The WACC of Summit Materials Inc (SUM) is 8.3%.
| Range | Selected | |
| Cost of equity | 7.80% - 10.80% | 9.30% |
| Tax rate | 22.20% - 22.90% | 22.55% |
| Cost of debt | 5.20% - 6.10% | 5.65% |
| WACC | 7.1% - 9.6% | 8.3% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.86 | 1.06 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.80% | 10.80% |
| Tax rate | 22.20% | 22.90% |
| Debt/Equity ratio | 0.25 | 0.25 |
| Cost of debt | 5.20% | 6.10% |
| After-tax WACC | 7.1% | 9.6% |
| Selected WACC | 8.3% | |