Russian banks could get a capital boost of up to 1 trillion roubles ($17 billion) under a new law being prepared by the government to support a sector suffering from Western sanctions and an economic slowdown.

The potential capital boost comes after the central bank on Wednesday eased regulation for the financial sector which is reeling from a sharp slide in the rouble, down some 45 per cent against the dollar this year.

Russia's largest state-owned banks, including Sberbank and VTB, are under Western sanctions that restrict their access to international capital markets, driving up their cost of financing and hurting profitability.

The draft law published on the parliament's website would allow for up to 1 trillion roubles to be invested in subordinated loans, bonds and preferential shares of Russian banks with the help of the Deposit Insurance Agency, the retail deposit watchdog.

The draft law did not clarify which banks could benefit, but a similar method of supporting banks was a backup option in the 2008/09 global financial crisis. Interfax news agency said the State Duma, the lower house of parliament, would consider the law on December 19th.

The central bank on Wednesday unveiled a package of measures to support banks, temporarily allowing banks to use a third-quarter exchange rate to value their risk-weighted assets and allowing them not to create loan-loss provisions for credits to companies suffering due to sanctions over Ukraine.

The bank said the measures should stabilise the rouble, whose slide has been accelerated by a sharp fall in oil prices since the summer.

The government has already provided state support this year in the form of additional capital to banks including VTB, as their margins are hurt by higher central bank interest rates and a spike in loan-loss provisions.

Reuters