The WACC of Columbia Banking System Inc (COLB) is 7.9%.
| Range | Selected | |
| Cost of equity | 7.00% - 9.80% | 8.40% |
| Tax rate | 21.10% - 23.10% | 22.10% |
| Cost of debt | 5.00% - 5.00% | 5.00% |
| WACC | 6.7% - 9.2% | 7.9% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.69 | 0.88 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.00% | 9.80% |
| Tax rate | 21.10% | 23.10% |
| Debt/Equity ratio | 0.12 | 0.12 |
| Cost of debt | 5.00% | 5.00% |
| After-tax WACC | 6.7% | 9.2% |
| Selected WACC | 7.9% | |