The WACC of First Interstate BancSystem Inc (FIBK) is 7.4%.
| Range | Selected | |
| Cost of equity | 10.20% - 14.10% | 12.15% |
| Tax rate | 22.80% - 23.00% | 22.90% |
| Cost of debt | 5.00% - 5.00% | 5.00% |
| WACC | 6.6% - 8.3% | 7.4% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.37 | 1.64 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 10.20% | 14.10% |
| Tax rate | 22.80% | 23.00% |
| Debt/Equity ratio | 1.32 | 1.32 |
| Cost of debt | 5.00% | 5.00% |
| After-tax WACC | 6.6% | 8.3% |
| Selected WACC | 7.4% | |