The WACC of Thai Oil PCL (TOP.BK) is 7.2%.
| Range | Selected | |
| Cost of equity | 8.80% - 11.70% | 10.25% |
| Tax rate | 16.60% - 18.90% | 17.75% |
| Cost of debt | 4.00% - 7.80% | 5.90% |
| WACC | 5.7% - 8.7% | 7.2% |
| Category | Low | High |
| Long-term bond rate | 2.6% | 3.1% |
| Equity market risk premium | 7.4% | 8.4% |
| Adjusted beta | 0.84 | 0.97 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 8.80% | 11.70% |
| Tax rate | 16.60% | 18.90% |
| Debt/Equity ratio | 1.3 | 1.3 |
| Cost of debt | 4.00% | 7.80% |
| After-tax WACC | 5.7% | 8.7% |
| Selected WACC | 7.2% | |
The Cost of Equity reflects the return a company needs to deliver to shareholders to justify the risk of investing in its shares. It’s computed using the Capital Asset Pricing Model (CAPM), which blends the risk-free rate, the stock’s beta, and the market risk premium.
This method evaluates the stock’s risk compared to a safe investment and the market’s overall volatility.
Here’s how we figure out the cost of equity for TOP.BK:
cost_of_equity (10.25%) = risk_free_rate (2.85%) + equity_risk_premium (7.90%) * adjusted_beta (0.84) + risk_adjustments (0.25%)
We include the risk adjustments, which range from 0% to 1%, to keep our WACC conservatives, especially for companies traded in developing markets.