Browse Investing

Credit Spread

Fixed Income

Extra bond yield investors demand over a safer benchmark to compensate for credit risk and related fixed-income risks.

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Credit spread is the extra yield a riskier bond offers over a safer benchmark bond of similar maturity. In practice, the benchmark is often a government bond, so the spread captures how much additional compensation investors want for default risk and related uncertainties.

Chart comparing Treasury and corporate bond yields, with the gap labeled as credit spread.

Credit spread is the yield gap between a riskier bond and a safer benchmark of similar maturity.

Credit Spread Formula

$$ \text{Credit Spread} = \text{Yield on Risky Bond} - \text{Yield on Benchmark Bond} $$

If a corporate bond yields 6.2% and a comparable government bond yields 4.0%, the credit spread is 2.2%, or 220 basis points.

Why It Matters

Credit spread matters because it helps investors separate:

  • general rate levels
  • issuer-specific credit risk
  • liquidity stress
  • broader market risk appetite

Wider spreads usually mean the market is demanding more compensation for owning risky debt. Tighter spreads usually mean investors are more comfortable bearing that risk.

Credit Spread vs. Other Spread Measures

Measure What it compares Best use Main limitation
Yield Spread Any two yields General relative-yield comparison Too broad to specify what the spread means
Credit Spread Risky bond versus safer benchmark Default-risk and corporate-bond analysis Can still include liquidity and technical effects
G-Spread Bond yield versus a government bond of similar maturity Quick benchmark comparison Uses one benchmark point rather than the whole curve
Z-Spread Bond price versus the full spot curve Richer relative-value analysis for option-free bonds More technical and curve-dependent

How It Works in Finance Practice

A corporate bond can lose value because government yields rise, because its credit spread widens, or because both happen at once. That is why portfolio managers monitor spread risk separately from plain interest-rate risk.

Practical Example

Suppose two 10-year bonds trade at these yields:

  • government bond: 4.1%
  • corporate bond: 5.4%

The corporate bond’s credit spread is:

$$ 5.4\% - 4.1\% = 1.3\% $$

That 130-basis-point gap is the market’s rough compensation for credit and related risks beyond the safer benchmark.

A wider credit spread does not guarantee default

It signals that the market sees more risk, not that nonpayment is certain.

Credit spread is not only about default probability

Liquidity, risk aversion, and market technicals can widen or tighten spreads even if the issuer’s fundamentals barely change.

  • Yield Spread: The broader category that credit spread sits inside.
  • G-Spread: A common government-benchmark spread used in bond markets.
  • Z-Spread: Uses the full benchmark curve instead of one comparison bond.
  • Option-Adjusted Spread: Refines spread analysis when embedded options matter.
  • Default Risk: One of the main reasons risky bonds need a spread over safer debt.

FAQs

Why do credit spreads widen during stress?

Because investors demand more compensation when they become more worried about defaults, liquidity, or recession risk.

Can credit spreads tighten even if government yields are rising?

Yes. If credit conditions improve, spreads can tighten even while the overall level of rates moves higher.

Is credit spread the same as a probability of default?

No. It is a market price signal that mixes credit risk with liquidity, risk appetite, and other market conditions.
Revised on Monday, May 18, 2026
Default Spread