What Causes Slippage in Copy Trading
Slippage is the price difference between where the master trade executed and where the slave trade fills. A master buys EURUSD at 1.0850, but by the time the copy executes on the slave, the price is 1.0853 — that's 3 pips of slippage.
Slippage sources:
- Execution delay — Time between master trade and slave trade (the biggest factor)
- Market volatility — Fast-moving markets mean bigger price changes during the delay
- Spread differences — Different brokers have different spreads
- Liquidity — Large lot sizes may not fill at a single price
Tip 1: Use a Faster Copier
The single most effective way to reduce slippage is to reduce execution time. EA-based copiers on a VPS typically execute in 1-5 seconds. Cloud-based copiers like ConnectXCopy execute in under 200 milliseconds — that's 5-25x faster.
At 200ms, price typically hasn't moved. At 3 seconds, it absolutely has — especially during news events or volatile sessions.
Tip 2: Avoid Trading During High Volatility
News releases (NFP, FOMC, ECB) cause rapid price movements. A 200ms delay that normally results in 0 pips of slippage can produce 5-10 pips during a news spike. If possible, avoid having your copier active during major news events, or use wider stop losses to account for the slippage.
Tip 3: Use Appropriate Lot Sizing
Larger lot sizes are harder to fill at a single price, especially on less liquid instruments. If your slave is trading 5+ lots on an exotic pair, expect partial fills and slippage. Use balance ratio or risk-based lot sizing to keep positions appropriately scaled.
Tip 4: Choose Brokers with Good Execution
The slave broker's execution quality directly affects slippage. ECN/STP brokers with tight spreads and fast execution reduce the slave-side slippage. Market maker brokers with wider spreads add to the total slippage.
Tip 5: Enable SL/TP Copying
If the master trade has a tight stop loss, copying SL/TP ensures the slave trade has the same risk parameters even if entry slippage occurs. This prevents a scenario where the slave enters at a worse price but has no stop loss protection.
Tip 6: Trade Liquid Instruments
Major forex pairs (EURUSD, GBPUSD, USDJPY) have deep liquidity and tight spreads, resulting in less slippage. Exotic pairs, small-cap CFDs, and illiquid instruments will always have more slippage on copied trades.
Realistic Expectations
Zero slippage is impossible in copy trading — there will always be a slight delay between master and slave execution. The goal is to minimize it:
| Copier Type | Typical Delay | Typical Slippage |
|---|---|---|
| EA on VPS | 1-5 seconds | 1-5 pips |
| Cloud-based (ConnectXCopy) | Under 200ms | 0-1 pips |
Sub-200ms execution keeps slippage negligible on most trades in normal market conditions.