The WACC of Interactive Brokers Group Inc (IBKR) is 7.9%.
| Range | Selected | |
| Cost of equity | 7.40% - 10.20% | 8.80% |
| Tax rate | 6.10% - 6.80% | 6.45% |
| Cost of debt | 5.00% - 5.00% | 5.00% |
| WACC | 6.8% - 9.1% | 7.9% |
| Category | Low | High |
| Long-term bond rate | 4.2% | 4.7% |
| Equity market risk premium | 5.0% | 6.0% |
| Adjusted beta | 0.64 | 0.83 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.40% | 10.20% |
| Tax rate | 6.10% | 6.80% |
| Debt/Equity ratio | 0.25 | 0.25 |
| Cost of debt | 5.00% | 5.00% |
| After-tax WACC | 6.8% | 9.1% |
| Selected WACC | 7.9% | |