Interreg SUDOE Programme

INTERREG SUDOE Programme: funding for cooperation in Southwestern Europe

Support for innovation, social cohesion, and environmental resilience across Spain, Portugal, southern France, and Andorra.

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Interreg SUDOE is designed to strengthen transnational cooperation and innovation across South-West Europe, bringing together regions from Spain, Portugal, southern France, and Gibraltar. 

 Whether you’re promoting regional sustainability, boosting innovation capacity, or enhancing social and territorial cohesion, the Interreg SUDOE programme funds collaborative projects that tackle shared challenges in areas such as climate adaptation, resource efficiency, and digital transformation. Projects typically range from applied research and pilot initiatives (TRL 4–7) to the validation of transnational solutions with measurable regional impact.

Substantial Funding

Receive up to 75% co-financing through ERDF support to implement impactful transnational projects that strengthen innovation, sustainability, and regional development across South-West Europe.

Wide Thematic Scope

Projects may address climate action, circular economy, digital transformation, natural resource management, and social cohesion, fostering a more sustainable and resilient SUDOE area.

Local & Strategic Projects

Funding supports both regional initiatives and strategic collaborations that boost innovation, cooperation, and competitiveness, advancing shared development goals.

Transnational Cooperation

INTERREG SUDOE connects regions from Spain, Portugal, southern France, and Gibraltar to tackle common challenges and promote integration, sustainability, and territorial cohesion.

75%

Funding rate

€1.3M

avergae project budget

€141M

Total budget (2021– 27)

3

countries

What you need
to know before
applying

Start your eligibility check now

 

💡Tip: Begin preparations at least 3-4 months before the call deadline. Time is needed for strategy alignment, partner identification, technical writing, and budgeting.

About the Interreg SUDOE programme

Eligible Applicants

Entities must be based in eligible regions of Spain, Portugal, France, or Andorra. Projects must involve partners from at least three different countries.

  • Public authorities (local, regional, national)
  • Universities, research institutes, clusters
  • NGOs and private non-profit organizations
  • SMEs and private companies (limited roles)
Eligible geographic areas

Interreg SUDOE covers the South-West European Space, including most of Spain (all regions except the Canary Islands), the southwest of France (Nouvelle-Aquitaine and Occitanie), all regions of Portugal including Madeira and the Azores, and the entirety of Andorra.

Types of Projects Funded
  • Joint strategies for biodiversity and natural resources
  • Innovative rural and demographic revitalization actions
  • Social innovation and cultural/tourism valorization
  • Cross-border governance and capacity building
Funding
  • The Interreg Sudoe Programme 2021–2027 offers a total ERDF budget of €107.4 million.
  • Projects can receive up to 75% co-financing depending on the type of beneficiary.
Key deadlines
  • The next Interreg SUDOE project call is expected in 2026, offering new funding opportunities for transnational cooperation projects across Spain, Portugal, southern France, and Gibraltar.
  • The call is typically launched in spring, with deadlines usually falling between April and May.
  • Exact dates will be announced on the official Interreg SUDOE website: www.interreg-sudoe.eu
Application process

The Interreg SUDOE application process follows a 2-phase submission system managed through the official eSudoe platform (https://esudoe.eu):

  1. 📝 Step 1 – Pre-Proposal (Concept Note): Applicants submit a short 8–10 page concept note summarizing project objectives, partnership, and alignment with SUDOE priorities. Only top-ranked proposals are invited to proceed.

  2. 📄 Step 2 – Full Proposal: Selected applicants then prepare a detailed 40–60 page full proposal, including the work plan, budget, and partner commitments.

Calls usually open in spring (March–May), and all official templates, guidance, and exact deadlines are published on the Interreg SUDOE website.

Evaluation criteria

Interreg Sudoe proposals are evaluated based on strategic relevance, transnational value, partnership quality, impact, and financial feasibility. Projects must clearly align with programme priorities and demonstrate strong cooperation and demonstrate measurable, sustainable results.

Project Requirements

  • Must address common challenges with transnational added value
  • Include partners from at least three different countries
  • Must be results-oriented, measurable, and transferable
Eligible costs

Eligible costs include personnel, travel, external services, equipment, small-scale infrastructure, and admin expenses—directly linked to project delivery and compliant with EU rules.

How We Support Your Interreg SUDOE Application

  • Backed by PhDs, engineers, and finance experts, we guide you through every stage of the Interreg SUDOE application and project lifecycle.
  • We combine strategic insight with technical excellence to help innovators secure the right collaborative funding and manage their projects successfully.
Control de convocatorias (1)

1. Opportunity Scouting

We identify the most suitable Interreg SUDOE calls for your project, ensuring alignment with thematic priorities and geographic eligibility. We also scout other EU opportunities that fit your profile. When needed, we support partner searches across Spain, France, Portugal, and Andorra and review initial technical and financial inputs.
Diagnóstico y preparación

2.  Application Support

We guide the development of a clear and competitive SUDOE proposal, supporting the technical, economic, and cooperation components. We help refine the work plan, budget, and partner roles while ensuring full compliance with programme rules and expectations.

Obtención de ayuda (2)

3. Submission & Grant Agreement

We support the submission process and help coordinate communication with the Managing Authority and Joint Secretariat. After approval, we guide you through the grant-agreement steps—administrative checks, partnership documentation, budget alignment, and required forms—for a smooth transition into implementation.

Gestión del proyecto (1)

4. Project Management

We support implementation by monitoring progress, preparing technical and financial reports, assisting in audits and verification visits, guiding fund disbursement, and managing administrative communication to keep the project compliant and on track.

Need expert advice for your Interreg SUDOE proposal?

Our consultants guide you through everything you need to know about Interreg calls, requirements, and winning strategies.

Contact our team

Other funds that might
interest you

Interreg POCTEP Programme

Interreg POCTEP

Strengthen cross-border cooperation between Spain and Portugal through projects that promote innovation, sustainability, and territorial cohesion in shared border regions.

  • Up to €1–2 million per project, co-financed at up to 75% by the ERDF.
  • Open to public and private organisations working collaboratively across Spanish and Portuguese border regions.

 
Horizon Europe Collaborative Projects

Horizon Europe – Pillar 2

Tackle global challenges through collaborative R&I with EU support.

  • Get Research & Innovation Actions (RIA) and Innovation Actions (IA) funding for large-scale collaborative projects.
  • For international consortia (min. 3 entities from 3 countries), aiming for scientific excellence and real-world impact.
EIC Accelerator programme

EIC Accelerator

Bring your deep-tech innovation to market with blended EU funding and investment.

  • Get up to €2.5 million in grant and €0.5–10 million in equity (or blended finance).
  • For startups and SMEs with technologies at TRL 6–8, ready to scale and commercialise globally.

Bring your deep-tech innovation to market with blended EU funding and investment.
EIC STEP Scale-UP Programme

EIC STEP Scale-Up

Scale your strategic tech company with major EU equity investment through the EIC STEP programme.

  • Get €10–30 million in equity to drive industrial deployment and growth in deep-tech or critical technologies.
  • For startups, SMEs, and small mid-caps with technologies at TRL 6–9, aiming to scale in key strategic areas for Europe.
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“Evolution was pivotal in improving and refining our business model and go-to-market strategy. Besides, the writing of the proposal was elevated to a very high standard; we could not have achieved this without Evolution’s help.”

Fadhil Musa, co-founder of Delox

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“We have received support from Evolution at all stages of the application process. This has been very important in complying with the appropriate procedures and submitting the supporting documentation on time. This kind of support is crucial if you have no previous experience in managing EU-funded projects, ensuring that you make the most of their potential. The relationship has been excellent, and the response time has been almost immediate.”

Beatriz Salvador, Innovation Manager of Biome Makers

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“Evolution Europe has been brilliant in supporting our project’s administration, communication, and progress tracking, playing a key role in our success”

Pavel Pavlovsky, CEO of GeoKinesia

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“We highlight the Evolution team’s flexibility in offering a proposal tailored to startups, their communication with international teams, and their ability to improve consortia and tasks.”

Ana Bouchet, Scientific Co-Founder of Lifesome Therapeutics

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“The team at Evolution Europe showed an extraordinary ability to understand both the company’s challenge and the scope of the underlying scientific work, providing critical and constructive insights that significantly improved the original proposal.”

Ignasi Hontecillas, Director of Quality and R&D of Agrocat

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FAQ

Frequently Asked Questions about the Interreg SUDOE programme.

What is Interreg funding?

Interreg funding is EU financial support for cross-border, transnational, and interregional cooperation projects. It is part of the European Territorial Cooperation (ETC) objective under EU Cohesion Policy.

What is the budget of Interreg Europe?

Interreg Europe’s budget is approx. €379 million ERDF, while Interreg SUDOE has €115.7 million ERDF for 2021–2027.

 

What is the Interreg Sudoe funding rate?

The Interreg SUDOE funding rate is up to 75% of eligible project costs, financed by the European Regional Development Fund (ERDF). Project partners must provide the remaining 25% as co-financing from national, regional, or own institutional funds.

What is the Interreg SUDOE success rate?

The success rate in Interreg SUDOE calls varies by funding priority and number of applications received. There is no official estimate, but it is quite competitive. Generally, only the most relevant and well-prepared proposals are selected, ensuring that funded projects deliver strong transnational impact and align closely with the programme’s strategic objectives.

How long does it take to get funded?

For Interreg SUDOE, the time from application to funding approval typically takes around 9 to 12 months.

Here’s the usual timeline:

  1. 📝 Call launch → submission deadline: about 2–3 months

  2. 🔍 Evaluation and selection: around 6 months after submission

  3. 🤝 Grant agreement and project start: within 2–3 months after approval

What is the TRL required to apply to the Interreg Sudoe programme?

Unlike Horizon Europe, Interreg SUDOE does not formally require a specific TRL in its eligibility criteria. However, in practice, most successful projects operate around TRL 4–7, meaning they focus on applied research, pilot testing, and validation of solutions rather than early-stage research or full commercialization.

What is the duration of Interreg Europe projects?

Interreg Europe projects usually last 3–4 years, while Interreg SUDOE projects typically run for 2.5–3 years, depending on their scope and activities.

Is Interreg part of ERDF?

Yes. Interreg programmes are funded through the European Regional Development Fund (ERDF).

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