it was a part of the Latin Monetary Union since 1985 until 1925.  After independence, Belgium introduced the Belgian Franc (BEF) at par with French Franc.

Germany conquered Belgium during World War I, and the Belgians hid the banknote plates with them and Germany had to issue banknotes via the Societe Generale de Belgique bank.

The Belga (BEB) was issued on December 26, 1925 and it was equal to 5 Francs. Belgium officially stopped following the Gold Standard on May 10, 1940.

Since World War II, the Germans put 1 Belga being equal to 0.5 Reichsmarks and from May 1940 through July 1940 it was Reichsmarks afterwards. Post World War II Belgium stopped using the Belga in December 1945 and reconsidered the Franc as their currency. The Banque National de Belgique printed currency notes from 1850 until 2002.

The ISO provided with special symbols for convertible BEC and financial BEL Belgian Francs. Belgium adopted on May 10, 1940 and did not completely abolish them until March 5, 1990.
 
Belgium switched to using the Euro as its currency on January 1, 1999 where 1 Euro was equal to 40.3399 Francs.

Euro currency notes, put by the European Central Bank, was put to circulating in Belgium on January 1, 2002, and Belgian Francs stopped to be the legal tender on February 28, 2002.