In Kenya, interest rates decisions are taken by The Monetary Policy Committee (MPC) of the The Central Bank of Kenya. The official interest rate since August 2005 is the Central Bank Rate (CBR), which replaced the 91-day Treasury Bill (TB) rate.
Last month Kenya interest rate was 12%, and the month before that it amounted to 12.75%.
Interest rate is the proportion of a loan that is charged as interest to the borrower, typically an annual percentage of the loan outstanding. When it comes to the national level, interest rate is a rate at which banks borrow money from a country's central bank.
Yes, negative interest rate can be used by the government as a monetary policy tool to stimulate economy growth.
Growing or falling interest rate can influence the country's economy, stimulate it or lower the inflation level. Even people can feel the effect of interest rate's movements — for example, if interest rate increases, loans get more expensive.