Why revenue, margin and profit should sit in separate columns
Three numbers can describe the same sale without meaning the same thing. Revenue records the sale amount. Margin compares that amount with specified costs. Profit depends on which further expenses have been included.
Label your calculation
For a hypothetical item sold for 50 with a product cost of 30, the difference is 20. Calling that 20 “profit” ignores delivery, payment fees, rent, software and other expenses. If you use the term gross margin, define which costs your calculation includes and keep that definition consistent.
Separate fixed and variable costs
Variable costs tend to move with orders, while fixed commitments may continue even during a quiet month. The distinction can help you evaluate a promotion: more sales may contribute toward fixed costs, but an order priced below its variable cost can make the cash position worse. Real classifications can require accounting judgement.
Review the store, not just the bestseller
A popular item may bring customers to the site while contributing little after returns or support time. Compare products using the same assumptions and reporting period. Use the result to ask better questions about pricing and fulfilment rather than declaring a winner from one number. For financial reporting, tax treatment or major business decisions, consult a qualified professional familiar with your accounts.
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