What factor primarily influences whether WACC is higher for a 5 billion or a 500 million dollar market cap company?

• A. The size of the company's assets
• B. The capital structure of both companies
• C. The industry in which both companies operate
• D. The historical returns of each company

Answer: (B)

The capital structure of both companies is the primary factor that influences whether the weighted average cost of capital (WACC) is higher for a $5 billion or a $500 million market cap company. WACC is calculated based on the cost of equity, the cost of debt, and the proportions of equity and debt in a company's capital structure.

A larger company, such as the $5 billion market cap company, might have access to different sources of financing compared to a smaller company. Larger firms often have better credit ratings, which can lead to a lower cost of debt. They might also have a higher proportion of equity financing relative to debt, which can influence their overall WACC.

In contrast, smaller companies tend to have higher perceived risks, which could elevate their cost of equity. Investors may require a higher return for investing in a smaller company due to this risk, leading to a higher WACC.

Other factors, such as the size of the company's assets, the industry in which they operate, and historical returns, can certainly impact WACC but do so indirectly or in combination with capital structure effects. For instance, different industries might have varying capital structures and risk profiles, which would affect WACC but still primarily hinge on how that capital is structured.