What Shipping Mistakes Should You Avoid Before Launching Your Online Store?

Shipping mistakes can be expensive from the first order. In a 2025 survey, 48.26% of Australian online shoppers reported at least one delivery issue in the previous 12 months. Of those, 9.08% received goods damaged in transit, showing how fulfilment errors affect customer experience and retailer costs.

These shipping mistakes cost money before an online store even builds a repeat customer base. Small errors compound as order volumes grow.

This guide covers nine mistakes that reduce profit, delay deliveries, and weaken customer trust, plus how to prevent each before launch.

   

        

   

     

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Quick Summary: 9 Shipping Mistakes E-Commerce Stores Make

• Choose packaging that matches your product dimensions to avoid dimensional weight charges that increase shipping costs on lightweight parcels.
• Check every delivery address and customs document before dispatch to reduce return-to-origin fees, customs delays, and unnecessary customer complaints.
• Compare courier rates for every shipment instead of relying on one carrier, as pricing can vary by route, parcel size, and delivery speed.
• Inspect every order before it leaves your warehouse, including labels, packed items, and declared contents, to prevent costly fulfilment errors and returns.
• Be transparent about international duties and taxes at checkout so customers know the total landed cost before completing their purchase.

Compare courier rates and book shipments through Couriers & Freight's e-commerce delivery service.

9 Shipping Mistakes to Avoid Before Launching Your E-Commerce Store

Mistakes Before Packing: Overlooking Box Size and Weight Rules

1. Oversizing Packages and Ignoring Dimensional Weight Charges

Many Australian couriers charge based on whichever is greater, a parcel's actual weight or its cubic weight. Australia Post, for example, uses a conversion factor of 250 kg per cubic metre for domestic parcels.

A 0.4 kg T-shirt shipped in a 30 cm × 30 cm × 30 cm box has a cubic weight of 6.75 kg, so the carrier may charge based on 6.75 kg rather than the parcel’s actual weight. 

Packing the same item in a 20 cm × 15 cm × 5 cm satchel reduces the cubic weight to 0.38 kg and avoids unnecessary freight charges. Even a few dollars of extra shipping per order can add up quickly across 100 or more monthly shipments.

Measure every parcel before printing a shipping label to avoid paying for space.

2. Reusing Damaged or Worn Boxes

Cardboard weakens each time it is reused. Creased corners, compressed fluting, and ageing tape reduce a box's ability to protect products during sorting and transport. Compare the Market found that 9.08% of Australian online shoppers received damaged goods.

Damaged parcels lead to refunds and replacement shipments. Return freight and extra customer service time add further cost. Using sturdy, undamaged packaging protects products and reduces returns.

3. Failing to Declare Lithium Batteries or Dangerous Goods (International Orders)

If you're shipping products overseas, lithium batteries and other dangerous goods must be declared under the International Air Transport Association (IATA) Dangerous Goods Regulations. Exporters must also meet the carrier, airline and Australian export requirements that apply to dangerous goods.

For example, a Melbourne retailer exporting power banks without declaring the lithium-ion batteries risks having the shipment refused or destroyed. Non-compliant shipments can also be returned at the exporter's cost.

Compliance issues delay customs clearance and increase handling costs. Cancelled orders and refunds can follow. 

Mistakes During Packing and Labelling: Address and Documentation Errors

4. Incomplete or Incorrect Address Details

Incomplete delivery information is one of the most common causes of failed deliveries. Missing an apartment number or using the wrong postcode can prevent a parcel from reaching the recipient on the first attempt.

An incomplete rural address causes the same failure. A complete address should include the correct street number, street name, suburb, state, and postcode.

When a parcel is returned to the sender, retailers absorb the original shipping cost and return freight. Customers also face longer wait times. Complaints and refund requests become more likely. 

5. Missing or Incorrect Customs Documentation (International Shipments)

Before shipping internationally, complete every commercial invoice and use the correct Harmonised System (HS) tariff codes to help goods clear customs efficiently. Incorrect or incomplete declarations can delay clearance or trigger compliance action.

For example, a Sydney-based Shopify store shipping skincare products to the United Kingdom with an incorrect HS code may have its parcel held until the paperwork is corrected.

Documentation errors delay deliveries and increase customer enquiries. Refund requests and chargebacks can follow. Checking customs paperwork before dispatch reduces avoidable delays and gives customers greater confidence in delivery timeframes.

6. Unreadable, Smudged, or Duplicate Shipping Labels

Automated sorting facilities rely on barcode scanners to route parcels through distribution centres across Australia. Labels that are smudged or folded over a box edge may fail to scan. The same happens when one label covers another. Barcode failures force manual handling and can misroute a parcel to the wrong depot.

Unreadable barcodes interrupt automated sorting and delay deliveries. Handling costs increase as a result. Applying one clean, clearly visible label to every parcel helps keep shipments progressing through the sorting network and reduces avoidable delays.

Mistakes After Packing: Carrier Choice and Quality Control Gaps

7. Relying on a Single Carrier Without Comparing Rates

Courier pricing varies according to parcel weight, dimensions, destination, and delivery speed.

A 2 kg parcel sent from Sydney to Melbourne may cost less with one carrier than another, while regional deliveries can produce different results. Australia Post, StarTrack, and other carriers each use different pricing structures and service levels.

As your order volume grows, paying just $3 more per parcel across 100 monthly shipments adds $300 to your freight costs.Comparing rates before booking helps businesses choose the most cost-effective carrier for each route, parcel size and delivery timeframe.

Store owners who run their own website carry this cost alone, unlike sellers on a marketplace like Amazon.

8. Skipping Physical Quality Checks Before Dispatch

Before handing a parcel to your courier, complete one final quality check. Confirm the packed product, quantity, and declared contents match the customer's order, and that the packing slip, shipping label, and parcel weight are correct.

Missing this step increases the risk of shipping the wrong item or omitting part of a multi-item order. Sending the wrong size causes the same problem.

For example, dispatching a medium shirt instead of a large means processing a return and arranging a replacement. Resolving the issue with the customer adds further time.

A simple dispatch checklist catches these errors before parcels leave the warehouse. It reduces rework and helps customers receive the correct order the first time.

9. Not Disclosing Duties and Taxes at Checkout (International Orders)

Customers are more likely to complete international purchases when they understand the total landed cost before placing an order.

For example, a customer in the United Kingdom purchasing goods above the UK's £135 low-value consignment threshold may refuse delivery if import value-added tax (VAT) and customs duty are collected on arrival without prior notice. Goods below that threshold have VAT charged at checkout, while goods above it are taxed at the border.

Unexpected import charges lead to refused shipments and delivery delays. Customer experience suffers as a result. Displaying estimated duties and taxes at checkout sets clear expectations and reduces abandoned deliveries. Chargebacks and return freight costs drop as a result.

Correct Your Shipping Mistakes with Couriers & Freight

Many of these shipping mistakes become harder to manage when rates, labels, tracking and fulfilment checks are spread across separate systems.

Couriers & Freight's e-commerce delivery service compares live carrier rates and generates shipping labels for every order. For businesses shipping 150 orders a month, saving $3 per shipment can retain around $450 in monthly margin while reducing manual administration.

Book your next shipment through Couriers & Freight's e-commerce delivery service.

   

        

   

     

Book Your E-Commerce Delivery With Couriers & Freight

     

Compare carrier rates and book your shipment through our e-commerce delivery service.

     Get a Quote Now