The WACC of AT&T Inc (T) is 6.5%.
| Range | Selected | |
| Cost of equity | 7.10% - 10.80% | 8.95% |
| Tax rate | 26.20% - 27.00% | 26.60% |
| Cost of debt | 4.90% - 6.60% | 5.75% |
| WACC | 5.3% - 7.7% | 6.5% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.71 | 1.05 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 7.10% | 10.80% |
| Tax rate | 26.20% | 27.00% |
| Debt/Equity ratio | 1.1 | 1.1 |
| Cost of debt | 4.90% | 6.60% |
| After-tax WACC | 5.3% | 7.7% |
| Selected WACC | 6.5% | |