Capital reform in Nigerian banks was studied from 2007-2011 using financial ratios. The banks' performance varied over time, with most having a net interest margin below 5%. Only a few banks had a return on capital employed and return on assets above 10% and 1%, respectively. Asset growth rates ranged from 4-33%, with only some banks growing their assets by more than 10%. Surprisingly, the study found that the size of the banks did not impact their performance.