The WACC of Ribbon Communications Inc (RBBN) is 7.5%.
| Range | Selected | |
| Cost of equity | 6.80% - 9.70% | 8.25% |
| Tax rate | 14.10% - 16.00% | 15.05% |
| Cost of debt | 7.00% - 7.10% | 7.05% |
| WACC | 6.6% - 8.5% | 7.5% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.65 | 0.86 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.80% | 9.70% |
| Tax rate | 14.10% | 16.00% |
| Debt/Equity ratio | 0.49 | 0.49 |
| Cost of debt | 7.00% | 7.10% |
| After-tax WACC | 6.6% | 8.5% |
| Selected WACC | 7.5% | |