MBA internship deadlines can vary materially by firm, office, school and recruiting channel, so the current campus calendar is the source of truth.

Some firms open applications early in the fall while others recruit later. Target schools may also have coordinated resume drops or interview periods that differ from public postings.

Do not plan from last year's Reddit dates alone. Use your MBA career portal, consulting club calendar and the firm's current job posting, then confirm any office-specific differences with recruiting.

Work backward from the earliest relevant deadline. Your resume, office preference, networking and basic case preparation should be in reasonable shape before the application closes, not started after it.

Our school deadlines were different from the public website, so career services was the most useful source.

I'd build around the earliest firm on your list because the recruiting calendar compresses quickly.