Short answer
A consulting cover letter is a one-page, 250-400 word note that answers three questions fast: why consulting, why this firm (proven with a named contact or event), and why you, backed by three concrete proof points. Networking comes first because a referral or conversation gives the letter its strongest line. Many offices now treat the letter as optional, so check each application.
Key takeaways
- Network before you write: a named consultant or recruiting event is the strongest line in any cover letter.
- Screeners give the letter about as long as the resume, so the first paragraph has to carry your case.
- Use three parts: why consulting, why this firm, and three proof points from your resume.
- Keep it to one page and roughly 250-400 words.
- Requirements vary by firm and office; when the letter is optional, a strong one still helps borderline and career-switching candidates.
What should a consulting cover letter say?
A consulting cover letter should answer three questions on one page: why consulting, why this specific firm, and why you. The firm paragraph is strongest when it names a consultant you met or an event you attended. The "why you" paragraph gives three proof points drawn from your resume. Aim for 250-400 words in four or five short paragraphs.
The letter interprets the evidence in your consulting resume. Its job is to make the screener's decision easy by telling them, in plain words, why your evidence fits this firm.
Network before you write a single line
The best cover letters are written after the applicant has already met the firm. Recruiting events, campus presentations, coffee chats with consultants and alumni from your university all give you something no template can: a specific name and a specific conversation to reference.
A referral carries even more weight. Prep providers report that roughly half of consulting hires had some internal connection, and LinkedIn research across industries found referred candidates about four times more likely to be hired. A referral makes sure a strong profile gets a careful read; a weak profile with a referral is still likely to be rejected.
Practical ways to build those contacts:
- Attend every on-campus presentation and introduce yourself to one consultant per event.
- Search your university's alumni network for consultants in the office you are targeting.
- Ask for a 20-minute call with one focused question about their work, never a request for a job.
- Send a short thank-you note within 24 hours and ask whether you may mention the conversation.
Screeners give your letter about 30 seconds
A cover letter gets roughly the same attention as a resume: around 30 seconds, sometimes less. When I wrote about this in 2012 the number was the same, and the volume of applications has only grown since. Screeners skim the opening, look for the firm-specific paragraph and scan for evidence.
That means your first paragraph must state who you are, which role and office you are applying to, and one line that makes you worth reading. Everything after it should be skimmable.
Use a three-part structure
The structure below works for undergraduate, MBA and experienced-hire applications. Adjust the proof points to your level.
| Paragraph | Purpose | What goes in it |
|---|---|---|
| Opening | Context in two sentences | Degree, role, office, and the contact or event that brought you here |
| Why consulting | Motivation grounded in experience | A moment in your work or studies where structured problem solving changed an outcome |
| Why this firm | Proof that you did the research | The consultant you spoke with, what you learned, and one firm-specific feature (practice area, office, training model) |
| Why you | Three proof points | One each for analytics, leadership and impact, with numbers |
| Close | Short and confident | Availability for interviews and a thank-you |
A useful test from former McKinsey screeners: swap the firm's name for a competitor's. If the letter still reads correctly, the why-this-firm paragraph is too generic.
Many firms now treat the cover letter as optional
Cover letter requirements vary by firm, office and role, and they change between recruiting cycles. Several 2026 prep guides report that McKinsey makes the letter optional for most roles, that BCG has historically expected one in many offices, and that Bain varies by office. The sources disagree on details, which is itself the main lesson: read each office's application form instead of relying on a general rule.
When the field is optional, I still recommend writing one if you are a career switcher, come from a non-target school, are applying to an office outside your home country, or need to explain a weak spot. For a candidate with a strong resume and a referral, a short, sharp letter does no harm and occasionally tips a close decision.
Keep it to one page
One page is the ceiling; 250-400 words is the target. Longer letters suggest you cannot synthesize, and synthesis is what consultants are paid for. Use the same header and font as your resume so the two documents read as a set.
Two annotated example cover letters for strategy consulting
The two letters below show the three-part structure at work for two different profiles: a graduate with a thesis and student activities, and a career switcher with six years of operations experience. Both people, their contacts and their results are fictional. The firm name is left as a placeholder, because the firm paragraph must come from your own conversations.
Example 1: a master's graduate applying to a strategy firm
Femke is completing a one-year MSc in Strategic Management in Rotterdam and applying for a business analyst role in a strategy firm's Amsterdam office. The letter runs about 285 words.
Dear [recruiter's name],
I am applying for the Business Analyst position in [Firm]'s Amsterdam office, starting September 2027. I am completing a one-year MSc in Strategic Management in Rotterdam, and I met Eva Jansen from your consumer practice at the campus case evening on 8 October.
My thesis drew me to consulting. For four months I worked inside a regional Dutch grocery chain to find out why fresh-produce waste was rising. By matching delivery data with store sales, I showed that two of its eleven stores caused 40% of the waste, because they ordered fixed weekly volumes. The operations director changed the ordering rule for both stores within a month. Turning a fact base into a decision that quickly is the work I want to do every day.
Eva told me she presented a pricing analysis to a client's commercial director in her second week, and that her team leader gave her written feedback after every client meeting. That mix of early responsibility and close coaching is what I am looking for, and her description of your work with Dutch retailers matches the sector I know best.
I would bring three strengths:
- Analysis: I built my thesis model from 1.2 million transaction lines in Python and Excel; the thesis was graded 8.5 out of 10.
- Leadership: As a board member of my study association, I led a team of six that organized a career week with 14 employers and 600 visitors.
- Drive: I funded part of my bachelor's by tutoring statistics; 27 of my 30 students passed the resit.
I am available for interviews in Amsterdam or online from 1 November. Thank you for considering my application.
Kind regards,
Femke Hoekstra
| Paragraph | What it does |
|---|---|
| Opening | States role, office, start date and the named contact in two sentences, so a 30-second reader has the context at once |
| Why consulting | Uses one experience with a cause, a number and a decision, which backs the motivation with evidence |
| Why this firm | Repeats two concrete things the consultant said, which makes the paragraph pass the name-swap test |
| Three strengths | One proof point per quality, each with a number, matching what screeners look for on the resume |
| Close | Gives availability and stops; no repeated summary |
Example 2: a career switcher applying to a strategy team
Ruben has a bachelor's in industrial engineering and six years in contract logistics, the last three running a 220-person distribution center. He is applying for a senior consultant role in the operations strategy team of a Big Four strategy arm. The letter runs about 310 words.
Dear [recruiter's name],
I am applying for the Senior Consultant role in [Firm]'s operations strategy team in Amsterdam. After six years in contract logistics, the last three managing a 220-person distribution center, I want to work on the network decisions I have spent my career implementing. A conversation with Mark de Boer, a manager in your supply chain team, convinced me to apply.
I met consulting from the client side. In 2024 a retail customer asked us to cut its delivery cost per order by 15%, and its advisers ran a five-month network review with us. I led the site-level work: we re-slotted 9,000 products and cut pick time per order from 64 to 49 seconds, a 23% reduction. The review settled in five months a debate my company had held for two years, and I want to do that analysis across many clients.
Mark explained that your operations strategy projects often continue into implementation with the same team, and that experienced hires join client work from their first week. Both suit someone who knows what happens on the warehouse floor after the recommendation is signed off.
Three results from my current role transfer directly:
- Business cases: I wrote the case for a EUR 2.1 million picking automation, approved by the board; it paid back in 2.8 years.
- Leadership: I manage eight shift leaders and cut absenteeism from 9% to 6% in 18 months.
- Client relationships: I am the operational lead for three retail accounts worth EUR 18 million in annual revenue; all three renewed in 2025.
The consulting toolkit is newer to me. Over the past three months I practiced more than 30 cases with former consultants, and I would welcome the chance to be tested on them.
I am available for interviews from 1 November. Thank you for your time.
Kind regards,
Ruben Mertens
| Paragraph | What it does |
|---|---|
| Opening | Frames six years of experience as a reason to switch and names the contact, so the reader sees intent before history |
| Why consulting | Shows the candidate has already worked next to consultants and delivered a measured result in that project |
| Why this firm | Ties a feature the manager described (projects that continue into implementation) to the candidate's background |
| Three results | Translates operations work into consulting vocabulary: business cases, people leadership, client relationships |
| The gap | Names the obvious concern, missing case experience, and answers it with evidence of preparation |
| Close | Short, with availability |
The switcher letter needs the extra "gap" paragraph, because the screener's first doubt is whether an experienced operator can work at consulting pace. Answering it in two sentences removes the doubt before it costs an interview.
Five mistakes that get letters rejected
These are the errors I saw most often when screening applications and coaching candidates:
- Generic praise. Phrases about a firm's "prestigious reputation" tell the reader nothing. Replace them with something you heard from a consultant.
- Repeating the resume. The letter should interpret two or three achievements, never list all of them.
- Wrong firm name. It still happens, and it ends the application immediately.
- Typos and inconsistent formatting. Some firms read the letter as a writing sample; one error signals carelessness.
- Unsupported claims. "Strong analytical skills" means nothing without the number that proves it.
Stephan's note: The letters that moved me as a screener all had one thing in common. Within the first five lines, I knew whom the candidate had spoken to and what specifically had convinced them about the firm. That single detail showed effort, initiative and genuine interest at once.
From letter to interview
A strong letter and resume earn the invitation; the case interview decides the offer. Once you are invited, firm-specific preparation pays off quickly: see the guides to the McKinsey case interview and how firms screen applications.
My book Cracking the Case covers the full journey from cover letter to final round, including five ways to make an application stand out.
Frequently asked questions
Do McKinsey, BCG and Bain require a cover letter?
It depends on the office and role. Several 2026 prep guides report that McKinsey treats the letter as optional for most roles, while BCG and Bain vary by office. Check the application form for each office.
Who should I address a consulting cover letter to?
Address the recruiting contact named in the posting or on the campus recruiting page. If there is none, use the office's recruiting team, never a generic greeting such as 'To whom it may concern'.
Can I use the same cover letter for every consulting firm?
Reuse the proof-point paragraph, and rewrite the why-this-firm paragraph each time. If the letter still works after you swap the firm's name, it is too generic.
Should I mention a referral in my cover letter?
Yes. Name the consultant you spoke with and one specific thing you learned, as long as they agreed to be mentioned.
Is a cover letter worth writing if it is optional?
Usually yes. It matters most for career switchers, applicants from non-target schools and candidates who need to explain a weak spot such as a gap or a lower GPA.
Should a career switcher's cover letter mention the career change directly?
Yes. Name the likely concern, such as missing case experience, in one or two sentences and answer it with evidence, for example the number of practice cases you have done or a project you ran alongside consultants.