Amazon marketplace
Rules updated: Jul 27, 2026Access verified: Jul 9, 2026Enter price, FBA costs, ads, and returns to see unit profit and break-even price.
Match your statements and contracts; results update instantly.
Revenue = selling price + shipping charged to the buyer.
Amazon platform fee = max(revenue × referral fee rate, minimum referral fee). FBA, storage, inbound placement, shipping, packaging, ads, and other costs are modeled as unit fixed costs.
Target price is solved from fixed costs and variable rates, then buyer-paid shipping is subtracted.
Official sources define fee types, calculation bases, and eligibility conditions. The prefilled 15%, $0.30, FBA fulfillment, storage, and inbound-placement amounts are editable example assumptions, not an Amazon quote for any product.
This MVP does not model full size tiers, long-term storage, removal orders, return processing fees, low-inventory fees, or category-specific ladders.
Warnings appear when ad cost, returns, variable rates, negative profit, or target margin assumptions become risky.
The same price can produce a different result when ad competition, inventory velocity, and returns move. These scenarios hold the product and base rates constant while changing one explainable cost group.
These are planning stress tests built from the page's editable defaults, not platform quotes. Replace them with data for the same SKU, shop, country, and settlement period.
Scenario 1
Replace the baseline with per-unit charges from Seller Central and the Revenue Calculator before comparing scenarios.
Scenario 2
If higher ad cost misses the target margin, solve for an affordable CPA instead of relying on ROAS alone.
Scenario 3
When storage, inbound placement, and returns rise together, the target price shows the gap that pricing or inventory work must close.
Use the exact category rate from Seller Central or Amazon's fee schedule. The default 15% is only an editable planning assumption.
No. It is a fast unit-economics model. Reconcile final fulfillment, storage, refund, and category charges with Amazon reports.
Many seller models treat them as per-unit allocations, so the calculator keeps them visible instead of hiding them inside one FBA number. Replace the examples with the Revenue Calculator, shipping-plan, and Seller Central amounts for the product.
Seller guide
Model Amazon FBA referral fees, fulfillment, storage, inbound placement, ads, returns, net margin, and break-even pricing.
Read the fee and profit guideThis tool is for business planning and education only. It is not financial, tax, legal, or marketplace compliance advice. Platform fees, promotions, logistics, taxes, refunds, payment processing, statement adjustments, and exchange rates change. Use official dashboards, settlement reports, advisors, and contracts as the source of truth.