In SMC/ICT, the Fair Value Gap (a 3-candle imbalance) and the Liquidity Void (a zone with no market participants) are two distinct concepts: the FVG marks a temporary price inefficiency, while the Liquidity Void marks a complete absence of trading activity during a rapid impulse. Treating them as the same thing leads to applying identical conviction to zones with very different probabilities, which undermines risk management and prop firm results.
Fair Value Gap (FVG): definition and formation
What is an FVG in SMC/ICT
The Fair Value Gap is the core entry tool of the ICT (Inner Circle Trader) methodology. It identifies a price inefficiency created during a strong directional impulse: the three candles involved do not fully overlap, leaving an untraded zone that institutions and market algorithms are incentivized to revisit.
The underlying logic is mechanical. When large market participants (banks, hedge funds, proprietary desks) execute large positions, they move price in jumps without filling all intermediate orders. This inefficiency becomes a magnet zone, because unfilled orders remain at those levels and market makers eventually need to return to absorb them.
The contrast with classical support and resistance is important: a support level is simply a price where the market bounced before. An FVG marks a specific zone where institutional orders remain unfilled, giving it a quantifiable pull-back probability that can be tested systematically.
How to identify an FVG on the chart
Spot a strong middle candle
Measure the gap between candle 1 and candle 3
Mark the exact zone
Check the FVG status
The most reliable timeframes for ICT FVGs are M15, H1 and H4. Below M5, market noise generates frequent but low-quality imbalances. On Daily and Weekly, FVGs are rare but exceptionally powerful when they form during major impulse moves.
Bullish FVG vs bearish FVG
| Characteristic | Bullish FVG | Bearish FVG |
|---|---|---|
| Formation | Strong bullish middle candle | Strong bearish middle candle |
| Zone | Between high of candle 1 and low of candle 3 | Between low of candle 1 and high of candle 3 |
| Market expectation | Price retests the zone from below | Price retests the zone from above |
| Optimal entry (OTE) | Buy at 50% of the zone or at the bottom | Sell at 50% of the zone or at the top |
| Stop loss | Below the low of the FVG | Above the high of the FVG |
Liquidity Void: definition and difference from FVG
What is a Liquidity Void
A Liquidity Void occurs during the most intense market moves: NFP releases, FOMC decisions, ECB announcements, major geopolitical events. Price sweeps through levels so rapidly that participants cannot place their orders. The result is an entire price zone with no established order book.
According to the FCA (Financial Conduct Authority), the majority of retail CFD accounts lose money, with figures typically ranging from 70% to 80% depending on the broker. This statistic reflects a core reality: most retail traders do not understand how institutional order flow shapes price. Identifying Liquidity Voids means reading the no-liquidity zones that institutions and algorithms will eventually need to revisit.
Why it is different from an FVG
The confusion between FVG and Liquidity Void is common because both describe price inefficiency zones. But their scale, formation logic, and entry precision are fundamentally different.
| Criterion | Fair Value Gap (FVG) | Liquidity Void |
|---|---|---|
| Formation span | Exactly 3 candles | Multiple to dozens of candles |
| Origin | Localized order imbalance | Complete absence of participants during impulse |
| Typical size | A few to a few dozen pips | Dozens to hundreds of pips |
| Fill speed | Fast (hours to a few days) | Slow (days to weeks, sometimes never) |
| Entry precision | High (50% zone well-defined) | Low alone (needs internal FVG) |
| Relationship | Single precise zone | Can contain multiple internal FVGs |
Identifying a Liquidity Void on the chart
On the chart, a Liquidity Void is recognizable by the complete absence of consolidation: one or more large directional candles with no significant wicks, no inside bars, no overlap between consecutive candles. Volume is paradoxically low despite a large price displacement, confirming the absence of active participants in the zone.
A Liquidity Void often contains FVGs
In ICT practice, a large Liquidity Void typically contains several internal FVGs. The optimal strategy is to use the Liquidity Void as macro context (the market will target this zone) and the internal FVGs as precise entry points with a defined stop loss. This multi-level approach consistently outperforms either concept used in isolation, as confirmed by systematic backtesting.
Trading strategy: FVG vs Liquidity Void
FVG entry: timing and stop loss
FVG entries follow a precise protocol in ICT methodology. The first condition is context qualification: a bullish FVG is only tradable when the H4 structure is bullish (BOS confirmed). Trading an FVG against the higher timeframe trend is one of the most common beginner SMC mistakes.
Once context is qualified, the optimal entry is at 50% of the FVG zone (the OTE: Optimal Trade Entry). This position maximizes the risk-to-reward ratio by using the full FVG width as a protective buffer. The stop loss goes just below the FVG low (bullish setup), never inside the zone itself.
Only trade unmitigated FVGs
A mitigated FVG loses its pull. The ICT rule is strict: only trade FVGs that price has not yet revisited since formation. A partially filled FVG (up to ~60%) remains tradable, but a fully filled one is invalidated and should be removed from your active level list immediately.
For a deeper look at FVG strategy, see our complete Fair Value Gap guide and the article on order block and FVG confluence in SMC.
Liquidity Void entry
A Liquidity Void alone is difficult to trade precisely because the zone is too wide for a reasonable stop loss. The recommended approach follows a top-down hierarchy:
- Identify the Liquidity Void on H4 or Daily as a macro target zone.
- Wait for price to enter the Liquidity Void area.
- Drop down to H1 or M15 to find the first unmitigated FVG inside the void.
- Enter on that internal FVG with a precise stop loss below (or above) the FVG zone.
This approach combines the power of the Liquidity Void (signaling that the market will target this area) with the precision of the internal FVG (exact entry with a defined stop loss). See our article on liquidity sweep strategy and backtest results for the broader context of liquidity zones.
Order block and market structure confluence
Maximum confluence in SMC/ICT combines three elements: an FVG or Liquidity Void, an active order block, and a structure confirmation (BOS or CHoCH). The ESMA (European Securities and Markets Authority) documents that retail traders consistently lose more on high-leverage products, largely due to poor entry selection. Multi-factor confluence directly addresses this problem by requiring multiple confirmations before each trade.
The logical sequence: identify dominant H4 direction (BOS confirmed), locate an aligned FVG or Liquidity Void on H1, verify the presence of an adjacent order block, and wait for M15 CHoCH confirmation before entry. See our guide on Break of Structure in SMC/ICT to master structure reading.
Backtesting FVG and Liquidity Void setups
No-code SMC backtest methodology
Backtesting FVG and Liquidity Void setups presents a specific challenge: these setups require contextual judgment (higher timeframe structure, confluence) that classical indicators cannot capture. Without automated backtesting, confirmation bias is inevitable: traders remember retrospectively the setups that worked and forget the failures.
With Backtrex, you can define precise FVG detection rules (3-candle imbalance with configurable minimum gap size), add confluence conditions (active order block, H4 structure), and run an automated backtest across 5 to 10 years of data without writing a single line of code.
Define the FVG setup
Add confluence conditions
Set money management
Run the backtest
Analyze results
Expected results and drawdown
Results vary significantly by instrument, timeframe and market regime. SMC practitioners empirically report FVG fill rates between 60% and 70% on major Forex pairs with a structure filter. This rate improves with additional confluence (order block, kill zone), but setups become rarer.
Liquidity Voids have a high long-term fill rate, but their fill may take weeks, which weighs on drawdown and capital rotation. The critical metric to watch: a setup showing a 65% win rate but a 30% maximum drawdown will not pass any FTMO or MFF evaluation. Backtrex lets you measure these numbers precisely on your target instrument and timeframe before risking any capital.
Free account and guided tour, then a lifetime Pro or Max license paid once; if you buy from the EU, EEA or UK, 14 days to change your mind. See /pricing for current details.
TradingView export with Backtrex
Once your FVG and Liquidity Void setup is validated in backtest, Backtrex generates the corresponding Pine Script (TradingView) or MQL (MetaTrader) code, with a parity guarantee of less than 2% between backtest results and live execution on the target platform. This anti-repainting guarantee is essential: all signals are calculated on the previous confirmed candle, never on the current forming candle, in line with the close[1] rule required by the ICT methodology.
Important Risk Warning
Conclusion
The Fair Value Gap and the Liquidity Void occupy two different levels in the SMC/ICT liquidity hierarchy. The FVG is a precise entry tool (3 candles, defined zone, structured stop loss). The Liquidity Void is a broad macro context zone (an area the market will eventually revisit, often containing multiple internal FVGs). Traders who master both use the Liquidity Void to identify where the market is going, and the internal FVG to define exactly where to enter.
The key is to backtest these setups on your instruments before trading them live: fill rates and win rates vary by pair, timeframe and market regime. Explore Backtrex no-code backtesting features to measure your SMC setup performance across years of historical data.
A Fair Value Gap is a precise imbalance formed by exactly 3 consecutive candles, where the middle candle creates a gap between the wicks of the surrounding candles. A Liquidity Void is a much larger zone where price crossed levels with almost no trading activity, typically driven by a macro catalyst. The key distinction: a Liquidity Void can contain multiple internal FVGs, and those internal FVGs serve as the precise entry points within the broader void.
No. SMC/ICT practitioners estimate that FVGs fill in approximately 60 to 70% of cases on major pairs, depending on the timeframe and market conditions. This rate increases with confluence filters (H4 structure, order block, kill zone timing). Backtrex lets you measure the exact fill rate for your specific instrument with a backtest across 5 to 10 years of data.
A Liquidity Void is identifiable by a complete absence of consolidation: one or more large directional candles with no significant wicks, no inside bars, and no overlap between consecutive candles. Volume is paradoxically low despite a large price displacement. On Daily or H4, it appears as an area where consecutive candles have almost no body or wick overlap at all.
Entering directly on a Liquidity Void is difficult because the zone is too wide for a reasonable stop loss. The recommended approach is to use the Liquidity Void as macro context on H4/Daily and wait for an internal FVG on H1/M15 to form an entry point with a precise stop loss below the FVG zone.
Optimal confluence combines an FVG formed during a kill zone (London open 08:00-10:00 UTC or New York open 13:30-16:00 UTC), aligned with H4 structure (BOS confirmed), adjacent to or overlapping with an order block, and located in a premium or discount zone. This four-factor confluence is what advanced ICT practitioners use to select their highest-probability setups.
With Backtrex, you select the FVG and Order Block blocks in the drag-and-drop interface, define your entry and exit conditions (gap size, stop loss, take profit), and run the backtest. In under 30 seconds you get win rate, maximum drawdown and profit factor across years of historical data, without writing a single line of code.
In ICT practice, priority goes to the setup with the most confluences. An FVG inside a Liquidity Void, confirmed by H4 structure and aligned with an order block, is the ideal setup. Outside a Liquidity Void, an FVG with order block and structure confirmation remains a valid setup. A Liquidity Void without an internal FVG is the least precise of the three and exposes you to an excessively wide stop loss.