Profit and loss the way it is taught in school — and used in shops.
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Profit is the selling price minus the cost price; if it is negative, it is a loss. Profit and loss percentages are worked out on the cost price. These sums appear in CBSE and state-board maths, competitive exams (SSC, banking) and every small business.
Enter the cost and selling price to get the profit or loss and its percentage, or enter one price and a percentage to find the other. The formulas are shown with your numbers.
| Currency | ₹ Indian rupee |
| I know | Cost price and selling price |
| Cost price (CP) | 500 |
| Selling price (SP) | 600 |
| Profit % (negative for a loss) | 20% |
| Number of items | 1 |
| Profit | ₹100.00 |
| Profit % | 20% of the cost price |
| Cost price (CP) | ₹500.00 |
| Selling price (SP) | ₹600.00 |
| As % of selling price | 16.6667% |
₹100.00, 20% of the cost price.
| Currency | ₹ Indian rupee |
| I know | Cost price and selling price |
| Cost price (CP) | 800 |
| Selling price (SP) | 680 |
| Profit % (negative for a loss) | 0% |
| Number of items | 1 |
| Loss | ₹120.00 |
| Loss % | 15% of the cost price |
| Cost price (CP) | ₹800.00 |
| Selling price (SP) | ₹680.00 |
| As % of selling price | -17.6471% |
₹120.00, 15% of the cost price.
Profit ÷ cost price × 100. Bought at ₹500 and sold at ₹600: profit ₹100, profit % = 100/500 × 100 = 20%.
On cost price, unless the question says otherwise. Profit as a share of the selling price is the margin.
SP = CP × 75/100. Enter −25 as the percentage.