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The period of temporary stay of a foreign citizen in the Russian Federation is determined by the period of validity of the visa issued, except for the cases provided for by Federal Law No. 115-FZ of July 25, 2002 "On the Legal Status of Foreign Citizens in the Russian Federation" (hereinafter - Federal Law No. 115- FZ).

In accordance with Article 5 of Federal Law No. 115-FZ, the period of temporary stay in the Russian Federation of a foreign citizen who arrives in the Russian Federation  not requiring a visa cannot exceed ninety days in total during each period of one hundred and eighty days. In this case, the continuous period of temporary stay in the Russian Federation of the specified foreign citizen cannot exceed ninety days. When calculating the period of temporary stay of a foreign citizen arriving in the Russian Federation in the case that does not require a visa, it is necessary to take into account the total period of his previous stay and the planned period of stay in the Russian Federation within 180 days. The total duration of the previous and planned periods of stay within 180 days should not exceed 90 days, with the exception of the periods of temporary stay of a foreign citizen in the Russian Federation in connection with the extension of his temporary stay in due course.

By the Decree of the Government of the Russian Federation of December 29, 2018 No. 1744 "On increasing the period of temporary stay in the territory of the Russian Federation of citizens of Ukraine permanently residing in the territories of certain regions of Donetsk and Lugansk regions of Ukraine"  the period of temporary uninterrupted stay on the territory of the Russian Federation for  citizens of Ukraine permanently residing in the territories of certain regions of Donetsk and Lugansk regions, was increased to 180 days from the date of each entry into the territory of the Russian Federation, regardless of the purpose of their entry.

The period of the temporary stay in the Russian Federation may be extended if a foreign citizen has one of the grounds provided for in clauses 2, 3, 5 and 7 of Article 5 of Federal Law No. 115-FZ.

To extend the period of temporary stay in the Russian Federation, a foreign citizen or his / her  host party must submit a grounded application to the migration department of the territorial body of the Ministry of Internal Affairs of Russia at the place of stay.

In accordance with Article 97 of the Treaty on the Eurasian Economic Union of May 29, 2014, the period of temporary stay (residence) of a working citizen from a member state of the Eurasian Economic Union and his / her family members is determined by the duration of the labor or civil contract concluded by the citizen of EAEU with an employer or customer  on the territory of the Russian Federation.

A foreign citizen temporarily staying in the Russian Federation is obliged to leave the Russian Federation upon the expiration of his / her visa or other period of temporary stay established by Federal Law No. 115-FZ or an international treaty of the Russian Federation, except for cases when on the day of expiry of the indicated periods, the period of the visa  validity or  temporary stay was extended.