Capital controls are residency-based measures such as transaction taxes, other limits, or outright prohibitions that a nation's government can use to regulate flows from capital markets into and out of the country's capital account. These measures may be economy-wide, sector-specific, or industry specific. They may apply to all flows, or may differentiate by type or duration of the flow.
A widespread system of capital controls were decided upon at the international 1944 conference at Bretton Woods.
The International Finance Centre in Hong Kong would likely oppose capital controls, and argue that they would not work.
Foreign exchange controls
Foreign exchange controls are various forms of controls imposed by a government on the purchase/sale of foreign currencies by residents, on the purchase/sale of local currency by nonresidents, or the transfers of any currency across national borders. These controls allow countries to better manage their economies by controlling the inflow and outflow of currency, which may otherwise create exchange rate volatility. Countries with weak and/or developing economies generally use foreign exchange controls to limit speculation against their currencies. They may also introduce capital controls, which limit foreign investment in the country.
Four exchange control stamps in a South African passport from the mid-1980s allowing the passport holder to take a particular amount of currency out of the country. Exchange controls such as these were imposed by the apartheid-era South African government to restrict the outflow of capital from the country
