Selling More Every Month, Earning Less Every Month
A shop can grow its sales and shrink its profit at the same time. Here is how to find which of your products actually pay you.
Deepa's monthly sales in her Pune store grew for five consecutive months. Over the same five months, the money left at the end of each month fell. She assumed she had an expense problem and spent weeks auditing costs that turned out to be fine.
She had a mix problem. Her growth was concentrated entirely in products that barely paid her.
Turnover Is Not Profit, and the Gap Can Be Enormous
Two products, both selling ₹50,000 a month.
- Cooking oil at a 4% margin returns ₹2,000
- Household cleaning products at 22% return ₹11,000
- Same turnover. More than five times the profit.
If your reporting stops at total sales, these two look identical, and every decision you make — shelf position, promotion, restocking priority, which supplier to chase — is being made blind.
I was working harder every month to sell more of the things that paid me least.
Calculating Margin Properly
Gross margin percentage is (selling price − cost price) ÷ selling price × 100. Two mistakes are near-universal.
Mistake 1: dividing by cost instead of selling price
Buy at ₹80, sell at ₹100. The margin is 20% (₹20 ÷ ₹100). The markup is 25% (₹20 ÷ ₹80). Both numbers are valid and they mean different things. Mixing them up makes a shop look consistently more profitable than it is.
Mistake 2: ignoring what the sale actually cost you
Your real margin has to absorb more than the purchase price.
- Transport and loading on inward goods
- Expected wastage, breakage and expiry for that category
- Any discount you routinely give on that item
- Credit given, and the share of it you never collect
- GST, where it is not recoverable
A 6% headline margin on a fragile item with 3% breakage is really 3%. That is not a business, that is a hobby with inventory.
High margin on something that sells twice a month is worth less than modest margin on something that sells daily. Rank products by margin multiplied by units sold — total rupees of profit contributed. That single ranking usually reorders a shop's priorities more than any other number.
What Deepa Changed
She did not stop selling low-margin staples. Those bring people through the door, and a shop without oil and flour is not a shop. She changed what happened once they were inside.
- High-margin products moved to eye level and to the counter
- Low-margin staples stayed, but moved to the back — customers walk past everything to reach them
- Promotions switched to bundles pairing a staple with a high-margin item
- She renegotiated two supplier prices after seeing how little three products actually returned
- She dropped four items entirely whose true margin, after wastage, was negative
Her turnover grew more slowly over the next quarter. Her profit rose 34%.
The Number Worth Watching Monthly
Not total sales. Total gross profit, and the twenty products contributing most of it. In most small shops, somewhere between 20 and 30 products generate the majority of actual profit, and knowing which ones changes almost every operational decision you make.
Arali records cost and selling price per product, so margin and profit contribution come out of ordinary sales recording rather than a spreadsheet exercise. If you have never ranked your range by profit contributed, that list is usually the most surprising report a shopkeeper reads.
Frequently asked questions
How do I calculate profit margin for a retail product?
Gross margin percentage is (selling price minus cost price) divided by selling price, times 100. Buying at ₹80 and selling at ₹100 gives a 20% margin. Dividing by cost price instead gives 25%, which is the markup — a different number. Confusing the two makes shops look consistently more profitable than they are.
Why is my shop selling more but earning less?
Almost always a product mix problem. Growth concentrated in low-margin items raises turnover while gross profit stagnates or falls. Two products each selling ₹50,000 a month can return ₹2,000 and ₹11,000 respectively, and reporting that stops at total sales cannot tell them apart.
What costs should I include when working out true margin?
Beyond purchase price: inward transport and loading, expected wastage and breakage for that category, routine discounts, uncollected credit, and non-recoverable GST. A 6% headline margin on a fragile item with 3% breakage is really 3%, which changes whether stocking it makes sense at all.
Should I stop selling low-margin products?
Usually not. Staples like oil and flour bring customers through the door even at 3–4% margins, and a shop without them is not a shop. The better move is to change placement — low-margin staples toward the back so customers pass higher-margin goods, with those at eye level and near the counter.