What is a Break of Structure (BOS)?

Learning Objectives

Understand what a Break of Structure (BOS) is.
Identify bullish and bearish BOS.
Differentiate BOS from CHoCH.
Know how BOS fits into your trading plan.

Definition

A Break of Structure (BOS) occurs when price breaks above a previous swing high during an uptrend or below a previous swing low during a downtrend.

This break confirms that buyers or sellers remain in control of the market and that the existing trend is likely to continue.

Why BOS Matters

Many traders make the mistake of entering trades based on opinions or predictions. A BOS removes much of that guesswork by allowing price to confirm the market's intention first.

Professional traders often wait for a confirmed Break of Structure before looking for entries on lower timeframes.

Bullish BOS

In an uptrend, price forms higher highs and higher lows. When price breaks above the previous swing high, a Bullish BOS is created, confirming continuation of the trend.

Bearish BOS

In a downtrend, price forms lower highs and lower lows. When price breaks below the previous swing low, a Bearish BOS is confirmed.

How to Identify a Valid BOS

✅ A clear trend already exists.

✅ Price breaks a significant swing point.

✅ The break shows strong momentum (displacement).

✅ The break closes beyond the structure.

Common Mistakes

Trading every breakout as a BOS.
Ignoring higher timeframe market structure.
Entering before the candle closes.
Confusing BOS with CHoCH.

Key Takeaways

BOS confirms continuation of an existing trend.
Always analyse the higher timeframe first.
Wait for confirmation before entering.
Combine BOS with Liquidity and Order Blocks.