What is an Amazon profit calculator?
An Amazon profit calculator is a tool that estimates how much money you keep on a product after Amazon fees, product cost, shipping, ads and other expenses. It does not place inventory or pull live payouts by itself. You enter price and costs; it returns estimated profit, and usually profit margin, so you can decide whether a SKU is worth launching or repricing.
Sellers use one before ordering inventory, when comparing FBA vs FBM, and when ad spend changes. CrossKit’s calculator is a general ecommerce version of that workflow.
Steps
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Start from selling price
Use the expected customer price on that marketplace, after typical coupons if you run them.
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Subtract landed product cost
Supplier + packaging + inbound to the fulfillment center is your true unit cost, not the factory quote alone.
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Subtract marketplace and fulfillment fees
Referral, FBA or postage, storage and closing fees belong here. If you are unsure, overestimate slightly.
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Subtract demand costs
Ads, returns, influencer units and payment fees are still cash you spent to get the order.
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Read profit and margin together
A $3 profit on a $12 item is a different business than $3 on a $60 item. Margin tells you which.
Profit formula
Profit = Selling price − landed product cost − Amazon referral and fulfillment fees − advertising − returns allowance − other variable costs. Profit margin = Profit ÷ Selling price. Contribution after ads is the number most restock decisions should use.
Costs to include
Product, packaging, inspection, inbound freight, tariff if you pay it, referral fee, FBA or FBM postage, monthly storage, returns, PPC, coupons, and currency conversion. Optional: software, samples and photography amortized per unit if they are material.
CrossKit calculator
Open the Profit Calculator, enter revenue and each cost line, and read profit plus margin. Use Currency Converter when purchase currency and sale currency differ. The tool is free to start and runs in your browser.
When sellers actually open the calculator
Use it before a purchase order, when comparing FBA vs FBM, when a coupon or PPC change hits, and when FX moves. Do not wait for the monthly payout to discover a SKU was never viable. Keep Amazon’s fee preview for live FBA quotes and CrossKit for the full unit model that includes inbound, ads and returns. Recalculate SKU by SKU; a mid-size item that jumps a size tier is a different business.
Example
Price $24.00. Landed cost $7.50. Referral $3.60. FBA $4.80. Ads $2.00. Other $0.70. Profit = 24.00 − 7.50 − 3.60 − 4.80 − 2.00 − 0.70 = $5.40. Margin = 5.40 / 24.00 = 22.5%. If ads rise to $4.00, profit drops to $3.40 and margin to 14% — often the difference between restocking and pausing.
Common mistakes
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Confusing a calculator with Seller Central
The calculator is a planning model. Settlement reports are what actually hit your account.
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Leaving FX out of cross-border SKUs
A 3% swing on currency can erase a thin margin even if Amazon fees did not change.
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Calling the calculator “accurate to the cent”
It is only as good as the fees and ad line you typed. Label outputs as estimates.
Recommended tool
Profit Calculator
CrossKit’s Profit Calculator is the in-browser place to run this model: revenue, costs, fees, shipping and extras on one screen.
Frequently Asked Questions
What is the Amazon profit formula?
A practical formula is: Profit = Selling price − product cost − inbound − referral − fulfillment − ads − other expenses. Margin = Profit / Selling price.
Which costs should I include?
Include everything that scales with a unit: goods, freight, Amazon fees, ads, returns, packaging, prep, storage and currency conversion. Skip one-off brand photos unless you amortize them.
Does CrossKit pull Amazon fees automatically?
No. You enter fee estimates. Use Amazon’s fee preview for the current size tier, then paste those numbers into CrossKit to model ads and landed cost together.
Is an Amazon profit calculator the same as the revenue calculator?
Amazon’s revenue calculator estimates fees for a size and price. A profit calculator adds product cost, inbound, ads and returns. You need both: official fees, then a full unit model.
Can I use it before I have a live listing?
Yes. That is the point. Estimate fees from similar ASINs and your packaging, then decide whether to sample or raise a PO.