What Is a Corporate Bond?

A diverse portfolio is one that contains a variety of assets, including stocks and bonds. While bonds aren't necessarily the most lucrative investment out there, what they lack in higher returns, they make up for in stability.

The bond market is actually made up of different types of bonds. There are Treasury bonds issued by the U.S. government, municipal bonds issued by states, cities, and counties, and corporate bonds issued by -- you guessed it -- corporations looking to raise capital. Here, we'll take a deep dive into corporate bonds to help you determine whether they're right for you. We'll review key terms you need to know, like maturity dates, interest rates, and credit ratings, so that you understand how corporate bonds work. We'll also show you how to evaluate bonds on a case-by-case basis and develop an investment strategy around them.

The word bonds in blue electronic block letters next to a green arrow pointing upward
The word bonds in blue electronic block letters next to a green arrow pointing upward

IMAGE SOURCE: GETTY IMAGES.

How do corporate bonds work?

A bond is a debt instrument issued by an entity to raise money. In the case of a corporate bond, the entity in question is a corporation looking to raise capital for a host of reasons, whether to expand, upgrade equipment, or invest in research and development.

The best way to think about corporate bonds from an investor standpoint is to liken them to an I.O.U. When you buy bonds, you're essentially lending money to a company for a predetermined period of time, known as a bond's term. That period might be two years, five years, or 10 years, depending on the company's needs. The company, in turn, agrees to pay you a specific amount of interest on that loan, and then repay your initial investment, or principal, once your bond matures, or comes due, at the end of its term.

For example, you might buy a 10-year, $20,000 bond paying 3% interest. The company that issues that bond will, in turn, promise to pay you interest on that $20,000 every six months, and then return your $20,000 after 10 years.

Why are corporate bond payments made semiannually? Back in the day, bondholders actually had to submit the physical coupons attached to their original bond certificates in order to collect the interest payments that were due to them. Going through that process on a monthly basis would be burdensome, but waiting a full year would result in a long lag between collecting interest payments. Hence, semiannual payments seemed to make sense then, and the tradition has since continued even though the payment of interest has since been digitized.

However, this example is a basic representation of how corporate bonds work. Usually, when you buy corporate bonds, you'll lock in a fixed rate, and you'll collect the same interest payment annually (known as a coupon payment) until your bond matures. However, some bonds work differently.