A product brand can post a healthy gross margin every month and still run out of money. That is not a paradox; it is the difference between gross margin and net margin, and it catches founders who track the first number because it is easy and ignore the second because it is uncomfortable. Gross margin vs net margin is the distinction between what a sale leaves after the product itself is paid for and what is left after everything else is paid for too.
This guide explains what each number includes, why the gap between them is different on Amazon than in wholesale, and how to use both to decide where your product should be sold.
Gross margin: what a sale leaves after the product
Gross margin is revenue minus cost of goods sold, expressed as a share of revenue.
If you sell a unit for 20 dollars and it cost you 8 dollars to make and land, gross profit is 12 dollars and gross margin is 60 percent.
What counts as cost of goods sold is the whole question, and it is worth getting right. It typically includes the product itself, packaging, inbound freight, duties and any direct labor to make the unit sellable. It does not include the cost of selling it or running the company. The full list is in COGS for product brands.
Gross margin tells you whether the product can support a business at all. If it is thin, nothing downstream can fix it. If it is strong, you have room to pay for everything else, but only if everything else is under control.
Net margin: what is left after everything
Net margin is what remains after cost of goods sold and every other expense: selling costs, marketing, fulfillment, platform fees, software, salaries, rent, insurance, interest and taxes.
Take the same 20 dollar unit with a 12 dollar gross profit. Now subtract the costs of actually selling it through a marketplace: referral fees, fulfillment fees, storage, advertising, returns. Suppose those add up to 8 dollars per unit. Then subtract the share of your fixed overhead that each unit carries, say 2 dollars. Net profit is 2 dollars, and net margin is 10 percent.
Sixty percent at the top, ten at the bottom. That gap is normal, and it is why gross margin alone tells you almost nothing about whether the business is working.
Why the two numbers diverge so much for product brands
Three things make product businesses especially prone to a wide gap:
- Selling costs are per unit, not fixed. Marketplace fees, advertising and fulfillment scale with every sale. Growth does not dilute them the way it dilutes rent.
- Inventory hides cost. Money spent on stock does not hit the income statement until the stock sells, so a growing brand can show a profit on paper while cash disappears into the warehouse.
- Returns and markdowns land late. A season that looked profitable in gross margin can turn out thin once clearance and returns come through.
Founders who only watch gross margin often discover the problem when the bank balance, not the spreadsheet, tells them.
Gross margin vs net margin, same product, two channels
The most useful thing to do with these two numbers is to compute both by channel, because the gap between gross and net is very different depending on where you sell.
Take a product with an 8 dollar landed cost.
On a marketplace, you sell at 24 dollars. Gross profit is 16 dollars, a gross margin of about 67 percent. Then referral fees, fulfillment, storage, advertising and returns take, say, 11 dollars. Contribution before overhead is 5 dollars, about 21 percent of revenue.
Through wholesale, you sell to a retailer at 12 dollars. Gross profit is 4 dollars, a gross margin of about 33 percent. The retailer pays for their own marketing and fulfillment. Your selling costs are a shipping label, a bit of packing and an invoice, say 1 dollar per unit on a case-quantity order. Contribution before overhead is 3 dollars, about 25 percent of revenue.
The marketplace wins on gross margin by a wide gap. On the number that actually reaches your overhead, the two channels are close, and wholesale gets there with far less working capital tied up in advertising and with orders that arrive in cases instead of single units. This is the comparison in detail in Amazon FBA fees vs wholesale margin, and the free wholesale margin calculator runs it for your own product in a minute.
Contribution margin: the number in between
Between gross and net sits a third figure that is often more useful than either: contribution margin, which is revenue minus all variable costs, before fixed overhead. It answers the question "does one more sale of this product, in this channel, put money toward the rent or take it away?"
For a product brand that sells in more than one place, contribution margin by channel is the number that should drive decisions about where to push. Gross margin flatters channels with high sticker prices and high selling costs. Net margin depends on how you allocate overhead, which is always a judgment call. Contribution margin is neither, and contribution margin for product brands shows how to use it to judge an individual wholesale order.
How to read your own numbers
A simple monthly routine:
- Compute gross margin by product. Use true landed cost, not the factory invoice. If any SKU is below the level your channel needs, fix cost or price before doing anything else.
- Compute contribution margin by channel. Subtract every cost that only exists because of that sale. This is where marketplaces and wholesale start to look different.
- Compute net margin for the whole business. One number, after everything. This is the one that has to be positive over time.
- Watch the trend, not just the level. A gross margin that drifts down two points a quarter is a supplier or freight problem. A net margin that drifts down while gross holds is a selling-cost problem.
Founders sometimes ask what a "good" net margin is for a product brand. The honest answer is that it varies with category, channel mix and stage, and anyone quoting one figure for all product businesses is guessing. The useful benchmark is your own trend and your own channels compared to each other.
Common mistakes
- Treating the marketplace payout as revenue. Revenue is what the customer paid. Fees are a selling cost. Booking net payout as revenue makes gross margin look worse and hides how large the fees really are.
- Leaving freight and duties out of COGS. That inflates gross margin and makes every downstream decision wrong. Landed cost explained covers what to include.
- Ignoring your own time. If the founder does all the packing and customer service for free, net margin is being subsidized by unpaid labor. Price that in, at least roughly.
- Comparing channels on gross margin alone. This is how brands conclude that wholesale "is not worth it" while the marketplace quietly eats the difference in fees.
The short version
Gross margin is what a sale leaves after the product is paid for. Net margin is what is left after everything. Product brands see a wide gap between them, and the gap is different by channel, which is exactly why the comparison matters. Compute gross margin by product, contribution margin by channel and net margin for the business, and let the middle number guide where you sell.
If wholesale wins the contribution comparison for your product, the next step is buyers. WholesalePilot finds the distributors, wholesalers and retail buyers that fit your product, verifies their emails, sends outreach in your name and books the calls, so you can move volume into the channel that keeps the most of each sale.
Gross margin says the product works. Net margin says the business does.
Paste your product link and see which buyers are a fit, free, and start the conversation.