UK Plastic Packaging Tax: how the 30% threshold actually works
The tax is unusual among packaging regulations in that it is purely arithmetic. There is a threshold, there is a rate, and either your packaging clears the line or you pay per tonne. That makes it one of the few compliance questions you can settle with a spreadsheet — provided you measure the right thing.
Plastic packaging components manufactured in or imported into the UK are chargeable if they contain less than 30% recycled plastic by weight. Clear the 30% and the component is not chargeable — but you still have to register, keep records and file if you cross the annual tonnage threshold.
The rule in one paragraph
Two details catch buyers out. First, the test is applied per component, not across your whole packaging portfolio — you cannot average a high-PCR sack against a virgin film and call it 30%. Second, it is a cliff edge, not a slope: 29.9% recycled content is taxed at exactly the same rate as 0%.
That cliff edge is what makes the arithmetic interesting. The last few percentage points of recycled content are the ones that pay for themselves.
Recycled plastic means material reprocessed from recovered plastic waste — pre-consumer or post-consumer. What it does not mean is production scrap that never left your own process, which is generally treated as still being part of manufacturing rather than recovered waste.
What counts as recycled, and how you prove it
The burden of evidence sits with whoever is liable, so the practical question is what your supplier can put in writing. Ask for:
- A recycled-content certificate with chain of custody — GRS is the standard most UK buyers ask for, because it traces the recyclate back through the supply chain rather than simply asserting a percentage.
- Batch-level records, not a one-off type-test. The tax is assessed on what you actually shipped in the period.
- A stated tolerance. A supplier quoting exactly 30.0% is quoting a number that will fail on a bad batch. Specify 35% and you have margin against normal process variation.
That last point is where most of the avoidable tax bills come from. Buyers specify the threshold rather than a working target, then get taxed on the batches that drifted below it.
Recycled resin usually carries a price premium over virgin — and the tax is charged per tonne of chargeable packaging. So the question is simply whether the premium on the recycled content costs less than the tax on the tonnage.
The arithmetic on switching
Work it in this order:
- Take your annual tonnage of chargeable plastic packaging for the UK market.
- Multiply by the current per-tonne rate. That is your exposure if you change nothing.
- Ask your supplier for the delta between your current specification and one at 35% recycled content, expressed per tonne of finished packaging.
- Compare. For most flexible packaging at current rates the switch pays for itself, and the margin widens every time the rate is uprated.
There is a second-order benefit worth pricing in. A structure that already runs at 35% recycled content is most of the way to the EU recycled-content minimums, so you are buying one requalification instead of two.
For non-food packaging — bin liners, refuse sacks, mailing bags, industrial film — recycled content can simply be blended through the structure, and high loadings are straightforward.
Where the recycled content should sit
For food-contact packaging the constraint is the same as under EU rules: recycled polyolefin is generally not authorised in the layer touching the food, so the recycled content goes in an outer layer behind a functional barrier. You can still clear 30% overall, but the structure has to be designed for it rather than reformulated at the last minute.
We run 30% to 70% post-consumer recycled content as stable production, GRS-certified, across bin liners, refuse sacks and mailing bags. On a bin liner programme the practical answer to the tax is usually 50% to 70% rather than a nervous 30% — the film performs, and the tax question stops coming up. See the PCR specification or send us your current spec and we will quote the delta.
Common questions
Is the 30% threshold measured per component or across all my packaging?
Per component. Each plastic packaging component is assessed on its own recycled-content percentage by weight, so a high-recycled-content item cannot offset a virgin one.
Does my own production scrap count towards recycled content?
Generally no. Material reprocessed within the same manufacturing process is normally treated as part of manufacturing rather than recovered waste. Recycled content means plastic reprocessed from recovered pre-consumer or post-consumer waste.
Should I specify exactly 30% recycled content?
No. The threshold is a cliff edge, so a specification written at exactly 30% will fail on any batch that drifts low. Specify 35% or higher to keep margin against normal process variation.
Where to go next
We answer every enquiry within 12 hours and issue a detailed quotation within 24 hours. Send us a specification.