Meta Platforms could face its first EU antitrust fine for bundling its Marketplace service with Facebook. The European Commission is expected to issue the fine within weeks, following accusations that Meta gave its classified ads service an unfair advantage by linking it with Facebook.

Allegations state Meta abused its dominance by imposing unfair trading conditions on competing classified ad services advertising on Facebook and Instagram. The potential fine could reach $13.4 billion, or 10% of Meta’s 2023 global revenue, though such high fines are rare.

A decision is likely to come in September or October, before EU antitrust chief Margrethe Vestager leaves office in November. Meta maintains that the European Commission’s allegations are baseless, arguing its product innovation is pro-consumer and pro-competitive.

In a separate development, Meta has been charged for not complying with new tech rules due to its pay-or-consent advertising model launched last November. Efforts to settle the investigation by limiting the use of competitors’ advertising data for Marketplace were rejected by the EU but accepted by the UK regulator.