According to point c, clause 8 of the Appendix on Invoice Content issued together with Decree 254/2026/ND-CP, it is stipulated:
c) The currency stated on the invoice is Vietnamese Dong, with the national symbol "đ".
c.1) In cases where economic and financial transactions arise in foreign currency as stipulated by the law on foreign exchange, the unit price, total amount, total value-added tax amount for each tax rate, total value-added tax, and total payment amount shall be recorded in foreign currency, with the foreign currency unit indicated by its name. The seller shall also show on the invoice the exchange rate between the foreign currency and the Vietnamese Dong according to the exchange rate stipulated in the Law on Tax Administration and its implementing regulations.;
Therefore, from July 1, 2026, when issuing invoices for transactions in foreign currency, the exchange rate recorded on the invoice will be the exchange rate between the foreign currency and the Vietnamese Dong as stipulated in the Law on Tax Administration and its implementing regulations.
Based on Clauses 3 and 4 of Article 14 of Decree 252/2026/ND-CP guiding the 2025 Law on Tax Administration, the exchange rate is stipulated as follows:
(1) For oil and gas activities and oil and gas sales:
(1.1) The exchange rate for tax declaration and other revenue collection for oil and gas activities and oil and gas sales as stipulated in point b.1.1, clause 1, Article 14 of Decree 252/2026/ND-CP is the actual exchange rate for payment of oil and gas sales transactions;
(1.2) In the case where the Vietnam National Energy and Industry Corporation pays taxes and other revenues in Vietnamese Dong as prescribed by the Government, the tax declaration exchange rate for converting the actual foreign currency received in payment to Vietnamese Dong is the average transfer buying and selling rate of the commercial bank where the taxpayer regularly conducts transactions on the date of tax declaration. In the case where the taxpayer submits supplementary tax declarations according to the provisions of tax management law, the exchange rate in the first tax declaration accepted by the tax authority shall apply;
(1.3) For domestic oil export activities, the value-added tax exchange rate is the transfer selling rate of the commercial bank where the taxpayer receives payment according to the contract at the time of invoice issuance as prescribed by the law on invoices.
(2) For exported and imported goods, the exchange rate for tax calculation shall be implemented in accordance with the provisions of the law on customs.
Based on Clause 5, Article 21 of Decree 08/2015/ND-CP detailing and implementing the Law on Customs regarding customs procedures, inspection, supervision, and control (amended and supplemented by Clause 9, Article 1 of Decree 167/2025/ND-CP), it is stipulated that:
- The exchange rate between the Vietnamese Dong and foreign currencies used to determine the taxable value is the foreign currency buying rate via bank transfer at the head office of the Vietnam Foreign Trade Commercial Bank at the end of the day on the preceding Thursday, or the end-of-day rate of the working day immediately preceding Thursday in case Thursday is a public holiday. This rate is used to determine the taxable exchange rate for customs declarations registered during the week.
- For foreign currencies for which the head office of the Vietnam Foreign Trade Joint Stock Commercial Bank (Vietcombank) does not publish exchange rates, the cross-exchange rate between the Vietnamese Dong and certain foreign currencies published by the State Bank of Vietnam on its website shall be used. For foreign currencies for which no cross-exchange rate has been published, the State Bank of Vietnam shall determine and publish the exchange rate based on a proposal from the Ministry of Finance.
(Vietnam Foreign Trade Commercial Bank, abbreviated name: "Vietcombank")
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