the new BR, which came into effect on January 2, 2015,interest rates are determined by the banks’ benchmark cost of funds and Statutory Reserve Requirement (SRR). Other components of loan pricing such as borrower credit risk, liquidity risk premium, operating costs and profit margin will be reflected in a spread in the new BR framework.
Why the change?
Instead of a fixed rate under BLR, BR is determined by banks without intervention by the central bank, and should differ from bank to bank depending on their own efficiencies in lending.

https://www.imoney.my/articles/all-about-th...-base-rate-work

what lower rate they gives you now may be changed 2 yrs down the road while others may not have change.....