The presence of contradictory theories and unpredictable empirics calls for this paper to survey the outcome of board traits on financial operation of Nigeria banks. Financial performance of a firm is as important as the firm. Yet, very few studies have examined its impact by the board of directors in Nigeria. Data were obtained and perused using descriptive and inferential figures. Findings show that size of board has significant and constructive bearing on business piece. However, board composition takes undesirable significance. Meetings of board and gender failed to show significance. But, board member nationality and firm size show negative and significant effects. We added by exploring impacts of boards on financial performance. We asked firms to increase the size of the board and engage more independent directors and reduce the number of board diligence and size of the firm. The strong plus impact of board size and firm size on financial operations is an interesting result allowing for additional interrogation of why these behaviours.