The WACC of Summit Materials Inc (SUM) is 8.8%.
| Range | Selected | |
| Cost of equity | 8.50% - 12.30% | 10.40% |
| Tax rate | 22.20% - 22.90% | 22.55% |
| Cost of debt | 5.10% - 5.20% | 5.15% |
| WACC | 7.4% - 10.2% | 8.8% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.01 | 1.32 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 8.50% | 12.30% |
| Tax rate | 22.20% | 22.90% |
| Debt/Equity ratio | 0.32 | 0.32 |
| Cost of debt | 5.10% | 5.20% |
| After-tax WACC | 7.4% | 10.2% |
| Selected WACC | 8.8% | |