Slippage

In one line: The gap between the price you wanted and the price you actually got.

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You click "buy" at 100. You get filled at 100.02. Those 0.02 are slippage.

Why does it happen? Prices move while your order travels. And there may not be enough sellers at exactly your price. One slippage is tiny. A thousand of them add up, like small coins falling out of a hole in your pocket.

In our tests we add slippage on purpose. It is part of our cost model. That is an assumption, not a measurement of your broker. See how we test.

Trading terms

Last checked: 2026-11-04 · Educational, not financial advice.

Education only, not financial advice. No signals. Backtests are hypothetical: real trading can be worse. Past results don't predict future results.