Cover Letter vs CV
A CV is a structured summary of your work history, education and skills, while a cover letter is a short, personal message explaining why you want this particular job and why you are a good fit for it. They should work together, with the cover letter adding context rather than repeating the CV word for word.
What a CV is for
Your CV is a factual, structured record: what jobs you have had, what you studied, and what skills you have. It is designed to be scanned quickly and understood at a glance, with a consistent format from top to bottom.
Because it is designed to be scanned rather than read closely from start to finish, a CV relies heavily on clear structure and formatting to do its job well, which is why layout and consistency matter so much within it.
What a cover letter is for
A cover letter is your chance to explain, in your own words, why you are applying for this specific role and this specific employer. It can cover motivation, context that does not fit neatly on a CV, and anything you particularly want to highlight.
Unlike a CV, a cover letter can read more like natural writing, in full sentences and paragraphs, rather than a structured list of facts.
It is also the natural place to mention anything a CV cannot easily explain, such as a career change, a gap, or a specific reason you are drawn to that employer rather than a similar one.
How they should work together
Avoid simply restating your CV in paragraph form in your cover letter. Instead, use the letter to add context: why this role interests you, how your experience connects to it, or an explanation for something like a career change or a gap.
A good test is to ask whether the letter would still make sense without the CV attached. If it does, it is likely adding genuine context rather than just repeating facts already listed elsewhere.
Think of the CV as answering 'what have you done', and the cover letter as answering 'why does that matter for this role'. Keeping that distinction in mind makes it easier to avoid overlap between the two documents.
When a cover letter is optional
Some applications, especially through job boards or quick-apply systems, do not ask for a cover letter at all. Where one is optional but not required, a short, well-targeted letter can still help you stand out, particularly for roles you are genuinely keen on.
If time is limited and you are applying to many roles at once, it is reasonable to prioritise a cover letter for the applications that matter most to you, rather than writing one for every single application.
An optional cover letter is also a useful place to mention something specific about the employer that drew you to apply, which can help your application feel more considered than a CV alone can convey.
Keep the cover letter short
Three or four short paragraphs is usually enough: why you are applying, what you bring, and a brief closing line. A cover letter does not need to be long to be effective, and a shorter, focused letter is often read more carefully than a long one.
A long, dense cover letter can work against you, since a reader is less likely to read every word closely. A short, well-structured letter is more likely to be read in full.
A simple structure to follow
A straightforward structure works for most cover letters: an opening line saying which role you are applying for and where you saw it, a middle paragraph connecting your experience to the role, and a short closing paragraph confirming your interest.
This structure keeps the letter easy to write and easy to read, without needing to reinvent the format for every application.
Once you have written one cover letter using this structure, later ones become much quicker, since you are largely adjusting the middle section to reflect each new role rather than starting again from nothing.
A closing line thanking the reader for their time and confirming your interest in discussing the role further rounds off the letter naturally without needing anything more elaborate.
Matching the tone to the employer
A cover letter can be slightly more personal in tone than a CV, but it should still stay professional. Matching the general tone of the job advert, whether that is quite formal or more relaxed, can help your letter feel well suited to the employer.
Avoid being overly casual or overly stiff; aim for a natural, clear writing style that still reads as professional correspondence.
If you are unsure of the right tone, a slightly more formal, straightforward style is usually a safe default, since it reads well regardless of the employer's own communication style.
