It is similar to using the market approach in the income approach instead of adding separate (and potentially redundant) measures of risk in the build-up approach. The use of total beta (developed by Aswath Damodaran) is a relatively new concept. It is, however, gaining acceptance in the business valuation Consultancy community since it is based on modern portfolio theory. Total beta can help appraisers develop a cost of capital who were content to use their intuition alone when previously adding a purely subjective company-specific risk premium in the build-up approach.