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Horizon Europe Deadlines: How the Two-Stage Process Actually Works

Many calls do not have one deadline - they have two, months apart. Here is how to use that structure instead of being surprised by it.

Illustration: Horizon Europe two-stage application process timeline

Horizon Europe deadlines confuse first-time applicants because many calls do not have one deadline - they have two, months apart, and they work differently. Understanding the two-stage process is the difference between planning calmly and panic-writing a full proposal in three weeks.

How the two-stage process works

Stage 1: the short proposal

Stage one asks for a short outline - typically around 10-15 pages covering the concept, objectives and consortium. The evaluation is lighter, and a much larger share of applicants passes through than people expect. The point of stage one is to filter ideas, not to judge full detail.

The gap

After the stage-one deadline, evaluation takes roughly 2-4 months. Applicants who pass receive an invitation to stage two. This gap is the most misused time in EU funding: teams that wait for the invitation lose months; teams that start drafting the full proposal during evaluation arrive at stage two nearly finished.

Stage 2: the full proposal

Stage two is the full application - 45-70 pages with detailed work packages, budget, impact pathways and consortium agreements. The deadline is fixed and absolute: the Funding & Tenders Portal closes submissions at 17:00 Brussels time, and late is late.

Stage 1 deadline: short outline proposalEvaluation (2-4 months) - start drafting nowInvitation to stage 2Stage 2 deadline: full proposalEvaluation and grant agreement
Infographic: the Horizon Europe two-stage funnel from outline to grant

Five rules for hitting Horizon deadlines

  1. Track the opening date, not just the deadline. Calls typically stay open for months. Starting at opening gives you the full runway.
  2. Treat stage one as easy to pass but fatal to miss. The outline is short; the deadline is unforgiving.
  3. Draft stage two during the stage-one evaluation. The gap is preparation time in disguise.
  4. Build the consortium before the outline is due. Partner search after passing stage one is too late.
  5. Submit 48 hours early. Portal load on deadline day is a known failure mode. Submit early; you can update until the deadline.

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Frequently asked questions

What is a two-stage call in Horizon Europe?

A call with two deadlines: a short outline proposal at stage one (concept, objectives, consortium), and a full proposal at stage two for those invited. The stages are typically several months apart.

How long is the gap between Horizon Europe stage 1 and stage 2?

Usually around two to four months for stage-one evaluation. Strong teams spend this gap drafting the full stage-two proposal rather than waiting for the invitation.

What time do Horizon Europe deadlines close?

Call deadlines close at 17:00 Brussels time on the stated date in the Funding & Tenders Portal. Submissions are final at the deadline, so submitting 48 hours early is standard practice.