Anti-dumping duties on aluminium windows and doors: what it means for your project

If you have an aluminium window and door package on order from China, you may already have felt this one. A preliminary determination in the Australian anti-dumping case covering aluminium windows and doors has introduced provisional securities on imported goods, and the practical effect has been immediate: shipments held at the border, landed costs nobody can confirm, and in some cases orders handed back because the supplier could not carry the exposure.

This article explains what the measure does, who it affects, and what to check before you place or continue an order. It is written for builders, developers and project managers with a schedule to protect, as well as for homeowners who have been told their windows are delayed.

What a provisional security actually is

An anti-dumping investigation asks whether goods are being exported to Australia below their normal value, and whether that is causing injury to Australian industry. When the investigating authority reaches a preliminary view that it is, it can require importers to lodge securities on affected goods from that point forward. The security is not a tax on the buyer in the ordinary sense; it is a deposit held while the investigation finishes.

Two points matter for anyone planning around this. The first is that securities are applied per exporter, not as one rate across the board, so two suppliers shipping comparable product can face very different numbers. The second is that a preliminary determination is not a final one. Rates can move in either direction, and the measure can be varied or revoked when the final determination is made.

Why orders are stalling rather than simply costing more

In theory a security is a cash flow problem. In practice it has been stopping orders outright, for three reasons.

Cash. Securities are lodged at the border on the full value of the consignment, before the goods are released. A small importer who priced a job on thin margins may not have the working capital to clear their own container.

Pricing certainty. A quote issued before the determination may no longer be serviceable. A supplier who cannot say what the landed cost will be often withdraws rather than commits, and the builder is left holding a schedule with no window package behind it.

Exposure. Where the rate applying to an exporter is high, the arithmetic can stop working altogether. That is the position a number of smaller suppliers have found themselves in, and it is why some orders have been returned rather than repriced.

What the notice sets

Under Trade Remedies Notice TRN 2026/147, published by the Australian Trade Remedies Commission (formerly the Anti-Dumping Commission) on 14 October 2026 in investigation 691, securities apply from 15 October by exporter: between 5.3 and 51.6 per cent for the exporters examined individually, 24.4 per cent for residual exporters, and 73.3 per cent for uncooperative and all other exporters. Submissions on that statement are due by 3 November, and the final recommendation is due to the Minister by 16 December.

What has not changed is how SMIRO quotes: in AUD, with the price locked when you sign, and with customs and securities handled on our side. The determination is preliminary, the final outcome has not been confirmed, and this page will be updated when it is.

If your supplier has gone quiet, what to ask

Whether you come to us or not, these questions are worth putting to any aluminium window and door supplier right now. They separate a supplier who has worked out their position from one hoping the problem passes.

Who actually manufactures the product, and are they the exporter of record? A trading company reselling another factory output may be exposed to a rate it neither controls nor has visibility of.

Can you give me a landed cost, in writing, that holds? A verbal reassurance instead of a number usually means the exposure has not been worked out.

Does the product carry AS 2047 certification, and can I see the certificate? Compliance was already non-negotiable for a certifier. A disrupted supply chain is exactly when substitutions get made quietly.

What happens to my order if the final determination moves the rate? A supplier who has thought about this has an answer ready. One who has not will change the subject.

For developers and builders mid-project

The hardest version of this is a project already under way: frames scheduled, a certifier expecting documentation, and a supplier who has stopped answering. Two things help.

Get the window schedule and the energy report into a second supplier hands early, before you have decided whether to switch. Requoting a full package takes time and the schedule is the long pole. Starting that process is not a commitment.

Separate the compliance question from the commercial one. If a replacement package has to satisfy the same AS 2047 and energy requirements, confirm that first. A cheaper package that fails documentation costs more than the one you were trying to replace.

How we can help

SMIRO manufactures its own aluminium window and door systems and supports Australian projects directly, with AS 2047 certified systems and same-day quoting from drawings. If an order has stalled, send through the floor plan and energy rating and we will come back with a project quote and a view on lead time.

The figures above reflect a preliminary determination only, and the final outcome has not been confirmed. Nothing on this page is legal, customs or financial advice. If you are an importer with goods affected by this measure, take your own advice on your position.