Published 8 min read
The McKinsey Cover Letter: Do You Even Need One?
Do you need a cover letter for McKinsey? For a standard online application, usually no. Most McKinsey offices mark it optional, and the resume is what actually gets you screened in or out. But optional is not the same as pointless. If you are applying off-cycle, through a referral, from a non-target school, or switching industries, a short letter can answer the question a screener is quietly asking about your resume: why you, why consulting, why now. Skip it when you have nothing new to add. Write it when you do, and keep it short.
What the cover letter is actually for
I spent years reviewing resumes at McKinsey in batches of roughly 400, and I can tell you where the cover letter sits in that process: after the resume, not before it. A resume gets scored fast, on a handful of signals, in under a minute. A cover letter only gets opened if the resume already earned a second look, and even then, most screeners skim it in twenty seconds looking for one thing: a reason this candidate is applying that is not generic.
That is the whole job of the letter. It is not a second resume. It is not a place to restate your GPA or repeat your bullet points in paragraph form. It exists to answer the one question a resume cannot answer on its own, which is why you specifically want this job at this firm, told in a way that could not be copy-pasted into someone else's application.
When you can skip it
If the application portal marks the cover letter as optional and you have no unusual story, referral, or circumstance to explain, do not force one. A generic letter that just repeats your resume in sentence form adds nothing and can actually cost you time you should be spending on your resume and your case prep. Recruiters told me over and over that a mediocre cover letter changes nothing, because the resume already made the decision. Do not write one out of guilt. Write one because it does real work.
When you should write one anyway
There are a handful of situations where a cover letter earns its place.
- You have a referral or a contact at the firm, and the letter is your chance to name them and explain the connection in your own words. If you have not built that kind of contact yet, the guide to networking your way into consulting is worth reading before you start drafting anything
- You are applying off-cycle, outside the standard recruiting window, and need to explain the timing
- You come from a non-target school or a country office with a smaller pipeline, where a letter can carry context a resume alone cannot
- You are switching industries or functions and the resume, read cold, raises an obvious "why consulting" question
- You are reapplying after a past rejection and need to briefly address what has changed since then
In every one of these cases, the letter is doing a specific job: closing a gap the resume leaves open. If you cannot name the gap, you probably do not need the letter.
The structure that works
A cover letter for McKinsey should fit on one page, in four short paragraphs, and should never take longer than 250 to 350 words. Here is what each paragraph needs to accomplish.
| Paragraph | What it needs to do |
|---|---|
| Opening | Name the office, the role, and if you have one, the referral or event where you connected. One sentence, no throat-clearing. |
| Why consulting | Tie a specific piece of your own experience to structured problem-solving or client-facing work, not a general claim that you enjoy solving problems. |
| Why this firm | Give one concrete, specific detail beyond prestige: a practice area, a project you read about, a conversation with someone who works there. Vague enthusiasm reads as filler. |
| Close | Restate interest in one sentence, point back to the resume for detail, thank the reader, and stop. |
Four paragraphs, one page, no exceptions. If you find yourself writing a fifth paragraph, it is almost always restating something the resume already covers, and it should be cut.
The lines that get a letter thrown out
Certain phrases are so common that screeners stop reading the moment they appear. If your draft has any of these, cut them before you submit anything.
- "I am a hard-working team player with strong communication skills"
- "I have always been passionate about consulting"
- Any sentence that could be copy-pasted into an application to a different firm without changing a word
- A paragraph that restates your resume bullets in sentence form
- An opening line that starts with "My name is" or restates the job title back at the reader
None of these are wrong in the sense of being false. They are wrong because they carry zero information. A screener reading your fortieth letter of the week has learned nothing new by the time they finish a sentence like that, and a letter that teaches them nothing might as well not exist.
A composite example, annotated
This is not a real candidate. It is a composite built from patterns I saw work, written to show the shape rather than to be copied word for word.
"I am applying to the New York office for the 2026 Business Analyst program, having connected with Priya Chen, a second-year Associate, at your firm's info session last month. During my internship rebuilding a supply chain forecasting model for a mid-size manufacturer, I found that the most valuable part of the work was not the model itself but structuring an ambiguous problem for a client who did not yet know what question they were asking. That is the part of consulting I want more of. McKinsey's client work in industrial and advanced manufacturing sits closest to what I already know, and it is where I think I can add value fastest while I learn the rest. I have attached my resume for further detail on my background, and I would welcome the chance to discuss how it fits the team. Thank you for your consideration."
Notice what is missing. No claim of being passionate. No restating of GPA. No line about being a team player. Every sentence either names something specific or moves the letter forward.
What to cut before you submit
Before you send anything, read your draft once and cut anything that would survive being copy-pasted into a letter for Bain or BCG unchanged. If a sentence would work for any firm, it is not doing its job here. The same test applies to industry: if a sentence would work for a candidate applying to a bank or a tech company with no edits, cut it. A cover letter for McKinsey has to sound like it could only have been written for McKinsey, by you, and if it does not pass that test, it is filler no matter how polished the sentences sound. If you want more worked examples before you draft your own, a set of consulting cover letter examples is a faster way to see the pattern than staring at a blank page.
It also helps to have someone else read it cold and tell you, in one sentence, what the letter is arguing. If they cannot summarize your reason for applying in a single sentence after reading it once, the letter is too vague, no matter how many words it has.
The bottom line
A cover letter for McKinsey is not required in most cases, and writing a mediocre one out of obligation wastes time you could spend on your resume, which is what actually gets you screened. If you do have something specific to explain, whether a referral, a career switch, or an unusual path into the applicant pool, write four tight paragraphs that say something a generic letter never could, and get your fundamentals in place first with the complete consulting resume guide.
Go deeper
If your path into the applicant pool runs through a referral or a networking contact rather than a cold application, the cover letter is only one part of that story. The free resume module in Cut to the Case walks through the resume itself, which is what actually earns you the interview the cover letter can only support.
Get the complete Cut to the Case course →
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Frequently Asked Questions
Do you need a cover letter for McKinsey?
Usually not for a standard online application, since most McKinsey offices mark it optional and the resume does the actual screening. You should write one if you have a referral, an off-cycle application, a non-target background, or a career switch that the resume does not explain on its own.
Does McKinsey actually read cover letters?
Screeners open a cover letter mainly after the resume has already earned a second look, and they skim it for one specific reason for applying rather than reading it word for word. A generic letter rarely changes the outcome either way, which is why a specific one is worth the effort and a filler one is not.
How long should a McKinsey cover letter be?
One page, four short paragraphs, roughly 250 to 350 words. Anything longer usually means you are restating the resume instead of adding new information.
What should a McKinsey cover letter include?
An opening naming the office and any referral, a paragraph tying your specific experience to structured problem-solving, a paragraph giving one concrete reason for choosing that firm beyond prestige, and a short close pointing back to the resume. Every sentence should fail the test of working for a different firm unchanged.
Should I write a cover letter if I have a referral?
Yes. Naming the referral and the context of the connection is one of the strongest reasons to write a letter at all, since it gives the screener context a resume cannot carry on its own.
What is the biggest mistake in a McKinsey cover letter?
Restating the resume in paragraph form and filling the space with generic enthusiasm like being passionate about consulting or being a strong team player. Screeners have read that sentence thousands of times, and it tells them nothing about you specifically.