Amazon FBA Fee Calculator (2026)
Select your size tier, weight, and sale price — the calculator applies the 2026 fulfillment fee including size/weight/price-band pricing, the April fuel surcharge, and the Low-Price FBA discount, then adds your referral fee to show true per-unit profit.
Large Standard · 12 oz
Price band: $10–$50 (standard rate)
Fee structure
How Amazon FBA fees work in 2026
Fulfillment fee by tier, weight & price band
Since January 15, 2026, Amazon's fulfillment fee depends on price band too, not just size and weight. Items under $10 get the Low-Price FBA discount (~$0.86/unit lower); items over $50 pay a modest premium on standard-size tiers. The calculator applies this automatically from your sale price.
3.5% fuel surcharge included
Amazon's April 2026 fuel and logistics surcharge is automatically applied on top of your fulfillment fee — no manual math needed.
Overmax handling fee for oversized items
Extra-Large items exceeding 96in on the longest side or 130in combined length+girth incur a $17-25/unit Overmax surcharge, effective January 2026. Toggle it on if your item qualifies.
Works for any category
Pick your category to set the correct referral rate (8-20%), or use the dedicated Amazon Referral Fee Calculator for tiered and progressive category rates.
Amazon FBA fee calculator — size tiers, price bands, and the 2026 fee changes explained
Amazon FBA fulfillment fees are no longer just a function of size and weight. As of January 15, 2026, Amazon restructured the fee schedule around three price bands — under $10, $10–$50, and over $50 — meaning two identical products can pay different fulfillment fees depending on what they sell for. This is a genuine structural change, not a minor rate adjustment, and most fee calculators online still model the old weight-only system.
How the price bands work
Items priced under $10 qualify for the Low-Price FBA discount — roughly $0.86 per unit lower than the standard fee, reflecting Amazon's push to keep low-margin, low-price listings viable on the platform. Items priced $10–$50 pay the standard rate shown in the size-tier table below. Items priced over $50 pay a modest premium on standard-size tiers — about $0.51 more for Small Standard and $0.31 more for Large Standard, based on Amazon's published 2026 fee changes. This calculator applies all three automatically based on the sale price you enter.
The 2026 fuel and logistics surcharge
Separately, as of April 17, 2026, Amazon applies a 3.5% surcharge on top of every FBA fulfillment fee (confirmed directly by Amazon to CNBC and the Associated Press). This is calculated on the fulfillment fee itself, not the sale price — a $5.00 base fee becomes $5.18 after the surcharge. The calculator includes this automatically in every result, stacked on top of whichever price band applies.
The Overmax Handling Fee
Also effective January 15, 2026: any Extra-Large item exceeding 96 inches on its longest side, or 130 inches in combined length plus girth, is classified as "Overmax" and incurs an additional $17–25 per unit surcharge on top of the standard Extra-Large fulfillment fee. Toggle the Overmax option above if your product qualifies — this catches sellers of large furniture, exercise equipment, and similar oversized goods off guard, since it's easy to miss if you're only tracking weight.
Finding your exact size tier
Always measure your packaged product — including box, padding, and any inserts — not the bare item. A small item in a large box gets charged at the larger tier. Amazon's official size tier definitions: Small Standard (≤15in longest side, ≤1lb), Large Standard (≤18×14×8in, ≤20lb), Large Bulky (up to 50lb), Extra-Large (up to 150lb, or Overmax above the dimensions noted above).
Storage fees and aged inventory
Beyond the per-unit fulfillment fee, FBA charges monthly storage — roughly $0.78 per cubic foot from January through September, rising sharply during the October–December peak season. Inventory that sits unsold accumulates additional aged-inventory surcharges at 181, 271, and 365 days, with a new 456+ day tier added for 2026. Amazon also tracks a per-FNSKU low-inventory-level fee if your stock runs too thin relative to demand. Check your Inventory Age and Fee Preview reports in Seller Central regularly — these two costs compound quietly and rarely show up in a simple per-sale fee calculation.
FBA fee vs referral fee — what's the difference
The referral fee is Amazon's marketplace commission, charged to every seller regardless of fulfillment method. The FBA fulfillment fee is separate and only applies if Amazon physically stores and ships your inventory. For category-specific referral rates including tiered and progressive structures (Apparel, Jewelry, Appliances), use the Amazon Referral Fee Calculator.
Fee figures on this page were verified in July 2026 against Amazon's own seller communications and independent reporting (CNBC, AP News, Supply Chain Dive). Amazon's exact per-unit fee for your specific product is authoritative in your Seller Central Fee Preview report — this calculator is designed to match it closely, not replace it.
FAQ
Amazon FBA fee questions answered
What are Amazon FBA fees in 2026?
FBA fees combine a referral fee (8-20% for most categories) with a fulfillment fee based on size tier, weight, and — since January 15, 2026 — price band. A 3.5% fuel surcharge applies to all fulfillment fees as of April 17, 2026.
How is the FBA fulfillment fee calculated in 2026?
Amazon now uses three price bands (under $10, $10-$50, over $50) alongside size tier and weight. Items under $10 get the Low-Price FBA discount (~$0.86/unit lower); items over $50 pay a modest premium on standard-size tiers (roughly +$0.51 Small Standard, +$0.31 Large Standard). Select your tier, enter weight, and set your sale price above — the calculator applies all of this automatically.
What is the Amazon FBA fuel surcharge?
A 3.5% surcharge added to all FBA fulfillment fees starting April 17, 2026, calculated on the fulfillment fee itself. On a $5.00 base fee, this adds about $0.18, making the total $5.18. The calculator includes this automatically in every result.
What is Amazon's Low-Price FBA discount?
Items priced under $10 qualify for a reduced fulfillment fee — roughly $0.86/unit lower than the standard rate on average. This calculator applies the discount automatically whenever your sale price is under $10.
What is the Overmax Handling Fee?
Effective January 15, 2026, Extra-Large items exceeding 96in on the longest side, or 130in combined length + girth, incur an additional $17-25/unit surcharge on top of the standard Extra-Large fee. If your item is this large, toggle the Overmax option in the calculator to include it.
FBA vs FBM — which is cheaper?
FBA costs more per unit (fulfillment fee + storage) but gets Prime eligibility and hands-off logistics. FBM avoids the fulfillment fee but you handle storage, packing and shipping yourself. FBM is often cheaper for large, heavy, or slow-moving inventory where FBA storage and aged-inventory fees stack up.
What are Amazon's FBA storage fees in 2026?
Standard monthly storage runs about $0.78/cubic foot from January through September, rising sharply during the October-December peak season. Inventory that sits unsold also accumulates aged-inventory surcharges at 181, 271, 365, and (new for 2026) 456+ day thresholds — check your Inventory Age report in Seller Central to avoid these.
What are the Amazon FBA size tiers?
Small Standard (under 15in longest side, under 1lb), Large Standard (under 18x14x8in, under 20lb), Large Bulky/Oversize (up to 50lb), and Extra-Large (up to 150lb). Always measure your packaged product including box and padding, not just the item alone.