OrderCalcProfit HOW

Example from file: examples/demos/lowlevel/02_trading_operations.go

The OrderCalcProfit() method is used to calculate the potential profit or loss for a trade with specified parameters. It does not open a trade — it only calculates the result when opening and closing a position at the specified prices.

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🧩 Code example

fmt.Println("\n2.2. OrderCalcProfit() - Calculate potential profit/loss")

// Calculate loss from immediate trade closure (spread)
profitReq := &pb.OrderCalcProfitRequest{
    OrderType:  pb.ENUM_ORDER_TYPE_TF_ORDER_TYPE_TF_BUY,
    Symbol:     cfg.TestSymbol,
    Volume:     cfg.TestVolume,
    OpenPrice:  tickData.Ask, // entry price
    ClosePrice: tickData.Bid, // exit price - immediate close at Bid
}
profitData, err := account.OrderCalcProfit(ctx, profitReq)
if !helpers.PrintShortError(err, "OrderCalcProfit failed") {
    fmt.Printf("  Symbol:                        %s\n", cfg.TestSymbol)
    fmt.Printf("  Action:                        BUY\n")
    fmt.Printf("  Volume:                        %.2f lots\n", cfg.TestVolume)
    fmt.Printf("  Price Open (Ask):              %.5f\n", tickData.Ask)
    fmt.Printf("  Price Close (Bid):             %.5f\n", tickData.Bid)
    fmt.Printf("  Potential Profit/Loss:         %.2f (spread loss)\n", profitData.Profit)
}

// Calculate profit if price rises by 10 pips
pipSize := 0.0001 // for EURUSD 1 pip = 0.0001
targetPrice := tickData.Ask + (10 * pipSize)

profitTargetReq := &pb.OrderCalcProfitRequest{
    OrderType:  pb.ENUM_ORDER_TYPE_TF_ORDER_TYPE_TF_BUY,
    Symbol:     cfg.TestSymbol,
    Volume:     cfg.TestVolume,
    OpenPrice:  tickData.Ask,
    ClosePrice: targetPrice,
}
profitTargetData, err := account.OrderCalcProfit(ctx, profitTargetReq)
if !helpers.PrintShortError(err, "OrderCalcProfit (target) failed") {
    fmt.Printf("\n  If price moves +10 pips to %.5f:\n", targetPrice)
    fmt.Printf("  Potential Profit:              %.2f\n", profitTargetData.Profit)
}

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🟢 Detailed Code Explanation

1️. Calculating Immediate Loss Due to Spread

When opening a trade at Ask and closing at Bid, there is an immediate loss equal to the spread size.

OpenPrice: tickData.Ask,
ClosePrice: tickData.Bid,

The method returns a negative profit value (Profit < 0).

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2️. Calculating Profit from 10 Pips Price Movement

Define the pip size and target price:

pipSize := 0.0001
targetPrice := tickData.Ask + (10 * pipSize)

If the price rises by 10 pips (0.0010 for EURUSD), the result will be positive. The method calculates how much profit this movement will generate for the specified volume.

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📦 What the Server Returns

message OrderCalcProfitData {
  double Profit = 1; // Calculated profit or loss in account currency
}

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💡 Example Output

Symbol:                        EURUSD
Action:                        BUY
Volume:                        0.10 lots
Price Open (Ask):              1.08520
Price Close (Bid):             1.08500
Potential Profit/Loss:         -2.00 (spread loss)

If price moves +10 pips to 1.08620:
Potential Profit:              10.00

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🧠 What It's Used For

The OrderCalcProfit() method is used for:

• estimating potential profit or loss without opening a trade;
• testing strategies and risk management;
• calculating P/L in simulations;
• visualizing theoretical results.

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💬 In Simple Terms

OrderCalcProfit() is a profit calculator. It shows how much you will earn or lose if you buy at one price and sell at another. This is a pure calculation, without actual order execution.