Begin with one diagnostic mock to find your baseline score, then build a 3–5 month plan that covers quant and verbal fundamentals first, official practice questions next, and full-length mocks in the last 6–8 weeks. Use official GMAC material as your core resource, add one structured course or question bank, and study in fixed weekly slots instead of whenever time randomly allows.

Most test-takers need roughly 150–300 hours of focused study depending on their baseline, which for a working professional studying 10–12 hours a week means about 4–6 months. If you are targeting a 700+ score, plan toward the higher end of that range and keep buffer time for mocks and improvement attempts before your application deadlines.

Start with the latest official GMAC guides, including the main Official Guide and the sectional guides for Quant and Verbal, since they contain real retired questions. Add at most one supplementary book for your weakest area. A very common mistake is hoarding GMAT preparation books and finishing none — depth on official questions beats breadth across too many materials.

GMAT coaching is structured guidance — a fixed study plan, concept teaching, doubt-solving, and mock analysis — delivered through classroom batches or online mentorship. Self-study works well if you are disciplined and your basics are strong. Coaching makes sense when you have hit a score plateau, are reattempting the exam, or are managing a full-time job and cannot afford months of unstructured trial and error.

The right course depends on your weak areas, schedule, and budget rather than a single "best" brand. Look for official-style adaptive questions, detailed analytics and error tracking, sectional tests, and access to a mentor for doubt-solving. Trial your shortlist through free classes or sample questions before committing, and keep official GMAC material at the core of your plan.

GMAC offers free official practice exams on its website, and these are the most accurate free GMAT mock test options available because they use the real scoring algorithm. Several prep platforms also offer one free mock each. Use a free mock as your diagnostic starting point, but save most of your official exams for the final weeks when score prediction matters most.

Simulate real exam conditions: take it at the same time of day as your actual slot, follow the official section order, keep strict timing, and allow no phone, notes, or pauses. Take one mock a week in the final 6–8 weeks, and spend at least twice as long reviewing it — logging every error by concept and cause — as you spent taking it.

Official practice exams can be retaken using the reset option in your GMAC account, which restores the test so you can attempt it again. Keep in mind that a reset mock contains questions you have already seen, so the score usually runs higher than a fresh attempt. Use resets for pacing practice, and rely on a never-attempted official exam for a true score check.

Official GMAC practice tests are the gold standard because they are built from real questions and use the actual scoring algorithm, making them the most reliable predictor of your final score. Third-party mocks are useful for extra volume and sectional practice, but their scores can deviate from the real thing, so reserve official tests for your final rounds of assessment.

There are two main routes. The two-year MBA at IIMs admits primarily through CAT, which suits freshers and early-career candidates. Working professionals with relevant experience usually target the one-year full-time programmes, where admission runs on GMAT scores along with essays, recommendations, and interviews. Either way, a strong entrance score only gets you shortlisted — the interview and overall profile decide the final offer.

You take the GMAT, shortlist programmes that fit your experience and goals, and submit applications with essays, a resume, and recommendations. Shortlisted candidates face interviews, sometimes paired with a written ability test, and final selection weighs your complete profile — career progression, impact, and clarity of goals — not just the score. Applications open in rounds through the year, so submitting in an earlier round generally works in your favour.

Acceptance rates at the top Indian programmes are extremely low — commonly in single digits to the low teens — because lakhs of candidates compete for limited seats. This is why the score alone rarely decides outcomes; essays, interviews, and a differentiated profile carry heavy weight. Treat the acceptance rate as a signal to start profile building early, not as a reason to self-reject.

Ideally 10–12 months before your target intake. Budget the first 4–6 months for the GMAT, then move to shortlisting programmes, essays, recommendations, and interview preparation based on your score. Since every programme has different round deadlines, check the official timelines for each target school and aim for the earliest round in which you can submit a polished application, as earlier rounds typically offer more seats and scholarship flexibility.

The usual culprits are taking mocks without deep review, practising comfortable question types while avoiding weak areas, hidden concept gaps, and poor time management or question selection. Scores improve when you maintain an error log, identify the two or three concepts causing the most losses, fix them through targeted practice, and analyse every mock for patterns — a mock without analysis is just a score check, not preparation.

It depends on your experience and goal. A one-year MBA suits professionals with roughly four or more years of experience who want faster returns and a minimal career break, which is why programmes like ISB and the one-year IIM programmes are designed for them. A two-year MBA offers internships, a longer recruiting runway, and more room for a complete career switch, making it the better fit for early-career candidates or those changing functions entirely.