KIEV, Aug. 20 – The National Bank of Ukraine is toughening foreign currency purchase rules with the introduction of a requirement to service one economic agreement in one bank.

The decision is stipulated in NBU resolution No. 308, which will take effect from the moment of its publication on August 23, 2012.

"Clients of banks (companies and individuals-businessmen) will buy, exchange foreign currency to carry out payments in transactions via one market player for each foreign economic agreement signed with a nonresident. Residents have the right to transfer the foreign economic agreement to the servicing to another market player. The synchronous servicing of the foreign economic agreement in several banks is not foreseen," the NBU said in a letter to banks.