The WACC of Spirent Communications plc (SPT.L) is 7.5%.
| Range | Selected | |
| Cost of equity | 6.00% - 9.10% | 7.55% |
| Tax rate | 12.50% - 12.90% | 12.70% |
| Cost of debt | 4.00% - 4.60% | 4.30% |
| WACC | 6.0% - 9.0% | 7.5% |
| Category | Low | High |
| Long-term bond rate | 4.0% | 4.5% |
| Equity market risk premium | 6.0% | 7.0% |
| Adjusted beta | 0.34 | 0.59 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.00% | 9.10% |
| Tax rate | 12.50% | 12.90% |
| Debt/Equity ratio | 0.02 | 0.02 |
| Cost of debt | 4.00% | 4.60% |
| After-tax WACC | 6.0% | 9.0% |
| Selected WACC | 7.5% | |