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Forex slippage explained: why the filled price differs from the signal

A worked example of price movement between signal, order request and execution—and what copy traders should verify.

RESEARCH NOTE · 2026-11-08 · 2 MIN READ

Slippage is the difference between an expected execution price and the actual fill. It can occur in fast markets, low liquidity or when the order must travel between systems. The direction and scale of slippage depend on market and order conditions.

A simple pip example

Suppose a signal says buy EUR/USD at 1.10000, but the trade fills at 1.10030. The entry is three pips higher. At an illustrative $10 pip value, that difference corresponds to about $30 for one standard lot before other fees. Another account copying the same signal could receive a different execution price.

Order type changes the trade-off

A market order prioritizes execution but cannot guarantee the initially displayed price. A limit order sets a price boundary but may remain unfilled. Stop orders can be triggered and then execute at a worse price in a gap, depending on the broker’s order handling. The platform’s official execution policy is the controlling reference.

Copy and automated strategies introduce timing

When a provider trades first, the copying infrastructure must detect the event and submit another order. That delay, combined with different brokerage conditions, means historical provider returns should not be presented as a copier’s assured outcome.

  • Signal timestamp vs copied-order timestamp.
  • Requested price vs fill price.
  • Spread at both events and currency pair liquidity.
  • Failed, partially filled or rejected orders.

What an honest review needs

Without actual live trade records from comparable accounts, we cannot assign a credible slippage score. We can explain mechanics and publish sourced execution policies, clearly distinguishing them from measurement.

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Risk reminder: Trading leveraged CFDs may result in substantial losses. Past strategy results do not predict your own future results. This guide is for education and is not personalized investment advice.