How the discount and its profit impact are calculated
A discount is not just a lower sticker price — it comes straight out of your profit. This tool separates two questions that sellers often blur: what the customer pays after the discount, and what you keep after cost and commission. The two formulas behind it are simple:
- Discounted price = list × (1 − discount / 100). The discount amount is the difference between the list and the discounted price.
- Net profit = price − cost − price × commission / 100. Because commission is charged on the sale price, a lower price lowers the commission too — but never enough to offset the lost revenue.
Take a product with a 300 TL list price, a %25 discount, a 150 TL cost and a %20 commission:
| Measure | Formula | Result |
|---|---|---|
| Discounted price | 300 × (1 − 0,25) | 225 TL |
| Discount amount | 300 − 225 | 75 TL |
| New net profit | 225 − 150 − 225 × 0,20 | 30 TL |
At the list price the net profit was 300 − 150 − 300 × 0,20 = 90 TL; after the discount it drops to 30 TL. A %25 discount cut the profit by two thirds — the kind of impact a headline discount rate hides until you do the math.
The break-even price: the floor for your discount
Every discount has a floor. Below the break-even price — cost / (1 − commission) — the sale no longer covers the product and the commission, and each order runs at a loss. In the example above, break-even is 150 / (1 − 0,20) = 187,50 TL. As long as the discounted price stays above that, you keep a net profit; if a deeper discount pushes it under, the calculator flags the sale as a loss.
This is why the tool asks for your commission instead of assuming one: the break-even point moves with the category rate. Enter your own commission, and verify the exact rate — and any campaign-specific commission — from your Seller Center.
Net profit on a marketplace: what this tool leaves out
To keep the campaign math clear, this calculator deducts only cost and commission. On a real marketplace order there is more: shipping/desi cost, service fees, %1 withholding tax and return costs all come off the same sale. A discount that still looks profitable here can turn thin, or negative, once those are added.
For the full picture with every deduction per sale, use the Trendyol profit calculator. To reason about margin and markup before discounting, see the profit margin calculator, and to separate the tax inside the price, the VAT calculator.