What is Commission in Forex Trading? A Complete Guide for Thailand Traders

What Exactly is a Forex Commission?

A commission is a flat fee per trade, typically charged per standard lot (100,000 units). It is common in ECN (Electronic Communication Network) and STP (Straight Through Processing) accounts, where the broker offers raw spreads from liquidity providers. For Thailand traders, a typical commission ranges from $3 to $7 per lot round turn (both entry and exit). This translates to approximately 100 to 250 THB per standard lot, depending on the current exchange rate.

How Commission Works in Practice

When you open a trade, the broker deducts the commission from your account balance. For example, if you trade 1 standard lot of EUR/USD with a $5 commission, you pay $5 when you enter and another $5 when you exit, totaling $10 (around 350 THB). This is separate from the spread, which is the difference between bid and ask prices. ECN accounts usually have spreads as low as 0.0 to 0.3 pips, but the commission makes up the broker’s revenue.

Commission vs. Spread: Which is Better for Thailand Traders?

For experienced Thailand traders, an ECN account with a low spread and a separate commission often provides lower overall costs, especially for high-frequency trading. For example, if you scalp 10 lots per day, a $5 commission per lot costs $50 (1,750 THB), but the tight spreads can save you more than that compared to a commission-free account with a 2-pip spread. Use a cost calculator in THB to compare total expenses.

How to Calculate Commission in THB

To convert commission to THB, multiply the USD commission by the current USD/THB exchange rate. For instance, if the rate is 35 THB per USD, a $7 commission equals 245 THB. Always check if your broker charges commission per side (entry and exit) or round turn. Some brokers also offer discounts for high-volume traders, which can significantly reduce costs for active Thailand traders.

For Thailand traders, commission awareness is vital due to the popularity of ECN accounts among experienced locals. Many Thai traders prefer brokers that accept PromptPay deposits for fast and low-cost funding. However, not all brokers that accept PromptPay are transparent about commission structures. Always read the fine print: some brokers may add hidden fees on top of the stated commission, especially when converting THB to USD for trading. Bank transfers via Thai banks (e.g., Bangkok Bank, Kasikorn) may also incur additional fees, so using PromptPay or Skrill can reduce costs. SEC Thailand requires all licensed brokers to clearly disclose commission rates in their fee schedules. If a broker is not regulated by SEC Thailand, you have limited recourse if hidden commissions are charged. Always verify a broker’s license on the SEC Thailand website before depositing funds. For experienced traders, negotiating lower commissions based on trading volume is possible with some brokers, so don’t hesitate to ask for a better rate.

1. Check the broker’s fee schedule
   Review the broker’s website for commission rates per lot. Look for details in both USD and THB equivalents. Ensure the broker is regulated by SEC Thailand.
2. Choose the right account type
   Decide between a commission-free account (wider spreads) or an ECN account (low spreads + commission). For scalping or high-volume trading, ECN is usually cheaper in THB.
3. Calculate total cost in THB
   Multiply the commission per lot by your expected trading volume. Convert USD to THB using the current rate. Include any deposit/withdrawal fees via PromptPay or bank transfer.
4. Test with a demo account
   Use a demo account to simulate trades and see how commission affects your balance. This helps you understand the real cost before depositing real THB via PromptPay.

Commission vs. Markup: Some brokers do not charge a separate commission but instead mark up the spread. For Thailand traders, this can be deceptive because the spread may widen during volatile times, increasing your cost unpredictably. Commission is transparent and fixed, so you always know your cost upfront. Another comparison is with swap fees (overnight interest). While commission is a one-time cost per trade, swap fees accumulate daily if you hold positions overnight. For long-term traders, swap fees may outweigh commission costs.

Commission in forex trading works as a per-lot fee charged by the broker for executing your order. For example, if you trade 1 standard lot of USD/JPY with a $5 commission, you pay $5 when you open the trade and another $5 when you close it. For Thailand traders, this cost is deducted from your account balance in THB if your account is in THB, or in USD otherwise. Some brokers charge a fixed THB amount, such as 150 THB per lot, which makes cost calculation easier. The commission is independent of the spread, so you pay both in an ECN account. Always check if the commission is per side or round turn to avoid surprises.

Example 1: You trade 2 standard lots of EUR/USD with a $6 commission per lot round turn. Total commission = 2 × $6 = $12. If USD/THB is 35, that’s 420 THB. Your spread is 0.2 pips, so total cost is low. Example 2: You use a commission-free account with a 2-pip spread on the same trade. Spread cost = 2 pips × $10 per pip × 2 lots = $40 (1,400 THB). The ECN account saves you 980 THB. For experienced Thailand traders, these savings add up quickly, especially with high volume.

SEC Thailand regulates forex brokers operating in the country. Licensed brokers must adhere to strict rules, including transparent fee disclosure. This means you can see exactly how much commission you are paying per trade. If a broker is not regulated by SEC Thailand, you have no guarantee that the commission structure is fair. Always check the SEC Thailand’s list of approved brokers before depositing funds. Additionally, international brokers regulated by top-tier bodies like FCA or ASIC are also considered safe, but they must comply with Thai laws if they target Thailand traders. For your protection, only trade with brokers that are either SEC Thailand-licensed or have a strong international reputation.

• Compare total cost: Always compare commission + spread for your typical trade size in THB. A broker with low commission but high spread may cost you more.
• Use PromptPay for deposits: PromptPay is free and instant for most Thai banks. Avoid wire transfers that have high fees and slow processing.
• Negotiate for volume discounts: If you trade 50+ lots per month, ask your broker for a reduced commission rate. Many brokers offer tiered pricing.
• Check for inactivity fees: Some brokers charge monthly fees if you don’t trade. This can eat into your capital, especially if you’re a long-term trader.
• Keep records in THB: Track all commission costs in THB for your own P&L analysis. This helps you understand your true profitability.

Understanding commission in forex trading is essential for Thailand traders to manage costs and maximize profits. By comparing commission rates, spreads, and deposit methods like PromptPay, you can choose the most cost-effective broker. Always prioritize SEC Thailand-regulated brokers for transparency and security. Now that you know what commission is, take the next step: open a demo account with a regulated broker, test their commission structure, and calculate your real costs in THB. This will help you trade smarter and keep more of your profits.