The 3Commas DCA Bot is a TradingView strategy script that reproduces the behaviour of a 3Commas DCA (Dollar-Cost-Averaging) bot directly on your chart: it opens a deal when your indicator conditions line up, adds safety orders as price moves against you to improve the average entry, and closes the whole deal at a take-profit — with optional stop-loss, trailing take-profit, and breakeven protection. You use it inside TradingView to design and backtest a DCA configuration before running it live.

What this tool is for This is a backtesting and configuration script. It lets you see how a given DCA setup would have behaved on historical data. It does not place live orders by itself. Backtest results are historical and are not a promise of future performance.

The strategy appears as an overlay on the price chart, and a Strategy Tester panel opens at the bottom with the backtest results.

To change any setting later, hover over the strategy name on the chart and click the gear / Settings icon. The settings dialog has two tabs that matter:

Use this to focus the test on a specific market period (a bull leg, a chop range, a crash) instead of the whole history.

A single bot trades one direction, exactly like one 3Commas DCA bot:

If you want both directions, run two copies of the strategy — one LONG, one SHORT.

This is the "when do we open a deal" block — the equivalent of the 3Commas Deal start condition builder. There are five condition slots. A deal opens only when every enabled condition is true at the same time: they are combined with AND.

AND logic With RSI < 30 in Condition 1 and (say) a higher-timeframe trend filter in Condition 2, the deal opens only on the bar where both hold. Add more enabled conditions to make entries stricter; disable them to make entries looser.

MACD — line and zero-cross gate A long-style MACD entry in 3Commas requires the MACD line to be below zero and to cross up through its signal line. This bot reproduces that: - Crossing Up → the MACD histogram crosses zero (the line crosses its signal) and the MACD line is below the Signal value (use 0). Crossing Down mirrors it (line above the Signal value). - Greater than / Less than → compares the MACD line directly against the Signal value.

Stochastic — %K vs level, or %K crossing %D - Greater than / Less than → compares the smoothed %K against the Signal value (e.g. %K < 20 for oversold). - Crossing Up / Crossing Down → %K crosses %D (Length 3 sets the %D smoothing).

Moving Average — two-MA crossover Length 1 is the fast MA, Length 2 the slow MA, and the compared value is fast − slow, so use Signal value 0: - Greater than 0 → fast above slow (bullish trend filter). - Less than 0 → fast below slow (bearish trend filter). - Crossing Up 0 → fast crosses above slow (a bullish entry event). - Crossing Down 0 → fast crosses below slow (a bearish entry event). Set MA type to SMA or EMA.

Super Trend and Parabolic SAR — price vs the line Both return price minus the line, so pair them with Crossing Up / Crossing Down and Signal value 0: crossing up 0 is a bullish flip, crossing down 0 is a bearish flip.

Super Trend is an extra Super Trend is not one of the native 3Commas deal-start indicators — it is included here as a bonus filter. The 3Commas-native set is RSI, Ultimate Oscillator, MACD, Stochastic, Bollinger %B, CCI, MFI, ADX, Moving Average, and Parabolic SAR.

Each condition can run on its own timeframe via the Timeframe box. A higher-timeframe condition only updates when that timeframe's candle closes — so on a 1-minute chart, a 3-minute RSI steps every 3 minutes. This matches how 3Commas evaluates conditions on closed candles and prevents look-ahead.

Once a deal is open, safety orders average the position as price moves against you. This block defines the ladder.

Both modes use the same Deviation to open SO1 and Deviation step multiplier inputs; only the spacing formula differs. Using the defaults (deviation 1%, step multiplier 2, 5 safety orders), the cumulative distance of each safety order from the base price is:

Arithmetic is the cumulative-additive ladder 3Commas uses — it spreads safety orders far apart at the deep end. Geometric compounds a constant percentage step and stays much tighter. They are almost identical when the step multiplier is 1 and diverge as it grows. Default is Arithmetic.

Reading the ladder on the chart When a deal is open, each safety order is drawn as a grey SO1…SOn label at its limit price, so you can see the whole grid.

With Average Order anchoring, every safety order that fills lowers the average entry (for a long) and pulls the take-profit price down with it, so the deal can complete on a smaller bounce.

The stop-loss must sit beyond the averaging grid A DCA stop-loss placed inside the safety-order ladder would trigger before the deepest safety orders can fill — which the DCA logic does not allow. If your Stop loss (%) is smaller than the deepest safety order's deviation, the strategy stops opening new deals and shows a red banner at the top of the chart telling you the minimum stop-loss value to use.

With the default arithmetic ladder the deepest safety order sits at −31%, so the minimum stop-loss is about 31.04%. Switching to the tighter geometric ladder lowers that minimum to about 9.65%. Either raise the stop-loss beyond the grid, or tighten the ladder, to clear the warning.

These are set in the Properties tab of the settings dialog, not the Inputs tab:

Set these to match the exchange you intend to trade so the backtest result is realistic.

While a deal is open the script draws four lines:

Grey SO1…SOn labels mark each safety-order limit price.

This guide describes the 3Commas DCA Bot TradingView script as configured in its published version. If a field on your screen does not match this guide, you may be on a different version of the script.