How to Reduce Your Packaging Costs Without Cutting Corners

Packaging is one of those business costs that's easy to ignore when you're starting out and increasingly hard to ignore as volume grows. A few pence per parcel doesn't feel significant on order one. Across a thousand orders a month, it's a meaningful line in your accounts. The good news is that most small businesses and online sellers are paying more per parcel than they need to, often for straightforward reasons that are easy to fix without compromising on quality or presentation.

This guide covers the main levers for reducing what you spend on packaging, and the things worth not cutting even when you're trying to bring costs down.

The most common reasons packaging costs too much

Before getting into solutions, it's worth being specific about where the overspend usually sits. Most of the time it comes down to one or more of these: buying in small quantities from the wrong places, using the wrong bag or box size for what's being sent, using more packaging material than a parcel actually needs, or not reviewing packaging spend regularly as volume grows and better pricing becomes available.

None of these require big changes to fix. They're mostly habits that formed early and haven't been revisited.

Buy in larger quantities from a specialist supplier

This is the single biggest lever for most sellers and it doesn't require changing what you buy, only where and how much you buy at a time. A mailing bag bought individually from a Post Office or supermarket can cost 25 to 40 pence. The same quality bag from a packaging supplier in a pack of 500 can come down to a few pence each. That's not a marginal saving; it's a fundamental difference in cost per parcel that compounds significantly at volume.

The same principle applies to tape. A roll from a stationery shop costs several times more per metre than the same product bought in a case from a packaging supplier. For something you go through as regularly as tape, this adds up faster than most people realise.

The practical implication is to stop buying packaging reactively, grabbing a small pack when you run low, and instead forecast your usage across four to six weeks and order in quantities that get you to the next pricing tier. This doesn't mean buying more than you'll use; it means buying the right amount at the right time rather than small amounts repeatedly at a higher unit price.

Get the bag size right

Using a mailing bag that's significantly too large for what you're sending costs more in two ways. The bag itself is larger and therefore more expensive per unit than the size you actually need. And in some cases, an oversized parcel pushes you into a higher postage bracket with the courier, which is a far larger cost than the bag itself.

The fix is straightforward: measure what you're actually sending, folded as it would be packed, and match the bag size to the item rather than defaulting to a larger bag because it's easier to seal. Our mailing bag size guide breaks this down by garment type if clothing is what you're primarily sending.

Standardising on two or three sizes that cover your product range also helps. Rather than stocking five or six sizes at low quantities each, identifying the two sizes that cover 80 per cent of what you send and buying those in proper bulk quantities gets you to better unit pricing on each.

Don't use more tape than the job needs

Tape is a consumable that people rarely think about as a cost until they notice how quickly rolls disappear. The H-tape method, one strip along the centre seam and one down each side seam of the box, is both the most structurally sound way to seal a box and the most efficient in tape terms. A single strip across the centre that fails means wasted tape on the failed attempt, plus the additional tape needed to fix it. Getting the seal right first time with the right method uses less tape overall than getting it wrong and trying again.

Similarly, using 75mm tape across the board when you only need 48mm for most of your boxes is a straightforward overspend. Wider tape is worth the extra cost for heavier cartons where a stronger bond matters. For standard e-commerce parcels, 48mm is sufficient and costs less per metre.

Stop using packaging you don't need

Bubble wrap inside a mailing bag containing a folded t-shirt is both unnecessary and adds to your postage weight. Oversized boxes filled with excessive void fill for an item that would travel perfectly safely in a smaller, tighter box with less fill. These small excesses per parcel add up to a meaningful cost across a year of orders, and they don't add any protection that genuinely matters for the items being sent.

The principle is to match protection to actual risk. Clothing in a correctly sealed mailing bag needs no internal protection beyond the bag itself. A ceramic mug needs cushioning. A book needs corner protection. Using the same level of packaging across all product types regardless of what each actually needs wastes material on things that don't benefit from it and adds cost without adding value.

Review your packaging setup as your volume grows

The packaging setup that made sense at 20 orders a month often isn't the most cost-effective at 200. Pricing tiers shift, different roll lengths and pack sizes become available, and the time cost of regularly reordering small quantities starts to become meaningful. Most suppliers, including Mr Bags, have pricing that reflects volume, so a review of your current quantities against what you're now sending is worth doing every few months rather than assuming what you first ordered is still the best option at your current scale.

This is also the point to consider whether any of your packaging choices were made for convenience rather than cost, such as buying grip seal bags locally rather than in bulk from a supplier, or using a more expensive tape format because it was what was easily available when you started. These choices make sense early on and can be worth revisiting once the business is more established.

Where not to cut costs

Reducing packaging costs doesn't mean buying the cheapest thing available across the board. A few areas where cutting cost typically ends up costing more:

Bag thickness is the most important one. A mailing bag below 40 to 50 microns for standard clothing parcels is a false economy. Bags that split in transit mean damaged items, refunds, reshipments, and negative reviews. The cost of those outcomes vastly outweighs any saving on bag price. Buy the cheapest bag at an adequate thickness rather than a thinner bag just because it's cheaper.

Tape adhesive quality matters similarly. Tape that doesn't bond reliably to recycled board, or that loses its grip in the cold warehouse conditions many couriers operate in, results in parcels that arrive open. The cost of that outcome is not recovered by whatever you saved on tape.

Presentation is worth protecting too, up to a point. If you've built any customer expectation around how your parcels look, whether that's a specific bag colour, a particular label, or generally tidy packing, stripping that back entirely to save a fraction of a penny per order risks more in repeat business and reviews than it saves in packaging.

A simple cost-per-parcel calculation

If you've never done this, it's worth spending ten minutes working it out. Add up what you spend on mailing bags or boxes, tape, labels, and any other packaging materials in a typical month. Divide by the number of orders you sent in that month. The resulting figure is your packaging cost per parcel.

For most small sellers buying in modest quantities from mixed sources, this figure is higher than it needs to be. For businesses buying in appropriate bulk from a specialist supplier, it can be as low as a few pence for a standard mailing bag parcel. Knowing your actual number makes it easy to see whether the changes above are worth making and how much difference each would make.

You can browse our current pricing across mailing bags, grip seal bags and packaging tape to see what the numbers look like at different quantities. If you're currently buying packaging from multiple sources and want to consolidate into a single supplier order, get in touch and we can help you put together an order that covers everything you need at the best available pricing for your volume.