The WACC of WD-40 Co (WDFC) is 6.6%.
| Range | Selected | |
| Cost of equity | 5.70% - 7.70% | 6.70% |
| Tax rate | 19.80% - 21.00% | 20.40% |
| Cost of debt | 4.00% - 4.50% | 4.25% |
| WACC | 5.6% - 7.6% | 6.6% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 0.39 | 0.51 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 5.70% | 7.70% |
| Tax rate | 19.80% | 21.00% |
| Debt/Equity ratio | 0.03 | 0.03 |
| Cost of debt | 4.00% | 4.50% |
| After-tax WACC | 5.6% | 7.6% |
| Selected WACC | 6.6% | |