Simple definition
Default risk is the chance that a bond issuer — the borrower — fails to make its interest payments or repay the loan as promised. It's higher for lower-rated issuers, whose bonds pay more to compensate. Think of it like lending to a friend: a shaky borrower might not pay you back, so you'd want a better deal.
Why it matters
Default risk is why two bonds can pay very different interest rates: the riskier the issuer, the higher the yield needed to attract buyers. Credit ratings exist to help you gauge it. Lower-rated, high-yield bonds tempt with big payments, but a default can wipe out that extra income and part of your principal.
Real-life example
Picture a top-rated bond paying 4% and a low-rated one paying 9%. That extra 5 points is the market pricing in a greater chance the second issuer misses payments. If it defaults, you could lose future interest and some principal. These are rounded, hypothetical figures to show the trade-off, not real bonds.
Common mistakes
- Chasing a high yield without asking why the issuer has to pay so much.
- Assuming a bond is safe from default just because it hasn't missed a payment yet.
- Ignoring credit ratings, which are built to signal default risk.
- Concentrating in one issuer's bonds, so a single default hits hard.
Pro tips
- Check an issuer's credit rating to gauge how likely it is to repay.
- Treat an unusually high yield as a signal of higher default risk, not a bargain.
- Diversify across many issuers, often through a fund, to soften any single default.
- Reserve lower-rated bonds for a small slice of a portfolio you can afford to risk.
Related Money Dictionary terms
- Credit RatingA grade from rating agencies that signals how likely a bond issuer is to repay its debt.
- Junk BondA bond from a lower-rated issuer that pays higher interest to make up for a greater chance of default.
- Corporate BondA loan you make to a company that pays interest and generally offers higher yields but more risk than government bonds.
- BondA loan you make to a government or company that pays you interest and returns your money on a set date.
- Investment GradeA quality tier for bonds from issuers considered financially strong and likely to repay their debt.
- YieldThe income an investment pays you each year, shown as a percentage of its current price.
Frequently asked questions
How can I judge a bond's default risk?
Credit ratings from agencies are the common starting point. Higher-rated, investment-grade bonds are judged relatively unlikely to default, while lower-rated, high-yield or junk bonds carry more risk and pay more to compensate. Ratings aren't perfect and can change, but they give a useful, standardized read on how likely an issuer is to repay.
Which bonds have the lowest default risk?
Bonds from financially strong issuers generally carry the least default risk. U.S. Treasuries are widely viewed as among the safest because they're backed by the federal government. Highly rated corporate and government bonds come next. As ratings drop toward junk territory, default risk — and the yield offered to offset it — rises.
What actually happens if a bond issuer defaults?
A default means the issuer misses interest payments or can't repay the principal as promised. You might recover part of your money through a restructuring or bankruptcy process, but often less than the full amount, and it can take time. That's why default risk matters: it threatens both your income and your original investment.
Knowing what Default Risk means is knowledge — the first half. A brick gets placed when you act on it: look up the credit rating of a bond or bond fund you own to see how much default risk it carries.
Sources & references
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Plain-English education — not personalized legal, tax, or investment advice.