The General Department of Taxation has recently issued Official Letter No. 339 introducing some new points of Circular No. 86/2024/TT-BTC regulating tax registration.

Notably, in cases where an individual is issued more than one tax identification number, the taxpayer must update the personal identification number information for all issued tax identification numbers so that the tax authorities can integrate the tax identification numbers into the personal identification number, consolidating the taxpayer's tax data according to the personal identification number.

Once the tax identification number has been integrated into the personal identification number, invoices, documents, tax records, and other legally valid papers that have been created using the individual's tax identification number can continue to be used to carry out administrative tax procedures and prove the fulfillment of tax obligations without having to adjust the tax identification number information on invoices, documents, and tax records to the personal identification number.