Liquidity premium can be estimated using the following steps:
Identify Liquid and Illiquid Assets: Two comparable assets are selected based on their characteristics, differing only in liquidity levels alone. For example, an analyst might compare two bonds from the same issuer—one with a high degree of liquidity and the other with low liquidity.
Determine the Return on Each Asset: Calculate or obtain the expected return (yield) on both the liquid and illiquid asset. The liquid asset is typically the market benchmark, while the illiquid asset may offer a higher return to compensate for its illiquidity.
Calculate the Difference: Subtract the expected return of the liquid asset from the expected return of the illiquid asset. This difference is the liquidity premium, representing the additional return that investors demand for bearing the risk of illiquidity.
Example:
Suppose a liquid bond offers a return of 5%, while an illiquid bond from the same issuer offers a return of 6%. The liquidity premium for the illiquid bond would be:
Liquidity Premium = 6% - 5% = 1%
Thus, investors demand a 1% premium for holding the illiquid bond.