The formula to calculate the Exclusion Ratio (ER) is:
\[ ER = \left( \frac{Investment}{Expected Return} \right) \times \left( \frac{1}{Life Expectancy} \right) \times 100\% \]
Where:
Let's say the Total Investment is $100,000, the Expected Return is $150,000, and the Life Expectancy is 20 years. Using the formula:
\[ ER = \left( \frac{100,000}{150,000} \right) \times \left( \frac{1}{20} \right) \times 100\% \]
We get:
\[ ER \approx 0.33\% \]
So, the Exclusion Ratio is approximately 0.33%.