Customs clearance trips up most first-time importers — and plenty of experienced ones too. This guide covers everything you need to know: how the process works, what documents you need, what it costs, and how to avoid the mistakes that slow down your shipments.

Customs clearance is the formal process of declaring your imported goods to the Australian Border Force (ABF), having them assessed for duties, taxes, and biosecurity compliance, and receiving authorisation for those goods to legally enter Australia.
Every shipment that crosses the Australian border — regardless of size, value, or whether it arrived by sea or air — must go through some form of customs process. The complexity depends on what you're importing, where it's coming from, and whether your goods require additional permits or biosecurity treatment.
Two government agencies are involved:
Both clearances are required before your goods can leave customs control and head to your warehouse.
Before your goods even arrive in Australia, you (or your licensed customs broker) need to gather all required documentation. This stage is where most problems begin — not because the paperwork is hard, but because importers underestimate how precisely it needs to match.
Your commercial invoice, packing list, bill of lading, and any permits must be accurate and consistent with each other. A mismatch between invoice values and packing list quantities, or a vague description of goods on the invoice, flags your shipment for manual review — and that costs you time and money.
Get this stage right and everything else runs smoothly. Rush it and you'll pay for it at the border.
For goods valued above AUD $1,000, an Import Declaration (Form N10) must be lodged electronically with the ABF through the Integrated Cargo System (ICS).
For goods valued at AUD $1,000 and under, a Self-Assessed Clearance (SAC) Declaration is used instead — a simpler process.
The declaration identifies your goods, their customs value, country of origin, and the applicable tariff classification. That last part — tariff classification — is where the technical knowledge of a customs broker really earns its keep.
The ABF assesses your declaration, classifies your goods under the Australian Customs Tariff, and calculates any applicable duties and taxes.
Free Trade Agreements can significantly reduce or eliminate your duty obligations. Australia has FTAs with China (ChAFTA), the US, Japan, South Korea, the ASEAN bloc (RCEP), and the UK (A-UKFTA).
Running parallel to the ABF customs process, DAFF assesses your goods for biosecurity risk. If you're importing anything that involves wood packaging from China, your supplier needs to provide a ISPM 15-compliant fumigation certificate.
Once assessed, any duties, GST, and import processing charges must be paid before your goods are released. GST-registered businesses can typically claim the GST paid on imports as an input tax credit through their BAS.
Once all assessments are complete and charges paid, the ABF issues a release authority. Pre-clearance is standard practice for experienced importers and one of the most practical ways to control your landed costs.
Commercial Invoice — must include buyer, seller, description of goods, quantity, unit price, total value, and currency.
Packing List — itemises the contents, packaging dimensions, and weights for each package or container.
Bill of Lading (sea freight) or Airway Bill (air freight) — the contract of carriage between you and the shipping line.
Packing Declaration — required for all sea freight imports.
Certificate of Origin — if you're claiming preferential duty rates under a Free Trade Agreement.
Fumigation Certificate — if your goods or wooden packaging have been fumigated.
Import Permits or Licences — required for restricted goods including certain foods, chemicals, pharmaceuticals, plants, animals, and hazardous materials.
This is the single most common cause of preventable delays. Fix it before your goods ship, not after they've arrived.
An experienced customs broker gets this right; a guess doesn't.
Check permit requirements before you place your order.
Brief your Chinese or Vietnamese supplier thoroughly on Australian biosecurity requirements before production begins.
The ABF has sophisticated methods for identifying undervalued declarations. The penalties can be severe.
Legally, no. In practice, the vast majority of businesses use a licensed customs broker — and with good reason. A licensed customs broker costs a few hundred dollars per shipment. An error in tariff classification or a missed permit can result in penalties that dwarf that fee.
Australia's FTA with China (ChAFTA) means that most goods manufactured in China can now enter Australia duty-free, provided they meet the rules of origin requirements. One of the first things we do when we onboard a new client at Epic Sourcing is review whether they're correctly claiming FTA concessions.
At Epic Sourcing, we make sure our clients' shipments are customs-ready before they leave the factory floor. It's part of what our OutSource service covers end-to-end.
And if you want a sourcing partner who handles the factory side so you can focus on growing your business, give us a bell.
