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Your Q3 2025 Compliance Calendar: Key Deadlines and What Sellers Need to Know

As the regulatory landscape in the EU continues to evolve, staying ahead of compliance deadlines is more critical than ever for sellers and businesses operating across Europe. Q3 2025 brings a fresh wave of obligations—ranging from environmental reporting to AI transparency and consumer protection. Here’s your essential compliance calendar for July, August, and September 2025, with practical tips to help you stay audit-ready and avoid costly penalties.

July 2025

Packaging & EPR Reporting

  • Final Modulated Base Fees Released: DEFRA (UK) is expected to publish the final modulated base fees for household packaging under Extended Producer Responsibility (EPR).
  • Action: Prepare for payment of these fees and ensure your packaging data is up to date using the Recyclability Assessment Methodology (RAM).
  • Tip: Proactive data collection now will prevent overpayment and streamline submissions later in the year

AI Act: Transparency for Generative AI

  • By June 2025: All generative AI outputs must clearly inform users that content is AI-generated.
  • Action: Review your AI tools and update labeling and transparency notices to meet this requirement

August 2025

Ongoing Data Collection & Review

  • Packaging Data: Continue collecting and validating packaging and recyclability data for EPR compliance.
  • AI Risk Assessments: If you deploy high-risk AI systems, begin preparing for the October risk assessment deadline by reviewing your risk management and conformity evaluation processes

September 2025

MiFID II/MiFIR Amendments

  • 29 September 2025: Deadline for the transposition of amendments to the revised MiFID II/MiFIR framework, aimed at improving transparency and market efficiency in financial services
  • Action: If you operate in the financial sector, review your reporting systems and ensure all changes are implemented by this date.

EPR & Packaging Compliance

  • Payment Due: Payment for final modulated base fees for household packaging is expected during Q3.
  • Action: Ensure all submissions and payments are completed on time to avoid penalties

Ongoing in Q3 2025

Consumer Protection & Digital Markets

  • UK DMCCA Enforcement: The UK’s new consumer protection regime (Digital Markets, Competition and Consumers Act 2024) went live in April, with ongoing enforcement and a focus on drip pricing and fake reviews.
  • Action: Review your customer journey for transparency, ensure compliance with new rules, and prepare for further guidance in Autumn 2025

AI Act: High-Risk AI Systems

  • Preparation: High-risk AI providers should be finalizing risk assessments and conformity evaluations ahead of the October deadline

Compliance Tips for Q3 2025

  • Centralize Data: Use a secure platform to collect and store all compliance documentation, including packaging data, AI transparency reports, and consumer protection policies.
  • Automate Reminders: Set calendar alerts for all key deadlines and reporting periods.
  • Engage Stakeholders: Communicate upcoming obligations to your compliance, IT, and product teams to ensure everyone is aligned.
  • Stay Informed: Regulatory timelines can shift—monitor updates from authorities and industry groups.

Conclusion

Q3 2025 is packed with critical compliance milestones for EU sellers. By preparing early, leveraging digital tools, and staying informed, you can turn regulatory obligations into a strategic advantage—protecting your business and building trust with customers.

#ComplianceCalendar #EUCompliance #EPR #AIACT #ConsumerProtection #Q32025

Sources: Clarity, Numeral, Proskauer Rose, Indeed Innovation, BCLP, Oritain

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