The WACC of AT&T Inc (T) is 5.4%.
| Range | Selected | |
| Cost of equity | 5.50% - 8.00% | 6.75% |
| Tax rate | 26.20% - 27.00% | 26.60% |
| Cost of debt | 4.90% - 5.60% | 5.25% |
| WACC | 4.6% - 6.3% | 5.4% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.35 | 0.56 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 5.50% | 8.00% |
| Tax rate | 26.20% | 27.00% |
| Debt/Equity ratio | 0.8 | 0.8 |
| Cost of debt | 4.90% | 5.60% |
| After-tax WACC | 4.6% | 6.3% |
| Selected WACC | 5.4% | |