Why does the Turkish Banks hold gold at Turkish Central Bank and how they do it?

Borsa Istanbul (name of exchange in Turkey), announced in late 2016 that they are moving towards opening a new precious metals vault early 2017 with a capacity to store 1600 tonnes of gold and other precious metals. While stating they want to attract the countries in the region to store their gold in the Borsa Istanbul Vault, Central Bank of Turkey is also working towards contributing to the capacity usage of the vault with the changes it is making on gold reserve requirements since 2011. Its latest change on 24th February , allows the banks to keep kilo bars in Borsa Istanbul in addition to good delivery bars for their reserve requirement needs. Earlier in 2015, Central bank of Turkey also updated the annual storage costs of Borsa Istanbul as 12 basis points, almost half of Bank Of England ( 20 basis points) making it a less costly option.

The Central Bank had been increasing its gold reserve through gold reserve requirement facility since 2011 as part of its monetary policy. Turkish commercial banks are required to hold a portion of their Turkish lira and foreign currency liabilities at a blocked account in the Central Bank as ‘reserve requirement'. In 2011 it allowed banks to hold up to %10 of these Turkish lira reserve requirements in physical gold, in the form of good delivery bars at its account in Bank of England. Since then, the ratio increased to %30 as well as the coefficient of every gold facility ratio. As in September 2016, an additional %5 ratio is introduced to accept scrap gold as well.

The intention of the Central bank allowing banks to hold gold instead of Turkish lira is to increase the turkish lira liquidity in the banking system, so the banks can use this excess Turkish lira for lending purposes that they don’t need to keep anymore in the blocked accounts of Central banks. This is a way of easing for the Central bank. In perspective of the bank holding gold instead of the Turkish lira is more profitable because of the wide interest rate difference of gold and Turkish Lira. Central Bank data is showing that by 13th of january, banks hold %24 of the %30 maximum allowance as bars and %0.20 of the %5 as scrap gold instead of Turkish lira reserve.

Why does the Turkish Banks hold gold at Turkish Central Bank and how they do it?