Key Takeaways
- CAT 2026 is on 29 November 2026 and results are likely in the first week of January 2027, so preparation that starts right after the exam has several weeks before the shortlists arrive
- In the CAT 2025 cycle the personal interview carried 35% to 50% of the final score at six IIMs, so it deserves planned time
- Your time should shift from reading and self-analysis in the early weeks to speaking practice in the final weeks
- With only two or three weeks left, spend the time on your own story and on speaking practice
- AI mock interview tools are available at any hour, which helps when friends and mentors are not free
Your CAT 2026 score is likely to arrive in the first week of January 2027. One question keeps coming up before that: when should interview preparation start? Advice online varies. Some say start right after CAT. Others say wait for call letters. Someone always mentions a friend who prepared for two weeks, and another who needed three months.
This guide gives a week-by-week plan, with the hours per day, and the reasoning for each phase.
GDPI is the common name for this stage. At the IIMs checked for this guide (Ahmedabad, Bangalore, Calcutta, Lucknow, Kozhikode and Indore) the second stage is a personal interview, and most of them add a written test. See the IIM interview timeline for dates.
What the Interview Weighs
These were the personal interview weights in the final score for the CAT 2025 cycle (batch 2026-28), taken from each IIM's admission policy.
| IIM | Personal interview weight in final score |
|---|---|
| Ahmedabad | 50% |
| Calcutta | 48% |
| Indore | 45% |
| Bangalore | 40% |
| Lucknow | 40% |
| Kozhikode | 35% |
The IIM interview guide lists the other components at each IIM.
When to Start
There is no single right time to start. The week before your interview is a poor time, because you would be trying to build material and practise in the same days.
Start immediately after CAT (December). You have about five weeks before results and more weeks before interviews. You can build material and practise without cramming.
Start when call letters arrive (mid-January). In the CAT 2025 cycle, IIM Ahmedabad published its shortlist on 9 January 2026 and IIM Lucknow on 10 January. Starting then leaves less time, and you may need to prepare for several IIMs at once.
Start after XAT (3 January 2027). This suits candidates who are writing XAT and want to keep their December for it. XAT registration closes on 6 December 2026, per the XAT website.
Starting earlier gives you more options. Starting later forces you to prioritise. Both can work if the plan is followed.
Phase 1: Foundation
When: The first two weeks after CAT
Daily time: 1.5 to 2 hours. For working professionals, 1 hour on weekdays and 2 to 3 hours on weekends.
This phase builds the material for later interviews. You are not practising full mock interviews yet.
Week 1: Self-Analysis and Profile Documentation
Write down every significant experience from your life, including the ones that are not impressive.
- Academic journey: Why did you choose your field? What did you enjoy? What disappointed you?
- Work experience: Write stories rather than job descriptions. Problems you solved, conflicts you handled, failures you learned from.
- Extracurriculars: Leadership roles, team experiences and skills built outside academics.
- Personal background: Family influences, hometown and cultural context.
The aim is to find what is authentically yours. Panels hear many rehearsed answers, and specific personal stories are easier to remember.
Week 2: Current Affairs Foundation
Daily routine (30 to 45 minutes):
Morning: Read one good newspaper or its digital edition, such as The Hindu BusinessLine, Mint or The Economic Times. Do not read everything. Focus on economy, business, technology, social issues and international affairs.
Evening: Spend 15 minutes connecting what you read to broader themes. How does this news affect business? What are the implications?
Phase 2: Skill Development
When: Weeks 3 and 4, mid to late December
Daily time: 2 to 2.5 hours
Now you start building the skills the interview tests.
Week 3: Communication and Articulation
Pick a topic from your current affairs reading. Set a timer for 2 minutes and speak about it aloud as if explaining to someone. Record yourself.
Listen to the recording and note filler words, incomplete sentences, circular arguments, pace and clarity. This feels awkward, and it shows you what the panel will hear.
Week 4: Mock Interview Introduction
Now practise with others. Your peers have their own schedules, while AI interview tools such as Rehearsal are available at 6 AM or midnight.
Use AI mocks for:
- High-volume practice without scheduling hassles
- Varied questions, so you do not memorise a script
- Feedback on filler words and answer length
- A low-stakes run before human mocks
This week, try 5 to 7 practice sessions. The goal is getting comfortable with the format.
Phase 3: Intensive Preparation
When: Weeks 5 and 6, late December to early January
Daily time: 2.5 to 3 hours
This is where preparation intensifies. You will soon have calls, or at least a good idea of where you will be interviewed.
For each B-school you expect a call from, prepare a specific answer to why this school. Panels hear "excellent faculty and placements" often, so your answer needs to name things you have checked: a programme feature, a course, a club, or a conversation with an alumnus.
Phase 4: Peak Preparation
When: Weeks 7 and 8, January, after XAT and before interviews begin
Daily time: 3 to 4 hours
This is the final push, and everything comes together.
Practice interview volume: Aim for a steady run of full practice interviews, each followed by a review of what you said. A target of 12 to 15 by the end of this phase gives you enough repetition to see patterns in your answers.
Knowledge and Practice Split
A split that many candidates find workable moves from reading to speaking as the weeks pass.
Weeks 1-2: Knowledge building 80%, practice 20%
Weeks 3-4: Knowledge building 50%, practice 50%
Weeks 5-6: Knowledge building 30%, practice 70%
Weeks 7-8: Knowledge building 20%, practice 80%
The common mistake is the reverse. Candidates think about practising in the early weeks and then rush to build knowledge in the final weeks.
If You Have Only Two or Three Weeks
Two or three weeks is short, and the core tasks still fit.
What to never sacrifice:
- Self-analysis, because you must know your own story
- Speaking practice, which cannot be replaced by reading
- School-specific preparation for why this MBA and why here
- Adequate sleep before interviews
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