Amazon profit is not simply sale price minus the supplier quote. Before you place an order, model the costs of getting one unit from the supplier to the customer, the marketplace and fulfilment charges that apply to your own scenario, and the advertising or return allowance you expect to carry.
This is a planning exercise, not a promise of profitability. Actual fees, shipping, storage, returns, taxes, duties and policies can vary by product, route, category and programme. Use current quotes and official information before committing inventory or spend.
Use a per-unit profit formula
Estimated contribution profit = sale price − product cost − inbound shipping − marketplace fees − fulfilment fee − ad spend − returns and other allowance.
“Contribution profit” is a useful label because it shows what one sale contributes after the inputs you model. It may not include every overhead or tax obligation in your business. Keep the inputs separate so you can see which assumption changes the outcome.
1. Start with a realistic sale price
Use the price you expect to receive after any routine promotion or coupon assumptions you plan to run. A competitor's listed price is not automatically your achievable price: product differences, reviews, conversion rate, stock position and promotion strategy can all matter.
For a first pass, write down one base price and test a lower price as well. This shows whether the product still has room when competition or a launch discount puts pressure on price.
2. Turn the supplier quote into a product cost per unit
Use the price for the version, packaging and minimum order quantity you actually plan to buy. If the quote is in another currency, use a documented conversion assumption and leave room for movement rather than treating it as fixed.
Do not hide inspection, labels, inserts, prep or packaging changes inside a vague supplier number. Add them to the product cost or track them separately so you can revisit the estimate when the quote changes.
3. Calculate landed cost before setting margin expectations
Inbound shipping is only one part of getting inventory to its destination. Freight, insurance, duties, brokerage, receiving and other shipment costs can materially change the cost of a unit. Allocate the shipment total across the units you expect to receive, then use that per-unit figure in the profit model.
Use the Landed Cost Calculator to work through supplier, freight, insurance, duties, receiving and other shipment inputs. It is better to revise a transparent estimate as quotes arrive than to assume a generic freight percentage.
4. Separate marketplace fees from fulfilment costs
Marketplace fees and fulfilment fees are not interchangeable. In an Amazon selling scenario, referral and other marketplace fees may be tied to the sale price or your category, while fulfilment can depend on the fulfilment method, product characteristics and the services used.
Enter the figures that apply to your own listing plan. For a US FBA fee planning view, use the Amazon FBA Fee Calculator with editable inputs or a manual combined-fee override. Check current information against Amazon's pricing information; LandedLedger does not retrieve live fee data.
5. Give advertising and returns a place in the model
New products often need advertising to generate early sales, and some categories have meaningful return or damage rates. Leaving both at zero can make a sourcing estimate look stronger than the operating reality.
If you do not yet have product-specific history, use a clear planning allowance and test more than one scenario. You can later replace the allowance with figures from your own campaigns, return reports and fee reports.
Worked example: one unit sold at $32
Suppose you are evaluating a product that could sell for $32.00. Your current assumptions are:
- Product cost: $8.50
- Inbound shipping per unit: $1.20
- Referral fee at 15% of the sale price: $4.80
- Fulfilment fee per unit: $4.25
- Other marketplace fees: $0.00
- Advertising cost per order: $3.20
- Returns and other allowance: $0.80
The total estimated cost is $22.75. Subtracting it from $32.00 leaves an estimated contribution profit of $9.25 per unit. Dividing $9.25 by $32.00 gives an estimated net margin of 28.9%.
That result is a starting point, not a green light by itself. Repeat the calculation with a lower sale price, higher inbound cost, higher ad spend and a higher allowance. If a small change makes the result unattractive, you have found a sourcing risk before paying for inventory.
Run a simple sensitivity check
Use at least three cases: a base case, a cautious case and an upside case. Change one input at a time first, such as the sale price or ad spend, so you understand what drives the result. Then test a combined cautious case to see the downside if several assumptions move against you at once.
The Amazon Profit Calculator shows the estimated contribution profit, margin, break-even sale price, maximum ad spend at break-even and break-even ACOS from the assumptions you enter. It works as an editable planning tool for FBA or FBM scenarios and has no account connection.
What this calculation may still leave out
Depending on your business and route, you may need to account for storage, aged inventory, removal or disposal, financing, software, payroll, returns processing, refunds, tax, currency conversion, product liability cover, legal review or other overhead. Do not assume a blank field means the cost is zero.
Keep a short list of excluded items beside your sourcing calculation. When an item becomes known, add it to the appropriate per-unit field or include a documented allowance.
FAQ
What is a good Amazon profit margin?
There is no universal target. Margin needs to cover the risks, overhead and cash needs of your own product and operating model. Compare several conservative scenarios rather than relying on a single percentage.
Should I calculate profit before ordering inventory?
Yes. Use supplier, freight and fee assumptions before ordering, then revise the model when you receive more specific quotes or listing information. A model does not replace due diligence, but it makes assumptions easier to test.
Does the calculator include current Amazon fees automatically?
No. LandedLedger uses only the figures you enter. Fees can change and can vary by product, category and programme, so verify the figures you plan to use with current official sources or your own reports.
Is this tax, legal or financial advice?
No. It is an educational planning guide and calculator workflow. Seek qualified advice for decisions that require it.