CAT eligibility and the IIM selection process

Many candidates spend a year preparing for CAT and ten minutes understanding what happens after it. That is backwards. CAT is only the first gate. Each IIM then runs its own shortlisting, its own WAT and interview, and its own final merit list, with its own weights for academics, work experience and diversity.

Knowing the process early changes how you prepare. It tells you what percentile you realistically need, which institutes suit your profile, and why the interview deserves attention months before the result.

Who can take CAT

The eligibility rules are short.

• A bachelor's degree with at least 50% marks or equivalent CGPA. For SC, ST and PwBD candidates the minimum is 45%.
• The degree must be from a recognised university or an institution with equivalent status.
• Professional qualifications such as CA, CS and CMA (ICWA) are also accepted, with the same percentage rules.
• Final-year students and candidates awaiting results can apply. If selected, they join provisionally and must produce proof of completing the degree with the required percentage by a date the IIM sets.
• There is no age limit and no limit on the number of attempts.

How the percentage is worked out

The bulletin follows the practice of your university. If your university awards grades or CGPA, its own conversion formula to percentage is used. If the university has no such formula, the usual rule is CGPA divided by the maximum CGPA, multiplied by 100.

Worked example: a candidate has a CGPA of 6.8 on a 10-point scale, and their university has no conversion formula. The equivalent is 6.8 ÷ 10 × 100 = 68%, comfortably above 50%. If their university's own formula gives a different figure, that figure applies.

Reservation

As central institutions, the IIMs follow the Government of India's reservation policy. Seats are reserved for SC, ST, OBC (non-creamy layer), EWS and PwBD candidates. The category you claim must be supported by a valid certificate in the format and time window the bulletin specifies. Shortlisting cut-offs are usually lower for reserved categories, and each IIM publishes them in its admission policy.

The selection process, step by step

CAT scores go out around the turn of the year. From there, each IIM runs its own process.

1. Shortlisting. The IIM applies minimum overall and sectional percentiles, then ranks eligible candidates on a composite that usually combines CAT with academics, work experience and diversity factors.
2. The second round. Shortlisted candidates face a Written Ability Test (WAT) and a Personal Interview (PI). Some institutes use a group discussion or other formats instead of, or alongside, the WAT.
3. Final selection. A new composite is calculated, usually combining CAT, WAT, PI, academics, work experience and diversity. Offers go out in lists, and waitlists move as candidates choose between institutes.

Several of the newer IIMs have run a joint second round known as the Common Admission Process (CAP), while the older IIMs usually conduct their own. Which IIMs take part in CAP changes over time.

What goes into the composite score

The components are broadly similar across IIMs, even though the weights are not.

Our guide to how IIMs shortlist works through a made-up composite score so you can see how the pieces add up.

Why the percentile alone is not enough

Two candidates with the same CAT percentile can get very different calls. Suppose candidate A has strong Class 10, 12 and graduation marks and two years of work experience, while candidate B has average academics and no work experience. At IIMs that give academics real weight, A may receive calls that B misses, even with an identical percentile.

This cuts both ways. A candidate with modest school marks is not shut out, but they usually need a higher CAT percentile to compensate. That is why shortlists often surprise people, and why the smart move is to read the policies before setting a target, not after the result.

Eligibility versus competitiveness

A realistic approach

• Read the admission policies of the institutes you want, early in your preparation.
• Estimate your profile score honestly from your marks and experience.
• Set a CAT target that makes you competitive for that list, with sectional targets too.
• Start WAT and interview preparation alongside CAT: read widely, write short essays, and be ready to explain your academic and career choices.
• Apply to a balanced set of institutes, including colleges beyond the IIMs.

Check yourself

1. A candidate has 48% in graduation and belongs to the SC category. Are they eligible?
2. A candidate's university gives CGPA 7.2 on 10 and publishes no conversion formula. What percentage is used?
3. Can a candidate who is 32 and has taken CAT three times apply again?
4. Do all IIMs use the same weights for work experience?

Answers:

1. Yes. The minimum for SC, ST and PwBD candidates is 45%.
2. 7.2 ÷ 10 × 100 = 72%.
3. Yes. There is no age limit and no limit on attempts.
4. No. Each IIM sets its own weights and ranges, and they change between years.

What to do next

• Confirm your eligibility against the current bulletin, especially if you are in your final year.
• Keep your mark sheets and category certificates ready in the required format.
• Read two or three IIM admission policies and note their cut-offs and weights.
• Start a notebook of interview material: your academic choices, work, interests and reasons for an MBA.