FBA

Fulfillment by Amazon - sellers ship inventory to Amazon warehouses for storage and fulfillment.

1 min readLast updated Apr 2026

Reviewed by Golden Digital·Operator-reviewed ecommerce reference

Quick Reference

CategoryFulfillment & Operations

Related Terms2

Fulfillment by Amazon - sellers ship inventory to Amazon warehouses for storage and fulfillment.

Why It Matters

FBA unlocks Amazon Prime eligibility, massively increasing conversion on Amazon. It outsources fulfillment complexity and provides 1-2 day shipping that customers expect. For brands selling on Amazon, FBA is often essential to compete despite the fees.

Practical Example

Scenario

A supplements brand tests FBA vs FBM (self-fulfillment) for their Amazon listings.

Calculation

FBM: 2.1% conversion, $45 margin. FBA: 5.8% conversion, $38 margin (after fees). Volume: FBM 420 units/month, FBA 1,160 units/month

Result

Despite lower per-unit margin, FBA generates $44,080/month profit vs $18,900 FBM—2.3x more profit due to Prime-driven conversion.

Pro Tips

1Use FBA revenue calculator to understand true profitability after all fees
2Optimize packaging dimensions to minimize dimensional weight fees
3Monitor IPI (Inventory Performance Index) to avoid storage limits
4Remove slow-moving inventory before long-term storage fees hit

Common Mistakes to Avoid

Sending too much inventory and incurring long-term storage fees

Not accounting for all FBA fees in margin calculations

Ignoring IPI score until storage limits are imposed

Frequently asked questions

Main fees: fulfillment fee (pick, pack, ship—varies by size/weight), monthly storage ($0.75-2.40/cubic foot), long-term storage (after 365 days), removal fees if you want inventory back. Total typically adds $3-8 per unit depending on size. Use Amazon's calculator for exact numbers.

Yes, Multi-Channel Fulfillment (MCF) lets FBA fulfill Shopify and other orders. Fees are higher than Amazon-only FBA, but it consolidates inventory. Evaluate against dedicated 3PLs—MCF makes sense if Amazon is your primary channel.

Put it to work

Related Terms

FBM

Fulfillment by Merchant - sellers handle their own fulfillment for marketplace orders.

Amazon Prime

Amazon's membership program offering free fast shipping. Products must meet requirements for Prime badge.

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FBA