Bank Characteristics, Central Bank Rate and Profitability of Tier Three Commercial Banks in Kenya

Kenya's tier three commercial banks have experienced declining profitability, with the Central Bank of Kenya reporting slowed profit growth in 2023 due to rising operational costs and increasing non-performing loans that constrain profit margins. Thus, this study examined the effects of market share, asset quality, and capital adequacy on the profitability of Kenyan tier three commercial banks, with central bank rates as a moderating variable. The research employed a descriptive design using secondary data from audited financial reports spanning 2015-2024, applying panel data methodology with multiple regression and diagnostic tests to analyze relationships between variables and profitability. Findings showed that profitability in Kenya's tier three banks was positively shaped by market share, asset quality, and capital adequacy. Stronger market positions boosted earnings, sound assets reduced default rates, and robust capital improved financial stability. While market share and asset quality also reinforced one another, capital adequacy appeared less connected to loan quality, suggesting different underlying drivers. The central bank rate had a weaker and less consistent influence, though modest increases could enhance profitability through interest margins; however, its overall direct effect in the panel model was negative, indicating that higher rates generally dampen returns. When monetary policy context was considered, the explanatory power of the model improved, with larger banks and well-capitalized institutions showing greater ability to withstand tighter policy conditions. Asset quality's interaction with monetary policy was not significant, but it still trended positively, hinting at potential benefits under certain conditions. The study concludes that profitability in Kenya's tier three banks is shaped by the combination of internal elements—capital strength, asset quality, and market share—and external forces like central bank rates. The study recommends that banks should prioritize market share expansion through strategic diversification and digital transformation while strengthening asset quality management through robust credit appraisal systems and comprehensive risk frameworks. The study recommends that tier three banks should develop comprehensive capital management strategies beyond regulatory compliance and establish sophisticated monitoring systems for macroeconomic indicators, particularly Central Bank Rate movements. The study recommends that banks should strengthen governance structures through independent board composition, empowered risk committees, and transparent leadership practices to ensure regulatory compliance and build stakeholder confidence. Keywords: Bank Characteristics, Central Bank Rate, Profitability, Tier Three Commercial Banks, Kenya