# Amazon FBA vs Amazon FBM: Fees Compared

Compare the fee structures of Amazon FBA and Amazon FBM side by side to find which platform gives you better margins.

## Amazon FBA vs Amazon FBM: What's Different?

FBA (Fulfilled by Amazon) and FBM (Fulfilled by Merchant) are two fulfillment methods on the same marketplace. Both pay identical referral fees (8-15%), but FBA adds fulfillment fees ($3.22+ for small standard items, scaling with size and weight), monthly storage fees ($0.78-$2.40/cubic foot), and potential long-term storage surcharges. FBM sellers handle their own shipping, storage, and customer service.

On a pure Amazon fee basis, FBM is cheaper — you avoid all FBA fulfillment and storage charges. However, FBM sellers must account for their own shipping costs (postage, packaging, labor), warehouse/storage space, and customer service time. When you factor in the true cost of self-fulfillment, the difference narrows significantly. For sellers shipping fewer than 20-30 orders per day, FBM can be more cost-effective. At higher volumes, FBA's economies of scale often win.

Beyond cost, FBA provides critical advantages: Prime badge eligibility (dramatically improving conversion rates), Buy Box preference, hands-off returns processing, and two-day shipping that most FBM sellers can't match. FBM sellers retain more control over packaging, branding inserts, and shipping timelines. The choice often comes down to whether the Prime badge's conversion boost is worth FBA's additional fees.

## Compare Fees on the Same Product

### Enter Product Details (same product, both platforms)

**Product Price**: $  
**Cost of Goods**: $  
**Shipping Cost**: $

#### Amazon FBA
- Total Fees: $8.59  
- Profit: $9.40  
- Margin: 31.3%

#### Amazon FBM
- Lower fees  
- Total Fees: $4.50  
- Profit: $13.49  
- Margin: 45.0%

Amazon FBM saves you $4.09 in fees per sale.

## Fee Structure Comparison

| Fee Type               | Amazon FBA | Amazon FBM |
|------------------------|------------|------------|
| Referral / Commission   | 15%        | 15%        |
| Payment Processing      | Included   | Included   |
| Fulfillment Fee        | $3.22      | N/A        |
| Monthly Subscription    | None       | None       |
| Listing Fee             | None       | None       |

## Which Is Better For...

### Best for winning the Buy Box

Amazon FBA  
Amazon's algorithm gives FBA sellers a significant advantage in Buy Box placement. The Prime badge signals fast, reliable shipping, which Amazon prioritizes. FBM sellers can win the Buy Box but need competitive pricing and excellent seller metrics. For competitive product categories, FBA's Buy Box advantage directly translates to more sales.

### Best for oversized or heavy items

Amazon FBM  
FBA's fees for oversized items are steep — large items can incur $10-$40+ in fulfillment fees per unit. For heavy, bulky products like furniture or equipment, FBM often makes more sense financially. You can negotiate better shipping rates directly with carriers for large items than what FBA charges.

### Best for slow-moving or seasonal inventory

Amazon FBM  
FBA charges monthly storage fees that increase during Q4, plus long-term storage surcharges for items sitting longer than 180 days. If your products sell slowly or are highly seasonal, FBM avoids these holding costs. You can store inventory in your own space without per-cubic-foot charges.

## Frequently Asked Questions

### Can I use both FBA and FBM for the same product?  
### How much does FBA really cost per unit?  
### Do FBM sellers lose the Prime badge?  
### Which option is better for products with high return rates?  
### How do long-term storage fees work with FBA?