It is my understanding that you pay per product category. If you get all your electronics in one sending then you pay only 3€ total and not per part.
In theory it should be based on the HS code, no?
> The 3 € fee is applied per declared item, where ‘item’ means each unit of a product that is declared on a separate line. Specifically, the Commission defines "item" as one or more goods in a consignment sharing the same tariff classification, description and, where applicable, origin.
Now, the type of declaration matters [2] - if you're filling an H1 (standard customs) then you pay per item but if you're filling an H6 (postal declaration) or an H7 (Courier or low-value consignment declaration) then you pay per category. So anyone saying that it's always one or the other is, at the very least, oversimplifying.
[1] https://trade.ec.europa.eu/access-to-markets/en/news/eu-appl...
[2] https://www.avalara.com/blog/en/europe/2026/07/eu-customs-h1...