The WACC of Ribbon Communications Inc (RBBN) is 8.0%.
| Range | Selected | |
| Cost of equity | 6.60% - 9.50% | 8.05% |
| Tax rate | 10.10% - 13.70% | 11.90% |
| Cost of debt | 7.00% - 10.70% | 8.85% |
| WACC | 6.5% - 9.5% | 8.0% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.59 | 0.83 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.60% | 9.50% |
| Tax rate | 10.10% | 13.70% |
| Debt/Equity ratio | 0.4 | 0.4 |
| Cost of debt | 7.00% | 10.70% |
| After-tax WACC | 6.5% | 9.5% |
| Selected WACC | 8.0% | |