The WACC of Spire Inc (SR) is 5.0%.
| Range | Selected | |
| Cost of equity | 5.80% - 7.80% | 6.80% |
| Tax rate | 17.40% - 19.40% | 18.40% |
| Cost of debt | 4.00% - 4.60% | 4.30% |
| WACC | 4.5% - 5.6% | 5.0% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.42 | 0.52 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 5.80% | 7.80% |
| Tax rate | 17.40% | 19.40% |
| Debt/Equity ratio | 1.15 | 1.15 |
| Cost of debt | 4.00% | 4.60% |
| After-tax WACC | 4.5% | 5.6% |
| Selected WACC | 5.0% | |