site.btaCentral Bank Reduces Base Interest Rate for October to 1.81%

As of October 1, 2025, the base interest rate (simple per annum interest) in Bulgaria will drop to 1.81%, the Bulgarian National Bank said here on Tuesday. It is 0.01 percentage points down from the previous month.

The base interest rate has gone down for the thirteenth month in a row. 

The base interest rate in Bulgaria, which is used in the calculation of the annual interest rate on debts, remained at zero for many years, but at the end of September 2022, a series of increases began. The peak in the increase was 3.80%, reached in late 2023 and repeated in March of 2024.