Australia Post Parcel Rates 2025: Costs, Sizes & Calculator

Australia’s postage system catches many senders off guard: flat fees apply to parcels up to 5kg, but anything heavier shifts to zone-based charging that varies by distance. This guide breaks down the official 2025 Australia Post pricing for domestic and international parcels, with tools to calculate any route yourself.

Parcels up to 5kg: Fixed price to anywhere in Australia · Parcel Post service: Regular domestic delivery · Express add-on: $17 at each standard price point · Courier add-on: $85 at each standard price point · Postage calculator: Calculate your rate on auspost.com.au

How much does it cost to post a parcel in Australia?

Australia Post breaks domestic pricing into two distinct zones: parcels up to 5kg travel at a fixed nationwide rate regardless of where they’re going, while anything heavier shifts to zone-based charging with distance components. According to Australia Post’s Parcel Post Guide MS102, postage for articles up to 5kg is a fixed price to anywhere in Australia.

Domestic parcels up to 5kg

For senders using their own packaging, the flat-rate scale runs as follows: up to 250g costs $9.70, 250–500g costs $11.15, 500g–1kg costs $15.25, 1–3kg costs $19.30, and 3–5kg costs $23.30 (Australia Post Parcel Post Business Page). Prepaid satchels carry a small markup—Extra small $10.05, Small $11.50, Medium $15.65, Large $19.75, Extra large $23.80—but the pricing logic remains identical: size-based, not weight-based.

• Up to 250g: $9.70
• 250–500g: $11.15
• 500g–1kg: $15.25
• 1–3kg: $19.30
• 3–5kg: $23.30

Parcels over 5kg

Once a parcel exceeds 5kg, the pricing model changes. Australia Post charges on either the actual weight or the cubic weight (volume in cubic metres multiplied by 250), whichever is greater. The base charge is $23.30 to cover the first 5kg, then distance-based fees kick in per additional kilogram (Australia Post Parcel Post Guide MS102). For example, a 5–6kg parcel destined for Queensland Zone 3 costs $25.25, while the same weight sent to Tasmania Zone 1 runs $25.70—a difference that reflects geographic distance rather than parcel size.

Using own packaging

The same flat-rate brackets apply whether you use Australia Post boxes or your own boxes, provided your parcel stays within the 105cm length limit, 0.25 cubic metre volume cap, and 22kg weight ceiling (Australia Post Parcel Post Business Page). The critical difference with own packaging is compliance: your box must meet structural standards and must not exceed the dimensional limits or Australia Post may re-weigh and re-price the parcel at the counter.

Does Australia Post go by weight or size?

For parcels up to 5kg, the answer is straightforward: size, not weight. Flat-rate pricing locks in the cost regardless of how much the parcel actually weighs within that size tier. Above 5kg, both metrics matter—Australia Post will assess charges according to their actual weight or cubic weight equivalent, whichever is greater (Australia Post Parcel Post Guide MS102).

Weight-based pricing

The cubic weight formula rewards dense, compact parcels and penalises large, lightweight ones. If you have a 1kg parcel in a 30cm × 30cm × 20cm box, the cubic weight calculation is (0.30 × 0.30 × 0.20) × 250 = 4.5kg. Australia Post would charge based on 4.5kg, not the actual 1kg. This is why many senders discover their “light” parcel costs more than expected—the box dimensions drive the price.

Size limits for parcels

Domestic parcels cannot exceed 105cm in any single dimension, and the sum of length plus twice the width plus twice the height (girth) cannot surpass 140cm. The total volume is capped at 0.25 cubic metres (Australia Post Parcel Post Business Page). Packages that exceed these limits are either returned to sender or upgraded to a higher charge tier, depending on the specific dimensions.

Parcel dimensions guide

Australia Post’s official flat-rate packaging comes in five named sizes: XS (up to 250g), S (up to 500g), M (500g–1kg), L (1–3kg), and XL (3–5kg). Extra small satchels were introduced from 1 July 2025 at $9.70 postage only, with the prepaid satchel version added 1 August 2025 at $10.05 (Australia Post Parcel Post Business Page). These pre-sized options eliminate the guesswork around dimensional weight since the boxes themselves are pre-certified.

What are Australia Post parcel sizes and prices?

Australia Post publishes detailed rate cards in PDF format, with the current domestic Parcel Post Guide MS102 effective as at 1 July 2025 and the MS11 Post Charges Booklet reflecting rates from 17 July 2025 (Australia Post MS11 Post Charges Booklet). These documents contain the full zone maps and specific distance charge tables.

Standard parcel sizes

The official flat-rate boxes and satchels are designed around practical weight brackets rather than exact dimensions. The XS satchel accommodates items up to 250g, S up to 500g, M handles 500g to 1kg, L covers 1–3kg, and XL takes 3–5kg. This structure means a sender doesn’t need to measure dimensions precisely—weight determines the appropriate tier.

Flat rate packaging

Australia Post offers two service levels for flat-rate packaging: Regular Parcel Post and Express Post. The Express version adds a premium across all sizes: Extra small $12.70, Small $14.65, Medium $19.25, Large $23.80, XL $31.80 (Australia Post Flat Rate Packaging Page). The price difference is consistent at $3 for XS through to $8.50 for XL, reflecting the speed premium rather than dimensional differences.

This table shows the direct comparison between standard and express pricing for each size tier.

The implication: the premium for Express Post grows disproportionately at higher weight tiers, so heavier parcels may benefit more from comparing Express against zone-based pricing for the speed gain.

20kg parcel costs

A 20kg domestic parcel sits at the maximum weight limit (domestic max is 22kg) and would be priced using the zone-based system. The base charge of $23.30 covers the first 5kg, then zone-specific per-kilogram rates apply for the remaining 15kg. For a metro-to-metro route like Sydney to Brisbane, expect around $35–$40; for regional routes to more remote zones, costs climb toward $50–$60 based on sample zone pricing in the official guide. The exact figure depends on your specific zone, which the Australia Post Postage Calculator will compute automatically.

Does Australia Post deliver to Ireland?

Yes—Australia Post offers international parcel services to Ireland through its International Standard Parcel and Express Parcel options, with rates varying by destination zone and weight. International parcels can weigh up to 20kg with a maximum length of 105cm and girth of 140cm (Australia Post MS11 Post Charges Booklet).

Delivery times to Ireland

International Standard Parcel to Western Europe typically takes 10–15 business days, while Express Parcel reduces this to 3–7 business days depending on customs processing. Economy Air Parcel is available for lighter packages up to 2kg and is approximately $2.00 cheaper than Standard Parcel at each weight point (Australia Post International Post Charges Guide).

Costs for international parcels

International pricing follows a zone structure rather than a flat national rate. The base pricing starts at $19.65 for items up to 250g to Zone 1 destinations (NZ and Pacific), with costs climbing through subsequent zones. For Ireland specifically (likely Zone 4 or 5), rates are substantially higher than domestic pricing—a 3kg international parcel can easily cost $80–$120 depending on service level. MyPost Business account holders may access up to 35% discounts on certain international zones (Australia Post MyPost Business Rates Guide).

Customs and duty requirements

All international parcels require customs documentation regardless of value. The sender must complete a customs declaration form listing the contents, value, and purpose (gift, commercial, or personal). For inbound parcels to Australia, duty and GST may apply if the declared value exceeds the threshold. Parcels from Australia to Ireland are subject to Irish import regulations, which may include VAT and customs duties on the recipient’s end. Third-party platforms like Easyship international comparator can provide comparative international rates alongside Australia Post pricing.

Is DHL faster than Australia Post?

For international deliveries, DHL typically offers faster transit times than Australia Post’s international services, particularly for premium express routes. However, the comparison depends heavily on the specific destination, weight, and service tier being considered.

Delivery speed comparison

DHL Express services to major global cities often deliver within 2–5 business days, while Australia Post Express Parcel typically runs 3–7 business days to similar destinations. Standard Australia Post International Parcel stretches to 10–20 business days for many Western destinations. The speed gap narrows considerably for regional areas where DHL’s network density advantage is smaller, and Australia Post’s universal reach can actually match or exceed competitor delivery times to remote addresses.

International rates comparison

Australia Post international pricing follows a zone-based structure with Express adding $17 to each Standard Parcel price point and Courier adding $85 (Australia Post International Post Charges Guide). DHL generally charges higher base rates but includes more comprehensive tracking and customs clearance services in the base price. Third-party aggregators like Easyship allow side-by-side comparison of Australia Post against DHL, UPS, and FedEx rates for specific routes.

When to choose each

Choose Australia Post for cost-sensitive domestic and lighter international parcels where tracking visibility is sufficient and delivery speed is not critical. Choose DHL for time-sensitive commercial shipments to major cities where the speed premium and customs handling justify the higher cost. MyPost Business account holders accessing the 35% international discount on certain zones (Australia Post MyPost Business Rates Guide) may find Australia Post’s express international pricing competitive with third-party carriers even for time-sensitive shipments.

How to calculate Australia Post parcel rates

Australia Post provides a free online postage calculator that handles domestic and international routes, service types, and weight combinations automatically. The Australia Post Postage Calculator is the authoritative tool for any route not explicitly documented in rate sheets.

1. Visit auspost.com.au/parcels-mail/calculate-postage-delivery-times/
2. Select “Domestic” or “International” depending on your shipment
3. Enter the origin and destination postcodes
4. Choose the service type (Parcel Post, Express Post, etc.)
5. Input either the exact weight or dimensions—calculator computes both if dimensions are provided
6. Review the price options across service tiers

“Postage for articles up to 5kg is a fixed price to anywhere in Australia.”

— Australia Post, Parcel Post Guide MS102

“Australia Post will assess charges according to their actual weight or cubic weight equivalent, whichever is greater.”

— Australia Post, Parcel Post Guide MS102

Related reading: Commonwealth Bank Term Deposit Rates – 2026 Rates and Guide · Bank Australia Login – Official Guide to Secure Access

Australia Post’s 2025 domestic rates guide outlines fixed domestic pricing up to 5kg alongside zone-based charges for heavier parcels to 22kg in 2025.

Frequently asked questions

For small business owners regularly shipping parcels, the choice between standard Parcel Post and a MyPost Business account is worth examining closely. MyPost Business offers a flagfall of $31.80 for the first 5kg (standard rate, discounted to $26.24 at the highest spend band) plus distance charges (Australia Post MyPost Business Rates Guide). If your monthly shipping volume exceeds a few dozen parcels, the spend-band discounts alone could reduce your annual postage bill by hundreds of dollars—making the annual fee for a Return Paid Number at $135.00 a minor cost against the savings on bulk postage.