how do I calculate the weight per material for my registration

Split weight by material type for registration

For registration purposes, packaging weight must be reported by material type, meaning separately for paper/cardboard, plastic, glass, metal and wood. In practice, this means that each packaging component you place on the market is weighed or calculated according to the material it is made of: a cardboard box with a plastic window counts toward both the cardboard weight and plastic weight separately, not as a single entry "packaging". For composite packaging, it is common to determine each material's share in grams or kilos per material type, for example based on your supplier's specifications or your own measurement, and then sum this per material type across all packaging used in a year.

This breakdown is necessary because registers such as Verpact determine the contribution and reporting by material type, not by total weight. If you are starting here, it is advisable to first determine which role exactly applies to you, because that determines whether you must report by material at all or whether another party in the chain already does so.

How countries differ in this

The obligation to report weight by material type is essentially the same throughout the EU, because the PPWR is a regulation, but the way a register wants to receive that information varies greatly by country. In Germany, LUCID asks for the material breakdown as the basis for contribution calculation, and anyone supplying from the Netherlands there should check whether registration in LUCID from the Netherlands is mandatory. In the Netherlands, Verpact applies a threshold of 50,000 kg per year below which the reporting obligation lapses, but that threshold is a declining arrangement and not a permanent exemption; it is expected to expire from August 2027 onwards, and until then you can check whether registration with Verpact as a small webshop is already required. France and Belgium have their own classifications and submission formats with their respective competent registers.

Where this follows from the annex to the regulation

Article 44 of Regulation (EU) 2025/40 requires reporting to the register, and Annex VIII of that regulation sets out which documentation must underpin that reporting, including the statement of weight by material type.