Sales & Trading Interview Practice Test

The key factor is the cost of capital. Financing decisions between debt and equity are driven by which option minimizes the overall cost to the firm and preserves value. If the after-tax cost of debt is lower than the expected return demanded by equity investors, debt tends to be cheaper and can lower the weighted average cost of capital (WACC). Conversely, if debt becomes expensive or raises distress risk, issuing equity may be more favorable. Taxes matter because interest payments are tax-deductible, giving debt a tax shield, but this is not the sole influence—the broader comparison of how the market prices debt and equity and the impact on dilution, financial flexibility, and risk comes into play. Management preferences or shareholder voting can influence timing or approval details, but they do not override the fundamental driver: which financing form offers the lower cost of capital in the current market.