In the process of establishing, businesses need to conduct the declaration of registered business lines as prescribed by law. For ordinary professions, businesses only need to encode the professions according to the encoding system in accordance with the law.
However, for some conditional business lines, in addition to the declaration in accordance with regulations, enterprises have to fully satisfy the prescribed conditions such as legal capital or business licenses (sublicense).
Moreover, enterprises need to pay attention to some lines of business that require sublicense during the business registration process, which includes:
| No | Business line | Name of sublicense | Licensing authority |
| 01 | Travel service business | International travel business license | Vietnam National Administration of Tourism |
| Domestic travel business license | Department of Culture, Sport and Tourism | ||
| 02 | Hotel business | Decision recognizing the star rating for tourism accommodation facilities | Department of Culture, Sport and Tourism |
| 03 | Printing service | Printing operation license | Department of Information and Communication – Department of Publication, Printing and Publishing |
| 04 | Real estate business: lease for foreigner | Certificate of fire safety | Chamber/Department of Fire Protection, Province/City Police |
| Certificate of social security | District Police | ||
| 05 | Security service business | Certificate of social security | City Police (PC 13) |
| 06 | Real estate trading floor | Real estate trading floor operating announcement | Department of Construction |
| 07 | Bottled drinking water production | Certificate of food safety | Department of Health or District Department of Health |
| Certificate of product standard announcement | |||
| 08 | Food production | Certificate of food safety | Department of Health |
| Certificate of product standard | |||
| 09 | Restaurant, eateries and coffee shop business | Certificate of food safety | Department of Health |
| Restaurant business | Fire safety inspection record | District Police | |
| 10 | Informatics/Language Center | Informatics/Language Center Operating License | Department of Education |
| 11 | Veterinary medicament business | Certificates of satisfaction of business condition | City Veterinary Department |
| 12 | Veterinary medicament production | Veterinary medicament production license | Department of Veterinary |
| 13 | Preschool | Preschool Establishment License | Department of Education |