1. Law on entry, exit, transit and residence of foreigners in Vietnam 2014
2. Circular No. 31/2015/TT-BCA guiding for issuance of visas, temporary residence cards, entry/exit permits and permanent residence status for foreigners in Vietnam
3. Circular No. 04/2015/TT-BCA on specimen papers concerning foreigners entering, leaving, and residing in Vietnam
4. Circular No. 219/2016/TT-BTC on licensing fees on entry, exit, transit and residence of foreigners in Vietnam

Step 1: Prepare the following documents

For those who are granted visa symbolized as NG1, NG2 and NG4, they must prepare the following documents

1. A diplomatic note or written request for extension of temporary residence permit which specifies full name, date of birth, nationality, gender, passport number and symbol, date of issue and expiry date of passport, occupation and position, purpose of entry and extended duration and request for a new visa (if any).
2. A foreigner’s passport that is valid for more than 30 days from the date of application of extension
3. An application form for visa and extension of temporary residence permit, countersigned and sealed by the guaranteeing entity.
4. 01 photo of ID of members of the  diplomatic mission of the foreigner’s country in Vietnam issued by the Directorate of State Protocol or Department of Foreign Affairs of Ho Chi Minh in case the foreigner comes to Vietnam for visiting members of  diplomatic missions of his/her country in Vietnam.
5. 01 copy of the valid employment contract if the foreigner is a contractual staff working for the diplomatic mission of his/her country in Vietnam.

For those who are granted other types of visa, they must prepare the following documents

1. Written request for extension of the temporary residence status
2. A passport or laissez-passer of the

Step 2: Submit the file

The inviting entity shall directly send the written request for extension of the temporary residence status enclosed with a passport or laissez-passer of the foreigner to the competent authority of the Ministry of Foreign Affairs or at the immigration authority

Step 3: Get results

Within 05 working days from the receipt of sufficient documents, the immigration authority or the competent authority of the Ministry of Foreign Affairs shall consider extending temporary residence status.