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Capital structure calculator

Enter the company's total interest-bearing debt and equity. The calculator works out their shares of total capital.

Result

Equity weight

Debt weight
Total capital

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This calculation is for informational purposes only and does not replace advice from a qualified professional. Formulas and rates may not fit your exact situation — double-check the figures before making decisions.

How it is calculated

Total capital = debt + equity. Debt weight = debt ÷ total capital × 100%, equity weight = equity ÷ total capital × 100% — the two always add up to 100%.

Capital structure gives exactly the weights used to weight the cost of debt and cost of equity when computing WACC: the higher the debt share, the more the overall cost of capital depends on the cost of debt, and vice versa. The weights computed here can be plugged straight into the separate WACC calculator.

There's no single correct capital structure for every company: more debt usually lowers the weighted average cost of capital thanks to the interest tax shield, but it also raises financial leverage and risk — the optimum depends on cash flow stability and the industry.

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