The WACC of Tetra Tech Inc (TTEK) is 8.6%.
| Range | Selected | |
| Cost of equity | 7.60% - 10.10% | 8.85% |
| Tax rate | 19.30% - 24.10% | 21.70% |
| Cost of debt | 5.10% - 8.20% | 6.65% |
| WACC | 7.3% - 9.8% | 8.6% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.81 | 0.94 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.60% | 10.10% |
| Tax rate | 19.30% | 24.10% |
| Debt/Equity ratio | 0.08 | 0.08 |
| Cost of debt | 5.10% | 8.20% |
| After-tax WACC | 7.3% | 9.8% |
| Selected WACC | 8.6% | |