Who pays the anti-dumping security on imported windows, and who is the importer of record?

When the anti-dumping securities on aluminium windows and doors from China were announced on 14 October 2026, the first question from builders was who pays. The short answer is that the party who clears the goods pays first, and it is not usually the factory. The longer answer is that the Customs Act uses a deliberately wide definition of owner, so liability is not always confined to the name on the declaration.

The declaration is the first answer

The Australian Border Force (ABF) requires the owner of imported goods to make an import declaration, and the documentary import declaration guide describes an owner as the importer, someone holding themselves out as the owner, someone with a beneficial interest in the goods or someone with control of the goods. To lodge a declaration for goods subject to a dumping security, the importer or their broker must obtain a Security ID from the National Temporary Imports and Securities section of the ABF and submit a dumping security undertaking, which the Dumping Commodity Register describes as an undertaking or promise to pay should the Minister impose measures at the end of the investigation. The register for this commodity is maintained by the Australian Trade Remedies Commission (ATRC), which took over the role when the Anti-Dumping Commission was renamed on 29 September 2026.

In practice there are three common arrangements. The first is the Australian supplier as importer of record: the supplier clears the container, lodges the undertaking, and the cost reaches the builder only through whatever the supply contract permits. The second is the builder or owner-builder as importer of record, where the package is bought directly and landed in their own name. The third is a customs broker acting as agent for one of those parties, which does not move the liability but does change who administers it.

Why “the supplier pays” can still end up with the builder

The Customs Act defines owner in section 4 to include any person who is or holds themselves out to be the owner, importer, exporter, consignee, agent, or person possessed of, beneficially interested in, or having control of or power of disposition over the goods. The ABF's own notice on the definition is blunt about the consequence: the responsibility rests with the owner, which makes liability effectively joint and several, and most parties in the supply chain, including licensed customs brokers, can fall within the definition.

That is why the practical rule is demand-first, contract-second. The ABF will generally issue a demand for unpaid duty to the importer named on the declaration, and once that demand is paid no other party is liable. Where it is not paid, the ABF can look at other parties who meet the definition, weighing their involvement and conduct. The commercial contract decides who ultimately bears the cost, but it does not decide who the Commonwealth can ask.

The security is capped, and the cap matters

A security is not an open-ended charge. Section 12 of the Customs Tariff (Anti-Dumping) Act 1975 provides that where interim duty would exceed the amount of the security taken, the interim duty payable equals the amount of the security. So the exposure at the border is capped by the security that was lodged, which is calculated on the dumping export price at the rate that applies to the exporter.

The rules also turn on two different dates, and importers conflate them. A security is taken for goods entered for home consumption on or after the date the securities commenced, which for this measure is 15 October 2026. Conversion to interim duty is narrower: securities are converted only for goods the subject of the duty notice that were exported to Australia on or after the date of the preliminary affirmative determination. A consignment that entered after 15 October but was exported before the determination therefore has its security cancelled rather than converted. For an importer with containers already on the water, the shipped on board date on the bill of lading is as important as the rate.

What to put in the supply contract

Three clauses do most of the work. The first names who is the importer of record and who obtains the Security ID. The second allocates responsibility for duties, taxes, securities and any trade remedy measure, and says whether a change in rate after signing is a variation or is absorbed. The third deals with the certificate of origin and the exporter's legal name, because a mismatch between the export documents and the invoice is a compliance risk before it becomes a cost.

The Australian Glass and Window Association advised members before the determination to make sure their commercial agreements clearly allocate responsibility for any duties, taxes, charges or trade remedy measures that may be imposed. That advice reads as routine risk management; in practice it decides which party is left holding the exposure when a fixed-price contract meets a border charge that did not exist when the contract was signed.

If the demand lands on you

Ask for the demand in writing: section 165 of the Customs Act 1901 requires a demand to specify the amount and include an explanation of how it has been calculated. Check the rate against the exporter's entry in the Dumping Commodity Register rather than against the headline range. Confirm the entry date and, where relevant, the date of export, because the measure applies by entry and the conversion rules turn on export. And raise any contractual claim with the counterparty separately: the Commonwealth's demand and the commercial dispute are two different processes, and paying one does not settle the other.

The securities are a preliminary measure, not a final duty. This article is general information about how the liability is allocated, not customs, legal or financial advice.