Russia's government is amending regulations covering lease subsidies to carriers operating specific sizes of regional aircraft.
The government says the changes are intended to create "favourable conditions" for airlines to renew their fleets and encourage the acquisition of more-efficient types.
It states that support will be given for all aircraft up to 50 seats, and turboprops up to 78 seats, as well as Russian-registered jets with 75-103 seats.
Several operators in the Siberian and eastern parts of Russia need regional aircraft to cover the large distances between cities.
It says there is demand, in this area, for 80 jets over the period to 2020 - types which include the locally-built Sukhoi Superjet 100 and Antonov An-148.