The WACC of Tetra Tech Inc (TTEK) is 8.7%.
| Range | Selected | |
| Cost of equity | 7.60% - 10.40% | 9.00% |
| Tax rate | 24.20% - 25.90% | 25.05% |
| Cost of debt | 4.50% - 8.10% | 6.30% |
| WACC | 7.3% - 10.1% | 8.7% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.81 | 0.98 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.60% | 10.40% |
| Tax rate | 24.20% | 25.90% |
| Debt/Equity ratio | 0.07 | 0.07 |
| Cost of debt | 4.50% | 8.10% |
| After-tax WACC | 7.3% | 10.1% |
| Selected WACC | 8.7% | |