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ShipMargin

Amazon FBA calculator with import duty

Chain landed cost into FBA profit: duty, freight and import tax through referral and fulfilment fees to net margin, now that the US de minimis exemption is gone.

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Built for the post-de-minimis world. Of nineteen ecommerce profit calculators we audited, none model import duty at all.

Product and price
$
Unit size and weight

Measure the packaged unit as Amazon receives it. Size decides the tier, and the tier decides the fee.

cm
cm
cm
kg
Import

Duty is now owed on every US import, whatever the value.

$
%

Check USITC Harmonized Tariff Schedule

$

Landed cost per unit: $6.44 — that is 12% on top of the supplier price, and it is the figure carried into the margin below.

Your costs
$
Net profit per unit38.2% margin
$11.46

$3,397.32 a month at 300 units

ROI
177.9%
Break-even price
$16.51
Max ad spend per sale
$14.46
Break-even ACOS
48.2%
FBA fee
$4.10
Small standard
Amazon fees total
$8.60
28.7% of price
Where your selling price goes
  • Amazon referral (15%)−$4.5015%
  • FBA fulfilment−$4.1013.7%
  • Landed cost of goods−$6.4421.5%
  • Advertising−$3.0010%
  • Returns−$0.431.4%
  • Net profitkept$11.4638.2%
Profit across price

Fees move with the price, so the line is not straight.

-$7.09$13.82$34.73break-even$11.56$53.98Selling price

Questions people ask about this

Why does import duty belong in an FBA calculation?

Because since 29 August 2025 there is no US de minimis exemption, so every unit you import owes duty from the first cent. For a China-sourced private-label seller, duty is now frequently a bigger line item than Amazon's referral fee — and it lands before you sell anything, so it hits cash flow first and margin second.

What duty rate should I use?

The one on your commodity code, from the destination tariff — not a category average. Footwear and apparel run into double digits, most consumer electronics are zero-rated, and tariff actions on particular origins can stack on top of the base rate. We link the official lookup, and the calculator takes whatever rate you enter.

Related calculators

Amazon FBAFBA fees on the 2026 structure, with break-even and max ad spend.Landed costGoods, freight, duty, tax and fees, resolved to a cost per unit.Customs dutyDuty, VAT and levies, stacked in the order customs actually applies them.Break-even ACOSThe ACOS, ROAS and CPC ceilings your unit economics allow.

Where these numbers come from

Rates and rules change, and a calculator running on stale data is worse than no calculator. Every figure below carries the date we last checked it and a confidence level, so you can judge how much weight to put on it.

Source Publisher Effective Confidence
Suspending duty-free de minimis treatment for all countries Signed 2025-07-30, effective 2025-08-29, applying to all countries rather than only China and Hong Kong. The $800 exemption that most duty calculators still assume no longer exists. The White House (Executive Order 14324) 2025-08-29 Primary source
Amazon FBA fulfilment rate card 2026 Amazon's own rate card is login-gated, so every third-party figure — including ours — is a secondary reproduction. Directionally consistent across four independent sources. Verify against your own Seller Central rate card before pricing a product on it. AMZ Prep 2026-01-15 Secondary source
Amazon 3.5% fuel and logistics surcharge on FBA fees A 3.5% surcharge applied to the fulfilment fee itself, not the sale price, on FBA and Multi-Channel Fulfilment in the US and Canada from 2026-04-17 (2026-05-02 for MCF and Buy with Prime). Roughly $0.15 to $0.35 per unit on a standard item. Fast FBA 3PL 2026-04-17 Corroborated

Page last reviewed . Spotted something out of date? Tell us — corrections are published with the date they were made.