The problem with which this study is concerned is that of the income concepts used by bank loan officers in dealing with financial information, as compared to the income concepts used by the accounting profession. A series of twenty different financial situations were designed which required the loan officer to make a decision as to an income concept before he could compute the answer to the questions in income, profit, gain, and change in wealth which were asked for in each situation. The loan officers' answers to each situation were then compared with the accountants' answers, using generally accepted accounting principles. In addition, comparisons were made between the income concepts used by the different classes of loan officers and sixteen environmental factors to determine what influence, if any, these factors might have on the answer given by the bank loan officers. The two purposes of the study were to show that bank loan officers do not calculate net income by the same methods as accountants, and to determine if there are environmental factors which would influence the method the loan officer used to compute his answers.