The WACC of Mersen SA (MRN.PA) is 7.9%.
| Range | Selected | |
| Cost of equity | 9.20% - 12.60% | 10.90% |
| Tax rate | 23.50% - 23.80% | 23.65% |
| Cost of debt | 4.00% - 4.50% | 4.25% |
| WACC | 6.8% - 9.0% | 7.9% |
| Category | Low | High |
| Long-term bond rate | 3.0% | 3.5% |
| Equity market risk premium | 5.8% | 6.8% |
| Adjusted beta | 1.07 | 1.26 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 9.20% | 12.60% |
| Tax rate | 23.50% | 23.80% |
| Debt/Equity ratio | 0.65 | 0.65 |
| Cost of debt | 4.00% | 4.50% |
| After-tax WACC | 6.8% | 9.0% |
| Selected WACC | 7.9% | |