You find a product on Alibaba for USD 3.50 per unit. You plan to sell it on Amazon for USD 24.99. Quick mental math says you are making USD 21 per unit. Reality: after shipping, duties, FBA fees, PPC, returns, and storage, your actual profit is closer to USD 4–6 per unit — if you are doing everything right. This guide shows you exactly where the money goes.
The full cost stack for Amazon FBA imports
Every dollar of revenue from an FBA sale gets divided across these cost layers:
- Product cost (FOB from supplier)
- Shipping to the US (freight + insurance)
- Import duties and fees
- Prep and inbound shipping to FBA
- Amazon referral fee
- Amazon FBA fulfillment fee
- Amazon storage fees
- PPC advertising
- Returns and refunds
- Miscellaneous (photography, tools, samples, giveaways)
Let's break down each one with real 2026 numbers.
Layer 1: Product cost
Your supplier's FOB price. For most private-label FBA products sourced from China, this ranges from USD 1.50 to USD 8.00 per unit. The sweet spot for beginners is USD 2.00–5.00 — high enough to indicate reasonable quality, low enough to maintain margins at a USD 19.99–34.99 retail price.
Remember: FOB means the supplier delivers to the port of loading. Everything after that is your cost. See our China import guide for sourcing details.
Negotiation impact
A 10% reduction in product cost flows directly to your bottom line. On a 2,000-unit order at USD 4.00/unit, negotiating down to USD 3.60 saves USD 800 — pure profit. Always negotiate, especially on reorders when you have leverage from proven sales volume.
Layer 2: Shipping to the US
Cost depends on shipping method, product size/weight, and current market rates:
Ocean freight (most FBA sellers)
- LCL (under 10 CBM): USD 55–95 per revenue ton. A typical first FBA order (2,000 units, 3–5 CBM) costs USD 300–500 in freight.
- FCL 20-foot: USD 1,800–3,400 all-in to US West Coast. Best value if you can fill it (28+ CBM).
- FCL 40-foot: USD 2,800–4,800. For larger sellers doing 5,000+ units per order.
Air freight (for fast restocks or lightweight goods)
- USD 3.50–8.00 per kg. A 500-unit restock of lightweight items (200 kg) costs USD 700–1,600.
- Use air when: you are about to stock out, the product is lightweight and high-margin, or you need to test a new product quickly.
Sea + express hybrid
Some forwarders offer "fast sea" services (sea freight to a US port, then express delivery to FBA warehouses) at rates between pure ocean and air. Transit 18–22 days. Good middle ground.
Per-unit shipping cost example: 2,000 units, 4 CBM, 350 kg, ocean LCL to US West Coast = approximately USD 400 freight + USD 120 origin charges = USD 520 total = USD 0.26/unit.
For detailed shipping costs, see our China-to-USA shipping guide.
Layer 3: Import duties and fees
This is where many FBA sellers get blindsided — especially with Section 301 tariffs on Chinese goods.
Duty calculation
Duty = Customs Value × (MFN Rate + Section 301 Rate)
Customs value for US imports is typically the transaction value (FOB price). Example:
- Product: silicone kitchen utensil set
- HS code: 3924.10 (tableware/kitchenware of plastics)
- MFN duty rate: 3.4%
- Section 301 rate: 25%
- Total duty rate: 28.4%
- On USD 4.00 FOB × 2,000 units = USD 8,000 customs value
- Duty: USD 8,000 × 28.4% = USD 2,272 = USD 1.14/unit
Other import fees
- MPF (Merchandise Processing Fee): 0.3464% of value (min USD 31.67, max USD 614.35)
- HMF (Harbor Maintenance Fee): 0.125% of value (ocean only)
- Customs brokerage: USD 150–350 per entry
- ISF filing: USD 35–60
- Customs bond: USD 300–500/year (continuous) or USD 50–100 (single entry)
Total import fees for our example: USD 2,272 duty + USD 28 MPF + USD 10 HMF + USD 195 brokerage + USD 45 ISF = USD 2,550 = USD 1.28/unit.
Use our tariff calculator to check rates for your specific product before sourcing.
Layer 4: Prep and inbound to FBA
Getting goods from the US port into Amazon's fulfillment centers:
Option A: Direct to FBA (cheapest)
- Drayage from port to FBA warehouse: USD 300–600
- Requires supplier to prep goods to Amazon standards (FNSKU labels, poly bags, etc.)
- Risk: if Amazon rejects the shipment, you pay return shipping + re-prep
- Per-unit cost: USD 0.15–0.30
Option B: Via prep center (recommended for most sellers)
- Drayage to prep center: USD 200–400
- Inspection: USD 0.10–0.25/unit
- FNSKU labeling: USD 0.15–0.30/unit
- Poly bagging: USD 0.15–0.25/unit
- Bundling/kitting (if applicable): USD 0.50–1.50/unit
- Outbound to FBA (SPD or LTL): USD 0.20–0.50/unit
- Per-unit cost: USD 0.50–1.50
Option C: Your own warehouse
- Highest control, highest fixed cost
- Only makes sense at 10,000+ units/month
For our example (prep center): USD 0.75/unit average.
Layer 5: Amazon referral fee
Amazon charges a referral fee on every sale — a percentage of the total sale price (including shipping if you charge it). Rates by category:
- Most categories (Home, Kitchen, Sports, Toys, etc.): 15%
- Clothing and accessories: 17%
- Electronics: 8%
- Grocery: 8–15% (tiered)
- Jewelry: 20% (first USD 250), 5% above
- Amazon device accessories: 45%
For a USD 24.99 product in the Home category: USD 24.99 × 15% = USD 3.75.
Layer 6: FBA fulfillment fee
Amazon charges per unit to pick, pack, and ship to the customer. Rates depend on size tier and weight (2026 rates):
Standard-size items
- Small standard (≤ 15 oz, ≤ 15×12×0.75 in): USD 3.22
- Large standard (≤ 3 lb, ≤ 18×14×8 in): USD 4.75–5.40
- Large standard (3–20 lb): USD 5.40–6.75+
Oversize items
- Small oversize: USD 9.73+
- Standard oversize: USD 13.04+
- Large oversize: USD 89.98+
For our example (kitchen utensil set, 1.2 lb, fits large standard): USD 5.10.
Layer 7: Storage fees
Amazon charges monthly storage based on cubic feet of space your inventory occupies:
- January–September: USD 0.78/cubic foot
- October–December: USD 2.40/cubic foot (peak season)
- Aged inventory surcharge (181–270 days): USD 1.50/cubic foot
- Aged inventory surcharge (271–365 days): USD 3.80/cubic foot
- Aged inventory surcharge (365+ days): USD 6.90/cubic foot or USD 0.15/unit, whichever is greater
Good inventory management means 30–60 days of stock on hand. At 45 days average and 0.3 cubic feet per unit: USD 0.78 × 0.3 × 1.5 months = USD 0.35/unit average storage cost.
Bad inventory management (90+ days, hitting Q4 peak rates): can easily reach USD 1.50–3.00/unit. This is where slow-moving products kill profitability.
Layer 8: PPC advertising
Amazon PPC (Sponsored Products, Brands, Display) is effectively mandatory for new products. Without advertising, your listing has no visibility and no sales velocity to trigger organic ranking.
Typical PPC metrics (2026)
- Average CPC (cost per click): USD 0.80–1.50 for competitive categories, USD 0.40–0.80 for less competitive
- Conversion rate: 10–15% for well-optimized listings
- ACoS (Advertising Cost of Sale): 20–35% during launch, 15–25% at steady state
- TACoS (Total ACoS including organic): 8–15% at maturity
What this means per unit
At a USD 24.99 price point with 25% ACoS: USD 24.99 × 25% = USD 6.25 ad spend per attributed sale. But not every sale comes from ads — at maturity, maybe 40% of sales are PPC-driven. Blended ad cost per unit: USD 6.25 × 40% = USD 2.50/unit.
During launch (first 30–60 days), expect 60–80% of sales from PPC at 30–40% ACoS. Launch-phase ad cost: USD 5.00–8.00/unit. Budget accordingly.
Layer 9: Returns and refunds
Amazon's generous return policy means you eat the cost of returns:
- Average return rate: 5–15% depending on category (apparel 15–25%, electronics 8–12%, home goods 5–8%)
- Cost per return: lost sale + FBA return processing fee (USD 2.12–5.00) + potential product unsellable
- Refund administration fee: Amazon keeps 20% of the referral fee on refunded orders
For our example (home category, 7% return rate, 50% of returns unsellable):
- 7% of units returned × (USD 5.10 fulfillment already spent + USD 3.50 return processing) = USD 0.60/unit sold
- Lost product cost on unsellable returns: 7% × 50% × USD 5.54 landed cost = USD 0.19/unit sold
- Total return cost: USD 0.79/unit
Layer 10: Miscellaneous costs
Often forgotten but they add up:
- Product photography: USD 200–500 per listing (amortize over lifetime sales)
- Listing copywriting/optimization: USD 100–300
- Product samples (during sourcing): USD 100–300
- Software tools (Helium 10, Jungle Scout, etc.): USD 50–100/month
- Product liability insurance: USD 500–1,500/year (required by Amazon for most sellers)
- Trademark registration (for Brand Registry): USD 250–350 (USPTO filing)
- Giveaways/promotions during launch: USD 200–500
Amortized across a year of sales (say 12,000 units): USD 0.15–0.30/unit.
The complete picture: Worked example
Let's put it all together for our silicone kitchen utensil set:
| Cost Layer | Per Unit (USD) | % of Revenue |
|---|
| Sale price | 24.99 | 100% |
| Product cost (FOB) | 4.00 | 16.0% |
| Shipping (ocean LCL) | 0.26 | 1.0% |
| Import duties + fees | 1.28 | 5.1% |
| Prep + inbound to FBA | 0.75 | 3.0% |
| Amazon referral fee (15%) | 3.75 | 15.0% |
| FBA fulfillment fee | 5.10 | 20.4% |
| Storage fees | 0.35 | 1.4% |
| PPC advertising | 2.50 | 10.0% |
| Returns cost | 0.79 | 3.2% |
| Miscellaneous | 0.20 | 0.8% |
| Total costs | 18.98 | 75.9% |
| Net profit | 6.01 | 24.1% |
USD 6.01 profit on a USD 24.99 sale — a 24% net margin. That is actually a good result for FBA. Many sellers are at 15–18% because of higher PPC costs or lower price points.
The minimum viable margin
Based on the cost structure above, here are the rules of thumb for FBA product viability:
- Minimum sale price: 3× to 5× your landed cost (product + shipping + duties). Our example: USD 5.54 landed × 4.5 = USD 24.93. ✓
- Minimum gross margin (before PPC): 35%+ after Amazon fees. Below this, PPC will eat your profit.
- Target net margin: 20%+ at steady state. Below 15%, one bad month of PPC or a spike in returns wipes out your profit.
- Maximum product cost: Should not exceed 30% of sale price after duties. If duties push your landed cost above 30% of retail, the product is likely not viable for FBA.
How Section 301 tariffs change the math
Let's compare the same product with and without Section 301:
| Scenario | Duty/Unit | Net Profit/Unit | Net Margin |
|---|
| Without Section 301 (3.4% MFN only) | USD 0.14 | USD 7.15 | 28.6% |
| With Section 301 (3.4% + 25%) | USD 1.14 | USD 6.01 | 24.1% |
| Difference | +USD 1.00 | -USD 1.14 | -4.5% |
Section 301 costs this seller USD 1.14/unit × 12,000 units/year = USD 13,680/year in extra duties. For some product categories with 25% Section 301 rates on higher-value goods, the impact is even larger.
Mitigation strategies
- Source from non-China countries: Vietnam, India, Thailand, Cambodia. May have higher product costs but zero Section 301.
- Raise prices: If competitors also source from China, the entire market absorbs the tariff. Test price increases.
- Optimize HS classification: Some products can legitimately classify under codes with lower or zero Section 301 rates.
- Use First Sale rule: If buying through a middleman, you may be able to use the manufacturer's price (first sale) as customs value instead of the middleman's price.
Hidden costs that kill FBA margins
Aged inventory surcharges
If your product sits in FBA for more than 180 days, surcharges kick in. A slow-moving product can accumulate USD 3–7/unit in storage surcharges — wiping out all profit. Solution: monitor inventory age weekly, run promotions or liquidate before 180 days.
Inbound placement fees
Amazon's 2024+ inbound placement service fee charges USD 0.21–1.58/unit if you send inventory to a single warehouse (which Amazon then distributes). To avoid this, use Amazon's Optimized Shipment Splits — but that means splitting your shipment to multiple warehouses, increasing your logistics complexity.
Low inventory level fee
Amazon now charges a fee when your inventory drops below 28 days of supply for products with consistent sales. This penalizes stockouts and encourages overstocking — which then risks aged inventory surcharges. The balance is maintaining 30–60 days of stock.
Refund clawbacks
When a customer returns a product, Amazon refunds them immediately but takes 45 days to process your reimbursement. If the product is unsellable, you get nothing back. Track your reimbursements — Amazon makes errors in their favor roughly 1–3% of the time.
Optimizing your cost structure
Reduce product cost
- Negotiate on reorders (you have sales data as leverage)
- Increase order quantity for volume discounts
- Simplify packaging (supplier-side prep saves prep center costs)
- Consider alternative materials or designs that reduce manufacturing cost
Reduce shipping cost
- Consolidate orders to fill containers (FCL vs LCL saves 30–50% per unit)
- Optimize product packaging to reduce dimensional weight
- Use sea freight for regular replenishment, air only for emergencies
- Negotiate annual freight contracts if shipping monthly
Reduce supplier payment costs
- Stop using bank wires for supplier payments — the 2–4% FX markup your bank charges is pure waste
- Use Wise Business for supplier T/T payments (mid-market rate, 0.4–0.7% fee vs bank's 2–4%)
- On monthly USD 10K orders, that is USD 150–300/month saved — USD 1,800–3,600/year straight to your margin
Reduce Amazon fees
- Optimize packaging dimensions to stay in a lower size tier (even 1 inch can change your tier)
- Reduce weight where possible (lighter = lower fulfillment fee)
- Maintain healthy inventory levels (avoid aged surcharges and low-inventory fees)
- Use Subscribe & Save to reduce PPC dependency
Reduce PPC cost
- Optimize listing (better conversion rate = lower effective CPC)
- Build organic ranking through external traffic, social media, email lists
- Use exact match keywords for proven converters, broad match for discovery
- Negative keyword management (stop paying for irrelevant clicks)
- Target TACoS of 8–12% at maturity
When FBA does not make sense
FBA is not always the right fulfillment method. Consider alternatives when:
- Product is oversized/heavy: FBA fees for oversize items are brutal. Consider FBM (Fulfilled by Merchant) or 3PL.
- Low price point (under USD 15): FBA fees consume too much of the revenue. The math rarely works below USD 15 retail.
- Very slow-moving: If you sell fewer than 1 unit/day, storage fees accumulate and aged surcharges become a risk.
- Fragile/high-return products: Amazon's handling is not gentle. If your product has a high damage/return rate in FBA, consider FBM with better packaging.
- Customized products: FBA cannot handle customization. Use FBM or a 3PL with custom capabilities.
Your pre-sourcing checklist
Before committing to any FBA product, calculate:
- Landed cost (product + shipping + duties) — use our landed cost guide
- Amazon fees (referral + FBA fulfillment + storage) — use Amazon's Revenue Calculator
- Estimated PPC cost (research competitor ad spend and category CPCs)
- Return rate for the category (check Amazon's category return data)
- Net margin target: is it above 20%?
If the numbers do not work at realistic assumptions, move on to the next product. The graveyard of failed FBA businesses is full of sellers who launched products with 10% margins and hoped to "optimize later."
Bottom line
Amazon FBA is a viable business model, but only if you understand the true cost structure. The gap between your supplier's FOB price and your actual profit is filled with duties, fees, advertising, and operational costs that consume 70–80% of your revenue. Know your numbers before you source, track them obsessively after you launch, and optimize relentlessly. Start with our duty calculator to understand your tariff exposure, then build your full cost model from there.