Profit and Loss Calculator with Profit %, Markup and Discount

How to use the profit and loss calculator

1. In the first card, enter the cost price (what you paid) and the selling price (what you sold for).
2. Read the profit or loss in rupees and as a percentage of cost price. A green box means profit, red means loss, and blue means break-even.
3. Use the discount calculator to find the final price and your saving from a marked price (MRP) and a discount %.
4. Use the markup and discount card to go from cost price to marked price to selling price and see the final profit % and margin.

Profit, loss and discount formulas

Worked example

A shopkeeper buys a mobile cover for ₹400, marks it 50% above cost and gives a 20% discount.

• Marked price = 400 × 1.5 = ₹600
• Selling price = 600 × 0.8 = ₹480
• Profit = 480 − 400 = ₹80, so profit % = 80 ÷ 400 × 100 = 20%

Shortcut: net effect = +50% then −20% = 50 − 20 − (50 × 20 ÷ 100) = 20% profit.

Exam tips for SSC CGL, bank and CSAT questions

• Same selling price, same % gain and loss: if two items are sold at the same price, one at x% profit and one at x% loss, the overall result is always a loss of x² ÷ 100 %. At 10% each, that is a 1% loss.
• False weights: a trader who sells at cost price but gives 900 g for 1 kg makes a profit of 100 ÷ 900 × 100 = 11.11%.
• Work in fractions: 25% profit means SP = 5/4 of CP, and 20% loss means SP = 4/5 of CP.

Common mistakes

• Calculating profit % on the selling price. That is margin, not profit %.
• Taking discount on the cost price. Discount is always on the marked price.
• Adding successive discounts directly.

Frequently asked questions

How is profit percentage calculated?

Profit % = (Selling Price − Cost Price) ÷ Cost Price × 100. Profit and loss percentages are always calculated on the cost price unless a question says otherwise, so buying at ₹800 and selling at ₹1,000 is a 25% profit.

How is loss percentage calculated?

Loss % = (Cost Price − Selling Price) ÷ Cost Price × 100. Buying at ₹1,000 and selling at ₹800 is a 20% loss.

What is the difference between markup and margin?

Markup is profit as a percentage of cost price; margin is profit as a percentage of selling price. A 25% markup equals a 20% margin, because ₹25 profit on a ₹100 cost is 20% of the ₹125 selling price.

How do I find the selling price after a markup and a discount?

Multiply the cost price by (1 + markup ÷ 100) to get the marked price, then by (1 − discount ÷ 100) to get the selling price. A ₹1,000 item marked up 25% and sold at 10% off sells for ₹1,125, a 12.5% profit.

How do two successive discounts combine?

Two successive discounts of a% and b% equal a single discount of a + b − (a × b ÷ 100). So 20% followed by 10% is a 28% discount, not 30%.

Is this calculator free?

Yes. It is completely free with no sign-up, and all calculations happen in your browser.