Credit Risk Definition: Credit risk is the risk that a borrower, bond issuer or other debtor fails to make interest or principal payments in full and on time. Lenders measure it by combining three numbers: the probability of default, the share of the debt lost if default happens, and the amount outstanding at that moment. Investors are paid to carry credit risk through a credit spread, the extra yield a risky borrower pays over a borrower treated as safe.
What Is Credit Risk?
Lending money means trusting that you will get it back. Credit risk is the chance that you won’t, or that you will get back less than promised, later than promised. It is the oldest risk in finance, older than stock markets or currency trading.
Anyone who is owed money carries it. A bank carries credit risk on every mortgage and business loan. An investor who buys a corporate or government bond carries credit risk on the issuer. Even a depositor carries a little credit risk on the bank holding the deposit, above whatever amount a deposit guarantee covers.
Default is the extreme outcome, but it is not the only one. A borrower can miss a payment and catch up later, pay in full but only after a restructuring, or never miss a payment at all while the market grows nervous about its finances. Each outcome costs the lender something, and the last one matters most for anyone who trades debt rather than holding it to maturity.
How Does Credit Risk Work?
Lenders turn credit risk into a number with a simple formula: expected loss equals probability of default (PD) times loss given default (LGD) times exposure at default (EAD). A bank that lends $1 million to a company with a 2% chance of default in a year, and expects to lose 60% of the loan if it defaults after selling any collateral, faces an expected loss of $12,000. That figure feeds directly into the interest rate the bank charges.
Bond markets express the same idea through yields. Suppose a 10-year US Treasury yields 4% and a company with a BBB rating issues a 10-year bond yielding 5.5%. The 1.5-percentage-point difference, or 150 basis points, is the credit spread. It pays you for the chance that the company fails and the Treasury does not.
Here is how credit risk moves a price before any default. You buy $10,000 of that corporate bond at face value. Six months later the company reports falling profits, and a rating agency cuts it to BB, below investment grade. Some funds are only allowed to hold investment-grade debt, so they must sell, and the spread jumps from 150 to 350 basis points.
With roughly nine years left, the bond’s price sensitivity (its duration) is about 7. A 2-point rise in yield therefore cuts the price by about 14%, so your $10,000 position is now worth close to $8,600. The company has not missed a single coupon. You lost money purely because the market repriced its credit risk.
Rating agencies such as S&P, Moody’s and Fitch sort borrowers into grades from AAA down to D. Anything rated BBB- or higher at S&P and Fitch, or Baa3 at Moody’s, counts as investment grade; everything below is high-yield or “junk.” Ratings are opinions, and they can lag the market, which is why traders watch spreads and credit default swap prices alongside them.
Credit Risk vs. Interest Rate Risk
Both risks move bond prices, which is why they get confused. Interest rate risk comes from changes in the general level of rates. When the central bank raises rates, all existing bonds fall in price, including the safest government debt. Credit risk is specific to the borrower: it changes when one issuer’s finances weaken or improve.
| Credit Risk | Interest Rate Risk | |
|---|---|---|
| Source | The borrower’s ability to repay | Market-wide changes in interest rates |
| Affects | One issuer or sector | All fixed-rate bonds |
| Shows up in | Credit spread, ratings, default rates | Government bond yields |
| Worst case | Default and partial or total loss of principal | Price decline; principal still repaid at maturity |
Why Is Credit Risk Important for Traders?
Credit risk rises and falls with the economy, which makes it a signal as well as a cost. Spreads tend to widen before and during a recession, because falling revenue makes debt harder to service. When high-yield spreads blow out, equity markets and risk assets usually come under pressure too, so bond desks and stock traders watch the same numbers.
Defaults also tend to arrive in clusters rather than one at a time. In March 2012, private holders of Greek government bonds accepted a write-down of about 53.5% of face value, the largest sovereign debt restructuring on record at the time. Investors who had treated euro-area government debt as nearly riskless learned that membership in a currency union did not remove credit risk.
Recovery is the part many investors underestimate. A bond can default and still repay 70 cents on the dollar, or it can repay close to nothing if it ranks behind other creditors. Where a claim sits in the capital structure, and what collateral backs it, often decides the loss more than the default itself.
Key Takeaways
- Credit risk is the chance that a borrower fails to pay interest or principal in full and on time.
- Lenders estimate expected loss by multiplying the probability of default, the loss given default and the exposure at default.
- The credit spread is the extra yield investors demand for carrying credit risk, and it widens when a borrower looks weaker.
- Bond prices can fall sharply on a downgrade or wider spreads long before any payment is missed.
- Credit risk is borrower-specific, while interest rate risk hits all fixed-rate bonds when market rates rise.
Can a bond lose value from credit risk without defaulting?
Yes. If investors start to see the issuer as riskier, they demand a higher yield, and the bond's price falls to deliver it. A downgrade alone can cut the price by several percent.
Do US Treasury bonds have credit risk?
Markets treat Treasuries as close to free of default risk because the US government borrows in a currency it issues. They still carry interest rate risk and inflation risk, and S&P did cut the US rating from AAA to AA+ in August 2011.
What is a junk bond?
A junk bond, or high-yield bond, is rated below BBB- by S&P and Fitch or below Baa3 by Moody's. It pays a higher yield because the market sees a larger chance of default.
How is credit risk different from counterparty risk?
Credit risk covers any borrower that may fail to repay a known amount. Counterparty risk is the trading version, where the amount owed changes with market prices over the life of a contract.
