Slippage

What Is Slippage in Forex?

Slippage occurs when a trade is executed at a different price than the price the trader expected or requested. It is the gap between the intended execution price and the actual fill price. Unlike a requote, where the broker asks the trader to accept a new price, slippage happens automatically — the order is filled without prior notification at whatever price is available when the order reaches the market.

Slippage is a natural characteristic of live financial markets and is not inherently negative. It can be positive (filled at a better price than expected), negative (filled at a worse price), or zero (filled exactly at the requested price). However, studies by various brokers and regulators show that negative slippage tends to be slightly more common than positive slippage in most retail trading environments.

Causes of Slippage

Slippage arises from several market dynamics:

• Market volatility: During major economic releases (NFP, CPI, central bank decisions), prices can gap multiple pips within milliseconds, making the requested price unavailable
• Low liquidity: In exotic pairs or during off-peak hours, there may not be enough volume at the requested price to fill the order
• Order size: Large orders may exhaust available liquidity at the best price, requiring partial fills at progressively worse prices
• Execution latency: The time between clicking "execute" and the order reaching the liquidity provider allows prices to change
• Gap openings: When the market opens on Sunday evening, prices may gap significantly from Friday's close, causing substantial slippage on pending orders

Types of Slippage

Understanding the different forms of slippage helps traders manage expectations:

• Market order slippage: The most common type, occurring when a market order is filled at the next available price rather than the displayed price
• Stop-loss slippage: When a stop-loss triggers but the next available price is beyond the stop level — this can be significant during gaps
• Limit order slippage: Technically, limit orders should only experience positive slippage (filled at a better price) or no fill at all, but some brokers may fill them at worse prices in certain conditions

How to Minimize Slippage

Traders can take several steps to reduce slippage impact:

• Trade during peak liquidity hours (London/New York overlap, 8 AM - 12 PM ET)
• Avoid trading during major news releases or wait for initial volatility to settle
• Use limit orders instead of market orders when possible
• Choose ECN/STP brokers with access to deep liquidity pools
• Set slippage tolerance in platform settings (acceptable deviation from requested price)
• Trade liquid major pairs (EUR/USD, GBP/USD) rather than exotic pairs

Key Points

• Slippage is the difference between expected and actual execution price
• It can be positive, negative, or zero — it is a normal market phenomenon
• Major news events and low liquidity periods cause the most significant slippage
• Stop-loss slippage during market gaps can result in losses exceeding the intended stop level
• Limit orders provide better slippage protection than market orders