HOW A SMALL CHANGE IN PACKAGING CAN TRANSFORM SHIPPING COSTS
Two packages can contain exactly the same product, weigh almost the same and travel to the same customer — yet one can cost significantly more to ship. The difference may be a few centimetres of cardboard.
1. THE BOX CAN BE MORE EXPENSIVE THAN YOU THINK
Imagine an online store selling a small electronic accessory.
The product weighs 500 grams. The company packs it into a large cardboard box because that is the size it already has available.
The box protects the product, but it also creates a problem: most of the space inside is empty.
That empty space may look harmless. In logistics, however, it can increase transportation costs, consume warehouse capacity and reduce the number of parcels that fit inside a delivery vehicle.
The company is not just shipping a product. It is paying to transport the space surrounding it.
2. SHIPPING COMPANIES DO NOT ALWAYS CHARGE ONLY BY WEIGHT
Many businesses assume that a lighter parcel automatically costs less to ship.
But carriers such as UPS and FedEx can use dimensional weight, a pricing method that accounts for the space a parcel occupies relative to its actual weight.
The carrier compares the parcel's actual weight with its dimensional weight and may charge based on whichever is greater. The precise calculation and rules depend on the carrier and service. <Cite refs={["turn427731search0","turn427731search5"]}/>
This creates an important distinction:
A large box containing a lightweight product can be more expensive to ship than a compact box containing the same product.
The parcel's physical size becomes part of its economic cost.
3. THE MATHEMATICS BEHIND THE BOX
UPS Italy explains dimensional weight using the parcel's length, width and height. For the calculation described in its guidance, the volume in cubic centimetres is divided by 5,000 to obtain dimensional weight in kilograms. <Cite refs={["turn427731search0"]}/>
Consider a simplified example using that divisor.
A parcel measuring 40 × 30 × 20 cm has a volume of 24,000 cubic centimetres.
Divide 24,000 by 5,000, and the dimensional weight is 4.8 kg.
Now imagine the same product packed into a 20 × 15 × 10 cm box.
Its volume is 3,000 cubic centimetres, giving a dimensional weight of 0.6 kg.
<text size="sm" color="secondary">Illustrative calculation using UPS's stated divisor. Actual billing depends on the carrier's service, measurement rules, rounding and applicable terms.</text>
The product has not changed. The packaging has.
Yet the calculated dimensional weight has fallen from 4.8 kg to 0.6 kg. If dimensional weight determines the charge, the smaller package could produce a substantial saving.
4. WHY A FEW CENTIMETRES CAN MATTER SO MUCH
Dimensional weight is based on volume, not simply on the sum of the three dimensions.
That matters because reducing several dimensions at once can produce a disproportionately large reduction in volume.
For example, reducing a box's length, width and height by 10% reduces its volume by approximately 27.1%.
The new volume is:
(0.9 \times 0.9 \times 0.9 = 0.729)
In other words, a 10% reduction in every dimension produces a 27.1% reduction in volume.
For a business shipping thousands of parcels, a small packaging redesign can therefore have a much larger effect on total shipping volume than the individual measurements initially suggest.
5. AMAZON'S PACKAGING STRATEGY
Amazon has invested in reducing unnecessary packaging and developing formats that fit products more closely.
According to its European packaging update, published in October 2025 and updated in September 2026, the company had avoided more than 5.4 million metric tons of packaging across Europe and North America since 2015 through its packaging-reduction programmes. <Cite refs={["turn427731search4"]}/>
The strategy includes using smaller packages, flexible bags and envelopes, and shipping eligible products in their original packaging rather than adding another box.
These changes can reduce the amount of material required and help products occupy less space in the delivery network.
For a business operating at Amazon's scale, packaging decisions are not merely a design issue. They are part of a large logistics optimisation problem.
6. THE ORIGINAL PRODUCT BOX CAN BECOME THE SHIPPING BOX
Some products already have packaging designed to protect them during transport.
Adding another box around that packaging may be unnecessary if the original packaging is sufficiently durable and suitable for delivery.
Amazon's Ships in Product Packaging programme works with qualifying products so they can be delivered in their own packaging without an additional Amazon box, envelope or bag. The programme uses testing and product qualification to determine what can be shipped this way. <Cite refs={["turn427731search13"]}/>
The business benefit is straightforward: fewer packaging materials, less packing work and potentially less space used in the delivery network.
But this approach is not suitable for every product. Some items need protection against impact, moisture, theft or damage to their retail packaging.
The objective is not to remove packaging indiscriminately. It is to remove packaging that adds cost without adding enough protection or value.
7. WHY COMPANIES SOMETIMES SHIP AIR
A customer opens a delivery and discovers a tiny item surrounded by cardboard, paper and empty space.
It may look ridiculous, but there are reasons oversized packages occur. Warehouses handle thousands of product shapes and sizes, and a business may have limited packaging formats, automated equipment constraints or products that need additional protection.
Amazon has explained that it uses machine-learning systems to help determine suitable packaging for products and orders, reducing unnecessary boxes, filler and other materials. <Cite refs={["turn427731search11"]}/>
The problem is that an inefficient package can create costs at several stages: materials, packing labour, storage, transportation and waste handling.
A box that is cheap and convenient to use at the warehouse can become expensive across the entire supply chain.
8. PACKAGING AFFECTS HOW MANY PRODUCTS FIT ON A TRUCK
Transportation capacity is limited by both weight and space.
If packages are unnecessarily large, a delivery vehicle may reach its space limit before reaching its weight limit. That means the carrier transports fewer parcels per journey.
Smaller, well-designed packages can improve vehicle utilisation by allowing more orders to fit into the available space. Amazon identifies right-sized packaging as one way to use delivery capacity more efficiently. <Cite refs={["turn427731search7","turn427731search27"]}/>
The effect extends beyond an individual shipment.
If a logistics network can carry more parcels per vehicle, it may be able to handle more orders with the same transportation capacity, depending on the routes, service requirements and other operational constraints.
Packaging therefore influences not only the cost of a parcel but also the efficiency of the wider delivery system.
9. THE HIDDEN COST OF CARDBOARD
A larger box often requires more cardboard. It may also require more tape, protective inserts and filler material.
Each extra component has a cost, even if it appears inexpensive on its own.
A company shipping 100,000 orders a year might spend an additional €0.10 on packaging for each order.
That adds up to €10,000 annually.
If the company can safely reduce the packaging cost by €0.10 per order, it could save €10,000 before accounting for redesign expenses, equipment changes, testing or any increase in product damage.
The calculation is simple, but its importance grows with volume.
10. WHY THE CHEAPEST BOX IS NOT ALWAYS THE BEST BOX
Reducing packaging size is not automatically a good decision.
If a box becomes too small or loses necessary protective materials, more products may arrive damaged. The company could then face refunds, replacements, customer-service expenses and reputational harm.
Imagine saving €0.20 per shipment but creating a meaningful increase in damage claims. The apparent packaging saving might disappear once the additional costs are included.
This is why packaging engineers must balance several objectives:
Minimise unnecessary dimensions and material.
Protect the product throughout handling and transport.
Make packing fast and reliable.
Consider the customer's unboxing experience.
Evaluate the total cost, including returns and damage.
The best package is not necessarily the smallest. It is the smallest package that reliably does the job.
11. A PACKAGING REDESIGN CAN CHANGE THE PROFIT MARGIN
Suppose an online retailer sells a product for €30.
Its product cost is €12, its packaging costs €1, and its shipping expense is €6. Before other operating expenses, the retailer has €11 remaining per sale.
Now imagine that a packaging redesign reduces the packaging cost from €1 to €0.70 and the shipping expense from €6 to €5.
The amount remaining becomes €12.30.
That is an improvement of €1.30 per order, or nearly 12% compared with the original €11 contribution.
These figures are hypothetical, and the actual savings depend on the carrier's pricing rules and the redesign. But they illustrate an important point: companies can improve profitability without raising the selling price or changing the product itself.
12. THE ACCOUNTING LESSON: LOOK BEYOND THE UNIT COST
Businesses often compare packaging options by asking how much each box costs.
A €0.50 box may appear more economical than a €0.70 box. But if the cheaper box is much larger and increases shipping charges, it could cost more overall.
A better analysis considers the total cost per delivered order.
That includes the packaging itself, dimensional shipping charges, packing labour, storage, damage rates and returns.
Management accounting is useful here because it encourages companies to evaluate all relevant costs rather than focusing on a single purchase price.
The cheapest input is not necessarily the cheapest solution.
13. WHY SMALL BUSINESSES SHOULD CARE TOO
Large retailers have the volume to justify sophisticated packaging systems, but smaller online businesses can benefit from the same principle.
A business selling cosmetics, accessories, books or handmade products can review the dimensions of its most frequently shipped items.
It can compare different box sizes, check the carrier's dimensional-weight rules and test whether lighter mailers or fitted cardboard packaging provide adequate protection.
The company should also measure actual shipping charges rather than relying on estimates alone. Carriers may apply rounding rules, minimum billable weights or additional surcharges.
For a small business with tight margins, avoiding unnecessary shipping costs can make a meaningful difference.
14. PACKAGING AND SUSTAINABILITY
Smaller packages can also reduce material use and the amount of empty space transported.
Amazon's sustainability reporting identifies lightweight, right-sized packaging as a way to use fewer materials and occupy less space in delivery vehicles. <Cite refs={["turn427731search1","turn427731search25"]}/>
However, sustainability claims need context. A smaller package is not automatically better if it causes product damage, requires extra protective layers or leads to more replacement shipments.
Material choice, recyclability, manufacturing, transportation and product protection all matter.
Good packaging design attempts to reduce waste while preserving the product and avoiding unnecessary deliveries.
15. THE COMPETITIVE ADVANTAGE CUSTOMERS MAY NEVER SEE
Customers usually compare product prices, delivery fees and delivery speed. They rarely see how a company designed its boxes or calculated its warehouse packing rules.
Yet those behind-the-scenes decisions can influence the final price a retailer can afford to charge.
A business that consistently reduces packaging and logistics costs may have more room to offer competitive delivery fees, protect its margins or invest in other parts of the customer experience.
The advantage is often invisible to the customer, but it can influence the economics of the entire business.
MAACAT PERSPECTIVE
Packaging looks like a small operational detail. In reality, it connects product design, accounting, logistics, customer experience and sustainability.
A few centimetres can change a parcel's dimensional weight. A smaller package can reduce material use. And a saving that appears insignificant on one order can become substantial when multiplied across thousands of deliveries.
The lesson for businesses is simple: do not measure the cost of a product only by what is inside the box. Measure the cost of getting it safely to the customer.
Sometimes, the most valuable business improvement is not a new product, a higher price or a major marketing campaign.
It is simply a better box.
