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Calculate a simulated result after costs and an illustrative expectancy. Formulas and assumptions are visible.
Hypothetical instrument. Entry and exit use price points. Commission and result use the same currency unit; you define quantity and the currency value per point.
Use a decimal point or comma, with no thousands separators. Quantity: positive whole number; prices and costs: zero or more; value per point: greater than zero.
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Net = (exit − entry) × direction × quantity × value per point − 2 × commission × quantity − 2 × slippage × quantity × value per point.
Gain, loss and cost must use the same unit: currency or R (initial risk). The result is per trade in that unit. The frequency is an assumption, not a demonstrated future probability.
Use a decimal point or comma, with no thousands separators. Wins: 0 to 100; gain, loss and cost: zero or more.
Expectancy = p × average gain − (1 − p) × average loss − average cost. It does not include every effect of sequence, liquidity or market changes.