The WACC of Alcoa Corp (AA) is 9.7%.
| Range | Selected | |
| Cost of equity | 9.80% - 12.50% | 11.15% |
| Tax rate | 26.20% - 27.00% | 26.60% |
| Cost of debt | 4.50% - 5.80% | 5.15% |
| WACC | 8.5% - 10.9% | 9.7% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.3 | 1.36 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 9.80% | 12.50% |
| Tax rate | 26.20% | 27.00% |
| Debt/Equity ratio | 0.24 | 0.24 |
| Cost of debt | 4.50% | 5.80% |
| After-tax WACC | 8.5% | 10.9% |
| Selected WACC | 9.7% | |
The Cost of Equity reflects the return a company needs to deliver to shareholders to justify the risk of investing in its shares. It’s computed using the Capital Asset Pricing Model (CAPM), which blends the risk-free rate, the stock’s beta, and the market risk premium.
This method evaluates the stock’s risk compared to a safe investment and the market’s overall volatility.
Here’s how we figure out the cost of equity for Alcoa:
cost_of_equity (11.15%) = risk_free_rate (4.15%) + equity_risk_premium (5.10%) * adjusted_beta (1.3) + risk_adjustments (0.25%)
We include the risk adjustments, which range from 0% to 1%, to keep our WACC conservatives, especially for companies traded in developing markets.