What Is Break of Structure?
A Break of Structure (BOS) occurs when price breaks beyond a previous swing high in an uptrend (confirming continuation) or below a previous swing low in a downtrend (confirming continuation). In Smart Money Concepts (SMC), BOS is used to confirm that the existing trend is intact and that price is making higher highs/higher lows (uptrend) or lower highs/lower lows (downtrend).
How Break of Structure Works
BOS differs from a Change of Character (CHoCH): BOS confirms the existing trend direction, while CHoCH signals a potential reversal. In an uptrend, breaking above a swing high is BOS (trend continues), while breaking below a swing low is CHoCH (trend may be reversing). This distinction helps traders stay aligned with the trend and recognize when the trend is losing momentum.
Why It Matters for Traders
BOS provides objective, measurable confirmation of trend direction. Instead of relying on subjective pattern interpretation, traders can mark swing highs and lows and wait for a definitive break to confirm bias. After a confirmed BOS, the optimal entry is on the pullback to the zone where the break originated (the order block), providing a high-probability entry with a clear invalidation level.
