IPDA Look Back Calculator
Free Ipda look back Calculator for ict & smc tools. Enter your numbers to see returns, costs, and optimized scenarios instantly.
IPDA Look Back Calculator
Calculator
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Formula: Position (%) = (Current Price - Range Low) / (Range High - Range Low) x 100
Worked example — Position: Neutral (50.0%) | All ranges at equilibrium | Watch for directional displacement
Formula
Position (%) = (Current Price - Range Low) / (Range High - Range Low) x 100
The IPDA position is calculated by determining where the current price sits as a percentage within each look-back range. Equilibrium is the exact midpoint, so readings above 50% sit in the upper half of the range and readings below 50% sit in the lower half. The zone label is stricter than that split: a reading is called Premium only above the 75% mark and Discount only below the 25% mark, with the band between the two treated as equilibrium. The OTE zone is the 62-79% Fibonacci retracement of the range.
Worked Examples
Example 1: EUR/USD Discount Zone Buy Setup
Problem:EUR/USD is at 1.0850. The 20-day range is 1.0750-1.0950, the 40-day range is 1.0680-1.1020, and the 60-day range is 1.0600-1.1100. Analyze the IPDA position.
Solution:20-Day: Price at 50.0% (Equilibrium), Range = 200 pips 40-Day: Price at 50.0% (Equilibrium), Range = 340 pips 60-Day: Price at 50.0% (Equilibrium), Range = 500 pips Average position: 50.0% across all ranges OTE Zone (20-day): 1.0874 - 1.0908
Result:Position: Neutral (50.0%) | All ranges at equilibrium | Watch for directional displacement
Example 2: GBP/USD Premium Zone Sell Setup
Problem:GBP/USD is at 1.2780. The 20-day range is 1.2650-1.2800, the 40-day range is 1.2580-1.2820, and the 60-day range is 1.2500-1.2850. Where is price in the IPDA framework?
Solution:20-Day: Price at 86.7% (Premium), Range = 150 pips 40-Day: Price at 83.3% (Premium), Range = 240 pips 60-Day: Price at 80.0% (Premium), Range = 350 pips Average position: 83.3% — Deep premium across all ranges Bias: Bearish — Look for sell setups on retracement
Result:Position: Premium (83.3%) | Bearish bias | Sell on OTE retracements toward range highs
Frequently Asked Questions
What is the IPDA look-back period and how is it used in ICT trading?
The Interbank Price Delivery Algorithm (IPDA) look-back period is a concept from the Inner Circle Trader (ICT) methodology that analyzes price ranges over 20, 40, and 60 trading day windows. These specific periods are believed to represent the intervals that institutional market makers and interbank dealers use to reference previous price delivery when determining current fair value and future price targets. By examining where price currently sits relative to these historical ranges, traders can identify whether the market is in a premium or discount condition and anticipate where the algorithm may seek to deliver price next, targeting old highs, old lows, or liquidity pools.
How do the 20, 40, and 60 day look-back periods differ in significance?
Each IPDA look-back period serves a different analytical purpose in the ICT framework. The 20-day range represents the most recent short-term price delivery cycle, corresponding roughly to one trading month, and is most relevant for short-term swing traders. The 40-day range captures approximately two months of price action and provides a medium-term perspective on institutional price delivery patterns. The 60-day range, spanning about three months or one quarter, reveals the longer-term algorithmic framework within which the shorter cycles operate. When all three ranges align in the same directional bias, the trading signal is considered stronger. Divergence between timeframes can indicate potential reversals or consolidation phases.
What are premium and discount zones in IPDA analysis?
Premium and discount zones divide each IPDA range into areas where price is considered expensive or cheap relative to the range equilibrium. The equilibrium point is the exact midpoint of the range. Anything above that midpoint is the expensive half, where smart money is expected to be selling or distributing positions, and anything below it is the cheap half, where institutions are expected to be buying or accumulating. IPDA Look Back Calculator does not label every reading above the midpoint as premium, however: it keeps a neutral band around equilibrium and reserves the premium and discount labels for the outer quarters of the range, as the question on that band explains below. In ICT methodology, traders seek to sell in premium zones and buy in discount zones, aligning their entries with the anticipated institutional order flow and the algorithm tendency to rebalance price toward the equilibrium of a higher timeframe range.
What is the Optimal Trade Entry (OTE) zone and how does it relate to IPDA?
The Optimal Trade Entry (OTE) zone is a concept from ICT methodology that identifies the ideal retracement level for entering trades in the direction of the prevailing trend. The OTE zone lies between the 62 percent and 79 percent Fibonacci retracement levels of a significant price swing. Within the IPDA framework, the OTE zone is calculated relative to each look-back period range. When price retraces into the OTE zone of an IPDA range while remaining in the discount (for longs) or premium (for shorts) of a higher timeframe range, it provides a high-probability entry point. The OTE concept combines the Fibonacci-based entry precision with the institutional price delivery framework of IPDA analysis.
How should traders combine IPDA analysis with other ICT concepts?
IPDA look-back analysis is most effective when combined with other ICT concepts to create a comprehensive trading framework. Traders should first establish the higher timeframe directional bias using the 60 and 40 day ranges, then look for entry opportunities on the 20-day range. Key confluence factors include order blocks (areas of institutional supply and demand), fair value gaps (imbalances in price delivery that the algorithm seeks to fill), liquidity pools above old highs and below old lows, and the time of day when institutional activity peaks during the London and New York sessions. Volume analysis and market structure shifts on lower timeframes can further refine entries within the IPDA framework for higher probability trade setups.
How do I collect the correct 20, 40 and 60 day highs and lows to enter here?
Work from daily candles and count trading days rather than calendar days, so weekends and market holidays are skipped. The high is the highest wick and the low is the lowest wick printed inside that window, counted back from the current session. All three windows are rolling: as each new daily candle closes the oldest one drops out and the boundaries can shift, so the levels need refreshing regularly instead of being marked once and left on the chart for a month.
Why is there a neutral band around equilibrium instead of a straight premium/discount split at 50 percent?
The exact midpoint of a range is equilibrium, or fair value. This tool then places a neutral band a quarter of the range either side of it, so only prices in the top or bottom quarter of the window are labelled premium or discount, and everything between the 25 and 75 percent marks reads as equilibrium. The point is to stop marginal readings hovering near the midpoint being traded as though they were deep premium or discount, where the directional edge is genuinely clearer.
Which look-back window should win when the 20-day and 60-day readings disagree?
The longer window carries the higher timeframe narrative, so treat the 60-day reading as the draw and the 20-day as the tactical picture. Price sitting in 20-day discount while the 60-day range still shows premium usually signals a pullback inside a larger distribution rather than genuine accumulation, which makes longs there counter-trend and worth sizing and targeting accordingly. Alignment across all three windows is the high-conviction condition; outright conflict is a reason to wait or halve the risk.
What is a draw on liquidity, and how do the look-back boundaries reveal it?
In ICT terms resting orders cluster beyond obvious swing points: buy stops above old highs form buy-side liquidity, sell stops below old lows form sell-side liquidity. The high and the low of each look-back window are precisely those obvious points, which is why price delivery is expected to reach toward them rather than politely respect them. Reading the range boundaries as a target — the draw on liquidity — instead of as a wall is the practical shift this framework asks for.
What is the difference between an IPDA range and classical support and resistance?
Classical support and resistance is discretionary: you draw a line where price reacted before and judge it by how many touches it survived. An IPDA range is mechanical, a fixed rolling window that yields one high, one low and one equilibrium with no judgement involved. It also inverts the interpretation, since the boundaries mark where liquidity rests and is likely to be taken, whereas support and resistance assumes those levels hold. The two can coexist on a chart, but they answer different questions.
References
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer · Editorial policy
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