Start with regulation. Choose brokers that hold a current license and accept Thai residents. Check how client money is held, and whether funds stay in segregated accounts. Review platform stability, order execution, and available pairs. Compare spreads, commissions, and conversion costs. Look for clear fees, fast and local funding options, and responsive support in Thai and English. Education, risk controls, and multi-factor login add value. Read the client agreement and understand how complaints are handled before you open an account.