The WACC of MKS Instruments Inc (MKSI) is 10.5%.
| Range | Selected | |
| Cost of equity | 10.60% - 15.70% | 13.15% |
| Tax rate | 17.20% - 18.80% | 18.00% |
| Cost of debt | 6.40% - 9.10% | 7.75% |
| WACC | 8.5% - 12.5% | 10.5% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.47 | 1.93 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 10.60% | 15.70% |
| Tax rate | 17.20% | 18.80% |
| Debt/Equity ratio | 0.63 | 0.63 |
| Cost of debt | 6.40% | 9.10% |
| After-tax WACC | 8.5% | 12.5% |
| Selected WACC | 10.5% | |