
When shipping parcels within Australia or internationally, understanding Australia Post parcel limitations is crucial to avoid unexpected delays, surcharges, or even package rejections. Whether you’re a business or an individual sender, complying with weight, size, and restricted items guidelines ensures smooth delivery.
For businesses that require efficient order fulfillment and third-party logistics (3PL) solutions, OZ Prep Services offers tailored shipping and storage services across Australia.

Weight and Size Restrictions
Australia Post enforces strict parcel size and weight limitations based on different shipping categories:
Domestic Parcels
- Maximum weight: 22 kg per parcel
- Maximum size: 105 cm for the longest side, with a combined girth and length of up to 140 cm
International Parcels
- Maximum weight: 20 kg (varies by destination)
- Maximum size: 105 cm for the longest side, with a combined girth and length of up to 140 cm
Prohibited and Restricted Items
Australia Post has a list of prohibited and restricted items that cannot be shipped domestically or internationally. Common restricted items include:
- Hazardous materials: Explosives, flammable liquids, and compressed gases
- Biological materials: Live animals, certain plant species, and perishable food items
- Valuables: Cash, precious metals, and jewelry (unless using specific services)
- Batteries: Lithium batteries have strict shipping guidelines
To avoid issues, check the official Australia Post website for up-to-date prohibited item lists.
Parcel Packaging Guidelines
To prevent damage and ensure smooth shipping, follow these packaging best practices:
- Use sturdy boxes that can handle weight limits.
- Secure fragile items with cushioning materials like bubble wrap.
- Seal the package with strong packing tape.
- Attach clear, legible labels with sender and receiver information.
Handling Oversized or Bulk Shipments
For businesses handling bulk shipments, outsourcing to a 3PL provider like OZ Prep Services can streamline operations. They offer:
- FBA prep services for Amazon sellers
- Warehousing and storage solutions
- Customized logistics support
Using a third-party logistics (3PL) service helps businesses comply with Australia Post’s limitations while optimizing shipping efficiency.
Conclusion
Understanding Australia Post parcel limitations ensures hassle-free shipping and compliance with postal regulations. Whether you’re sending personal packages or running an e-commerce business, following size, weight, and packaging guidelines is essential.
For businesses requiring reliable order fulfillment and bulk shipping solutions, partnering with OZ Prep Services ensures compliance, efficiency, and cost-effective logistics management.