Valuation professionals often use discounted cash flow (DCF) techniques to determine the value of a business or estimate economic losses. A critical input in a DCF model is the cost of capital — the rate that’s used to discount future earnings to today’s dollars. Modest changes in this rate can have a major impact on the expert’s conclusion, so it’s important to get it right. Financing options The cost of capital represents the expected rate of return that the market requires to attract funds to a particular investment. It’s based on the perceived risk of the investment. All else equal, as risk increases, the discount rate rises, and the value of the business or investment falls (and vice versa). The cost of capital depends in part on whether...