Amazon fee calculator: price any SKU and watch your profit, margin and ROI move in real time.

How Amazon selling fees work in 2026

Amazon takes two main cuts on every FBA sale: a referral fee (a category-based commission on the sale price) and an FBA fulfillment fee (a flat per-unit charge for pick, pack and ship, based on size and weight). Referral fees were frozen for 2026 — unchanged since January 2024 — while FBA fulfillment fees for standard-size items priced $10–$50 rose by about $0.08 per unit on average from January 15, 2026 ($0.05 under $10, $0.31 over $50). A holiday peak card applies from October 15, 2026 to January 14, 2027.

Enter the packaged length, width, height and weight and the calculator finds the size tier and shipping weight, then reads the fee off Amazon's 2026 rate card for that tier and price band. Three 2026 rules shape that number. A fuel & logistics surcharge of 3.5% has applied to fulfillment fees — and only to fulfillment fees, not referral or storage — since April 17, 2026. Products priced under $10 bill on the Low-Price FBA column, which Amazon says runs about $0.86 less per unit on average; that is why the unit economics of $9.99 versus $10.00 swing more than the penny suggests. And from October 15, 2026 to January 14, 2027 the holiday peak card applies: the rate card menu follows today's date unless you pick one. Type your own fulfillment fee into the field and none of this is applied — a figure copied from Seller Central already carries whatever Amazon charged.

2026 FBA fulfillment fees by size tier, non-peak and holiday peak

Amazon bills a holiday peak rate card from October 15, 2026 to January 14, 2027, and the non-peak 2026 card the rest of the year. Each cell below is non-peak / peak, for products that are not apparel or dangerous goods, before the 3.5% fuel and logistics surcharge. A unit that ships on or after October 15 pays the peak rate even if it was ordered earlier. To see what the peak window adds across your monthly sales, use the FBA peak fee calculator. The figures are copied from Amazon's Seller Central page 2026 US FBA fulfillment fee changes, which also carries the apparel and dangerous goods cards the calculator uses when you pick those product types.

Size tier comes from the packaged dimensions and the larger of unit weight or dimensional weight (length × width × height ÷ 139). Small standard means 16 oz or less and at most 15 × 12 × 0.75 inches; large standard means 20 lb or less and at most 18 × 14 × 8 inches; small bulky allows up to 37 × 28 × 20 inches and 50 lb, large bulky up to 59 × 33 × 33 inches and 50 lb, with length plus girth up to 130 inches for both. Small standard fees use unit weight only; the other tiers bill on the larger of unit or dimensional weight, and bulky and extra-large units are measured with a minimum width and height of 2 inches. Those rules are from Amazon's Product size tiers and Shipping weight pages. Price $10.00 and $50.00 exactly bill in the $10–$50 column.

Monthly storage is billed per cubic foot on top of the fulfillment fee: $0.78 for standard-size and $0.56 for oversize from January to September, $2.40 and $1.40 from October to December, with higher rates for dangerous goods ($0.99 and $3.63 standard-size). Sellers storing over 25 cubic feet with more than 22 weeks of supply also pay a storage utilization surcharge, which this calculator does not add. Source: Monthly inventory storage fees.

The 2026 changes that aren't in this calculator

Two 2026 shifts hit margin outside the referral + FBA math above. Amazon ended US prep and labeling on January 1, 2026, so non-compliant inbound shipments now carry a defect fee of roughly $0.32–$5.72 per unit (up from $0.02–$0.07). And since March 10, 2025, lost or damaged stock is reimbursed at manufacturing cost, not retail — a $50 item that cost $15 to source pays back $15. Factor both in before trusting a thin margin.

FBA fee lines this calculator leaves out

These charges depend on how you ship and how long stock sits, not on the sale price, so the calculator does not add them to every unit. The amounts are from Amazon's Seller Central pages Inbound defect fees and 2026 US referral and FBA fee changes.

The inbound defect fee replaces the inbound placement fee on the units it covers, so a late or misrouted shipment no longer pays both. Amazon puts the average at $0.60 per unit. From 2026 the low-inventory-level fee is charged per FNSKU rather than per parent ASIN, and grocery is exempt. It applies only when both the 30-day and 90-day historical days of supply are under 28 days, and runs from $0.32 to $0.89 per unit for small standard items and $0.36 to $1.11 for large standard items.

Referral fees are tiered in some categories

Most categories charge a flat 15%, but several are tiered, meaning the rate changes with price. Clothing is the clearest example: items at or below $15 pay 5%, the $15–$20 band pays 10%, and above $20 pays 17%. Grocery charges 8% at or under $15 and 15% above. This calculator applies the correct tier automatically when you change the price — which is exactly why the rate note next to the price field updates as you type.

The $0.30 minimum referral fee

Most categories carry a $0.30 minimum referral fee per unit. On sub-$4 items the minimum, not the percentage, sets your fee — so a cheap accessory can be quietly unprofitable even at a "low" rate. The calculator enforces this floor.

Use the price slider to defend your margin

Drag the price slider and watch margin and ROI move. When a competitor undercuts you or Amazon nudges fulfillment fees, this is the fastest way to find the lowest price you can run while protecting your target margin. Bookmark it to re-check whenever you reprice.

Frequently asked questions

Worked example: one SKU, every line of the math

Run one illustrative SKU through the full chain the calculator applies. A $29.99 Home & Kitchen item: referral at 15% is $4.50. Say your inputs are a $7.00 landed cost, a $5.50 FBA fulfillment fee (yours comes from your size tier — enter the real one from Seller Central, or let the rate card estimate stand in), and $1.00 per unit of PPC in "Other cost". Net: $29.99 − $4.50 − $5.50 − $7.00 − $1.00 = $11.99 per unit — a 40% margin and 171% ROI on the $7 you put at risk. That's the healthy version. Now watch how fast it thins: a $3 price drop to $26.99 takes the referral fee down only 45 cents but takes net profit down $2.55 — because every dollar of price cut is a dollar of profit cut minus only your referral rate. Price moves hit profit roughly 85 cents on the dollar in a 15% category; cost moves hit it dollar for dollar. That asymmetry is why the slider matters more than any single estimate.

Finding your floor price before a price war finds it for you

The number worth knowing before you ever get undercut is your break-even price — where net profit is exactly zero. The algebra the calculator is doing for you: break-even = (landed cost + FBA fee + other costs) ÷ (1 − referral rate). For the SKU above: ($7.00 + $5.50 + $1.00) ÷ 0.85 ≈ $15.88. Anything below that price loses money on every unit before storage and returns. Two practical uses: set a repricer floor at break-even plus your minimum acceptable margin, and check the floor against your category's tier boundaries — in tiered categories, dropping price through a breakpoint changes the divisor itself, so a floor computed at 17% may be wrong at 10%. Drag the slider down until net hits zero and you'll see your true floor, tier changes included, without doing any algebra.

Individual vs Professional: the $0.99 question

The plan toggle above adds $0.99 per sale on the Individual plan. The Professional plan replaces that per-sale charge with a flat subscription of $39.99 a month — so the crossover is about 41 units: below roughly 40 sales a month the Individual plan's pay-per-sale is cheaper, above it the subscription wins, and the gap widens with every additional unit. Two caveats push the crossover lower in practice: Professional is also the gate for features that affect revenue (Buy Box eligibility on most categories, advertising, restricted-category applications), and the $0.99 applies per unit sold, not per order-day — a good launch week can quietly cost more than the subscription it was avoiding. If you're modeling a real business rather than a test listing, model Professional.

Pricing with the whole stack, not just this page

This calculator centers on the two fees every FBA sale always pays — referral and fulfillment — because they're the ones that scale with your pricing decision, and adds base storage for the months you enter. A durable price also has to carry the rest of the stack: aged-inventory surcharges on slow movers, returns (both the refund-processing cost and the fraction of returned units you can't resell), advertising as a percentage of sales rather than a fixed line, and the 2026 inbound-defect exposure ($0.32–$5.72 per unit) if your prep process isn't airtight. A workable habit: price to your target margin in this calculator, then subtract 3–5 points as the stack allowance and check the result still clears your floor. If a SKU only works at a 10% margin with zero allowance, it doesn't work.

More questions sellers ask

Sources & how this calculator is maintained

Fee rates and rules in this calculator are Amazon's published US schedules: the Seller Central "Referral fees" schedule (including tiered categories and the $0.30 per-unit minimum), the 2026 FBA fulfillment fee tables (non-peak from January 15, 2026 and holiday peak from October 15, 2026, read from Seller Central page GABBX6GZPA8MSZGW on 9 October 2026), Amazon's product size tier and shipping weight rules, the monthly storage fee table, Amazon's selling-plan pricing, and Amazon's 2025–2026 policy announcements (US prep/labeling retirement, inbound defect fees, manufacturing-cost reimbursement). The category data here matches our referral fee table so the two never disagree. Category rates and tier breakpoints are read off the "Referral fees" table on sell.amazon.com/pricing (columns: Product category / Referral fee percentage / Referral fee minimum amount), row by row. Corrected on 29 September 2026 against that table: Baby Products and Health & Household are 8% at or under $10.00 and 15% above (Health sits in the table’s “Beauty, Health, and Personal Care” row, which carries the same $10.00 breakpoint), Grocery and Gourmet is 8% at or under $15.00 and 15% above, and Pet Supplies is 15% “except 22% for veterinary diets”. Marginely is an independent seller-tools site: not affiliated with, endorsed by, or compensated by Amazon; no payment is accepted to alter rates or guidance; figures are Amazon's published rates, and worked examples are labeled as illustrative with user-supplied inputs. We review this page against the current Seller Central schedules on a recurring cycle and after each Amazon fee announcement. Found a discrepancy? Tell us via the about page — we verify against the source and correct. Official sources: Amazon Selling Partner pricing and Fulfillment by Amazon; Amazon Selling Partners — Update to U.S. Referral and Fulfillment by Amazon fees for 2026; Seller Central — Inbound defect fees; Seller Central — 2026 US Referral and FBA fee changes summary; Seller Central — FBA fulfillment fees (2026 non-peak and peak tables); Seller Central — Product size tiers; Seller Central — Monthly storage fees. Measured on 22 August 2026: that announcement carries the average per-unit increase and the effective date quoted here, in matching context. It was already in the fee monitor but had never been cited on the page.

Last reviewed: October 9, 2026 · next scheduled review with Amazon's next US fee announcement.