Discount Impact Calculator
Calculate revenue impact of discounts on margins
Current units per period — used for the before/after profit summary.
Comma-separated discount percentages to compare side by side (e.g. 5, 10, 15).
| Metric | Before | After |
|---|---|---|
| Price | $0 | $0 |
| Margin | 0% | 0% |
| Profit / Unit | $0 | $0 |
| Total Profit | $0 | $0 |
| Discount | New Price | New Margin | Profit / Unit | Volume Increase Needed | Break-even Units |
|---|
What is Discount Impact Calculator?
The Discount Impact Calculator is a free online tool that shows the true cost of a price cut before you offer it. A discount looks small as a percentage but can devastate your margin, because every dollar discounted comes straight off profit. You enter the original price, the discount percentage, your unit cost, and the units you sell, and the tool instantly returns the new price, the revenue loss, the original and new margins, the margin erosion in percentage points, the profit per unit before and after, and — crucially — the volume increase needed to break even on the discount. A before vs. after summary contrasts price, margin, per-unit profit, and total profit, while a side-by-side scenario comparison models several discount levels (for example 5%, 10%, and 15%) at once. A built-in currency selector formats every figure in your currency, and everything runs in your browser with no signup.
How to use Discount Impact Calculator?
Measuring discount impact takes only a moment and runs entirely in your browser:
- 1 Pick your Currency, then enter the Original Price of the product or deal before any discount is applied.
- 2 Enter the Discount as a percentage and the unit Cost of the product. The cost is essential because it determines how much margin the discount actually consumes. Add your Units Sold to see the total-profit impact.
- 3 Read the impact. The tool shows the New Price, the Revenue Loss per sale, both the Original Margin and New Margin, the margin erosion, and the profit per unit before and after, so you can see exactly how much profit the discount removes.
- 4 Review the Volume Impact and the Before vs. After summary. The tool calculates the Volume Increase Needed and break-even volume — how many more units you must sell at the discounted price just to earn the same total profit.
-
5
Compare discount scenarios. Type several percentages (e.g.
5, 10, 15) to see new price, new margin, profit per unit, the required volume increase, and break-even units for each, side by side.
Why use this tool?
Discounting is the fastest way to win a deal and the fastest way to destroy profit. A 20% discount on a product with a 30% margin can wipe out most of the profit and require selling far more units just to stay even — an increase that rarely materializes. This calculator makes that trade-off concrete, showing the volume you would need to recover the margin loss before you concede the price. The scenario comparison lets you weigh a modest discount against an aggressive one in a single glance, and the before/after summary turns abstract percentages into total-profit numbers your team can act on. It arms reps to defend value, helps managers approve discounts with discipline, and steers teams toward value-adds and bundles instead of blanket price cuts. Because it runs privately in your browser, your pricing and cost data never leaves your device.
Examples
A 15% discount on a 100 product costing 70 cuts margin from 30% to roughly 18%, erodes about 12 percentage points of margin, and demands a large volume increase just to break even.
The scenario table shows how each step deeper into discounting raises the break-even volume sharply, making it obvious where a discount stops paying for itself.
Enter your units sold and the before/after summary reveals the real cash impact — for example a 10% discount turning a healthy total profit into a slim one.
A rep uses the margin and volume figures to show a prospect why a requested discount is uneconomical, then offers a value-add instead of cutting price.
Frequently Asked Questions
Is the Discount Impact Calculator free to use?
Yes. The tool is completely free with no signup, no limits, and no account required. You can model as many discount scenarios as you like.
Why does a small discount hurt margin so much?
Because the discount comes entirely off profit, not cost. On a product with a 30% margin, a 15% discount removes roughly half the profit, since the cost stays the same while revenue falls.
What is the volume increase needed?
It is how many more units you must sell at the discounted price to earn the same total profit you made before the discount. It is often far higher than people expect.
How do I compare several discounts at once?
Type the percentages you want to test, separated by commas, into the scenarios field (for example 5, 10, 15). The comparison table then shows new price, new margin, profit per unit, the required volume increase, and break-even units for each.
Can I change the currency?
Yes. Use the currency selector to display all monetary figures with the symbol you choose. The currency is for formatting only and does not affect the underlying percentages or break-even math.
Is my pricing data stored anywhere?
No. All calculations happen locally in your browser, so your price, discount, and cost figures are never uploaded to or stored on a server.
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