Maximum profitable discount calculator
How far you can cut the price without falling below the margin you want to keep.
≈ 2 minutes
Work out my maximum discount
The real profitability of your bundle
A bundle is meant to get the customer taking more units. What is not guaranteed is that it leaves more money. The honest comparison is not between selling the bundle and selling nothing, but between selling the bundle and selling exactly the same products separately. This calculator makes that comparison and tells you how much extra volume you need just to break even.
Every calculation runs in your browser. The figures you type are never sent to a server and are never stored.
Your results will appear here
Enter the bundle price and the products that make it up.
- How many products go into the bundle
- Price, cost and quantity of each one
- Final bundle price and shared order costs
Calculation results
Bundle profit
—
What the bundle leaves after products, fees and costs.
Bundle margin—
Value at list price—
Bundle price—
Discount you give—
Discount percentage—
Cost of the products—
Profit at list price—The same basket without discount
Margin at list price—
Profit you give up—
Sales factor—How many times more you would need to sell
Required uplift—
See the breakdown
| Value at list price | — |
| Cost of the products | — |
| Bundle fee | — |
| Shared costs | — |
| Extra bundle cost | — |
| Bundle profit | — |
| Product 1 · Subtotal at list | — |
| Product 1 · Cost subtotal | — |
| Product 2 · Subtotal at list | — |
| Product 2 · Cost subtotal | — |
| Product 3 · Subtotal at list | — |
| Product 3 · Cost subtotal | — |
| Product 4 · Subtotal at list | — |
| Product 4 · Cost subtotal | — |
| Product 5 · Subtotal at list | — |
| Product 5 · Cost subtotal | — |
Recommended next step
If the bundle gives up more than volume can recover, the problem is the size of the discount: work out how much fit without dropping below the margin you want.
Work out my maximum discountResults are estimates based on the information you enter. Fees, taxes and platform terms can change: always check the figure that matters to you against your invoice or the official platform. They do not replace your real invoices, your official accounts or professional tax, financial or legal advice.
What this tool works out
This bundle profitability calculator compares two scenarios with exactly the same basket: the customer takes the same products, in the same quantities, paying either the bundle price or the sum of the individual prices.
That is the comparison that matters. Comparing the bundle against selling nothing always makes it look like a good idea; comparing it against separate sales shows what the discount really costs.
What you need to enter
Three figures per product: what you sell it for on its own, what it costs you, and how many units go into the bundle. A bundle can carry two units of the same item, and that changes the calculation.
- Number of products in the bundle, from two to five
- Individual price, unit cost and quantity of each product
- Final bundle price
- Channel percentage fee and flat fee
- Shared order costs: packaging, shipping, pick and pack, acquisition
- Any extra cost specific to assembling the bundle
How the formula works
Shared costs are identical in both scenarios, because it is one order either way. What changes is the price, the fee calculated on it, and the extra cost of assembling the pack.
individual value = sum(price of each product x quantity)
product cost = sum(cost of each product x quantity)
discount = individual value - bundle price
bundle fee = bundle price x % + flat
no-pack fee = individual value x % + flat
profit with bundle = bundle price - product cost
- bundle fee - shared costs
- bundle assembly cost
profit without bundle = individual value - product cost
- no-pack fee - shared costs
profit given up = profit without bundle - profit with bundle
sales factor = profit without bundle / profit with bundle
The sales factor is the key figure: it says how many times more bundles you have to sell to earn what you would selling the items separately.
A worked example
A bundle with one unit of a $20 product costing $8, and two units of a $15 product costing $6. Separately they add up to $50; the bundle sells at $44. The channel charges 10 % plus $0.30, the order carries $1.50 of packaging, $3 of shipping and $5 of acquisition, and assembling the bundle costs $0.80 extra.
| Item | Value |
|---|---|
| Value of the products separately | $50.00 |
| Bundle price | $44.00 |
| Discount given | $6.00 |
| Discount as a percentage | 12.00% |
| Profit with the bundle | $9.00 USD |
| Profit without the bundle | $15.20 |
| Profit given up | $6.20 |
| Sales increase needed | 68.89% |
The bundle leaves $9 of profit; the same products sold separately would leave $15.20. The $6 discount — 12 % of the individual value — costs $6.20 of profit, and offsetting it would take 68.89 % more units sold. If the bundle does not move volume by almost 70 %, margin is being given away.
How to read the result
Profit given up is what each bundle costs you against the alternative. It is not a loss: it is an investment in volume, and like any investment you need to know what return it demands.
That return is the percentage increase needed. If the bundle demands 69 % more units to match, the question stops being about margins and becomes one about the market: will your volume rise 69 %? If the honest answer is no, the bundle is giving margin away.
A bundle that sells more is not automatically more profitable. Selling 30 % more units with a bundle that demands a 69 % increase means earning less than before, however good the sales dashboard looks. It is the most common mistake in this decision.
A detail people forget: the fees
Percentage fees are charged on what you collect. Since the bundle collects less than the sum of the separate products, the fee on the bundle is smaller too.
That works in the bundle's favor and this calculator accounts for it: it applies the fee to the bundle price in one scenario and to the individual value in the other. Ignoring it would penalize the bundle unfairly and lead you to reject bundles that do pay off.
What to decide next
If the bundle discount looks too aggressive, the next question is how much discount there was room for. The ceiling is set by the margin you want to keep, and beyond a certain point no amount of volume fixes it.
What this assumes
- The customer takes exactly the same products in both scenarios
- Shared order costs are identical with and without the bundle
- The percentage fee applies to the amount actually collected
- Quantities inside the bundle are whole units
- The bundle assembly cost applies only to the bundle scenario
What it does not cover
- Whether the bundle will actually raise your sales volume
- Cannibalization of separate sales of those same products
- The effect of the bundle on inventory turnover
- Partial returns of a bundle
- The cost of holding stock of every component at once
Frequently asked questions
Why compare against selling the items separately rather than not selling?
Because comparing against selling nothing makes any bundle look like a good idea. The real alternative is that same customer taking the same products at full price, and that is where the cost of the discount becomes visible.
What quantity do I enter if the bundle carries two units of the same product?
Enter the product once with quantity 2. The calculation multiplies price and cost by that quantity, so a bundle with two units of the same item is handled correctly without repeating the line.
Are shipping and packaging counted once or per product?
Once, because it is a single order in both scenarios. That is why they sit as shared costs rather than inside each product: if the customer buys all three items separately in one order, they pay one shipment, just as with the bundle.
My bundle sells more, does that not make it profitable?
Not necessarily, and it is the most frequent mistake. If the bundle demands 69 % more volume to match and only lifts sales by 30 %, you are earning less than before for more work. The sales dashboard improves and the income statement gets worse.
What if the bundle profit comes out negative?
No amount of volume fixes it: every bundle sold subtracts. The calculator flags that rather than handing you a huge sales factor, because multiplying sales that lose money only speeds up the loss.
Do I count acquisition inside the shared costs?
If the order arrives through paid advertising, yes: that cost exists in both scenarios and is counted once. If the bundle is aimed at customers you already have, you can leave it at zero and the result is contribution before acquisition.
Does a bundle cannibalize separate sales?
It usually does, and this calculator does not measure it. If many bundle buyers would have bought the products separately anyway, the real incremental volume is smaller than it looks and the bundle needs to be more profitable, not less.
What should I work out after this?
How much discount there was room for. If the bundle gives up more margin than volume can recover, the problem is the size of the discount, and there is a ceiling you can calculate.
Official sources
Shopify — product bundling strategies and bundle discountshttps://www.shopify.com/blog/bundling-for-retail
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