The WACC of West Pharmaceutical Services Inc (WST) is 7.3%.
| Range | Selected | |
| Cost of equity | 6.30% - 8.40% | 7.35% |
| Tax rate | 17.60% - 17.90% | 17.75% |
| Cost of debt | 4.00% - 4.50% | 4.25% |
| WACC | 6.3% - 8.4% | 7.3% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.53 | 0.63 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 6.30% | 8.40% |
| Tax rate | 17.60% | 17.90% |
| Debt/Equity ratio | 0.01 | 0.01 |
| Cost of debt | 4.00% | 4.50% |
| After-tax WACC | 6.3% | 8.4% |
| Selected WACC | 7.3% | |