The WACC of PTT PCL (PTT.BK) is 6.5%.
| Range | Selected | |
| Cost of equity | 8.20% - 14.70% | 11.45% |
| Tax rate | 36.10% - 37.80% | 36.95% |
| Cost of debt | 4.00% - 4.50% | 4.25% |
| WACC | 5.0% - 8.0% | 6.5% |
| Category | Low | High |
| Long-term bond rate | 2.6% | 3.1% |
| Equity market risk premium | 7.4% | 8.4% |
| Adjusted beta | 0.76 | 1.32 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 8.20% | 14.70% |
| Tax rate | 36.10% | 37.80% |
| Debt/Equity ratio | 1.28 | 1.28 |
| Cost of debt | 4.00% | 4.50% |
| After-tax WACC | 5.0% | 8.0% |
| Selected WACC | 6.5% | |
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 PTT.BK:
cost_of_equity (11.45%) = risk_free_rate (2.85%) + equity_risk_premium (7.90%) * adjusted_beta (0.76) + 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.