The WACC of American Express Co (AXP) is 6.6%.
| Range | Selected | |
| Cost of equity | 6.40% - 9.60% | 8.00% |
| Tax rate | 21.10% - 22.80% | 21.95% |
| Cost of debt | 4.00% - 9.10% | 6.55% |
| WACC | 4.8% - 8.4% | 6.6% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.55 | 0.85 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.40% | 9.60% |
| Tax rate | 21.10% | 22.80% |
| Debt/Equity ratio | 0.96 | 0.96 |
| Cost of debt | 4.00% | 9.10% |
| After-tax WACC | 4.8% | 8.4% |
| Selected WACC | 6.6% | |