What is a break of structure?
Structure is the sequence of higher highs and higher lows (uptrend) or lower lows and lower highs (downtrend) visible on the chart. A BoS is the close of a candle through the most recent swing extreme in the direction of the prevailing trend:
- Bullish BoS: in an uptrend, a candle closes above the most recent swing high.
- Bearish BoS: in a downtrend, a candle closes below the most recent swing low.
A wick through the swing without a close is not a BoS — it is a liquidity grab.
BoS vs MSS
A BoS continues the trend. An MSS reverses it. The chart pattern looks similar (a candle closing through a swing), but the trend context is opposite. Misreading the two is the most common SMC mistake.
- Trend up, candle closes above the recent swing high → BoS (continuation).
- Trend up, candle closes below the recent swing low → MSS (reversal).
How to trade a BoS
- Confirm trend direction on your working timeframe.
- Wait for a strong impulsive close through the recent swing in the trend direction.
- Mark the FVG and the last opposing candle (order block) created by that impulse.
- Enter on the retrace into the FVG or order block. Stop beyond the far edge of the order block.
- Target the next obvious liquidity pool in the trend direction.
Why BoS matters
Every continuation entry in SMC depends on a BoS having already printed. Without it, you are trading against the active leg of the trend — the entry zone may exist on the chart, but the institutional flow that should defend it hasn't been confirmed yet.
Backtest BoS recognition
In NQ Replay, scroll any trending session and mark every BoS as it happens. Count the FVGs and order blocks each BoS produces. You will quickly see that most continuation moves don't start until after a clean retrace into the BoS-generated FVG — which is the entry the framework is asking you to wait for.
Frequently asked questions
What does BoS mean in SMC?
BoS stands for Break of Structure — a candle closing through the most recent swing high (in an uptrend) or swing low (in a downtrend), confirming the trend is continuing.
Is a wick a valid BoS?
No — a BoS requires a close beyond the swing, not just a wick. A wick through is treated as a liquidity sweep, not a structural break.
BoS vs MSS — what's the difference?
BoS confirms trend continuation; MSS confirms a reversal. Same chart pattern, opposite trend context — a BoS goes with the prior trend, an MSS goes against it.
Where do I enter after a BoS?
On the retrace into the Fair Value Gap or order block created by the impulsive candle that broke structure. Stop beyond the far edge of that order block; target the next liquidity pool in the trend direction.
Related concepts
- Market Structure Shift (MSS)
The reversal confirmation that follows a clean liquidity sweep.
- Order Block
The last opposing candle before a strong impulse — a reversal zone.
- Power of Three (PO3)
Accumulation, manipulation, distribution — how every session unfolds.
- What is ICT Trading?
The pillar overview — every ICT concept compressed onto one page.