KKDIK 2026: The Two Deadlines You Can't Miss

Two key KKDIK deadlines fall in 2026: 30th September and 31st December. They are only three months apart, leaving very little room to improvise.

If you place substances on the Turkish market, the rest of this year will decide whether your products can stay there. A recent notice from the Turkish Ministry (MoEUCC) made the September deadline (Provisional Registration) mandatory for every substance, every tonnage band, and every company, with no exceptions, and inspections will begin immediately after. Three months later, the first full registration deadline applies to high-tonnage substances, CMRs, and aquatic hazards.

March 2026 Update: What Changed for KKDIK Provisional Registration

The March 2026 update changed two things about Provisional Registration: who has to do it and how.

• It is now mandatory for everyone. Previously, Provisional Registration was required only when the Lead Registrant could not submit a full dossier by the deadline. Now it applies to every registrable substance, regardless of tonnage band, hazard classification, or how organized your SIEF is.

• A new individual Provisional Registration pathway is open in the Turkish Chemical Registration (KKS) portal. Until now, Provisional Registrations had to go through the Lead Registrant. The new pathway lets you submit your own dossier directly through KKS, without waiting for anyone else. For companies with a blocked SIEF, this is now a real option.

The Two KKDIK Deadlines of 2026

• 30 September 2026: Provisional or Full Registration Number required for every registrable substance. This applies to everyone - every substance, every tonnage band. Without a registration number, the substance cannot be placed on the Turkish market.
• 31 December 2026: First full registration deadline. This one depends on tonnage and hazard classification: substances at ≥ 1,000 t/year, Aquatic Acute 1 or Aquatic Chronic 1 at ≥ 100 t/year, and CMR 1A/1B at ≥ 1 t/year. 

If your substance falls into both categories, you face two deadlines only three months apart. The later full registration deadlines (December 2028 for 100–1,000 t/year and December 2030 for 1–100 t/year) still apply, but the work you do this year will form the basis for what follows. 

KKDIK Compliance is a Project Management Problem, Not Just a Regulatory One

Hearing it on a presentation slide, “two deadlines in 2026” sounds manageable. In practice, it isn’t.

For each substance, you need to track which deadline applies, the tonnage band, whether you are registering jointly or individually, who your certified KDU is, what data is already available, what data is missing, who owns each piece of work, and the status of each dossier. Multiply that across tens or hundreds of substances and several teams, and the question stops being “do we understand KKDIK?” and becomes “do we have a system to actually manage and run this?”

The companies struggling most right now are not the ones with regulatory gaps — they are the ones tracking everything in scattered spreadsheets and systems, with notes everywhere, no clear ownership, and no shared view of progress. This is exactly the gap our Registration Management solution is built to close. It keeps the full KKDIK project in one place: substances, legal entities, registrations, projects, deadlines, statuses, notes, attachments, and the cross-team collaboration that holds it all together.

From Scattered Spreadsheets to One System

If you are planning how to run KKDIK across the next two deadlines, the easiest next step is to see what a single source of truth looks like in practice — that’s our solution, opesus Registration Management software.

→ Contact us for a demo: we’re happy to tailor a walkthrough for your own substance portfolio and team setup and show you how Registration Management handles a KKDIK registration from start to finish — including managing deadlines, notes, attachments, collaboration, and status. Get in touch to set up a call!

On the data-sharing side, LoA Market handles Letters of Access, contracts, and payments in one place. Worth a look before September, when negotiations with counterparties become more difficult.

KKDIK in 2026 is not a deadline you can leave to the last minute. It is two deadlines, back to back, with very little margin for “we’ll figure it out later”. The teams that finish 2026 without missing a deadline will be the ones treating it as a real project, with a real plan.