The WACC of Mersen SA (MRN.PA) is 7.5%.
| Range | Selected | |
| Cost of equity | 8.70% - 12.20% | 10.45% |
| Tax rate | 23.50% - 23.80% | 23.65% |
| Cost of debt | 4.00% - 4.50% | 4.25% |
| WACC | 6.4% - 8.6% | 7.5% |
| Category | Low | High |
| Long-term bond rate | 3.0% | 3.5% |
| Equity market risk premium | 5.8% | 6.8% |
| Adjusted beta | 0.97 | 1.2 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 8.70% | 12.20% |
| Tax rate | 23.50% | 23.80% |
| Debt/Equity ratio | 0.69 | 0.69 |
| Cost of debt | 4.00% | 4.50% |
| After-tax WACC | 6.4% | 8.6% |
| Selected WACC | 7.5% | |