FBA vs FBM calculator
Compare Fulfillment by Amazon with shipping orders yourself, side by side, with the 2026 fees, peak rates and surcharge applied.
Questions
Is FBA or FBM cheaper?
It depends on size, weight and price. Small, light products usually cost less through FBA because Amazon's rates beat most retail shipping labels. Heavy, bulky or slow-selling products often do better merchant-fulfilled, especially in Q4 when FBA peak fees and storage rates rise.
What does the break-even shipping cost mean?
It is the total you could spend per order on your own label, packaging and labor and still earn exactly what FBA earns. If your real cost is lower, FBM makes more per unit.
Does this include the Prime sales advantage?
Only if you enter one. FBA listings are Prime-eligible, which often lifts conversion, but the size of the lift varies widely, so it is your input rather than a number we assume.