Financial rand Financial rand The South African financial rand was the most visible part of a system of capital controls. Although the financial rand was abolished in March 1995, some capital controls remain in place. These capital controls are locally referred to as "exchange controls", although the system has since 1995 moved towards surveillance — recording and reporting to the authorities of foreign currency transactions — rather than control. Capital controls have been in place in South Africa in various guises on an uninterrupted basis since the outbreak of World War II, when Great Britain and its dominions implemented the Sterling area.
Currency substitution On the other hand, currency substitution leads to the loss of seigniorage revenue, the loss of monetary policy autonomy, and the loss of the exchange rate instruments. Seigniorage revenues are the profits generated when monetary authorities issue currency. When adopting a foreign currency as legal tender, a monetary authority needs to withdraw the domestic currency and give up future seigniorage revenue. The country loses the rights to its autonomous monetary and exchange rate policies, even in times of financial emergency. For example, former chairman of the Federal Reserve Alan Greenspan has stated that the central bank considers the effects of