Research stays in Spain have a dedicated, more favourable visa pathway. No minimum course hours, potential multi-year permits, and a stronger path to long-term residency. Here is exactly how it works.
You are a researcher, academic, or PhD student coming to Spain for a formal research stay (estancia de investigación) at a Spanish university, the CSIC (Consejo Superior de Investigaciones Científicas), or another recognised research institution. This guide explains the specific research stay visa pathway, how it differs from the standard student visa, what the hosting agreement (convenio de acogida) must contain, and the enhanced residency rights available to researchers under EU Directive 2016/801.
Unlike language learners who need a minimum 20-hour weekly course, or university students who attend formal academic programmes, researchers on an official research stay have no minimum weekly contact hours requirement. Your qualifying document is the convenio de acogida (hosting agreement) — not a course timetable. This makes the research stay visa significantly more flexible in terms of how you structure your working week.
| Factor | Research Stay Visa | Standard Student Visa |
|---|---|---|
| Core Document Required | Convenio de acogida (hosting agreement) signed by institution director | Acceptance/enrolment letter from accredited school or university |
| Minimum Hours Requirement | None — research activity qualifies regardless of hours | Language schools: minimum 20h/week. University: degree structure |
| Maximum Initial Duration | Up to 3 years (under EU Researcher Directive) | Up to 1 year (renewable annually) |
| Qualifying Activities | PhD research, post-doctoral work, visiting researcher, academic sabbatical, joint research projects | Accredited courses with qualifying hours |
| Financial Requirements | ~€600–700/month (research grants and institutional salaries accepted) | ~€600–700/month (from any verifiable source) |
| Can Researchers Work? | Yes — research activities may be remunerated; additional teaching up to limits | Up to 30h/week with separate authorisation |
| Path to Residency | More favourable — researchers may qualify for specific long-term residency tracks | Student time counts at 50% toward 5-year threshold |
| EU Mobility Rights | Researchers can move between EU member states for research purposes (Short-Stay Mobility Procedure) | No specific EU mobility rights |
The hosting agreement is the single most important document in a researcher's visa application. Here is what it must contain and how to obtain it.
The convenio de acogida (hosting agreement) is a formal document issued by the Spanish host institution — a university, CSIC centre, or other recognised research body — confirming that they will host your research stay. It is not an informal letter of welcome: it is a legally binding document that commits the institution to specific obligations toward the researcher.
The document must be signed by an authorised representative of the institution — typically the rector of the university, the director of the research department, or someone with delegated signing authority. A letter signed by your individual supervisor or a junior faculty member is not sufficient for visa purposes.
The convenio de acogida must state: the researcher's full name and passport details; the research topic and project description; the start and end dates of the research stay; confirmation that the host institution has the resources and facilities to host the research; any remuneration arrangements (stipend, grant, or institutional salary); the name and signature of the authorised institution representative; and the institution's official stamp and CIF number.
The hosting institution must be a recognised Spanish higher education institution or research body. Public universities (Universidades Públicas), private universities with official recognition (Universidades Privadas Reconocidas), CSIC centres, Instituto de Salud Carlos III (ISCIII) centres, CIEMAT, and other public research bodies all qualify. Some private research institutes and hospitals with research departments also qualify, provided they hold official research institution status. Verify with your prospective institution that they have issued hosting agreements before — experienced institutions have standard templates.
Researchers often have institutional salaries, research grants, or fellowship funding rather than personal savings or parental sponsorship. Grant award letters from competitive research programmes — including Marie Skłodowska-Curie Actions, FPI (Formación de Personal Investigador), FPU (Formación de Profesorado Universitario), Juan de la Cierva, or Ramón y Cajal fellowship awards — are accepted as financial proof for the research stay visa. The grant amount must meet the minimum financial threshold (~€600–700/month). European Research Council (ERC) grants and H2020/Horizon Europe project funding documentation are also accepted.
If you are enrolled in a formal doctoral programme at a Spanish university rather than a research stay, the university student guide applies.
Read Guide →Full document checklist including the hosting agreement requirements and financial proof formats accepted for researchers.
View Requirements →Understanding when a researcher's remuneration crosses into work permit territory — and when the researcher visa is sufficient.
Read Comparison →