The WACC of Monolithic Power Systems Inc (MPWR) is 9.0%.
| Range | Selected | |
| Cost of equity | 11.90% - 15.30% | 13.60% |
| Tax rate | 7.80% - 12.90% | 10.35% |
| Cost of debt | 5.00% - 5.00% | 5.00% |
| WACC | 8.3% - 9.8% | 9.0% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.74 | 1.86 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 11.90% | 15.30% |
| Tax rate | 7.80% | 12.90% |
| Debt/Equity ratio | 1 | 1 |
| Cost of debt | 5.00% | 5.00% |
| After-tax WACC | 8.3% | 9.8% |
| Selected WACC | 9.0% | |