Running a business involves hundreds of small financial decisions. You may need to decide how much to charge customers, whether a discount is affordable, how many products you need to sell, whether an advertisement is profitable, how much working capital you need or whether a loan payment fits your monthly budget.
These decisions become much easier when you work with actual numbers. Instead of asking whether a product “looks profitable”, calculate the selling price, total cost, contribution and expected profit.
Revenue is the money generated from sales before subtracting the relevant costs and expenses.
Total cost can include product cost, shipping, packaging, advertising, fees, salaries, rent and other expenses.
Profit is the amount remaining after subtracting the costs included in your calculation from revenue.
Enter your own numbers below. All calculations happen directly in your browser.
Calculate revenue, total cost, profit and profit margin.
Calculate profit and margin from revenue and total cost.
Find selling price from cost price and markup percentage.
Add GST to an amount or calculate GST from a GST-inclusive amount.
Find your discount amount, savings and final selling price.
Estimate how many units you need to sell to cover fixed costs.
Estimate monthly EMI, total interest and total repayment.
Include product cost, marketplace/payment fee, shipping, packaging, advertising and other per-order expenses.
Estimate monthly profit after product/service costs and operating expenses.
The simplest business profit formula is revenue minus costs. However, the real challenge is identifying all the costs that belong in the calculation.
For an online seller, total cost may include product purchase cost, manufacturing cost, packaging, shipping, marketplace commission, payment processing, advertising, returns and other order-related expenses.
For a service business, costs may include salaries, software, advertising, office expenses, contractors and other operating costs.
Imagine that an online seller purchases a product for ₹55 and sells it for ₹149. Looking only at the product cost, the difference appears to be ₹94.
But an online business may have additional costs for every order. Even small expenses become significant when multiplied by hundreds or thousands of orders.
| Cost | Example |
|---|---|
| Selling Price | ₹149 |
| Product Cost | ₹55 |
| Marketplace / Payment Fee | ₹20 |
| Shipping | ₹25 |
| Packaging | ₹8 |
| Advertising | ₹10 |
| Other Cost | ₹5 |
| Total Cost | ₹123 |
| Estimated Profit | ₹26 |
Margin and markup are two different percentages. Understanding the difference is important when setting product prices.
Profit margin measures profit as a percentage of selling price or revenue.
Markup measures how much you increase the cost price to reach the selling price.
Profit amount tells you how many rupees remain after the costs included in your calculation.
Example: If your cost is ₹500 and you apply a 40% markup, the markup amount is ₹200 and the selling price becomes ₹700. The profit margin is approximately 28.57%, not 40%.
The break-even point tells you how many units need to be sold before the contribution from those sales covers the fixed costs included in your calculation.
Contribution per unit is selling price per unit minus variable cost per unit.
Break-even analysis is useful when launching products, planning advertising campaigns, opening a store or deciding whether a business idea can support its fixed operating costs.
GST calculations can involve two common situations: adding GST to a taxable amount or finding the GST component from an amount that already includes GST.
For example, if the taxable amount is ₹1,000 and the applicable rate is 18%, the GST amount is ₹180 and the total becomes ₹1,180.
If you are considering a business loan, equipment financing or another type of borrowing, the monthly payment is only one part of the decision.
You should also consider the total interest, total repayment, expected business cash flow and whether the payment remains affordable during slower months.
The EMI calculator above provides an estimate based on the loan amount, annual interest rate and tenure entered.
A business can show a profit while still experiencing cash-flow pressure. This can happen when customers pay later while suppliers, salaries, rent or other expenses need to be paid earlier.
Growing businesses should therefore track both profitability and cash movement.
Monitor customer receipts and expected cash inflows.
Monitor suppliers, salaries, rent, advertising and bills.
Avoid planning your operations around every last rupee.
- Calculate complete cost per order instead of only product cost.
- Separate fixed expenses from variable expenses.
- Calculate profit margin before offering a discount.
- Include advertising costs when measuring e-commerce profitability.
- Review shipping and packaging expenses regularly.
- Track returns, cancellations and failed deliveries.
- Compare products by profit contribution rather than sales volume alone.
- Know your break-even sales target.
- Review recurring subscriptions and software costs.
- Avoid increasing expenses simply because revenue increased.
- Test pricing changes using actual conversion and profit data.
- Maintain a realistic cash reserve for slower periods.
High sales do not automatically mean high profitability.
Small per-order costs can become large at scale.
Returns and failed orders can change the real economics of online selling.
Guessing a selling price can create an apparently attractive but unprofitable product.
Accounting profit and available cash are not always the same.
Different products and services can have very different cost structures.
