FinTech Glossary

What is a Junk Bond?

A junk bond is a debt security issued by a borrower with a relatively weak credit profile. It is also called a high-yield bond because it offers a higher interest rate than safer bonds to compensate investors for higher default risk.

The word “junk” does not mean the bond has no value. It means the issuer is considered below investment grade or carries a higher probability of delayed payment, restructuring, or default compared with stronger-rated issuers. Such issuers may include financially stressed companies, highly leveraged businesses, companies in cyclical sectors, or firms undergoing turnaround.

For investors, junk bonds can look attractive because the coupon is higher. But the extra yield is not free. It is the market's compensation for taking more credit risk.

How Junk Bonds Work

When a company issues a bond, investors effectively lend money to the company in return for interest and principal repayment. If the company has a strong credit rating, it can borrow at a lower rate. If the company's credit quality is weak, investors demand a higher return.

In market practice, bonds rated below investment grade are generally treated as high-yield or speculative-grade securities. Credit rating agencies assess the issuer's ability to service debt based on factors such as cash flow, leverage, profitability, sector outlook, debt maturity profile, and past repayment behaviour.

A junk bond may be secured or unsecured, listed or unlisted, privately placed or publicly issued. The risk level depends not only on the rating, but also on covenants, collateral, seniority, cash flow visibility, and investor protections.

Example of Junk Bond Risk

Suppose a company with falling revenue and high debt wants to raise funds. A bank loan may be expensive or difficult to obtain, and investment-grade bond investors may not be willing to lend at normal rates. The company may issue a high-yield bond offering a much higher coupon.

An investor buying the bond earns a higher interest rate if the company pays on time. But if the business deteriorates, the bond price can fall sharply and the issuer may default, delay repayment, restructure the debt, or offer a haircut.

This is why junk bonds require deeper analysis than simply comparing coupon rates. The headline yield may look attractive, but the actual return depends on whether the issuer survives and pays.

Why Junk Bonds Matter for Businesses

For companies, junk bonds can provide access to capital when traditional borrowing options are limited. They may be used for refinancing, acquisitions, turnaround funding, or liquidity support. However, they usually come with higher interest cost and greater market scrutiny.

For treasury teams and investors, junk bonds should be evaluated carefully across:

• Credit rating and outlook

• Debt-to-EBITDA and interest coverage

• Cash flow stability

• Security cover and seniority

• Covenant protection

• Sector risk

• Default and recovery probability

The key point is simple: a higher coupon should never be read as a better investment by itself. It is usually a sign that the market is pricing higher risk.