An image of new Twitter owner Elon Musk is seen surrounded by Twitter logos in this photo illustration.
Twitter Blue was rolled out to European Union countries in February and March.
  • Elon Musk's Twitter Blue subscription is a flagship project to make the company profitable.
  • But the advertised subscription prices in the European Union don't factor in taxes.
  • An EU consumer protection watchdog told Insider this breached pricing rules in the bloc.

Elon Musk's Twitter Blue subscription is breaking European Union rules about unfair business practices, a consumer watchdog in the bloc told Insider.

Specifically, the advertised subscription prices don't factor in taxes, which violates consumer-protection laws in the 27-country union, a spokesperson for the watchdog said.