I just noticed that the fees for each stock broker are quite different. Choosing the wrong one can be really important because it will eat into your profits continuously.

From comparing the fees of various brokers in 2026, most cash balance accounts are around 0.15%, but Liberator is super cheap—it's actually 0%, with no fees at all. You only pay what you need to send to the stock exchange. SBI Thai Online is also good at 0.075%, half of what others charge.

But if someone is buying stocks in small amounts, they need to watch out for minimum fees. Some charge 50 baht, others 30 baht. For example, if you buy stocks worth only 10,000 baht at a rate of 0.15%, that’s just 15 baht. But if the broker charges a minimum of 50 baht, you have to pay 50 baht. Is that a loss?

Therefore, when choosing a broker based on fees, you should consider how much you plan to invest. If you invest a lot, pick one with no minimum fee. If you invest a little, choose one with the lowest minimum fee or none at all. For example, Liberator is great because it has no fees at all and keeps expanding. Bualuang, Krungthai XSpring also have no minimum fees, so if you buy small amounts, you can save a lot.

Another thing is, a cash account is always more expensive than a cash balance account because you can buy more than your available funds. Usually, the fee is around 0.20% for cash accounts. So, if you're a beginner and investing small amounts, it’s better to choose a cash balance account and a broker with no minimum fee or the lowest minimum fee to save on fees.