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In Forex, TMA usually refers to the Triangular Moving Average —
a type of moving average that smooths price more strongly than SMA or EMA.
What is TMA (Triangular Moving Average)?The Triangular Moving Average (TMA) is a moving average that applies double smoothing to price data:
- First, it takes a Simple Moving Average (SMA).
- Then, it takes another SMA of that first SMA.
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Why is it called “Triangular”?Because the weighting of the price data forms a triangle shape:
Prices near the middle of the period get more weight.
Prices at the start and end get less weight.
Example for a 7-period TMA weight distribution:
1, 2, 3, 4, 3, 2, 1
This “triangle” of weights gives the name Triangular Moving Average.
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What TMA is used forTrend direction
Smoother signals with less noise
Support/resistance dynamic levels
Filtering out fake volatility spikes
Traders like it because it looks cleaner than many other moving averages.
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Important: Centered TMA vs Regular TMAIn Forex forums (especially Forex-Station), TMA often refers to Centered TMA, which recalculates historically because it uses future bars for smoothing.
Regular TMA = normal triangular MA (does not repaint)
Centered TMA = smoothed and shifted; recalculates (many people call it “repainting”)
Mladen explained:
“Centered TMA recalculates; that’s not repainting. It’s just math that uses future data.”
This is why many TMA indicators appear to “move” historically.
