What is the Profit Calculator?
The Profit Calculator computes the absolute profit or loss from a transaction and the corresponding profit margin percentage. Traders, resellers, and small business owners use it to quickly evaluate the financial outcome of buying and selling goods.
How does it work?
Enter the price you paid to acquire the item and the price you sold it for. The calculator subtracts the buying price from the selling price to find the profit. It also divides the profit by the selling price and multiplies by 100 to show the profit margin percentage.
Formula
Profit = selling price - buying price, Margin = (profit / selling) x 100
How the calculation works
How the calculation works
- 1Enter the price you paid to acquire the item
- 2Enter the price you sold the item for
- 3Subtract the buying price from the selling price
- 4Divide the profit by the selling price
- 5Multiply by 100 to get the margin percentage
Worked example
Worked Example
Vikram resells refurbished phones as a side business. He buys a handset for ₹500 and sells it for ₹750.
- 1Calculate the profit: 750 − 500 = ₹250
- 2Calculate the margin: (250 ÷ 750) × 100 = 33.33%
- 3Vikram keeps ₹250 in profit on every ₹750 sale
Result
The profit is ₹250 and the margin is 33.33%, meaning about a third of the selling price is profit.
Interpretation guide
How to read your result
The selling price is lower than your cost, so the transaction loses money.
Raise the selling price or reduce acquisition and shipping costs before running this item again.
Common for commodity groceries, electronics, and high-volume retail where turnover compensates for low per-unit profit.
Offset thin margins with volume or attach higher-margin accessories and services to the sale.
Typical for clothing retail, consumer brands, and service businesses, where this range sustains overhead and growth.
Keep this range in mind when pricing; it leaves room for occasional discounts without falling into a loss.
Characteristic of software, consulting, luxury goods, and niche products with strong brand or differentiation.
Protect the differentiation that supports this margin, and reinvest part of it in marketing and product quality.
Common mistakes
- - Forgetting to include transaction fees, shipping costs, and taxes in the buying price
- - Calculating margin on cost instead of on selling price
- - Ignoring holding costs for inventory that takes time to sell
Practical tips
Practical tips
Include shipping, platform fees, packaging, and taxes in the buying price, or your profit will look better than reality.
Margin is always calculated on the selling price; markup, which uses the buying price, is a different and higher number.
For a target margin, use: selling price = buying price ÷ (1 − margin%).
Track profit per product line, not just per sale, to spot which categories carry your business.
Recheck inventory holding costs for slow-moving stock, since time between buying and selling eats into rupee profit.
When should you use it?
- - Evaluating individual trade or resale profitability
- - Setting selling prices to achieve target profit margins
- - Tracking profit and loss across multiple inventory items
- - Assessing the financial impact of discounts on profitability
Benefits
- - Shows both absolute profit and margin percentage for complete analysis
- - Works for any currency and any scale of transaction
- - Provides immediate feedback on pricing decisions
Step-by-step example
Record the total cost of acquiring the item including purchase price and any associated fees. Note the selling price after completing the sale. Subtract the buying cost from the selling price. Divide the profit by the selling price and multiply by 100 for the margin.
Real-world example
A reseller buys a smartphone for Rs 500 and sells it for Rs 750. The profit is Rs 250 and the profit margin is 33.3%. This means 33.3% of the selling price is profit. If the selling price drops below Rs 500, the result shows a loss.