Amazon FBA Calculator
Calculate Amazon referral fees, 2026 FBA fulfillment fees (including the new 3.5% fuel surcharge), and storage costs — then see your per-unit profit, margin, ROI, and monthly totals before you commit to inventory.
Cost per unit from your supplier
Inbound freight to FBA warehouses, divided per unit
Minimum referral fee: $0.30 per item
Small standard: max 16 oz. Uses the greater of unit or dimensional weight (L×W×H ÷ 139) for large standard and bulky.
Per unit (L×W×H ÷ 1,728)
Total Amazon Fees
$9.30
31.0% of sale price
Net Profit / Unit
$11.49
after fees and product costs
Fee Breakdown (per unit)
Margin
38.3%
ROI
125%
Monthly profit
$3,447.90
Monthly Totals (300 units)
Uses Amazon's 2026 non-peak, non-apparel FBA rate card (effective Jan 15, 2026) plus the 3.5% fuel surcharge (effective Apr 17, 2026), verified July 2026. Peak-season (Oct 15–Jan 14) fulfillment fees, apparel, dangerous goods, and extra-large tiers differ. Excludes the $39.99/mo Professional plan, aged-inventory and low-inventory-level fees, and any advertising spend. Verify current rates on sell.amazon.com.
How This Calculator Works
Describe your product
Price, cost, inbound shipping, category, and size tier. The price automatically selects the right 2026 rate column — under $10 gets Low-Price FBA rates, over $50 pays slightly more.
We apply the 2026 rate card
Referral fee by category (minimum $0.30), the exact FBA fulfillment fee for your size and weight band, the 3.5% fuel surcharge, and seasonal storage rates.
Judge the opportunity
Per-unit profit, margin, and ROI plus monthly totals at your volume. Aim for 30%+ margin and 100%+ ROI before launching a private-label product.
How Amazon FBA Fees Work in 2026
Every FBA sale is hit by three fees. The referral feeis Amazon's commission — a percentage of the total sales price with a $0.30 minimum per item. The FBA fulfillment fee pays for pick, pack, and shipping, based on size tier and weight — and since April 17, 2026, it carries a 3.5% fuel and logistics surcharge. Monthly storage is billed per cubic foot and triples during Q4.
Verified July 2026 referral fee rates for common categories:
| Category | Referral Fee |
|---|---|
| Most categories (Home & Kitchen, Toys, Sports, Office, Pet) | 15% |
| Consumer Electronics / Computers | 8% |
| Electronics Accessories | 15% up to $100, 8% above |
| Clothing & Accessories | 5% ≤ $15 · 10% ≤ $20 · 17% above $20 |
| Beauty / Baby | 8% ≤ $10, 15% above |
| Grocery & Gourmet | 8% ≤ $15, 15% above |
| Jewelry | 20% up to $250, 5% above |
| Amazon Device Accessories | 45% |
2026 non-peak fulfillment fee examples (non-apparel, items priced $10–$50, before the 3.5% surcharge): small standard 4–6 oz costs $3.45, large standard 12–16 oz costs $4.60, large standard 1.75–2 lb costs $5.82, and large bulky starts at $9.35 plus $0.38 per pound above the first. Products priced under $10 automatically receive Low-Price FBA rates, saving about $0.86 per unit on average.
FBA vs FBM: Which Should You Use?
With FBA (Fulfillment by Amazon), you ship inventory to Amazon and pay fulfillment plus storage fees; with FBM (Fulfilled by Merchant), you store and ship every order yourself and pay only the referral fee to Amazon.
| Factor | FBA | FBM |
|---|---|---|
| Prime badge | Automatic | Only via Seller Fulfilled Prime (strict requirements) |
| Best for | Small, light, fast-turning products | Oversized, heavy, slow-moving, or fragile items |
| Shipping cost | $3.32–$7+ per unit, all-in | Your postage + boxes + labor |
| Storage risk | Q4 rates triple; aged-inventory surcharges | Your own space, no surprise fees |
| Returns | Amazon handles them | You handle them |
The practical test: compare this calculator's fulfillment fee + storage against your true cost to pick, pack, and ship one unit (postage, materials, and your time at a realistic hourly rate). For a 1-lb item, FBA's ~$4.60–$5.30 all-in is usually cheaper than self-fulfilling with $5–$8 postage alone. For a 40-lb item, FBA bulky fees plus oversize storage often lose to a negotiated carrier rate.
Storage Fees and the Hidden Costs of FBA
Monthly inventory storage (verified July 2026): January–September costs $0.75/cu ft for standard size and $0.48/cu ft for oversize; October–December jumps to $2.40/cu ft and $1.20/cu ft. Storage looks tiny per unit — until inventory stops moving.
- Aged inventory surcharge: units stored over 181 days incur escalating monthly surcharges on top of base storage.
- Low-inventory-level fee: holding under 28 days of supply on standard-size products triggers a per-unit fee — chronic under-stocking costs money too.
- Inbound placement fee: sending everything to one warehouse instead of splitting shipments adds a per-unit charge.
- Returns processing: high-return categories (especially apparel) pay per-return processing fees.
- Peak fulfillment rates: October 15 – January 14 fulfillment fees run roughly $0.20–$0.55 higher per standard-size unit than the non-peak card used here.
A healthy FBA product typically keeps total Amazon fees (referral + fulfillment + storage) under 40% of the sale price, leaving room for product cost and a 25–35% net margin.
Amazon Seller Taxes: What the 1099-K Means for You
Amazon issues a federal Form 1099-K when your gross payments exceed $20,000 AND 200 transactions— the threshold restored by the OBBBA in 2025. Note that some states require a 1099-K at much lower thresholds, so check your state's rules.
The 1099-K shows grosssales — before referral fees, FBA fees, refunds, and advertising. Your taxable profit is what's left after deducting product costs, all Amazon fees, inbound shipping, software, and other business expenses on Schedule C. That net profit is subject to income tax plus 15.3% self-employment tax, and most sellers need to make quarterly estimated payments to avoid IRS penalties.
Frequently Asked Questions
Official References
- Amazon: Selling Plans & Pricing
Official referral fee rates by category, selling plan costs, and monthly storage rates. Verified July 2026.
- Amazon Seller Central: 2026 US FBA Fulfillment Fee Changes
The complete 2026 fulfillment fee rate card (effective Jan 15, 2026) and the 3.5% fuel surcharge (effective Apr 17, 2026). Verified July 2026.
- IRS: Understanding Your Form 1099-K
Official IRS guidance on 1099-K reporting for marketplace sellers.
This calculator provides estimates based on Amazon's published 2026 US fee schedules (verified July 2026). Actual fees depend on measured dimensions and weight, peak-season timing, and program-specific charges. For an official quote on a specific ASIN, use Amazon's Revenue Calculator in Seller Central. Consult a tax professional for advice on your situation.
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