Abstract
This study investigated the effect of electronic accounting system on performance of deposit money banks in Nigeria, with its specific objectives being to determine how automated teller machine (ATM) transactions and point of sale (POS) transactions affect return on equity and return on capital employed of deposit money banks listed on the Nigerian Exchange Group. In carrying out this study, the research design adopted was the ex-post facto research design while the ordinary least square (OLS) method with the aid of special package for social science (SPSS) was used to test the research hypotheses formulated. Data were extracted from audited annual reports of eighteen selected deposit money banks (out of the nineteen deposit money banks with both international and national authorization) listed on the Nigerian Exchange Group for five years, 2020-2024. Findings of this study indicated that the independent variable (measured by POS and ATM transactions) both have a statistically significant and positive effect on the dependent variables (proxy by ROE and ROCE), thereby enabling the researcher to draw a conclusion that there is a positive effect of electronic accounting system on performance of deposit money banks in Nigeria. on the strength of the conclusion, it was recommended that, among others, deposit money banks should be encouraged to improve and expand their transaction processing application areas (which include ATM and POS) so as to further increase their performance.