A profit calculation can be shown on a per-item basis. This is helpful when adjusting the price or applying a discount. To correctly calculate the profit, the item’s cost must be entered by following these steps: Select the line item from the right side of the sales areaTap the info button located at the left side of middle section of the editing box. The profit and the margin will appear.The profit amount is the difference between the sales price and the cost. For example: $10.00 (sales price) - $6.00 (cost) = $4.00 (profit)The margin indicates the percentage of the profit compared to the sales price. A higher margin indicates a higher profit.With the example above the margin is 40%. In other words, 40% of the sales price is profit.