The WACC of Interactive Brokers Group Inc (IBKR) is 9.5%.
| Range | Selected | |
| Cost of equity | 6.20% - 10.90% | 8.55% |
| Tax rate | 7.10% - 8.00% | 7.55% |
| Cost of debt | 12.70% - 16.70% | 14.70% |
| WACC | 7.2% - 11.7% | 9.5% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.51 | 1.07 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.20% | 10.90% |
| Tax rate | 7.10% | 8.00% |
| Debt/Equity ratio | 0.22 | 0.22 |
| Cost of debt | 12.70% | 16.70% |
| After-tax WACC | 7.2% | 11.7% |
| Selected WACC | 9.5% | |