How to use the WACC Calculator

Calculate weighted average cost of capital from the company’s assumed financing mix and required returns.

Calculation formula

WACC = E/(E+D) × cost of equity + D/(E+D) × cost of debt × (1 − tax rate).

Recommended steps

1. Enter values using the units shown beside each field.
2. Review whether the example assumptions match your situation.
3. Run the calculator and compare the key metrics.
4. Use the source data or official rates when precision matters.

Known limitations

Debt and equity should use market values when practical. Does not estimate the cost of equity or debt automatically.