The WACC of Quest Diagnostics Inc (DGX) is 6.6%.
| Range | Selected | |
| Cost of equity | 6.30% - 8.50% | 7.40% |
| Tax rate | 22.60% - 23.00% | 22.80% |
| Cost of debt | 4.00% - 4.80% | 4.40% |
| WACC | 5.6% - 7.5% | 6.6% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.54 | 0.66 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.30% | 8.50% |
| Tax rate | 22.60% | 23.00% |
| Debt/Equity ratio | 0.28 | 0.28 |
| Cost of debt | 4.00% | 4.80% |
| After-tax WACC | 5.6% | 7.5% |
| Selected WACC | 6.6% | |