What is Slippage in Forex? A Complete Guide for Thailand Traders (2026)

What Exactly Is Slippage?

Slippage occurs when your market order executes at a different price than quoted. This usually happens during high volatility (news events, economic releases) or low liquidity (overnight sessions, thin markets). For Thailand traders, slippage can be positive (you get a better price) or negative (you get a worse price). Most of the time, it’s negative, especially in fast-moving markets.

How Slippage Works in Practice

Imagine you trade USD/THB. You place a market order to buy at 35.00, but due to a sudden Bank of Thailand announcement, the price jumps to 35.05 before your order fills. You now pay 5 pips more per unit. On a 0.1 lot (10,000 units), that’s 5,000 THB extra cost. Slippage is not a broker error—it’s a market reality.

Why Slippage Matters for Thailand Traders

Thailand traders often trade during Asian hours when liquidity is lower than London or New York sessions. This increases slippage risks. Additionally, if you use PromptPay for deposits, you might feel pressured to enter trades quickly after funding, increasing the chance of slippage. Experienced Thailand traders know to use limit orders to control entry prices.

Slippage and THB-Denominated Accounts

If your trading account is in THB, slippage in USD pairs like USD/THB directly impacts your profit/loss. Currency conversion adds another layer of cost. Some brokers offer THB-denominated accounts, which can reduce conversion-related slippage. Always check your account currency and trade size to estimate potential slippage in baht.

For Thailand traders, slippage has a unique local dimension. Many deposit funds via PromptPay, Bank Transfer, or Skrill. PromptPay deposits are usually instant, allowing you to trade quickly—but that speed can lead to rushed entries during volatile periods. Bank transfers take longer, which may cause you to miss price levels, resulting in slippage when you finally place your order. Skrill deposits are moderate speed but may incur fees.

SEC Thailand oversees forex brokers operating in the country. While SEC Thailand does not directly regulate slippage, it enforces fair execution standards. Brokers licensed by SEC Thailand are expected to provide transparent order execution. Thailand traders should verify their broker’s regulatory status and read their execution policy to understand how slippage is handled. Some brokers offer ‘no slippage’ guarantees on certain account types, but these often come with wider spreads. Always weigh the trade-off between slippage and spread costs.

1. Choose a broker with fast execution
   For Thailand traders, select a broker that uses ECN/STP technology. These brokers typically have lower slippage because they route orders directly to liquidity providers. Check if the broker is regulated by SEC Thailand or other reputable authorities.
2. Use limit orders instead of market orders
   Limit orders let you specify the exact price you want to enter or exit. This eliminates slippage risk. However, your order may not fill if the market doesn’t reach your price. For Thailand traders, this is especially useful during Bank of Thailand news events.
3. Avoid trading during major news releases
   Economic data like US NFP, Fed decisions, or Bank of Thailand rate changes cause extreme volatility. Slippage is highest during these times. If you must trade, use pending orders with a buffer of 10-20 pips to account for slippage.
4. Monitor your broker’s slippage policy
   Some brokers disclose their average slippage statistics. Thailand traders should review these reports. Also, test your broker with small trades first to see real-world slippage. If you experience consistent negative slippage, consider switching brokers.

Slippage vs. Spread: Spread is the cost of entering a trade (e.g., 2 pips for EUR/USD). Slippage is an additional cost that varies. For Thailand traders, a broker with a 1-pip spread but frequent 5-pip slippage is worse than a broker with a 2-pip spread and rare slippage. Slippage vs. Requote: Requote is when a broker refuses your price and offers a new one. Slippage is when the order fills at a different price automatically. Requotes are more common with market maker brokers, while slippage is typical with ECN brokers. Thailand traders should understand these differences to choose the right broker for their style.

Slippage happens when your order is executed at a different price than expected due to market movement or latency. For a Thailand trader using PromptPay to deposit 50,000 THB into a broker, imagine you want to buy EUR/THB at 38.50. You place a market order, but a sudden news spike pushes the price to 38.55 before your order fills. You now pay 5 pips more. On a 0.1 lot (10,000 units), that’s 500 THB extra. This is negative slippage. Positive slippage can occur if the price moves in your favor, but it’s less common. The speed of your internet connection, broker server location, and market liquidity all affect slippage. Thailand traders with slower connections may experience more slippage.

Example 1: Khun Somsak trades USD/THB during the Bank of Thailand rate decision. He places a market order to sell at 35.20. The decision is hawkish, and USD/THB jumps to 35.30 within seconds. His order fills at 35.30, causing a 10-pip negative slippage. On a 0.5 lot, that’s 5,000 THB loss due to slippage alone.

Example 2: Khun Malee uses a limit order to buy GBP/THB at 44.00. The market drops to 44.00, fills her order exactly—no slippage. She avoids negative slippage by using a limit order instead of a market order. This technique is especially useful for Thailand traders who cannot monitor charts 24/7.

Example 3: A Thailand trader deposits 100,000 THB via PromptPay and immediately enters a trade on EUR/USD during the US NFP release. The high volatility causes 15-pip slippage, costing 1,500 THB. Waiting 30 minutes after the release would have reduced slippage significantly.

SEC Thailand (Securities and Exchange Commission) regulates forex brokers that operate within Thailand. While SEC Thailand does not have specific rules on slippage, it enforces general principles of fair and transparent execution. Brokers must disclose their order execution policy and handle client orders fairly. Thailand traders should only use brokers that are licensed by SEC Thailand or recognized international regulators. If a broker violates execution standards, you can file a complaint with SEC Thailand. Always verify a broker’s license on the SEC Thailand website before depositing funds. This protects you from unscrupulous brokers that may exploit slippage.

• Trade during high liquidity hours: For Thailand traders, the overlap between Asian and London sessions (15:00-18:00 ICT) offers the best liquidity, reducing slippage.
• Use a VPS for automated trading: If you use Expert Advisors (EAs), a VPS near your broker’s server reduces latency and slippage. Many Thailand-based VPS providers offer low-cost options.
• Set slippage tolerance in your platform: MetaTrader 4 and 5 allow you to set maximum slippage in pips. Use this to limit negative slippage. Start with 5-10 pips for major pairs.
• Diversify your deposit methods: Keep PromptPay for instant deposits, but also have a Skrill or Bank Transfer option for larger sums. This flexibility helps you avoid rushing into trades.
• Backtest with slippage included: When testing strategies, add a slippage assumption of 1-2 pips per trade. This gives you a realistic expectation for Thailand market conditions.

Slippage is an unavoidable part of forex trading, but with the right knowledge, Thailand traders can minimize its impact. Use limit orders, trade during liquid hours, and choose brokers regulated by SEC Thailand. Remember that PromptPay deposits give you speed, but don’t let that rush you into poor entries. Always test your broker’s execution with small trades first. By understanding slippage, you can trade more confidently and protect your THB capital. Ready to start? Compare regulated brokers on comparebroker.io and find one that suits your needs.