The WACC of Monolithic Power Systems Inc (MPWR) is 9.5%.
| Range | Selected | |
| Cost of equity | 12.80% - 16.30% | 14.55% |
| Tax rate | 7.80% - 12.90% | 10.35% |
| Cost of debt | 5.00% - 5.00% | 5.00% |
| WACC | 8.7% - 10.3% | 9.5% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.95 | 2.03 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 12.80% | 16.30% |
| Tax rate | 7.80% | 12.90% |
| Debt/Equity ratio | 1 | 1 |
| Cost of debt | 5.00% | 5.00% |
| After-tax WACC | 8.7% | 10.3% |
| Selected WACC | 9.5% | |