An Australian customs duty and GST calculator for importers and cross-border e-commerce sellers. It applies the AU$1,000 low-value threshold below which duty and GST are not collected at the border, the standard 5% general duty rate, and 10% GST on the value of the taxable importation — the duty-inclusive landed value including freight and insurance.
How it works
Australia uses a two-tier model. Goods valued at or below AU$1,000 clear without border charges (GST on consumer sales is instead collected by the seller at checkout under the low-value imported goods rules). Above the threshold, both duty and GST apply:
duty = goods > 1000 ? customsValue * dutyRate : 0
VOTI = customsValue + duty + freight + insurance (value of taxable importation)
GST = goods > 1000 ? VOTI * 0.10 : 0
landed = customsValue + freight + insurance + duty + GST
GST is 10% of the VOTI, which deliberately bundles the customs value, the customs duty and the
international transport and insurance — so GST is charged on top of the duty, not alongside it. The
default duty rate of 5% is the general rate; many tariff lines are duty-free or covered by a free
trade agreement.
Example and notes
A AU$1,500 consignment with AU$120 freight, AU$30 insurance and a 5% duty rate: duty is
AU$75; the VOTI is 1500 + 75 + 120 + 30 = AU$1,725; GST at 10% is AU$172.50; the landed total
is about AU$1,897.50 before brokerage and the import processing charge.
A AU$800 parcel falls under the threshold — no border duty or GST — though the overseas seller
should have already collected 10% GST at checkout. Confirm the duty rate from the Australian
Customs Tariff or the Department of Home Affairs for your commodity. All figures are computed in your
browser.