became one of the principal institutions in Switzerland's banking system. During the twentieth century, Union Bank of Switzerland developed from a primarily domestic institution into a diversified universal bank. Its activities included deposit-taking, corporate and institutional banking, securities trading, asset management, private banking, and advisory services. Like other large Swiss banks, it benefited from Switzerland's position as an international financial centre, while also building a substantial domestic branch and corporate-banking network. The bank expanded its international presence through offices, subsidiaries, and investment-banking operations in major financial markets. The institution was also active in the consolidation of the Swiss banking sector. It grew through selected acquisitions and combinations, including the integration of Swiss Bank Corporation's former predecessor institutions into the broader history of the Swiss banking market. Its scale made it a major competitor to Credit Suisse and Swiss Bank Corporation in private banking, institutional securities, and corporate finance. In 1998, Union Bank of Switzerland and Swiss Bank Corporation agreed to merge. The transaction was presented as a strategic combination intended to create a stronger global financial-services group with greater scale in wealth management, investment banking, and asset management. The resulting company adopted the UBS name and became UBS AG. The Union Bank of Switzerland legal identity and standalone brand consequently disappeared, although the UBS initials and much of the combined group's Swiss heritage continued the legacy of both predecessor banks. Union Bank of Switzerland should therefore be distinguished from UBS AG and UBS Group AG, which are successor companies rather than the same legal entity. It is best understood as a historical Swiss banking brand and predecessor institution, not as a currently operating bank.
History
Union Bank of Switzerland originated in the consolidation of two nineteenth-century Swiss banks. Bank in Winterthur was established in 1862, while Toggenburger Bank was established in 1863. They merged in 1912 to form Schweizerische Bankgesellschaft, the German name used for Union Bank of Switzerland. The institution retained a strong Swiss identity while developing the international activities associated with the UBS initials. In its early decades, the bank served Swiss individuals, companies, and institutions through deposit, lending, and commercial-finance activities. Switzerland's industrialization and the expansion of cross-border commerce provided opportunities for the bank to grow beyond its original regional base. Over time, it added or expanded securities, investment, fiduciary, asset-management, and private-banking services, becoming a universal bank rather than a narrowly specialized commercial institution. The postwar period brought substantial internationalization. Union Bank of Switzerland established a presence in important financial centres and competed with other large Swiss banks for international private clients, institutional mandates, corporate relationships, and capital-markets business. Its activities increasingly covered the main divisions later associated with UBS: wealth management, asset management, investment banking, and Swiss banking. The bank's international profile was reinforced by the reputation of Switzerland as a centre for cross-border finance, although its business was also subject to the regulatory, political, and market pressures affecting global banks. Union Bank of Switzerland participated in the restructuring of the Swiss financial sector through growth and integration. It was one of the country's largest banks by the end of the twentieth century and operated alongside Swiss Bank Corporation and Credit Suisse as a leading competitor. The institutions had overlapping capabilities and international ambitions, creating a strategic rationale for consolidation as financial markets became more global and investment in technology, securities infrastructure, and international distribution became increasingly important. In 1998, Union Bank of Switzerland agreed to merge with Swiss Bank Corporation. The combination created UBS AG, at the time one of the world's largest financial-services groups. The merger united two historically important Swiss banking franchises and brought together their private-banking, asset-management, investment-banking, and domestic-bank activities. It also ended Union Bank of Switzerland as a separate legal and commercial organization. The UBS name was retained for the successor group, preserving the familiar initials while no longer representing the standalone pre-merger bank. The historical Union Bank of Switzerland is consequently a predecessor to UBS AG and, indirectly, UBS Group AG. Later events associated with UBS after 1998 should not automatically be attributed to Union Bank of Switzerland. The appropriate historical boundary is the 1998 merger: before that date, Union Bank of Switzerland was an independent Swiss universal bank; after it, its operations formed part of the successor UBS organization.
- 1998
Merger with Swiss Bank Corporation
[1]Union Bank of Switzerland merged with Swiss Bank Corporation to create UBS AG, ending the former bank's independent existence.
- 1912
Formation of Schweizerische Bankgesellschaft
[1]Bank in Winterthur and Toggenburger Bank merged to form Schweizerische Bankgesellschaft, known in English as Union Bank of Switzerland.
- 1863
Toggenburger Bank is founded
[1]Toggenburger Bank was established and subsequently became the second principal predecessor of the 1912 Union Bank of Switzerland.
- 1862
Bank in Winterthur is founded
[1]Bank in Winterthur was established in Switzerland and later became one of the two principal predecessor institutions of Union Bank of Switzerland.
Products and positioning
A large Swiss universal bank combining domestic banking, international private banking, asset management, and securities activities.
Retail and commercial banking
Swiss banking
The bank provided deposit-taking, lending, payments, and relationship-banking services to individuals, businesses, and institutions in Switzerland. This domestic franchise supplied the balance-sheet and client network expected of a large Swiss universal bank.
Wealth management
Private banking
Private banking served affluent and high-net-worth clients with discretionary and advisory investment services, portfolio administration, financing, and related planning. Cross-border wealth management became one of the institution's most internationally recognizable activities.
Investment management
Asset management
Union Bank of Switzerland managed investments for institutional and private clients through portfolio-management and collective-investment activities. This business formed part of the asset-management capabilities later combined within UBS.
Capital markets
Investment banking and securities
The bank participated in securities trading, brokerage, underwriting, corporate finance, and advisory work. These activities supported corporate and institutional clients and helped the institution compete internationally with other major Swiss and global banks.
Brand decisions
1998
Combine with Swiss Bank Corporation to form UBS AGM&ABackground
Union Bank of Switzerland and Swiss Bank Corporation were major Swiss banks with overlapping domestic and international businesses. The proposed combination responded to the increasing scale and global integration of financial markets.
Action taken
The banks agreed to merge their operations and adopted UBS AG as the name of the resulting financial group.
Aftermath
Union Bank of Switzerland ceased to operate as an independent legal and commercial brand. Its businesses and heritage became part of UBS.
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