Six days to prepare for McKinsey Case Interview from zero. Should I postpone?

Hi,

Postpone, if the option is open. Most candidates need four to eight weeks and 20 to 30 live cases to get comfortable. Going in unprepared costs you the interview and triggers a cooling-off period, which is a much worse outcome than asking for a later slot.

Asking to move within the same cycle should not count against you. Keep it simple and don't over-explain: say you'd like to move to the late-August timeline and ask what is available. Do not mention prep as the reason; scheduling is enough.

If the recruiter says the early slot is final, take it and use the six days on live cases with real partners, not books.

Franco

Hi there,

I would suggest to postpone to give yourself more time to prep. On average (and of course dependent on many factors), candidates take ~1-2 months to really prep effectively for the case interview process. 

It's not that its not possible to pass an interview without any practice, but in reality i've almost never seen this (there are 1-2 consultants I know that literally did not practice, but they are the exception rather than the norm)

There is no downside/harm to asking for it to be postponed, at worse they will tell you no.

In anycase, you might find my articles helpful:
 

The 1 Day Case Interview Prep Plan

Breaking into Consulting from a non-traditional background

Using AI for Case Preparation

All the best!

Hi,

Six days from zero is really really stretched to prepare properly for a McKinsey interview, so I would request to postpone, framing it simply around wanting to give the process your full attention rather than mentioning that you are starting from scratch.

If it is not possible to move it, build a quick theoretical foundation and start casing with peers and a coach. In your situation the latter is really what can move the needle.

Hope it helps, and feel free to DM me if you want to discuss this further.

Federico

If you're truly starting from zero, I'd seriously consider asking for a later date.

Six full days can be enough to build a foundation, but it's very difficult to become genuinely interview-ready in that time. Case interviews are a skill, and while some people learn quickly, there's usually no substitute for enough live practice.

I also wouldn't worry too much about asking for a reasonable postponement. Recruiters generally understand that candidates sometimes need a bit more time, especially if you're asking for another slot within the same recruiting cycle rather than delaying by months.

That said, before postponing, ask yourself one question:

Can you realistically fit 10–15 quality live cases into the next six days?

If the answer is yes, and you're willing to treat it like a full-time job, you might decide to keep the interview. If the answer is no, I'd rather interview two or three weeks later and give myself the best chance.

Finally, don't read too much into the wording of the invitation email. The fact that you were invited is what matters. Now the focus should be on giving yourself the best chance to convert that opportunity.

Hi Howard,

First of all, congratulations on the invitation from McKinsey!

I would be happy to share my thoughts on your questions:

• First of all, I would strongly advise you to postpone and take the regular late August slot. Recruiters move interview dates all the time and it does not go into any file as a negative, as long as you ask early, ask once, and keep the reason simple, for example that you want to give the process your full attention after a commitment you already have. What does hurt you is walking into the first round unprepared, because with McKinsey a rejection normally means waiting 12-18 months before you can apply again.
• Moreover, six days from zero is not realistic for the interviews, and the fact that you picked up the McKisney Solve pre-interview assessment quickly does not change that. McKinsey Solve rewards pattern recognition on your own screen, while the interviews are a live conversation where you have to structure out loud, do math while someone watches, and stay calm when you are interrupted. That only comes from doing live cases with real partners, and there is no version of that which fits into six days. With three or four extra weeks it becomes very doable.
• Lastly, do not read anything into the wording of the email. Language like your application truly stands out is standard in those templates and it goes to a large group of candidates, so it tells you nothing about how you compare.

If you would like a more detailed discussion on how to best prepare for your upcoming McKinsey interviews, please don't hesitate to contact me directly.

Best,

Hagen

Hi there,

congratulations on the interview invitation. A lot of applications get filtered out in the written stage already so making it to the actual interviews is quite an opportunity. You should therefore make the most of your chance and go in well prepared. If your current baseline is zero, I'm afraid 6 days won't be enough to get you into competitive shape. You should postpone to give yourself more time. Keep in mind that you will likely be competing with other applicants who have been preparing for this for weeks or months.

Best of luck

You should ask to postpone to the late August timeline immediately. Six days from zero case prep is simply not enough, even if you study full time.

A failed interview means a 12 to 18-month ban before you can reapply. Burning your attempt when you have a legitimate option to move to the main batch is an unnecessary risk, especially coming from a non-target school where getting the invitation is already a big win.

Recruiters want you to perform at your best. Asking for a couple of extra weeks to prepare properly will not hurt your standing or leave a bad impression.

Be polite, tell the recruiter you want to ensure you present your best self, and request the late August date. Then use those extra three weeks to build real casing habits.

hey Howard!

I’d say it depends a lot on your current level and how quickly you can get comfortable with case interviews. Six days of full time preparation can actually be enough to get you to a solid level from zero, especially if you already picked up Solve quickly. I wouldn’t postpone purely because you feel underprepared.

That said, if you genuinely have the option to move it without giving a strong reason, there’s also nothing wrong with taking a little more time. The key question is whether those extra weeks would materially improve your performance.

If you want, send me a bit more about your background and how much time you can realistically dedicate over the six days, and I’m happy to judge where you currently stand and help you structure the preparation.

best,
Alessa :)

Yes you should, it will not be held against you