The WACC of Balfour Beatty PLC (BBY.L) is 7.5%.
| Range | Selected | |
| Cost of equity | 7.80% - 10.40% | 9.10% |
| Tax rate | 13.70% - 27.30% | 20.50% |
| Cost of debt | 4.60% - 5.30% | 4.95% |
| WACC | 6.7% - 8.4% | 7.5% |
| Category | Low | High |
| Long-term bond rate | 4.0% | 4.5% |
| Equity market risk premium | 6.0% | 7.0% |
| Adjusted beta | 0.64 | 0.77 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.80% | 10.40% |
| Tax rate | 13.70% | 27.30% |
| Debt/Equity ratio | 0.43 | 0.43 |
| Cost of debt | 4.60% | 5.30% |
| After-tax WACC | 6.7% | 8.4% |
| Selected WACC | 7.5% | |