Quick answer. A $24.99 Home & Kitchen item, packaged at 8 × 5 × 4 inches and 1 lb 3 oz, sold in a non-peak month with a Professional plan allocated across 100 units, $8 product cost and $0.50 inbound, keeps $7.05 after Amazon fees of $9.44 (28.2% margin, 82.9% ROI). In the current holiday peak window with Q4 storage, the same unit keeps $6.59 after $9.90 in Amazon fees. FBM on the same numbers, with a $4 shipping cost and $0 charged to the buyer, keeps $8.84 because there is no FBA fulfillment or storage fee.
How to use the Amazon FBA calculator
- Enter the selling price and category. The category sets the referral fee. Use Amazon’s fee category, which is not always the same as the browse category customers see.
- Add packaged dimensions and weight. Measure the unit as it will ship, including polybags or boxes. The calculator picks a size tier and shipping weight, including dimensional weight where Amazon uses it.
- Choose FBA or FBM, the fee period and your selling plan. Holiday peak fulfillment runs 15 October 2026–14 January 2027. Storage is cheaper from January to September than in Q4. Enter monthly unit volume so the $39.99 Professional plan can be spread across units.
- Fill in your costs. Product cost, inbound freight to Amazon (FBA), your own postage (FBM), and optional ad spend or other costs. Net profit, margin, ROI and break-even price update as you type.
How Amazon fees work
Amazon’s cut is several separate charges, not one percentage. This tool adds the ones you can calculate from a price, a category and a packaged size.
- Referral fee. A percentage of the total sales price (item + shipping charged to the buyer + gift wrap), or a per-item minimum, whichever is greater. Most categories are 15% with a $0.30 minimum. Computers and consumer electronics are 8%. Clothing uses 5%, 10% or 17% depending on the whole price. Furniture, jewelry, watches and some appliance and accessory categories apply a lower rate only to the portion of the price above a threshold. Media items also pay a $1.80 closing fee.
- FBA fulfillment fee. A per-unit pick, pack and ship charge that depends on size tier, shipping weight and price band (under $10, $10–$50, or over $50). The $10 and $50 points use the middle band. Holiday peak uses a higher card. A 3.5% fuel and logistics surcharge (in effect since 17 April 2026) is then added on the fulfillment fee.
- Monthly storage. Charged on the packaged volume in cubic feet. Standard-size is $0.78 per cubic foot from January to September and $2.40 from October to December. Bulky and extra-large (oversize) storage is $0.56 and $1.40 in those same periods. The figure here is one month of storage for one unit, which is a simple stand-in for inventory that turns in about a month.
- Selling plan. Professional is $39.99 a month, allocated across the monthly units you enter (the break-even versus Individual is 40 units). Individual is $0.99 on every item sold and has fewer listing tools.
FBA vs FBM
FBA is usually more expensive per unit, but it includes Prime delivery, Amazon customer service and returns handling. FBM avoids the fulfillment and storage fees; you pay your own postage and handle service yourself. The comparison table uses the same price, category, product cost and plan fee for both sides. Switch to FBM to edit your own shipping cost. If FBM profit looks much higher, check that the shipping cost you entered is realistic for the service level you actually offer.
Formulas
- Total sales price = selling price + shipping charged to the buyer.
- Referral fee = the greater of (category rate × total sales price) or the category minimum. Portion categories apply each rate only to the slice of price in that band.
- Dimensional weight = length × width × height ÷ 139 (inches and pounds). For bulky and extra-large, width and height are treated as at least 2 inches.
- Shipping weight = unit weight for small standard (and extra-large over 150 lb); otherwise the greater of unit weight and dimensional weight.
- FBA fulfillment + fuel = rate-card fee + (rate-card fee × 3.5%).
- Storage per unit = (L × W × H ÷ 1,728) × the period rate for standard or oversize.
- Total Amazon fees = referral + closing fee + (FBA: fulfillment + fuel + storage) + plan fee per unit.
- Net profit = total sales price − Amazon fees − product cost − inbound (FBA) or your shipping (FBM) − ads − other costs.
- Margin % = net profit ÷ total sales price. ROI % = net profit ÷ (product cost + inbound or your shipping + ads + other costs).
- Break-even price is the lowest item price at which net profit is at least $0, searched separately in the under-$10, $10–$50 and over-$50 fulfillment bands so a fee jump cannot hide the crossing.
Worked examples
All three use a Professional plan and 100 units a month unless noted. Fulfillment fees below are the non-apparel 2026 card, plus the 3.5% surcharge.
| Example | Amazon fees | Your costs | Net profit |
|---|---|---|---|
| $24.99 Home & Kitchen, 8 × 5 × 4 in, 1 lb 3 oz, FBA, non-peak, Jan–Sep storage, $8 product + $0.50 inbound | $9.44 Referral $3.75 · FBA $5.04 · fuel $0.18 · storage $0.07 · plan $0.40 | $8.50 | $7.05 (28.2% margin, 82.9% ROI). Break-even price $16.69. |
| Same item, FBA, holiday peak fulfillment and October–December storage | $9.90 Referral $3.75 · FBA $5.34 · fuel $0.19 · storage $0.22 · plan $0.40 | $8.50 | $6.59 (26.4% margin, 77.5% ROI). |
| Same item, FBM, $4 of your shipping, $0 charged to the buyer | $4.15 Referral $3.75 · plan $0.40 (no FBA fulfillment or storage) | $12.00 | $8.84 (35.4% margin). |
A $15.99 paperback (Media), 8 × 5.5 × 0.7 in and 10 oz, FBA non-peak, $4 product + $0.30 inbound, plan allocated over 50 units, pays a $2.40 referral fee plus the $1.80 closing fee, $3.68 fulfillment, $0.13 fuel, about $0.01 storage and $0.80 plan — $8.82 in Amazon fees and $2.87 profit.
What this calculator does not include
Several real FBA charges depend on inventory health or inbound choices, so they are left out rather than guessed:
- Low-inventory-level fees (when days of supply fall below 28 on standard-size or bulky units)
- Aged-inventory and storage-utilization surcharges
- Inbound placement service fees (often $0 if you use Amazon-optimized shipment splits)
- Returns processing fees, removal, disposal and liquidation
- Ships in Product Packaging (SIPP) discounts or non-certified bulky packaging fees
- Apparel and dangerous-goods fulfillment cards, which are higher than the standard card used here
- The Overmax surcharge on some extra-large units over 96 inches on the longest side or 130 inches in length plus girth
2027 fulfillment and storage changes (announced 5 November 2026, mostly effective 15 January and 1 February 2027) are not used. Until those dates, the 2026 schedule still applies.
Frequently asked questions
How much does Amazon take from a sale?
On a typical standard-size US product, Amazon’s cut is usually around 30–40% of the selling price: a category referral fee (often 15% with a $0.30 minimum), an FBA fulfillment fee based on size, weight and price, a 3.5% fuel and logistics surcharge on that fulfillment fee, and a small monthly storage charge. Professional sellers also pay $39.99 a month; Individual sellers pay $0.99 per item. This calculator adds those lines up so you can see net profit.
What is the difference between FBA and FBM fees?
Every Amazon sale pays the referral fee (and the $1.80 media closing fee in Books, DVD, Music, Software and Video). FBA adds Amazon’s pick, pack and ship fee, the 3.5% fuel surcharge, and monthly inventory storage. FBM (Fulfilled by Merchant) skips those FBA charges; you keep your own shipping cost instead. Referral fees and the selling-plan fee still apply either way.
What is the 3.5% fuel and logistics surcharge?
Since 17 April 2026, Amazon has added a 3.5% fuel and logistics surcharge on top of US FBA fulfillment fees. It is calculated on the fulfillment fee, not on the selling price, and it also applies during the holiday peak period. Amazon’s published rate cards do not include it, so a $5.04 fulfillment fee is $5.22 after the surcharge. This calculator shows the surcharge as its own line.
When do holiday peak FBA fees apply?
Holiday peak fulfillment fees apply from 15 October 2026 through 14 January 2027. The fee is set by the date the unit ships from the fulfillment center, not the order date. Monthly storage uses a different calendar: January–September rates versus higher October–December rates. In November 2026 both peak fulfillment and Q4 storage are in effect — that is the calculator’s default.
How does Amazon decide size tier and shipping weight?
Size tier comes from the packaged length, width, height and weight. Small standard is up to 16 oz and 15 × 12 × 0.75 inches, and it uses unit weight only. Larger tiers use the greater of unit weight and dimensional weight (length × width × height ÷ 139). Small bulky, large bulky and extra-large items use a 2-inch minimum on the two shorter sides when dimensional weight is calculated. Large standard is up to 20 lb and 18 × 14 × 8 inches; above that the item moves into bulky or extra-large.
Does this include the low-inventory-level fee or other surcharges?
No. The total is an estimate of referral fees, the media closing fee where it applies, 2026 non-apparel FBA fulfillment fees, the 3.5% fuel surcharge, base monthly storage, and your selling-plan fee. It does not include the low-inventory-level fee, aged-inventory or storage-utilization surcharges, inbound placement, returns processing, SIPP discounts, apparel or dangerous-goods rate cards, or the Overmax surcharge on some extra-large items. Confirm the final figure in Amazon’s Revenue Calculator or your Fee Preview report.
Are the 2027 Amazon fee changes included?
No. Amazon announced 2027 US referral and FBA updates on 5 November 2026. New fulfillment fees and size tiers take effect on 15 January 2027, and a simplified storage fee starts on 1 February 2027. Until then this tool uses the 2026 US schedule that has been in effect since 15 January 2026, including current holiday peak fulfillment rates. We will need a separate update for 2027.
Is anything I type saved?
No. The calculator runs in your browser and nothing is stored or sent. Your prices and costs stay on your device.
Sources and last check
Fee figures were last checked on 11 November 2026 against the official pages below. Amazon changes fees, and some Seller Central help pages require a login, so confirm the numbers in your own seller account before you set a price.
- Amazon — How much does it cost to sell on Amazon? (selling plans and US referral fees)
- Amazon Selling Partners — 2026 US Referral and FBA fee update (effective 15 January 2026)
- Amazon Seller Central — FBA fulfillment fee rates (US 2026 rate card)
- Amazon Seller Central — Selling on Amazon fee schedule (referral fees)
- Amazon Selling Partners — 2027 US Referral and FBA fee update (not used in this calculator)
Fulfillment dollar amounts follow Amazon’s 2026 US non-apparel rate card (non-peak from 15 January 2026, holiday peak from 15 October 2026 to 14 January 2027) and the 3.5% fuel surcharge announced for 17 April 2026. Seller Central’s rate-card page is sign-in gated from this environment; the tables were cross-checked against Amazon’s published 2026 announcement and against independent reproductions of the same official card. Storage rates are the 2026 base monthly rates of $0.78 / $2.40 per cubic foot (standard) and $0.56 / $1.40 (oversize).
Nothing you type is stored or sent — the math runs in your browser. Pair this with the Etsy Fee & Profit Calculator, Shopify & eBay Fee Calculator and Profit Margin Calculator when you sell in more than one marketplace.