A residence permit in Latvia (Uzturēšanās atļauja in Latvian) is a document (ultimately a physical residence card), which provides a foreigner with the right to reside (live, work, study or do business) in the Republic of Latvia for a definite or indefinite period depending upon the type of permit issued.

A residence permit makes your life much easier if you want to spend longer than 90 days in Latvia as well as making your travel to other Schengen countries (members of the Schengen Area) easier, since any person holding a residence permit in one Schengen country does not require any further visas or documentation to visit another Schengen state for the purposes of business or tourism.

Residence permit in Latvia, Jun 12 2021 on redhotbelgian.com