Amazon COGS Calculator
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Key fact: Cost of goods sold is not the factory price. It is the unit cost plus inbound freight, duty, prep and Amazon's own fees, and the gap between the quoted price and the landed cost is where most sellers misjudge their margin. The free COGS calculator builds landed cost per unit from your own inputs, so profit is measured against the real number rather than the one on the invoice.
Calculate your Cost of Goods Sold, net profit, and break-even point for Amazon FBA. Free, no signup, updated for 2026.
What is COGS and Why It Matters in 2026
Cost of Goods Sold (COGS) is the direct cost of producing the products you sell — including raw materials, manufacturing, packaging, and inbound freight. For Amazon FBA sellers in 2026, COGS is the single biggest lever on your profit margin. Many sellers only track the product cost and ignore hidden costs like FBA fulfillment fees, storage fees, and the 15% referral fee, which can silently eat 40-60% of your revenue.
A healthy FBA product usually has a net margin of 20-35% after all fees. If your margin is below 15%, your COGS is likely too high relative to price — common fixes include negotiating with suppliers, reducing packaging weight, switching to FBA Small and Light (for qualifying items), or raising your price to a psychologically optimal point like $29.99 instead of $27.99. Use this calculator before ordering inventory, not after.
📹 Watch: COGS & Break-Even in Action
Where does your $30 actually go? Total cost, margin health and break-even price.
Frequently Asked Questions
What counts as COGS for Amazon sellers?
COGS includes product purchase cost, packaging, inbound shipping/freight, and any per-unit customs or inspection fees. It does NOT include Amazon fees (referral, FBA fulfillment, storage) — those are selling costs, which this calculator tracks separately so you see the full picture.
What is a good COGS percentage?
As a rule of thumb, product COGS should be under 25-30% of your selling price. Combined with Amazon fees (typically 30-40%), your total costs should stay under 70-75% of price, leaving a 25-30% net margin before advertising.
Does the 2026 Amazon fee increase affect my COGS?
The 2026 referral fee changes (including the fuel & inflation surcharge) affect your total costs, not your raw COGS. This calculator folds the 15% referral into the cost breakdown so you see the true all-in cost per unit.
How do I lower my break-even price?
Lower variable costs (supplier price, shipping, FBA fees via size reduction) directly lowers your break-even. You can also batch-ship to reduce per-unit freight. Every $1 saved in COGS is $1 of pure profit — more valuable than raising price, which can hurt conversion.
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The 2026 benchmark for your landed cost, not just your unit cost
Profasee Research's State of Amazon Seller Operations 2026 measures what happens when the four numbers behind an Amazon sale — price, fees, ad spend, landed cost — are decided in one place instead of four.
Landed cost is the term most sellers carry from a spreadsheet they last updated a quarter ago — freight, duty, and FX move it every quarter while COGS per unit stays fixed in the sheet. Rebuild the landed cost here, then push it into the profit dashboard so the margin you quote is the margin you actually have.
Source: Profasee Research, State of Amazon Seller Operations 2026 — a vendor-published benchmark report built from aggregated Profasee account data across $1M+ Amazon brands. Figures quoted verbatim, retrieved 19 Sep 2026. All 10 benchmarks with sources →
