Equity Risk Premium is a finance-focused reference term for equity ownership, valuation, or balance-sheet analysis.
The equity risk premium (ERP) is the extra return investors expect from holding equities instead of a risk-free asset.
It is the reward investors demand for accepting the uncertainty, volatility, and downside risk that come with stock ownership.
If investors expect stocks to return 8% and the risk-free rate is 3%, the implied equity risk premium is 5%.
ERP is one of the most important assumptions in finance because it affects:
If the required premium for holding equities rises, discount rates rise too, and stock valuations usually come under pressure.
There is no single universally accepted method.
Common approaches include:
Different methods can produce different numbers, which is why ERP is both important and controversial.
In practice, market risk premium and equity risk premium are often used very similarly, especially when “the market” refers to the broad equity market.
Still, some analysts use:
The concepts overlap heavily, but wording can signal analytical context.
ERP is central to the capital asset pricing model (CAPM), where expected return is built from:
That is why changing the premium assumption can materially alter required returns and valuation outputs.
ERP can change when investors become more or less willing to hold risky assets.
It may rise when:
It may fall when: