Under the circular, individuals, households and business households will continue to be issued tax identification numbers by tax authorities until June 30, 2025. However, starting from July 1, 2025, the 12-digit personal identification number issued by the Ministry of Public Security will officially replace tax identification numbers for all purposes.

Individuals with a 12-digit Citizen Identification Number will use this number as their personal identification code. Citizens can look up their identification code on the VNeID application or at the website dichvucong.dancuquocgia.gov.vn.

For children, the identification code will be displayed in their birth certificate. When accessing the VNeID application, citizens can select the "Residence Information" section to view the identification codes of all members within the same household.