It's a matter that many people overlook, but the brokerage fees for stocks really eat into our profits more than we think. My friend once bought stocks without paying attention to the commission fees, and after calculating, he was shocked to find that he had lost 30% of his profit.

So I studied which broker charges the lowest fees, and found that it's not an easy question because each has different strategies. Some have low commissions but minimum fees, others have no minimum but higher rates. Moreover, if you open a Cash Balance account versus a Cash Account, the fees differ again.

From what I gathered, currently, several good stock brokers include SBI Thai Online, which charges only 0.075% for a Cash Balance account with no minimum fee, making it the cheapest in the market right now. Also, Liberator, known for 0% commission if trading through the app, with no minimum fee either.

For those with small capital, minimum fees are very important. Bualuang, Krungthai XSpring, and Phillip Capital either have no minimum fee or very low minimums. Trading small volumes in these accounts can save quite a bit.

Most stock brokers typically charge around 0.15% for Cash Balance and 0.20% for Cash Accounts when you place orders yourself online. If you use a service where a human executes the trades, the fees might be higher.

And importantly, remember that the brokerage fee paid is not just a part of the profit; it’s calculated repeatedly every time you trade. If you trade often, it accumulates quickly. Therefore, choosing a stock broker with reasonable fees is also part of a good investment strategy.