What is capital structure?

Capital structure refers to the mix of debt and equity a business uses to finance its operations and growth. For professional service firms, capital structure decisions involve how much to fund through retained earnings, owner investment, or borrowed funds. The right structure balances access to capital, cost of capital, and financial risk based on the firm's situation and objectives.

Key characteristics

• Mix of debt and equity financing

• Affects the cost of capital and financial risk

• Debt provides leverage but requires repayment

• Equity has no repayment, but dilutes ownership

• Should match the firm's risk tolerance and needs

• Impacts financial flexibility and return on equity

Why it matters for professional service firms

Capital structure affects both risk and returns. A firm funded entirely by equity has no debt obligations but may forgo growth opportunities. A firm with significant debt has obligations that must be met regardless of performance. Professional service firms should design capital structures that match their stability: highly predictable revenue supports more debt, while volatile revenue requires a larger equity cushion. The structure should provide capital for operations and growth without creating unsustainable obligations.

Real-world example

Lisa's consulting firm was entirely equity funded (owner capital plus retained earnings). When an expansion opportunity arose requiring $250K, options were: owner investment (diluting other opportunities), retained earnings (insufficient), or debt (new for the firm). Analysis: With stable revenue and strong cash flow, debt was appropriate. Secured $200K term loan at 7% interest, used $50K from earnings. Result: expansion completed, debt serviced comfortably from operating cash flow, and owner retained capital for other investments. The appropriate capital structure enabled growth that pure equity funding would have prevented.