The WACC of Gulf Marine Services PLC (GMS.L) is 9.2%.
| Range | Selected | |
| Cost of equity | 11.10% - 14.40% | 12.75% |
| Tax rate | 4.90% - 5.60% | 5.25% |
| Cost of debt | 5.80% - 7.60% | 6.70% |
| WACC | 8.0% - 10.3% | 9.2% |
| Category | Low | High |
| Long-term bond rate | 4.0% | 4.5% |
| Equity market risk premium | 6.0% | 7.0% |
| Adjusted beta | 1.2 | 1.35 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 11.10% | 14.40% |
| Tax rate | 4.90% | 5.60% |
| Debt/Equity ratio | 1.29 | 1.29 |
| Cost of debt | 5.80% | 7.60% |
| After-tax WACC | 8.0% | 10.3% |
| Selected WACC | 9.2% | |