A cover letter for an internship is not a shorter version of a job application letter. You are not selling finished work — you are asking a company to take on a training commitment, and in Spain that commitment arrives with paperwork the company has to plan around.
That is why the generic templates fail. They spend three paragraphs on a career you have not had yet and say nothing about the two questions the company actually needs answered: when can you start and who signs the agreement. This guide covers the four-paragraph structure that works when your CV has no job history, three templates you can copy, and the Spanish-specific details most candidates leave out.
What Changes in a Cover Letter for an Internship
Someone reading a normal application asks one question: can this person do the work? Reading an internship application, they ask two more — is the paperwork viable, and does the placement fit the academic calendar.
That shifts what belongs on the page. Your degree, your project work and your availability move to the front. The "proven track record" language that fills ordinary cover letters has nothing to attach to, and a reader spots it immediately.
| The letter has to prove… | Standard application | Internship application |
|---|---|---|
| You can do the work | Past roles and results | Coursework, projects, a portfolio |
| You fit the team | Sector experience | Why this company, specifically |
| Hiring you is practical | Notice period | Agreement, dates, weekly hours, tutor |
What Do You Write If You Have No Experience Yet?
You write what you have evidence for. A subject with a real deliverable, a final-year project, a student association you actually ran, a summer job in an unrelated sector — all of it is checkable, and checkable beats enthusiastic every time.
- A coursework project with a result someone can open: a report, a prototype, a dataset, a campaign.
- A responsibility with a number attached: 40 members, 12 events, a €900 budget, three months.
- A tool you know well enough to be useful on day one, named exactly as the posting names it.
- Any job at all — retail, hospitality, tutoring — described by what it taught you about deadlines and customers, not by the job title.
What does not work is the sentence every reader has seen a hundred times: "although I have no professional experience, I am a fast learner." It concedes the weakness and offers an adjective in return. The mechanics behind any cover letter written without work experience are the same: swap the missing job history for something verifiable, never for enthusiasm.
Agreement, Schedule and Tutor: What Only You Can Confirm
These three details are the reason an internship letter exists as its own format. The company cannot look them up. Answering them in the letter removes the first three emails a recruiter would otherwise have to send you.
The agreement. Spanish university placements run under a convenio de cooperación educativa signed between the university and the host company. Royal Decree 592/2014 makes that agreement mandatory (article 7) and requires two tutors: one at the company and one at the university (article 10). If your faculty already has a convenio with them, that sentence alone can move you ahead of every other applicant.
Curricular or extracurricular. The same decree separates placements that form part of your study plan from voluntary ones that do not (article 4), and sets the length of the voluntary kind at preferably no more than half the academic year (article 5.1.b). Say which one you need — it decides whether the company is dealing with your faculty or only with you.
Social security. Since 1 January 2024 students on unpaid training placements are registered with Spanish Social Security. In the first year alone, the Ministry of Inclusion recorded 944,547 young people registered on that basis. Small companies hosting their first intern are often unaware of it, so mentioning the convenio signals you know the process exists.
| State this | Written like this |
|---|---|
| Type of placement | "Curricular placement, 300 hours, part of my degree in [field]." |
| Agreement status | "The [University] already has a convenio de cooperación educativa in place with [Company]." |
| Availability | "Available from [date], mornings Monday to Thursday, up to 25 hours a week." |
| Academic tutor | "My academic tutor, [Name], can confirm the paperwork at [email]." |
The Four-Paragraph Structure
Four paragraphs, under 300 words, one page. Anything longer competes with your CV instead of introducing it, and the reader is scanning both in under a minute.
- 1
Why this company
Name the specific team, product or project you want to work on, and where you found it. Never open with your own situation.
2 sentences
- 2
Your strongest proof
One project, subject or responsibility described by what you produced and for whom. Numbers if you have them.
3 sentences
- 3
The practical block
Type of placement, hours, start date, convenio status and academic tutor. Plain and factual.
2 sentences
- 4
The close
Offer an interview, name your attachments and stop. No repeating what the letter already said.
1 sentence
The order matters more than the wording. Opening with what you want rather than what they do is the single most common reason an internship letter reads as generic, and the first sentence is where it happens. A set of opening lines sorted by situation covers the first-job case in detail.
Three Cover Letter Templates for an Internship
Square brackets mark what you replace. Every one of them should be replaced with something specific — a bracket left half-filled is worse than no letter.
1. Curricular university placement
Dear [Name or "internship team"],
I am writing about a curricular placement with [team or department] at [Company]. I follow your work on [specific product, project or client], and [concrete detail about it] is the closest match I have found to what I want to do after finishing my degree.
I am in my [year] year of [degree] at [University]. For [subject or final-year project] I built [deliverable] using [tools], which [result: was used by X people, cut Y time, was graded Z]. I also [second responsibility with a number attached].
The placement is curricular: [number] hours, part of my study plan. [University] can sign a convenio de cooperación educativa with you, and my academic tutor, [Name], handles the paperwork. I am available from [date], [days and hours per week].
I would be glad to talk about how the placement would work. My CV is attached.
Kind regards,
[Full name] — [phone] — [email]
2. Vocational training (FP) placement
FP applications carry a detail worth stating: Organic Law 3/2022 declares Spanish vocational training dual from level C upward, so every FP graduate passes through a company. The placement is not a favour the company is doing you — it is a built-in part of the qualification, and saying so calmly reframes the request.
Dear [Name or "hiring team"],
I am completing [FP qualification] at [centre] and I am looking for the company training phase with [Company]. I chose you because [specific reason tied to what they do, not to their size].
During the course I have worked with [tools, machines or software], and for [module or project] I [concrete task with a result]. My tutor rates me highest on [skill], which is the part of the job I enjoy most.
The training phase runs [dates] and my centre handles the agreement and the insurance. I am available [days and hours], and I can start on [date].
I would welcome a short call or a visit to the workshop. My CV is attached.
Kind regards,
[Full name] — [phone] — [email]
3. Speculative application, no advertised opening
Dear [Name],
You have no internship advertised, so I am writing on the chance that one is possible. I read [article, case study, product update] and I would like to work on [that specific area] with your team.
I study [degree] at [University] and I have spent the last [period] on [project], which [result]. It is the same kind of problem as [the thing the company does], at a much smaller scale.
I can do this as an extracurricular placement, which means a convenio between [University] and you and no cost beyond your team's time. [Number] hours, [days], starting whenever suits you from [date].
If there is nothing now, I would still value ten minutes of your time. My CV is attached.
Kind regards,
[Full name] — [phone] — [email]
What Mistakes Get an Internship Cover Letter Rejected?
Almost none of them are about writing quality. They are about the letter answering the wrong question, or leaving the practical block out entirely so the company has to chase you for dates.
Do
- Name the team, product or project you want to join
- Give exact dates, weekly hours and days available
- Say whether the placement is curricular or extracurricular
- Mention the convenio and your academic tutor by name
- Keep it to one page and under 300 words
Avoid
- Opening with what you want to gain from the experience
- Writing that you have no experience but learn fast
- Sending the same letter with the company name swapped
- Leaving the start date and the hours to be agreed later
- Attaching the letter without reading the brackets back
The other silent rejection is a first line that could open any letter to any company. A cover letter hook that earns the second paragraph is worth more rewriting time than the rest of the page combined.
Write the practical block once and it barely changes between applications. The first two paragraphs do have to change every time, and that is where the effort goes: read the company's site, pick one real thing, and name it. If you would rather start from a tailored draft than a blank page, our AI cover letter generator builds the first version from your CV and the posting, and you rewrite the opening in your own words.
Frequently Asked Questions
How long should a cover letter for an internship be?
One page, and realistically under 300 words. Four short paragraphs is the working format: company, proof, practical details, close. Anything longer repeats the CV.
Should I send it in the body of the email or as an attachment?
Paste it in the body of the email and attach only the CV, unless the posting asks for a separate file. Attachments add a click, and small companies often read applications on a phone.
Do I have to mention that the placement is unpaid?
You do not have to name a figure, but you should say which type of placement it is. Curricular and extracurricular are treated differently, and since 2024 both require registration with Social Security, so the company needs to know which one it is signing up for.
Can I send the same letter to several companies?
The practical paragraph stays the same. The first two do not: if a reader cannot tell your letter was written for them, it reads as a mailshot, and internship inboxes are full of those.
What if I do not know who to address it to?
Check the company page on LinkedIn for whoever runs the team you want to join. If nothing comes up, "Dear internship team" is fine — "To whom it may concern" is not.
Does the university send the letter for me?
No. The university signs the convenio and assigns your academic tutor once a company has said yes. Finding the company and writing to them is your part of the process.