A: The enterprise-value-to-EBITDA ratio varies by industry. However, the EV/EBITDA for the S&P 500 has typically averaged from 11 to 14 over the last few years. As of the end of 2017, the average EV/EBITDA for the S&P was 12.75. As a general guideline, an EV/EBITDA value below 10 is commonly interpreted