FREE SHOPKEEPER TOOL / COSTS & MARGINS
Supplier cost change and profit margin calculator
See how a changed supplier cost affects your estimated profit per item, gross margin, break-even price and the selling price needed for your target margin.
Try your own numbers
All calculations happen in your browser. Nothing entered here is sent to SupplyMirror. Values below are illustrations, not live supplier or store prices.
- Profit before supplier change / item
- 74.00 EGP 37.00%
- Profit after supplier change / item
- 49.00 EGP 24.50%
- Difference in profit / item
- -25.00 EGP
- Break-even selling price
- 149.49 EGP
- Selling price for your target margin
- 188.32 EGP
At your current price, the estimated margin still meets your target.
How the formula works
Estimated profit per item = selling price minus supplier cost, per-item shipping, other entered per-item costs and the entered platform percentage of the selling price. Gross margin is estimated profit divided by selling price. Suggested selling prices are rounded up to two decimal places.
What the result does not cover
This is an illustrative gross-margin calculation, not a complete accounting, tax or pricing recommendation. It excludes any taxes, refunds, discounts, currency conversion, differing shipping rules, storage charges and fees you did not enter. Check actual supplier prices, subscription terms and all costs before changing a store listing.
Why monitoring supplier changes matters
A price increase can reduce the margin on an unchanged selling price. Supplier-monitoring software can help record observable price changes on a schedule, but real-time accuracy and authorized store writes depend on the source, subscription and integration capabilities.