The Court of Justice of the European Union ruled on 3 March 2026 that national courts of last instance must spell out, in concrete terms, why they chose not to refer EU law questions to Luxembourg.

The judgment answers a question sent by the Netherlands' highest administrative court, the Raad van State, and tightens the duty to give reasons under Article 267 of the Treaty on the Functioning of the European Union (TFEU).

What was the underlying dispute?

A Moroccan national, lawfully resident in Spain, applied for a Dutch residence permit to join his Dutch wife and children in the Netherlands. Dutch authorities refused, citing his existing Spanish permit.

He appealed, arguing EU law entitled him to family reunification. Before the Raad van State, he asked the judges to refer the question to the CJEU. They refused and dismissed the appeal with a short, standard-form explanation.

What did the CJEU hold?

Courts of last resort generally must send unresolved points of EU law to Luxembourg. They may skip the step only when the answer is obvious, already settled, or immaterial to the outcome.

Tuesday's judgment confirms those exceptions but stresses the duty to reason. The court held that the decision not to refer "must, in all cases, comply with the requirement to state reasons … namely to set out, specifically and concretely, the reasons why that exception applies."

The reasoning also applies where no party has formally asked for a referral. It is enough that EU law is raised in the proceedings.

How does the ruling change Dutch practice?

Dutch administrative courts dispose of a large share of immigration appeals through summary dismissals. National rules permit short rejections when arguments repeat settled case law.

The Dutch government defended the practice as essential to heavy caseloads and rising EU law questions. The CJEU was unmoved: formula reasoning cannot satisfy the duty to explain a refusal to refer unless it concretely addresses why the exception applies.

What did scholars and practitioners say?

Sacha Prechal, a former CJEU judge (2010–2024) and professor at Utrecht University, said ahead of the ruling that judges would not have to "spell everything out in every case." The procedural context, she argued, could sometimes make the choice self-evident — "a bit of a case-to-case approach."

Jasper Krommendijk, professor of international and European law at Radboud University, said the judgment sharpens that test. The duty applies "irrespective of whether or not that question is accompanied by an express request to make a reference for a preliminary ruling," he noted, calling the judgment "strikingly concise" given years of Dutch debate on summary reasoning.

Lorenzo Scarcella, a researcher at the University of Luxembourg, framed the ruling as a balance between litigants' rights and judicial efficiency. It "balances the parties' right to an effective remedy and the public interest in the sound administration of justice," he said.

Guillermo Íñiguez, an EU law researcher at Yale Law School, said the decision is likely to lift transparency. Litigants will know why their cases stayed at national level; in some systems, refusal to refer may now be challenged on appeal.

For the applicant, lawyer Ellen Gelok called it "a wonderful ruling," anchoring the duty to reason in the EU treaty framework. She said it requires engagement with both facts and law, curbing standardised reasoning that ignores the specifics of a case.

What happens next?

The Dutch Ministry of Justice and Security said it had taken note of the judgment and was reviewing its implications.

The Raad van State must now apply the ruling and decide whether the Moroccan applicant can stay in the Netherlands. If it again declines to refer, it must give a properly reasoned explanation. The CJEU's interpretation is final and cannot be appealed.