

Yield gap is the difference between two yields that are being compared. The term can mean different things depending on context, such as the gap between bond yields and equity earnings yield, the gap between two countries’ bond yields, or the difference between actual and potential agricultural output. In finance, it is commonly used to compare relative attractiveness or risk across assets.
Investors use yield gaps to assess whether one asset class offers enough return compared with another. For example, the gap between corporate bond yields and government bond yields may indicate credit spread and risk appetite. The gap between dividend yield and bond yield may influence portfolio allocation. For businesses, widening yield gaps can affect borrowing costs, investor demand, valuation multiples, and treasury investment decisions.
Yield gap analysis may consider:
• Government bond yield versus corporate bond yield.
• Short-term versus long-term bond yields.
• Domestic yield versus foreign yield.
• Earnings yield versus bond yield.
• Actual return versus required return.
A widening gap may signal rising risk perception, inflation expectations, liquidity stress, or better compensation for risk. A narrowing gap may signal confidence, lower risk premiums, or overvaluation.
Yield gaps influence funding decisions and investor behaviour. A company planning to issue debt may face higher pricing if spreads widen. A treasury team investing surplus cash may shift allocation if the yield gap between instruments changes. Management should not interpret yield gap mechanically; it must be read along with credit quality, duration, liquidity, tax impact, and macroeconomic conditions.