In this study, we investigate the relationship between CEO tenure and cost of debt. Using a sample of the FTSE All-Share Index firms listed on the London Stock Exchange for the period 2009 to 2018 and the ordinary least squares regression (OLS) estimation method, we find that cost of debt is higher for firms with CEOs in their early tenure in office than those in their later tenure in office. Further analysis shows that board independence attributes including (1) the proportion of independent directors on the board, (2) full (100 per cent) independent audit committee members, and (3) a lead independent director representation on the board interact with CEO early tenure in office to reduce cost of debt due to the board’s effective monitoring...