- Argenta – A banking and insurance group operating in Belgium, Netherlands and Luxembourg. Today it is the fifth largest banking institution in Belgium. The company was established in 1956 and is headquartered in Antwerp.
- AXA Bank Europe (formerly known as AXA Bank Belgium) is AXA Group’s banking arm that provides retail banking solutions to individuals and small companies in Europe. The company provides its services through a network of 950 independent bank agents in Belgium, Germany, France the Czech Republic, Hungary, and Switzerland. AXA Bank Europe is located in Brussels.
- Banca Monte Paschi Belgio – The only bank of Italian origin operating under Belgian law in Belgium. It is part of the Monte dei Paschi di Siena group which was established in 1472.
- Bank van De Post/Banque de La Poste – A joint venture of bpost and BNP Paribas Fortis, markets a range of banking and insurance products.
- BNP Paribas Fortis – The commercial name of Fortis Bank NV/SA, an international bank with its focus in Belgium since the purchase of 75% of the shares by BNP Paribas. BNP Paribas Fortis is number one in deposits and number two in consumer lending in Belgium. The shareholders of Fortis Bank NV/SA are BNP Paribas (74.93% of the share capital), the Belgian state (25% through SFPI/FPIM) and the public (0.07%).
- Dexia – A Belgian-French financial institution. The Bank offers a broad range of retail, commercial and private banking services as well as insurance products to over six million customers. Dexia operates in Europe, Asia, and the United States.
- Europabank – A Belgian bank, founded in 1965 by the American holding company "International Bank of Washington." In 2004, it was acquired by Credit Agricole. Europabank is located in Gent.
- ING Belgium (formerly Banque Bruxelles Lambert (BBL)) – The fourth-largest commercial bank in Belgium. In Belgium, ING has two banking networks: ING Belgium, a universal bank, and Record Bank, a retail bank which is a subsidiary of ING Belgium.
- Keytrade Bank – The leader in online trading in Belgium. Keytrade Bank offers all banking and trading services online. Today, Keytrade Bank is part of the Credit Agricole Group.
- KBC Bank – A Belgian universal bank, focusing on private clients and small and medium-sized enterprises. It concentrates on its home markets of Belgium and certain countries in Central and Eastern Europe: Czech Republic, Slovakia, Hungary, Poland and Bulgaria. As of December 31, 2010, KBC had total assets of EUR 320.82 billion and assets under management of EUR 208.81 billion.
- Landbouwkrediet/Credit Agricole – A Belgian cooperative bank specialised in the financing of the agricultural sector. The bank also offers home loans and savings. It serves over 430,000 customers through a network of 280 branches. In recent years, it acquired Europabank and Keytrade Bank. The bank was established in 1937 and is headquartered in Brussels.
- National Bank of Belgium (NBB) – The central bank of Belgium established on 5 May 1850. It is a member of the European System of Central Banks. 50% of the NBB stock is freely traded on Euronext Brussels, the other 50% of the shares are owned by the Belgian government.
- Rabobank Belgium – Since 1984 Rabobank’s Antwerp Branch forms an integral part of an extensive global network of Rabobank International. The Antwerp branch offers corporate banking and leasing services. Through the internetbank, Rabobank.be, Rabobank also provides financial services to the Belgian retail market, with products like saving accounts, term deposits and investment funds.
- Unico Banking Group – A group of 8 banks that have a cooperative background. The Group includes Crédit Agricole, DZ BANK, Rabobank, ICCREA Holding, Pohjola Bank, and Raiffeisen Bank International. Banco Cooperativo Espanol and Raiffeisen Schweiz are associate members. Unico is headquartered in Brussels, Belgium
The Belgian banking sector is now dominated by four large banking groups: Fortis Bank, Dexia, KBC and ING Bank Belgium. All the major players are now joined-stock companies. The Belgian banking system used to have significant players under the co-operative status (the Bacob group and the Cera group), but the merger of both into larger organisations was followed by the disappearance of the co-operative structures. The Bacob group became a part of Dexia. Cera is now part of KBC.