In terms of its practical purpose, this article is of the type of exploratory mixed data (qualitative-quantitative), and in terms of the nature of the research, it is descriptive-survey and based on the time of the research, it is cross-sectional. The community studied in the qualitative section included theoretical foundations and related backgrounds in internal and external databases, as well as academic experts and banking and financial experts. In the quantitative part, the studied population included university professors and bank managers in Iran. The sample size in the qualitative section and content analysis, using the saturation principle and targeted sampling method, included 15 interviewees. In the quantitative part, 210 people were selected by calculating the sample size in structural equations and using the cluster random sampling method. To collect data in the qualitative section, library documents and semi-structured interviews were used. In the quantitative part, a researcher-made questionnaire with 98 items taken from theoretical foundations, research background, interviews with experts and coding was used. In the data analysis section, thematic analysis using Maxqda2020 software was used in the qualitative section, and descriptive and inferential statistics were used in the quantitative section using SPSS-V23 and Lisrel V8.8 software. The results of the research showed that financial corruption has a significant and negative effect on the stability of accepted banks in the Iranian capital market. Also, economic freedom, rules and regulations, and transparency have a positive and significant effect on the stability of accepted banks in Iran's capital market.