* Limited to the taxation of air and sea transport in international transport. For foreign investors, it is therefore worth knowing the existing double taxation (DBA) conventions between Vietnam and different countries, as well as the application of these agreements. These agreements effectively eliminate double taxation by identifying exemptions or reducing the amount of taxes payable in Vietnam. Turkey and Singapore ratified a bilateral free trade agreement (FTA) on 21st August. This agreement covers a lot of. Hong Kong and Saudi Arabia have reached an agreement to avoid double taxation and prevent tax taxation. On 10 March 2017, the Government of Singapore signed an OECD-modeled tax information exchange agreement. On April 3, the Hong Kong government announced the recent agreement on the automatic exchange of financial accounts.