As we all know, debt is always cheaper and also riskier because through debt financing, the debt interested is deductible. Also, through debt financing, however, if you hold a lot of debt, you will be seen as a risky company, showing investors that if you have problems regarding your cash flows, you will have trouble paying back the loan.
Financing through equity, on the other hand, has a major advantage which a company do not need to repay the money that investors have invested in the company, but, of course in investors' point of view, they hope to regain their investment through future profits from the company.
Weighted average cost of capital (WACC), can be difficult to calculate because it considers both cost of debt and cost of equity. While cost of debt is easier to be calculated, cost of equity is a harder way to calculate because it has various forms of calculating where different company will use different methods to calculate it. Companies can either use capital asset pricing model, dividend growth model or bond yield plus risk premium method to calculate cost of equity. The main problem of calculating cost of equity is that there are at least one component in these formula which is an estimate, hence, giving a different result of estimates of cost of equity which is not accurate.
Question is, are these businesses confident that their cost of capital estimates are correct on their decision on strategic investments? A survey was generated from 424 responses back in 2013 and the response was, many were not confident with their cost of capital estimates which can define the future of their company.
Why weren't those businesses confident?
- Small fluctuations in the cost of capital actually affect the discounted cash flow and strategic decision of the future investments and acquisitions.
- Weighted average cost of capital were not used by businesses to be calculated.
- Many organisations are using cap or floor on the risk-free rate
- Many organisations prefer to use Capital Asset Pricing Model (CAPM) to estimate cost of equity.
In the context of Modigliani and Miller (M&M) in 1958, they argued that capital structure has no impact on WACC because they assumed that there are no transaction costs, no taxation and have perfect capital markets. But in the real world, these are impossible.
However, many financial managers have used WACC in decision making because it lowers the cost of equity by lowering the beta of the company, thus, increasing shareholder value. Besides that, by lowering cost of debt, it lowers the gearing level to avoid financial distress. Also, by issuing bond, companies are exempted from tax interest because it is deductible. And finally, increasing optimal leverage by lowering credit spreads and cost of equity, resulting an increase in relative tax shield. An increase in leverage increases shareholder values.