Import delays in Australia rarely come from one single problem. A shipment can be delayed by a supplier’s invoice error, a missing treatment certificate, a customs query, an unpaid GST amount, a shipping line schedule change, a port-side disruption or a warehouse that is not ready to receive the goods. The difficult part for importers is that some risks are controllable and others are not.
There is no reliable “standard delay time” that applies to every import. Timing varies by shipment, port, season, commodity, documentation, shipping line, cargo route, regulatory checks and receiver readiness. The practical goal is not to eliminate every delay. It is to remove avoidable causes before the goods depart and build a plan for the risks that sit outside the importer’s control.
Why import delays happen
Australia’s import process involves several linked steps: international transport, carrier documentation, customs reporting, duty and GST assessment, biosecurity risk assessment, terminal or depot handling, and final delivery. If one step is incomplete, the entire shipment can stall.
For most goods valued over AUD1,000, importers need an import declaration and may need to pay duties, GST and charges before release. ABF also notes that first-time or infrequent importers are encouraged to use a licensed customs broker (ABF, 2024). Biosecurity requirements apply separately, and DAFF regulates import conditions for goods entering Australia. Those conditions can vary based on the goods and the country of export or origin (DAFF, 2025a).
A delay often starts earlier than importers realise: at purchase order stage, when product descriptions, Incoterms, packaging, country of origin, invoice values and shipping responsibilities are not clearly agreed.
1. Incomplete or incorrect documents
Documentation is one of the most controllable causes of delay. Common problems include missing invoices, inconsistent consignee details, vague goods descriptions, incorrect weights, missing packing details, mismatched bill of lading data, incorrect country of origin information or missing permits.
DAFF’s documentary requirements include non-commodity information such as consignment type, packaging materials and container cleanliness statements where relevant (DAFF, 2024). This matters because biosecurity officers and customs brokers rely on document evidence to assess whether goods can be released, inspected, treated or held for more information.
Importers should avoid generic descriptions such as “parts”, “accessories”, “samples” or “goods”. A better invoice description explains what the goods are, what they are made from, how they will be used and how they are packed. This helps with tariff classification, biosecurity assessment and delivery planning.
2. Supplier invoice and packing list errors
Many Australian import delays begin overseas. Suppliers may prepare invoices for payment rather than customs clearance, which can leave out important operational details. A commercial invoice should align with the packing list, purchase order, bill of lading or air waybill, and any certificate of origin, treatment certificate or manufacturer declaration.
Typical supplier-side errors include incorrect carton counts, missing pallet details, wrong weights, inconsistent product codes, missing Incoterms, incorrect currency, undervalued goods, or an invoice that does not match the actual cargo. These issues can trigger customs queries, biosecurity questions, payment disputes or delivery planning problems.
The best time to fix supplier paperwork is before the shipment departs. Once goods are on the water or in the air, document corrections may require amended carrier documents, new declarations or further evidence from the supplier.
3. Customs declaration issues
Customs delays can occur when the information needed for the import declaration is incomplete, inconsistent or wrong. Key risk areas include tariff classification, customs value, origin, permits, concessions, restricted goods and whether the correct declaration type has been used.
ABF explains that goods imported into Australia are generally liable for duties and taxes unless an exemption or concession applies, and goods over AUD1,000 are generally subject to relevant duties, taxes and charges (ABF, 2024). If restricted or prohibited goods are involved, the importer may need permission from the relevant government agency and evidence for ABF before the goods can be released (ABF, 2024).
Importers can reduce risk by confirming the product description, tariff classification, country of origin, customs value and permit requirements before booking freight. A licensed customs broker can help lodge the declaration, identify missing data and reduce the chance of avoidable customs queries.
4. Biosecurity inspections or treatment requirements
Biosecurity is one of the most important import delay risks in Australia. DAFF states that some goods are subject to biosecurity import conditions by law. Some are not permitted, while others are allowed only if specific conditions are met, such as documentation, treatment, inspection or an import permit (DAFF, 2025b).
BICON should be checked before the goods are shipped. It helps importers determine whether a commodity is permitted, whether documentation or treatment is required, and whether a biosecurity import permit is needed (DAFF, 2025b). DAFF indicates that most standard permit applications are issued within 20 business days, and non-standard applications within 40 business days, after payment and a complete application. However, applications may take longer if information is incomplete, incorrect, technically complex or relates to a novel product (DAFF, 2025b). That is a permit-processing guide, not a shipment clearance guarantee.
If imported goods do not meet requirements and cannot be treated, DAFF may direct them for export or disposal at the importer’s expense (DAFF, 2025c). This is why pre-shipment checking is essential for food, timber, plant products, animal products, machinery, used equipment, packaging, containers and seasonal risk goods.
Seasonal measures can also matter. For example, Australia’s Brown marmorated stink bug measures apply to targeted goods manufactured in or shipped from target risk countries during the relevant seasonal window, with treatment or inspection requirements depending on the goods and circumstances (DAFF, 2026). Importers should not assume last year’s requirements are unchanged.
5. Port congestion, vessel schedule changes and shipping line issues
Not every delay is caused by paperwork. Vessel schedule changes, port congestion, weather, blank sailings, container equipment shortages and transhipment disruption can all affect arrival and delivery dates.
Infrastructure Australia notes that container trade growth is driven by imports and that Australia’s major container ports lag some trading partners on vessel schedule reliability and ship turnaround time (Infrastructure Australia, 2026). The ACCC also monitors container stevedoring prices, costs and profits at major Australian container ports, reflecting the importance of terminal performance in the broader supply chain (Australian Competition and Consumer Commission [ACCC], 2025).
Importers cannot control berth windows or global vessel rotations, but they can reduce exposure. Practical steps include booking earlier during peak seasons, avoiding unrealistic delivery promises, choosing routings carefully, allowing buffer stock for critical products, and keeping customers updated when ETAs change.
6. Unpaid duties, GST or fees
Goods may be ready from a customs or biosecurity perspective but still not released because duties, GST, import processing charges, terminal charges, freight balances or other fees are unpaid.
ABF is responsible for calculating and collecting GST on taxable importations, and GST is generally payable unless an exemption applies (ABF, 2025a). ATO guidance also notes that GST is payable on most goods imported into Australia and is normally payable before goods are released by Home Affairs, unless deferral arrangements apply (Australian Taxation Office [ATO], 2024).
Importers should estimate landed costs before shipment, confirm who will pay which charges, and ensure payment authorities are in place before cargo arrives. This is especially important for high-value shipments, urgent stock, and importers using new suppliers or new Incoterms.
7. Incorrect delivery details or warehouse booking issues
Final delivery can be delayed even after customs and biosecurity are complete. Common problems include wrong delivery addresses, no booking reference, receiver closed, no forklift, incorrect container unpack arrangements, missing contact details, site access restrictions or warehouse congestion.
DAFF documentation guidance also notes that delivery postcode or rural destination information may trigger rural tailgate inspection requirements (DAFF, 2024). That means final delivery details are not just a transport issue; they can affect biosecurity planning too.
For containerised freight, importers should confirm delivery address, unpack method, site access, time slots, container detention risk and empty return arrangements. For air freight and LCL cargo, they should confirm depot availability, carton counts, delivery windows and whether the receiver can accept part shipments.
How to reduce delay risk before shipment departs
The strongest delay prevention work happens before cargo leaves origin. Importers should check product eligibility, BICON requirements, permits, treatment needs, commercial invoice data, packing list accuracy, Incoterms, insurance, shipping mode, delivery address and receiver availability before shipment.
A useful internal rule is: no booking until the paperwork has been reviewed. That does not mean every risk disappears, but it prevents the common situation where the vessel is already sailing and the importer discovers a missing permit, incorrect description or supplier error.
For seasonal goods, regulated cargo, food, timber, used machinery, products with animal or plant content, or shipments from BMSB target-risk countries, pre-shipment checking is even more important. Waiting until arrival can turn a manageable compliance task into storage, detention, treatment, export or disposal costs.
How freight forwarders help coordinate the process
A freight forwarder cannot override ABF, DAFF, shipping lines, terminals or weather. What a good forwarder can do is coordinate the moving parts early and keep the importer informed when risk changes.
For TwayS, that means helping importers think through routing, documents, supplier instructions, customs broker coordination, biosecurity directions, terminal availability, cartage, delivery bookings and exception management. The forwarder’s practical value is in sequencing: checking the right information before departure, escalating missing details before arrival, and coordinating release and delivery once cargo becomes available.
The best results come when the importer, supplier, broker, forwarder and receiver all work from the same shipment plan. Import delays cannot always be avoided, but many are predictable. The earlier they are identified, the more options an importer has.
