Which type of bond involves a sinking fund—a pool of money set aside as collateral?

Which type of bond involves a sinking fund—a pool of money set aside as collateral?

• A. Sinking Fund bonds
• B. Mortgage bonds
• C. Debentures
• D. Equipment Trust Certificates

Answer: (A)

The main concept is that a sinking fund creates a dedicated reserve to retire debt over time. A sinking fund is a pool of money set aside and held by a trustee, funded by the issuer, to systematically repay part of the bond issue before or at maturity. This mechanism reduces credit risk for investors because principal is being paid down gradually rather than all at once at the end. The money in the fund is typically invested conservatively until it's used to buy back bonds in the open market or to redeem specific maturities as scheduled. So a bond issue that incorporates a sinking fund explicitly builds this retirement path into its structure, making it the option that best fits the description. By contrast, mortgage bonds are secured by real estate, debentures are unsecured, and equipment trust certificates are secured by specific equipment rather than a dedicated retirement reserve.

The main concept is that a sinking fund creates a dedicated reserve to retire debt over time. A sinking fund is a pool of money set aside and held by a trustee, funded by the issuer, to systematically repay part of the bond issue before or at maturity. This mechanism reduces credit risk for investors because principal is being paid down gradually rather than all at once at the end. The money in the fund is typically invested conservatively until it's used to buy back bonds in the open market or to redeem specific maturities as scheduled. So a bond issue that incorporates a sinking fund explicitly builds this retirement path into its structure, making it the option that best fits the description. By contrast, mortgage bonds are secured by real estate, debentures are unsecured, and equipment trust certificates are secured by specific equipment rather than a dedicated retirement reserve.