The application process is complex, requiring a number of documents involving high costs and strict time limits. The overall cost together with purchasing tickets from a Central Asian country to the Russian Federation makes the initial "investment" in migration very expensive. A patent requires that monthly payments be made, which are considered advance tax payments, the amount of which is determined by each internal region of the Russian Federation. However, citizens of Kyrgyzstan as well as other countries that are members of the Eurasian Economic Union do not need a patent.