What Is Senior Unsecured Debt?

A corporation can borrow money by issuing bonds or getting a bank loan. Both are different forms of debt. “Senior” means that the debt has priority over other types of debt in bankruptcy; “unsecured” means that the debt is not secured by any specific collateral.

Forms of Debt

A bond is a debt obligation sold to investors, usually in $1,000 denominations. A bank loan can be a term loan or a revolving line of credit. Banks either keep their loans on the books or sell them to institutional investors such as fixed-income or pension funds.


If a corporation defaults on its obligations, it can be forced into bankruptcy liquidation, in which case its assets will be sold off to repay the debts. Debts are repaid in a prescribed order of priority. Senior debt comes first; junior or subordinated debt come after it. Think of it as a first and second mortgage: the first mortgage would be senior debt; the second mortgage would be junior, or subordinated, debt.


A mortgage can be secured by a house or other real property. A corporation may pledge specific assets such as buildings, machinery or equipment to secure a bond or a bank loan. Unsecured debt does not have any specific collateral and is backed by a corporation’s credit rating and ability to repay. A corporation may also have several forms of unsecured debt. Some unsecured debt may have priority over other types of unsecured debt – hence “senior unsecured debt.”

Debt Hierarchy

Things can get complicated – that’s why you need bankruptcy lawyers to figure out who gets paid what and when. Senior unsecured debt may have priority over subordinated debt but be subordinated to bank debt or senior secured loans.

Bond Pricing

Investors always demand returns that are commensurate with risk. All else being equal, a senior bond will pay a lower interest rate than a junior or subordinated bond because the former is safer: in bankruptcy, senior debt holders are more likely to get some or all of their money back compared to other types of debt holders. An unsecured debt has higher interest because it is not backed by any specific assets, but its holders may lose more in bankruptcy liquidation.

Selecting Bonds

You can only invest in bank debt through a fund whose holdings are professionally selected and diversified to minimize risks. That leaves you with individual bonds. Using a bond’s credit rating is the best shortcut because it takes into account all relevant aspects such as the issuer’s financial condition and the bond’s seniority and collateral.



About the Author

Based in San Diego, Slav Fedorov started writing for online publications in 2007, specializing in stock trading. He has worked in financial services for more than 20 years, serving as a banker, financial planner and stockbroker. Now working as a professional trader, Fedorov is also the founder of a stock-picking company.