# Yield gap

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The yield gap or yield ratio is the ratio of the dividend yield of an equity and the yield of a long-term government bond. Typically equities have a higher yield (as a percentage of the market price of the equity thus reflecting the higher risk of holding an equity.[1] [2]

$\mbox{Yield Gap} = \frac {\mbox{Yield Ratio of Equity}} {\mbox{Yield Ratio of Bond}}$

The purpose of calculating the yield gap is to assess whether the equity is over or under priced as compared to bonds. For a given equity, the following cases may be considered:

• If the yield gap is numerically small, then equity yield is lower than bond yield implying that the equity is overpriced.
• If the yield gap is numerically large, then equity yield is higher than bond yield implying that the equity is cheap.