According to VTB, the Tier 1 capital fell from 10.9% at the end of December 2013 to 9.4% in the first half of 2014.
The ministry will use its National Wealth Fund (NWF) funds to make the purchases.
The ministry will buy the shares after VTB, Rosselkhozbank, Bank of Moscow and VTB 24 repay subordinated loans to Vnesheconombank. The loans were given based on the federal laws that stipulated additional measures to support the financial system of the country.
The shares on sale are neither part of any stock index nor traded on the open market.
