In finance, senior debt, frequently issued in the form of senior notes or referred to as senior loans, is debt that takes priority over other unsecured or otherwise more "junior" debt owed by the issuer. Senior debt has greater seniority in the issuer's capital structure than subordinated debt. In the event the issuer goes bankrupt, senior debt theoretically must be repaid before other creditors receive any payment. It is a class of corporate debt that has priority with respect to interest and principal over other classes of debt and over all classes of equity by the same issuer.