Commercial banks have been given the go ahead to invest clients' money overseas. The central bank, the banking regulator and the foreign exchange regulator issued detailed rules governing the capital outflow on Tuesday. "This will widen domestic residents' investment channels in a positive and orderly way, and is a key measure toward helping to balance the international balance of payments," a statement from the People's Bank of China said. Deposits at Chinese financial institutions were said to be US$3.965 trillion by the end of March. Commercial banks will have to obtain approval before investing funds abroad, and will be assigned quotas.