Run any product through the current 2026 Amazon FBA fee schedule. Fulfillment, storage, referral, and inbound placement — all itemized. Updates as you type.
Amazon FBA charges three layers of fees: a per-unit fulfillment fee based on the product's size tier and weight, a monthly storage fee based on cubic feet of warehouse space, and a referral fee taken as a percentage of every sale. For most consumer-product sellers, total Amazon fees end up at 25-35% of the selling price.
The size tier drives a meaningful chunk of profit math. A product that fits Small Standard (under 15×12×0.75 inches, under 1 lb) pays roughly $3.27 to ship. The same product in Large Bulky pays $9.61 plus weight adders. Designing products to fit Small Standard, when feasible, is one of the cheapest profit optimizations available.
Dimensional weight matters for everything above Small Standard. Amazon takes the greater of actual weight and dimensional weight (L × W × H ÷ 139), so a light but bulky product pays as if it were heavier. This calculator computes both and shows the shipping weight Amazon will use.
Referral feesare category-specific and surprisingly variable. Electronics is 8%. Beauty, Home, Pet, and most consumer categories are 15%. Apparel jumps to 17%, Jewelry to 20%. Building a product into a category mix that includes Apparel or Jewelry can change your margin math by hundreds of basis points; it's worth checking the category code on similar listings before pricing.
Monthly storage compounds slowly. The Q1-Q3 standard rate ($0.87/cu ft) is manageable for most products; Q4 (Oct-Dec) jumps to roughly $2.40/cu ft. Long-term storage surcharges hit at 365+ days. For slow-moving inventory, FBM or 3PL fulfillment often wins on math despite the operational overhead.
Inbound placement fees were added in 2024. Sellers can opt for cheaper multi-warehouse splits or pay more for single-warehouse direct shipment. This calculator shows the lowest-cost option; for higher-velocity launches that need fastest cross-country availability, the premium option pays back.
Does: approximate the 2026 FBA fee schedule for US marketplace, compute dimensional weight, calculate referral fee by category, estimate monthly storage and inbound placement, and produce a net profit per unit. Updates live as you change inputs.
Doesn't: account for Q4 peak storage surcharges (estimate is Q1-Q3 baseline; multiply by ~2.7 for Q4), long-term storage penalties (after 365 days), removal fees, returns processing fees, advertising spend, or international marketplace fee variations. For exhaustive scenario modeling on a large SKU portfolio, dedicated tools like Sellerboard or Datahawk are better.
We update the rate card as Amazon revises it. The most recent revision in our calculator is for the Q1 2026 fee schedule.