The study examined the impact of foreign trade financing on per capita gross domestic product in Nigeria spanning from 1981 to 2022. The study makes use of secondary data (time series) from various sources which include; the Central Bank of Nigeria Statistical Bulletin and Annual Report (various issues), and World Development Indicators. Variables used for the study include Deposit Money Banks’ Credit to Export Trade, Deposit Money Banks’ Credit to Import Trade, Nigeria Export and Import Credit, Letter of Credit, and Exchange Rate as explanatory variables, while per Capita Gross Domestic Product serves as the dependent variable. The Eview10.5 Software was used to empirically and econometrically analyze data and ARDL was used as method of estimation. The findings from the result showed that NEXIMC bank credit has a positive effect on gross domestic product in the short run and a negative effect in the long run, an increase in export trade credit has a positive effect on per capita gross domestic product, deposit money banks credit to import trade has a positive effect on per capita gross domestic product, issuance of the letter of credit hurts per capita gross domestic product, an appreciation of the exchange rate hurt per capita gross domestic product. The study concludes that international trade financing using deposit money bank loans negatively affected per capita gross domestic product in Nigeria. The study therefore recommends that import trade should be more on capital-intensive goods where Nigeria has a disadvantage in either production or expertise, credit to the private sector should be channelled into the production of capital goods and services which will attract more foreign exchange into the country and before the adoption of the import substitution policy, efforts should be made to promote or improve the quality of education in Nigeria.