In 1914, Norway was part of the Scandinavian Monetary Union (SMU), established in 1873 with Denmark and joined by Sweden in 1875. This union created a fixed exchange rate and free circulation of each member's gold-backed coins across all three countries, effectively creating a common currency area. The Norwegian krone, introduced in 1875 to replace the speciedaler, was defined as 1/2480 of a kilogram of pure gold, providing it with solidity and international credibility on the eve of World War I.
The outbreak of war in August 1914 triggered an immediate financial crisis. Fearing instability and a drain on gold reserves, Norway, like its neighbours, swiftly suspended the gold standard on August 4th. This decisive action was taken to halt the export of gold, protect the central bank's reserves, and allow greater control over the money supply and interest rates to manage the economic shock. The suspension also effectively ended the practical functioning of the Scandinavian Monetary Union, as the free convertibility and fixed parity that underpinned it were abandoned.
Consequently, Norway entered the war period with a currency that was no longer convertible to gold. The government and Norges Bank faced the challenging task of financing wartime imports and maintaining economic stability without the automatic discipline of the gold standard. This set the stage for a period of inflationary pressure, increased state intervention in the economy, and a definitive move towards a managed national currency, ending the era of international monetary union that had characterized the pre-war krone.