Administration of exchange controls has been delegated to the Central Bank. Under new foreign exchange regulations, all banks may deal in foreign currencies. In 1990, Turkey eliminated its requirement for deposits on imports. Payments for imports may be made against letters of credit, documents and goods, or by way of acceptance credits. Foreign exchange controls have been abolished.
All commercial imports require customs clearance certificates.
Products currently prohibited include weapons, narcotics and certain coins. Imports of these goods are allowed only with a special permit from the authorities. Turkey's tariff is based on the Harmonised System. Turkey allows foreign banks and financial institutions to operate offshore activities in these zones. Samples of no commercial value are admitted duty free.