Forex trading involves the use of various technical indicators and tools to analyze the market and identify potential trading opportunities. One important concept that traders need to be aware of is repainting. Repainting occurs when a trading indicator or tool changes its previous signals based on new price action data. This can be misleading and can cause traders to make poor trading decisions.
What is Repainting?
Repainting is a term used in forex trading to describe a situation where a trading indicator or tool changes its previous signals based on new price action data. This can be a problem for traders because it can make it difficult to accurately analyze the market and make informed trading decisions. Repainting indicators give the illusion of accurate signals by using future price data to generate signals, which can change over time as new price data becomes available. In other words, a repainting indicator may initially generate a signal that looks profitable, but as the price continues to move, the indicator may change its signal, making it appear as if the initial signal was incorrect. This can cause traders to enter or exit trades at the wrong time, resulting in losses. Therefore, it is important for traders to be aware of repainting indicators and how they can affect their trading strategies.
How Does Repainting Occur?
Repainting occurs in forex trading when a trading indicator or tool changes its previous signals based on new price action data. This can happen in a number of ways, depending on the specific indicator or tool being used. Some repainting indicators may use future price data to generate signals, which can change over time as new price data becomes available. For example, a moving average crossover strategy might use a shorter-term moving average to signal a buy or sell when it crosses over a longer-term moving average. However, as the price continues to move, the crossover point may shift, and the signal may change.
Another way that repainting can occur is when an indicator or tool is based on complex mathematical formulas that require future price data to generate signals. In such cases, the indicator may give the appearance of generating accurate signals, but it may actually be changing its signals based on future price data that is not yet available.
It is important for traders to be aware of the potential for repainting when using indicators and tools in their trading strategies. This can help them avoid making trading decisions based on false signals, which can ultimately result in losses. Traders may want to focus on using non-repainting indicators or tools and relying on price action and chart patterns to make more accurate trading decisions.
How to Identify Repainting Indicators
Identifying repainting indicators in forex trading can be tricky, but there are a few key signs to look out for. Here are some tips to help you identify repainting indicators:
- Backtesting: One way to identify whether an indicator is repainting is to conduct backtesting. This involves using historical data to test the accuracy of an indicator over a period of time. If the indicator changes its signals based on new price data, it will show different results in backtesting than in live trading.
- Forward Testing: Another way to identify repainting indicators is through forward testing. This involves testing the indicator in a live trading environment with a small amount of capital before committing more funds to the strategy. If the indicator changes its signals based on new price data, you may notice discrepancies between your forward testing results and your backtesting results.
- Watch for sudden changes: If an indicator changes its signal suddenly, without any obvious reason in the market, it could be a sign that it is repainting. Pay attention to sudden changes in the indicator’s signals and compare them to changes in the market to determine whether they are accurate or not.
- Check the indicator’s code: If you have programming knowledge, you can check the code of an indicator to determine whether it is repainting or not. You could look for formulas that require future price data to generate signals, as these are likely to be repainting indicators.
By using these methods, traders can identify repainting indicators and avoid making trading decisions based on false signals. Remember that non-repainting indicators are typically more reliable and can help you make more informed trading decisions.
The Risks of Repainting
Repainting indicators in forex trading pose several risks to traders. Here are some of the most significant risks associated with repainting indicators:
- False signals: The most significant risk of repainting indicators is that they can generate false signals, which can lead to poor trading decisions. As the indicator changes its signals based on new price data, it can be difficult to accurately analyze the market and identify profitable trading opportunities.
- Overtrading: Repainting indicators can cause traders to overtrade, which can lead to significant losses. If an indicator generates multiple signals that change frequently, traders may be tempted to enter and exit trades too frequently, leading to increased transaction costs and reduced profitability.
- Delayed reaction: Repainting indicators can also cause a delayed reaction to market changes. Since the signals generated by the indicator are based on future price data, they may not accurately reflect changes in the market until it is too late. This can cause traders to enter or exit trades too late, resulting in missed opportunities and losses.
- Confusion: Repainting indicators can also be confusing for traders, as they may appear to generate accurate signals initially but change over time. This can cause traders to second-guess their trading decisions and make poor choices based on conflicting signals.
Conclusion
Overall, repainting indicators can lead to significant losses for forex traders. To avoid these risks, traders could focus on using non-repainting indicators and relying on price action and chart patterns to make their trading decisions. Additionally, traders could test their trading strategies thoroughly before committing significant capital to them.

Self-confessed Forex Geek spending my days researching and testing everything forex related. I have many years of experience in the forex industry having reviewed thousands of forex robots, brokers, strategies, courses and more. I share my knowledge with you for free to help you learn more about the crazy world of forex trading! Read more about me.