The WACC of O'Reilly Automotive Inc (ORLY) is 7.8%.
| Range | Selected | |
| Cost of equity | 6.90% - 9.40% | 8.15% |
| Tax rate | 22.20% - 22.30% | 22.25% |
| Cost of debt | 4.50% - 4.90% | 4.70% |
| WACC | 6.6% - 9.0% | 7.8% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.66 | 0.81 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.90% | 9.40% |
| Tax rate | 22.20% | 22.30% |
| Debt/Equity ratio | 0.08 | 0.08 |
| Cost of debt | 4.50% | 4.90% |
| After-tax WACC | 6.6% | 9.0% |
| Selected WACC | 7.8% | |