Capital Structure
Market value of equity ($)
shares outstanding × market price
Market value of debt ($)
use 0 if the firm is all-equity
Equity
—
E
Debt
—
D
Total
—
V = E + D
V = E + D → weights from each market value
Component Costs
Cost of equity (%)
%
return shareholders require
Pre-tax cost of debt (%)
%
yield on the firm’s borrowings
Corporate tax rate (%)
%
tax shield lowers the after-tax cost of debt
Estimation only. Market values of equity and debt are entered from your own sources; WACC is computed entirely in your browser.
Awaiting input
WACC
—
Enter market values for equity and debt plus the cost of each component and the tax rate to see your weighted average cost of capital.
Equity Weight
—
E ÷ V of total capital
Debt Weight
—
D ÷ V of total capital
After-tax Cost of Debt
—
—
Total Capital
—
E + D at market value
Equity Contribution
—
—
Debt Contribution
—
—
Plain-Language Result
Fill in the inputs above to get a plain-language read of your cost of capital and how your capital mix shapes it.
WACC Across Debt–Equity Mixes
| Debt weight | Equity weight | After-tax debt cost | WACC | Change vs. now |
|---|
WACC = Ké × wE + Kd(1 − T) × wD, where wE = E ÷ (E + D) and wD = D ÷ (E + D). The sensitivity table holds your component costs fixed and re-weights the mix from all-equity to 90% debt so you can see how the split alone moves the blended rate. All calculations run client-side — no data leaves your browser.