Margin Ruler

FBA Profit Calculator

Calculates FBA fulfillment fee, referral fee, storage residence, and net profit given product cost, price, category, weight, size tier, and months on hand…

Amazon FBA is active. Other marketplace modules stay marked as planned until audited.

Published fee inputs, dated assumptionsNo account or emailPrivate unless you save
Methodology

FBA Profit Calculator. Estimates per-unit FBA profit after unit cost, referral fee, closing fee where applicable, Amazon's 2026 FBA fulfillment fee for the size tier, shipping weight and price band (non-peak or holiday peak by date, including the 3.5% fuel and logistics surcharge), and blended storage multiplied by per-product months on hand.

Fee basis: source-state planning estimate; modeled fee basis is under review and not a Seller Central reconciliation. Last source-state review: 2026-06-07.

Source-state status

planning estimate. Planning estimate — fee basis is source-dated and under review, not a Seller Central reconciliation.

Modeled evidence still current

  • fba fulfillment fee 2026 — Verified against source; last verified 2026-10-09.
  • referral fee 2026 — Fee basis review is overdue (stale after 2026-10-23); shown as a planning estimate pending re-verification. report_mode
  • monthly storage fee — Fee basis review is overdue (stale after 2026-10-23); shown as a planning estimate pending re-verification. report_mode
  • fba fuel logistics surcharge 2026 — Included in the FBA fulfillment fee: Amazon applies a 3.5% fuel and logistics-related surcharge to US FBA fulfillment fees from April 17, 2026.

Explicitly excluded

  • inbound placement service fee — Excludes Amazon inbound placement service fees (vary by split shipments and placement choices).
  • low inventory level fee — Excludes Amazon low-inventory-level fees (depend on your days-of-supply, not modeled here).

Review the Amazon seller-fee source-state register →

Read the formula, inclusions, exclusions, and fee-category audit →

Calculator
Inputs
Enter your operating figures for a planning estimate based on published rate cards and industry midpoints.
We may earn a commission if you click a vendor link. External vendors are independent third parties.
Result
Fill in your operating figures above to get a planning estimate.

Worked example

Example inputs: $39.99 price, $12 unit cost, 1.5 lb large-standard, general category, 3 months on hand

Net profit $15.79 per unit at 39.5% margin — $39.99 price, $12.00 cost, $12.20 in Amazon fees.

  • Dominant cost driver: Largest Amazon fee: Referral fee ($6.00 of $12.20 total Amazon fees)
  • Decision threshold: Fees consume 31% of the selling price.
  • Sensitivity: Margin status, largest fee component, approximate price floor, max COGS, implied max ACoS before the unit turns negative, and the explicit distinction that FBA months-on-hand is per-product storage residence while aggregate turn rate belongs in the Inventory Carrying Cost calculator.
OptionResult
Unit cost (COGS)$12.00
Referral fee$6.00
FBA fulfillment fee$5.93
Storage (total)$0.27
Closing fee$0.00

Example inputs — your own numbers will differ. A planning estimate, not a quote.

How this is calculated

Estimates per-unit FBA profit after unit cost, referral fee, closing fee where applicable, Amazon's 2026 FBA fulfillment fee for the size tier, shipping weight and price band (non-peak or holiday peak by date, including the 3.5% fuel and logistics surcharge), and blended storage multiplied by per-product months on hand.

Formula: net_profit = selling_price - product_cost - referral_fee - closing_fee - fulfillment_fee - (storage_fee_monthly × months_on_hand)

Fee basis: Amazon US FBA fee basis · unavailable · reviewed 2026-06-07. Amazon's 2026 US FBA fulfillment rate card (non-peak Jan 15 – Oct 14, holiday peak Oct 15 – Jan 14) with the 3.5% fuel and logistics surcharge; program-specific fees are excluded unless explicitly modeled.

FBA Profit Calculator

Use this FBA Profit Calculator tool to estimate costs and plan next steps. This hub explains how to use the tool, what affects estimates, and where to go next. Below are the most common drivers people see for this kind of job.

What typically drives the estimate

  • Referral fee rate (category-dependent: 8%–17%+)
  • FBA fulfillment fee (size tier, shipping weight, price band, peak season)
  • Monthly FBA storage fee and long-term storage
  • Inbound shipping cost to FBA warehouses
  • COGS, return rate, and landed cost

Related pages

Disclosure: Affiliate disclosure: We may earn a commission when you engage a vendor through links on this site. This does not affect the price you pay or the cost estimates shown, which are calculated independently of vendor relationships. Calculator results are planning estimates only — not financial guarantees.

Canonical: https://marginruler.com/tool/fba-profit-calculator/

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Regional pages

Regional FBA Profit Calculator pages

Use the regional FBA-profit pages when fulfillment assumptions, inbound costs, storage pressure, or marketplace fee context may affect SKU-level contribution margin. The local pages keep the profit stack tied to a planning region without changing the formula. Browse below; the calculator math is the same on each regional planning page.

Australia

Canada

New Zealand

United States