Evaluating the distance to default of banks: banks admitted to the stock exchange

The purpose of this research is to calculate the distance to default of 14 banks admitted to the Tehran Stock Exchange and active in the banking industry of the Islamic Republic of Iran, based on the option pricing method of Merton, Black-Scholes, using the calculation of the market value of the banks' assets and their risk in the period The time is 1392-1400. For this purpose, the average market value of assets, liabilities and asset risk of banks and the distance to their default are calculated and compared.The index of distance to default of each of these banks in this period depends on the market value of assets, risk of assets, risk-free interest rate and debt. These variables depend on economic and non-economic and managerial factors. Bank Ansar, with the lowest average market value of assets, has the shortest distance to its default. On the other hand, Bank Mellat, which has the highest average market value of assets, has the longest distance to default. As a result, the most bank assets will have a longer distance to default.