Fixed Income Securities

What Is a Fixed Income Security?

A fixed income security is an investment that generally pays regular interest or income to investors and returns principal at maturity or according to the terms of the instrument. These securities are most commonly associated with bonds, notes, and similar debt investments.

They are called “fixed income” because many of them pay predictable cash flows, though not all fixed income investments guarantee the same payment amount under all conditions.

Why It Matters

Fixed income securities are often used to provide stability, income, and diversification within an investment portfolio. They may help reduce overall portfolio volatility compared with equities and are commonly used by retirees and conservative investors seeking reliable cash flow.

They also play an important role in balancing risk in long-term investment strategies.

How Fixed Income Securities Work

When investors buy fixed income securities, they are typically lending money to a government, corporation, or other issuer.

In return, the issuer agrees to provide:

periodic interest payments
return of principal at maturity
defined terms and repayment structure

Examples include:

government bonds
corporate bonds
municipal bonds
Treasury notes
certificates of deposit in some contexts

Example

An investor buys a corporate bond with a face value of $1,000 and a 5% coupon rate. The investor receives regular interest payments and expects the principal back at maturity, assuming the issuer does not default.