What it does
Enter your price, product cost, referral category, FBA size tier, your own cost to pick, pack and ship, and optionally your monthly units. The calculator compares profit per unit for FBA and for FBM.
Free tool
Amazon FBA vs FBM calculator
Compare what you keep per unit when Amazon fulfills the order and when you do it yourself.
Amazon FBA vs FBM break-even calculator
Enter your product's numbers. The per-unit cost comparison updates as you type.
What you pay per unit: manufacturing + inbound shipping to Amazon. Everything except Amazon's fees, fulfilment, and ad spend.
Amazon's commission on each sale. It's the same for FBA and FBM, so it cancels out of the comparison, but it still sets each channel's profit.
2026 $10–$50 base rate. The calculator applies the Low-Price FBA discount under $10 and the higher rate over $50, then adds the 3.5% fuel surcharge.
Your own pick, pack, mailer/box, and outbound shipping per unit.
Units you sell per month. Scales the per-unit gap into a monthly dollar difference.
Verdict
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What you keep per unit
FBA profit / unit
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FBM profit / unit
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Break-even self-fulfillment cost
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Below this, your own fulfilment is cheaper on cost. Above it, FBA wins on cost alone, before any Prime / Buy Box lift.
Monthly difference
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Cost isn't the whole story. FBA also buys Prime eligibility and typically a higher Buy Box
win rate and conversion rate. That is real lift this pure per-unit cost comparison can't capture. FBA often wins on total profit even when its
per-unit cost is the higher of the two.
2026 US base rates. The FBA fulfillment fee includes the 3.5% fuel and logistics surcharge Amazon applies to every unit since April 17, 2026; it excludes monthly storage and optional fees. FBM cost is your own estimate. Amazon's Seller Central fee schedule is authoritative: confirm your product's exact fees there.
About this calculator
How to read the result
The verdict says which channel keeps more per unit and by how much. The break-even self-fulfillment cost is where the two tie: ship for less and FBM is cheaper on cost, ship for more and FBA is. The monthly difference multiplies the gap by your units. This is a cost comparison only; it leaves out Prime and Buy Box effects.
The formula in plain words
The referral fee is the same in both channels, so it cancels out of the comparison. The gap per unit is the FBA fee (with the 3.5% fuel and logistics surcharge) minus your own fulfillment cost. Monthly difference is that gap, rounded to cents, times your monthly units.
WisePPC shows what each product earns after Amazon's fees, from your own account data, so the comparison starts from real numbers.
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