The WACC of Armstrong World Industries Inc (AWI) is 7.8%.
| Range | Selected | |
| Cost of equity | 6.20% - 10.40% | 8.30% |
| Tax rate | 23.10% - 24.20% | 23.65% |
| Cost of debt | 4.00% - 4.90% | 4.45% |
| WACC | 5.9% - 9.8% | 7.8% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.51 | 0.99 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.20% | 10.40% |
| Tax rate | 23.10% | 24.20% |
| Debt/Equity ratio | 0.1 | 0.1 |
| Cost of debt | 4.00% | 4.90% |
| After-tax WACC | 5.9% | 9.8% |
| Selected WACC | 7.8% | |