The WACC of Interactive Brokers Group Inc (IBKR) is 7.8%.
| Range | Selected | |
| Cost of equity | 5.70% - 8.40% | 7.05% |
| Tax rate | 7.80% - 8.00% | 7.90% |
| Cost of debt | 10.80% - 15.60% | 13.20% |
| WACC | 6.4% - 9.3% | 7.8% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.4 | 0.63 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 5.70% | 8.40% |
| Tax rate | 7.80% | 8.00% |
| Debt/Equity ratio | 0.18 | 0.18 |
| Cost of debt | 10.80% | 15.60% |
| After-tax WACC | 6.4% | 9.3% |
| Selected WACC | 7.8% | |