Amazon FBA Extra-Large Fees: $26.33 + $0.38/lb

Crossing into Extra-Large is not a heavier Large Standard fee. On the 2026 $10–$50 card the cell itself resets to $26.33 plus $0.38 per lb above the first pound — then the 3.5% fuel surcharge multiplies that cell.

Type Extra-Large into the Amazon FBA Calculator on the default $29.99 Home & Kitchen listing. At 1.00 lb the fulfillment row becomes $27.25 and net profit flips to -$10.96. The same sticker on the tool’s Large Standard 1.5 lb default keeps $10.69.

One Extra-Large cell, then a per-pound adder

Extra-Large is the FBA tier for packaged units that no longer fit Large Bulky — typically a longest side over 59″ or a shipping weight over 50 lb, or a length-plus-girth that Amazon assigns Extra-Large. This page only models the 0–50 lb Extra-Large card stored in amazon.ts: $26.33 on the $10–$50 column, $25.56 under $10, $26.33 over $50, plus $0.38 per lb above the first pound. The calculator’s Extra-Large dropdown uses that same formula.

Extra-Large · 0–50 lb · $10–$50 card · base fulfillment (before 3.5% fuel)

Shipping weight	Base FBA	After fuel	Dataset cell
1.00 lb	$26.33	$27.25	`extraLargeBase.mid`
10.00 lb	$29.75	$30.79	`mid` + 9 × $0.38
20.00 lb	$33.55	$34.72	`mid` + 19 × $0.38

Cells are amazon.ts fbaFulfillmentFees.extraLargeBase + extraLargePerLb, last verified 2026-10-01. Fuel is fuelSurchargeMultiplier (1.035). 50+ lb Extra-Large rows and Overmax are not in this file — verify those ASINs in Seller Central.

The size-tier cliff is the story, not the per-pound adder. On $29.99, Extra-Large at 1.00 lb bills $27.25 versus $5.61 on Large Standard 1.5 lb and $9.68 on Large Bulky 1.00 lb — $21.64 more fulfillment than the calculator default before you add a single extra pound. The $0.38/lb term then stacks on top of that already-reset base.

SKU A: $29.99 calculator defaults, Extra-Large instead of Large Standard

SKU A is the tool’s shipped default Home & Kitchen listing: $29.99, $8.00 COGS, $1.00 inbound, 0.25 cu ft, one off-peak month of storage ($0.78/cu ft → $0.20). Referral stays 15% ($4.50; the $0.30 minimum is not binding). Only the size dropdown and weight change.

Home & Kitchen, $29.99. Switching the calculator from Large Standard 1.5 lb to Extra-Large 1.00 lb moves fulfillment by $21.64 and profit by $21.64. The 10 lb adder is extra on top of that reset. Scroll sideways on small screens.

SKU A · Home & Kitchen · $29.99 · $8.00 COGS · $1.00 inbound · 0.25 cu ft × $0.78

Size / weight	Referral (15%)	FBA + fuel	Storage	Profit / unit	Margin
Large Standard 1.5 lb	$4.50	$5.61	$0.20	$10.69	35.6% · healthy
Large Bulky 1.00 lb	$4.50	$9.68	$0.20	$6.62	22.1% · thin
Extra-Large 1.00 lb	$4.50	$27.25	$0.20	-$10.96	-36.5% · loss
Extra-Large 10.00 lb	$4.50	$30.79	$0.20	-$14.49	-48.3% · loss
Extra-Large 20.00 lb	$4.50	$34.72	$0.20	-$18.43	-61.4% · loss

Profit = price − referral − FBA − storage − inbound − COGS. Reproduce the Extra-Large rows in the calculator with Extra-Large + Home & Kitchen + $29.99. The 1 → 10 lb adder ($3.54) is smaller than the Large Standard → Extra-Large cliff ($21.64).

On this mid-ticket SKU Extra-Large is already -36.5% · loss at 1.00 lb. The 10 lb and 20 lb rows (-$14.49 / -$18.43) only deepen a hole the size tier opened. Storage is held at 0.25 cu ft so the table isolates fulfillment — a real Extra-Large carton is often larger; re-enter your cube in the tool. Peak storage is $2.40/cu ft in Oct–Dec versus $0.78 off-peak.

SKU B: $79.99 / $18 — Extra-Large can still clear 25% at 1 lb

Same Extra-Large path, higher sticker. $79.99 sits in the over-$50 column; in this file that Extra-Large cell equals the mid column ($26.33), so fulfillment at each weight matches SKU A. Referral is 15% of the higher sticker ($12.00). COGS rises to $18.00. The size-tier reset no longer crosses zero at 1.00 lb.

SKU B · Home & Kitchen · $79.99 · $18.00 COGS · same inbound and storage

Weight	Referral (15%)	FBA + fuel	Profit / unit	Margin
1.00 lb Extra-Large	$12.00	$27.25	$21.54	26.9% · healthy
10.00 lb Extra-Large	$12.00	$30.79	$18.01	22.5% · thin
20.00 lb Extra-Large	$12.00	$34.72	$14.07	17.6% · thin

Same calculator path as SKU A: change price to $79.99 and cost to $18.00, keep Extra-Large, then step the weight. 1 lb is 26.9% · healthy; 10 lb is already 22.5% · thin.

If A, do not inbound the $29.99 / $8.00 Extra-Large unit — 1.00 lb is already -$10.96 per unit, and 20 lb is $7.47 more fulfillment on the same sticker. If B, a 1.00 lb Extra-Large inbound on $79.99 / $18.00 still clears 26.9%; treat the $0.38/lb adder as the packaging budget once the size tier is locked. A $19.99 / $10.00 Extra-Large unit (SKU C) is -$21.46 at 1.00 lb — volume does not fix that.

If Extra-Large at $30, do not inbound / if Extra-Large at $80, watch the pounds

The rule is not “oversize always loses.” It is two forks on the same Extra-Large 0–50 lb card — re-run your own price, COGS, cube, and the size Amazon actually assigned before you copy the dollars.

If leftover after 15% referral, COGS, inbound, and storage is already negative at 1 lb Extra-Large (SKU A / SKU C) — stop. Raising weight only adds $0.38 × fuel per pound on a unit that already lost $21.64 versus Large Standard. Re-price, cut COGS, redesign the carton back under Large Bulky, or drop the SKU. The Large Standard 1 / 2 / 3 lb walkthrough is Amazon FBA fees at 1 lb vs 2 lb vs 3 lb.
If leftover still clears 25% at 1 lb Extra-Large (SKU B) — inbound is fine at that weight. The 10 lb row is already 22.5% · thin; spend the packaging budget when a real path back toward 1.00 lb is cheaper than $3.54 per unit. Peak storage ($2.40/cu ft in Q4 vs $0.78 off-peak) is a separate lever on Amazon Q4 2026 prep.

Comparing the same SKU on another marketplace is the Marketplace Fee Comparison Calculator, not this Extra-Large table. The 3.5% fuel line that sits on every cell is already inside the calculator’s fulfillment row — Amazon FBA fuel surcharge is the walkthrough for that multiplier.

How to run the number this week

Open the Amazon FBA Calculator. Confirm the size Amazon assigned in Seller Central (Extra-Large vs Large Bulky vs Large Standard) before you touch price. A wrong dropdown is a $21.64 error on the $29.99 example.
Set Extra-Large, Home & Kitchen (or your real category), your COGS and inbound, and January–September storage unless the unit will sit into Q4. Enter the live list price and the packed shipping weight Amazon will use (the greater of actual and dimensional), staying at or under 50 lb for this card. Write down Net profit / unit. On SKU A at 1.00 lb that figure is -$10.96; on SKU B it is $21.54.
If you change cartons often, watch the live dimensional-weight line and the size-tier letter, not the factory spec. Helium 10 ^* is the research suite we already link from the calculator; Sellerboard ^* is the per-SKU settlement view. Neither changes the fee card.
Confirm the Extra-Large 0–50 lb row in Seller Central’s Revenue Calculator before you lock a packaging redesign. This page follows amazon.ts (https://sellercentral.amazon.com/help/hub/reference/external/G201411300). 50+ lb Extra-Large bands, Overmax, apparel, and dangerous-goods cards are outside this file.

Frequently asked questions

What is the Amazon FBA Extra-Large fulfillment fee on the $10–$50 card?

In this dataset Extra-Large 0–50 lb is $26.33 plus $0.38 per lb above the first pound on the $10–$50 column, then × 3.5% fuel. A 1.00 lb unit is therefore $26.33 before fuel and $27.25 after. Under $10 the base is $25.56 ($26.45 after fuel at 1.00 lb). Over $50 the Extra-Large cell in this file equals the mid column ($26.33), unlike Large Standard. Official Extra-Large cards also have 50–70 / 70–150 / 150+ lb rows and an Overmax handling add-on — those rates are not in amazon.ts. Verify anything above 50 lb or past 96″ / 130″ length-plus-girth in Seller Central’s Revenue Calculator.

How do I reproduce the Extra-Large $29.99 table in the calculator?

Open the Amazon FBA Calculator. Leave the defaults: $29.99 price, $8.00 cost, Home & Kitchen, $1.00 inbound, January–September storage, 0.25 cu ft, 1 month. Switch size to Extra-Large and set weight to 1.00. Net profit / unit should match -$10.96; the fulfillment row should match $27.25 ($26.33 × 1.035). Then set weight to 10.00 for -$14.49 and 20.00 for -$18.43. Switch size back to Large Standard at 1.5 lb to recover the tool default $10.69.

Does Extra-Large use the same $0.38/lb adder as Large Bulky?

Yes on the per-pound term in this file: Extra-Large and Large Bulky both add $0.38 per lb above the first pound. The bases are different. On a $29.99 listing at 1.00 lb, Large Bulky starts at $9.35 ($9.68 after fuel, $6.62 leftover) while Extra-Large starts at $26.33 ($27.25 after fuel, -$10.96 leftover). Small Bulky is not in amazon.ts — do not invent that cell. Confirm the live size tier Amazon assigned the ASIN before you model either card.

Does the 3.5% fuel surcharge apply to Extra-Large?

Yes. The 3.5% fuel & logistics surcharge (effective 2026-04-17) multiplies the Extra-Large fulfillment cell the same way it multiplies Large Standard and Large Bulky. Heavier Extra-Large units pay more dollars of surcharge because the base-plus-adder is higher — $1.17 on the 20 lb cell versus $0.92 on the 1 lb cell in this example — but it is the same multiplier. The calculator’s fulfillment row already includes it.

Does this page include Extra-Large 50+ lb bands or the Overmax handling fee?

No. amazon.ts stores one Extra-Large base ($25.56 / $26.33 / $26.33) plus $0.38/lb above the first pound — the 0–50 lb card. Official 50–70, 70–150, and 150+ lb Extra-Large rows use different bases and a different per-pound adder. Overmax (longest side over 96″ or length-plus-girth over 130″) is a separate surcharge and is not in this file. If shipping weight is above 50 lb or the carton trips Overmax, stop using this table and verify in Seller Central.