On sourcing: the advice below comes from the career offices of Harvard and MIT and from Prospects, the UK graduate careers service, all linked in Sources. Figures on how often cover letters are read come from surveys run by resume-builder companies and are labeled as such.
What should match
The design
- Reuse your resume's header on the letter, with your name and contact details in the same order and style, is the simplest way to make the two read as a pair.
- Harvard's guidance is to use the same font type and size for the resume and the cover letter. MIT suggests 10 to 12 point for the letter.
- Keep the letter to one page. Harvard says a cover letter should be "no more than a single page"; Prospects says a letter should not exceed one A4 page.
- Send both in the same format the employer asks for, named the same way, for example "Jordan-Lee-Resume.pdf" and "Jordan-Lee-Cover-Letter.pdf".
The facts
Every job title, employer name, date and number in the letter should be identical to the resume. If the resume says you cut costs by 12%, the letter should not say "about 15%". A reader who checks one document against the other should find the same story.
The target
Build both documents on the same posting. Pick the two or three requirements the posting stresses most and that your resume backs up best, and make those the spine of the letter. Use the posting's own terms for them, such as the job title and the key skills, so that the letter and the resume describe you in the same words the employer used. Choosing those terms is covered in how many keywords a resume should have.
What should be different
Write sentences, not bullets. MIT's advice is blunt: "Try not to simply repeat your resume in paragraph form." The letter's job is to "complement your resume by offering a little more detail about key experiences", in MIT's words. Prospects says the same of the UK version: "Cover letters should complement your CV but not duplicate it."
Give the why. A resume lists what you did; the letter can say why this employer and this role, which the resume never does. One specific reason beats three general ones.
Tell the story behind a bullet. Take one resume line and tell what happened around it: the problem, what you did, what changed. For example:
Resume bullet: Cut month-end close from 10 to 6 days by automating reconciliations in Power Query.
Letter paragraph: Your posting puts a faster month-end close first. At my current company I took ours from ten days to six by automating the bank reconciliations in Power Query. The harder part was getting the team to trust the new numbers, so we ran both processes side by side for two months before switching.
The number is the same in both documents; the letter adds the context and the judgment that a bullet has no room for.
A structure that keeps them in step
Prospects suggests three to five concise paragraphs. One way to fill them:
- Opening: the role you are applying for and your strongest match to it, in one or two sentences.
- First proof: the posting's top requirement, and the story behind the resume bullet that shows it.
- Second proof: the next requirement, with a different example.
- Why this employer: something specific about the company, the team or the work.
- Close: when you are available and what you would like to happen next.
Write it fresh for each application. Prospects advises rewriting the letter every time, and a letter built on one posting's requirements will not fit another's.
Before you send
- Same header, font and font size as the resume.
- One page.
- Every title, date and number matches the resume.
- The job title and the company are named.
- The main points match the posting's top requirements.
- No paragraph repeats a resume bullet word for word.
- Written for this application, not reused.
See what your resume is missing — before you apply.
CVder reads the job posting and your resume side by side, then shows the exact terms to add and the formatting a parser would trip on.
Q.Do recruiters read cover letters?
The best-known figures come from resume-builder companies, so read them as indicative. Resume Genius reported that 83% of the 625 US hiring managers it surveyed read most cover letters, and ResumeGo reported that 87% of the 236 hiring professionals in its survey read them. If the posting asks for a letter, or the application form has room for one, a short matching letter is cheap insurance.
Drafting the letter with CVder
With CVder Pro, the cover letter tool drafts a letter from your resume and the job description, so the draft starts from the same facts and the same posting as your resume. Read it against the resume, check every number, and rewrite anything that does not sound like you. What AI drafting does well and badly is covered in AI cover letter generator from a job description, and the resume side of the same posting in how to tailor your resume to a job description.
- Match the design: use the same header, font and size, and keep it to one page.
- Match the facts: keep titles, dates and numbers identical in both documents.
- Match the target: build both on the same two or three requirements from the posting.
- Leave the wording different: write full sentences, the why, and the story behind one or two bullets.
- Rewrite it for every application.