Most packaging cost reduction programmes start in the wrong place. Someone calls three suppliers for competitive quotes on the same specification, picks the cheapest, and declares the exercise done. That approach captures maybe 5-8% in price variance and leaves the structural opportunities completely untouched.
The businesses that reduce packaging costs meaningfully do it differently. Here's where the real savings typically are.
Right-sizing consistently delivers 12-18% cost reduction on like-for-like applications
Packaging that's too large for the product is the single most consistent source of unnecessary cost I see across client businesses. The effects compound across the supply chain.
Oversized boxes use more board material than the product protection requires. They need more void fill to prevent the product moving inside the box. They perform worse under dimensional weight pricing from parcel carriers, where you pay for the larger of actual weight or volumetric weight. They stack less efficiently on pallets, increasing vehicle movements per thousand units shipped. From 2025, they generate higher EPR fee liability because you're reporting and paying on more packaging weight than you need.
A typical e-commerce operation right-sizing its packaging range typically reduces combined packaging and carrier costs by 12-18% on like-for-like specifications. That figure holds consistently across businesses at different scales because the dimensional waste is usually 25-40% of the box volume, and all of the cost consequences follow proportionally.
Board grade over-specification: where your spec sheet is costing you money
Packaging specifications get written once and then persist. The person who wrote the original spec is usually long gone. The business has changed, the product may have changed, and nobody has revisited whether the board grade is still appropriate.
Over-specifying board grade is very common. Double-wall corrugated on goods that would be adequately protected by 150gsm kraft liner C flute single-wall is a typical example. Double-wall board typically costs 25-35% more per square metre than equivalent single-wall. If your stacking load calculation doesn't justify it, you're paying that premium for nothing.
Ask your corrugated supplier for BCT data and the load calculation that supports your current specification. If they can't provide it, ask a different supplier. If the BCT is considerably higher than your actual stacking requirements with appropriate humidity and time factors applied, there's scope to move to a lighter grade.
The reverse under-specification also occurs. If you're running damage claims from collapsed pallets or transit failures, the cost of damage typically exceeds the cost of moving up to the correct board grade. That's worth fixing too.
Volume consolidation: the conversation most businesses avoid
Most businesses buy packaging from multiple suppliers across different product lines, locations or categories. Each account is managed independently, so the total spend is fragmented and no single supplier relationship carries enough volume to attract serious commercial attention.
A supplier doing £40,000 per year of business with you has limited incentive to sharpen pricing. A supplier doing £120,000 per year of business with you is a different conversation. Consolidating spend across even two or three packaging categories with a single supplier often produces 8-12% pricing improvement on existing specifications without any specification change, simply because the volume makes the relationship commercially significant.
The obstacle is usually that purchasing is distributed across different buyers, departments or sites, each managing their own supplier relationships. A spend analysis across categories is the starting point: how much does the business spend on packaging in total, and how many suppliers are receiving it?
Printed packaging inventory: a hidden cost most buyers underestimate
Printed packaging has higher minimum order quantities and longer lead times than plain. If you have branded boxes across several sizes and print variants, you're carrying excess stock of some and running into shortfalls on others.
Standardising your print approach reduces this problem considerably. Options include: moving to a single printed box size with a plain label panel for variants, using a branded inner element (tissue, insert card) with a plain outer corrugated box, or consolidating SKUs to reduce the number of distinct printed items. Each approach has trade-offs, but all of them reduce the combination of minimum order exposure and dead stock write-offs that printed packaging generates when managed without a clear inventory strategy.