I just noticed that broker fees are very important for profit margins. If the commission is high, the profit decreases significantly. So I looked up and compared which broker is the cheapest in 2026.

From what I found, Bualuang (BLS) is a good choice if you're buying a small number of shares because there are no minimum fees. You pay only based on the amount bought. The broker fee is 0.15% for Cash Balance accounts and 0.20% for Cash Accounts, with no minimum fee (if using E-Confirmation).

Then there's SBI Thai Online (SBITO), which has much lower fees than the average, at 0.075% for Cash Balance and 0.10% for Cash Account, with a minimum of 50 baht. This is a rare rate in the market.

As for Liberator, it's super attractive—charging 0% broker fee with no minimum fee. You can buy any amount, making it the most cost-effective for frequent traders.

Most other brokers are similar, such as Krungthai, XSpring, TISCO, and Thanachart, with standard rates of 0.15% and 0.20%. Some have a minimum of 50 baht, others do not.

InnoVest X (Siam Commercial Securities) also waives minimum fees if you request E-Statement. The broker fees are the same: 0.15% and 0.20%.

Philips has the lowest minimum fee at 30 baht, which might be suitable if you're buying very few shares.

In reality, choosing a broker depends on how much you trade. If you're buying small amounts, options with no minimum fee like Bualuang or the lowest fee like SBI are good. But if you trade regularly, the small differences in broker fees may not matter much, and you might choose based on system convenience or other services.

Additionally, CFD trading is another option for those wanting leverage, but be cautious of higher risks.