Every year around August, the same conversation starts happening in our office.
Someone comes in with a GMAT score they’re not sure about. Usually something in the 630 to 670 range on the Focus Edition. They’ve read somewhere that the GMAT score for ISB averages around 670, so they’re either quietly relieved or quietly panicking, and they want someone to tell them which one is correct.
The honest answer is almost always: it depends on things you haven’t mentioned yet.
That’s an unsatisfying reply, so let me explain what those things are.
The short answer
ISB’s Class of 2026 had an average GMAT Focus score of 669, with the middle of the class spread roughly between 555 and 765. On the older GMAT scale that’s about 720. There is no official cutoff — ISB reviews applications holistically. A Focus score of 655 keeps you competitive, and 685 or above makes your score a genuine strength rather than something the rest of your application has to compensate for.
If your score is already in that range, the rest of this article matters more than the number does.
What the average actually tells you (and what it hides)
Averages are comforting and slightly misleading.
An average of 669 means roughly half the admitted class scored below 669. People forget this. Every year someone with a 640 assumes they’re out, and every year people with 640 get in — because ISB is not running a score leaderboard, it’s building a class.
The published range makes this clearer. The Class of 2026 stretched from around 555 to 765. That’s an enormous spread. The person at 555 got in for reasons that had nothing to do with their GMAT, and the person at 765 was probably not admitted because of it either.
If you want to see what your own number means in percentile terms, our GMAT score chart breaks it down — worth a look before you decide whether to retake.
Here’s what I’d actually take from the data:
Below 620: your score is working against you. It’s fixable, but it needs addressing.
620 to 655: you’re in the conversation, and everything else in your application has to be strong.
655 to 685: competitive. Your score won’t be the reason you’re rejected.
685 and above: your score is an asset. Spend your remaining energy on the essays.
The part nobody tells engineers
Fifty-four percent of ISB’s Class of 2026 came from engineering backgrounds.
Read that again if you’re an engineer, because it changes your maths considerably.
You are not competing against the whole applicant pool. You’re competing against a very large group of people with a similar degree, similar employers, and often a similar story. Within that group, a 669 is unremarkable. It’s the median of a crowd you’re trying to stand out from.
This is the single most common thing I have to explain to students, and it is rarely welcome news. An IT services engineer with four years’ experience and a 670 is a perfectly good candidate in isolation, and an entirely ordinary one in context.
If that’s you, two things follow.
One: aim higher on the GMAT than the average. Not because ISB demands it, but because your pool does. A 700-plus Focus score does more work for an engineer than it does for, say, a lawyer or a doctor, where the applicant pool is thin and the admissions committee is actively looking for variety.
Two: your differentiation has to come from somewhere else. What have you actually built, led, or fixed? Vague “team lead” descriptions won’t carry an application. If you’re pushing for a serious score improvement alongside a full-time job, GMAT coaching in Mumbai with a fixed weekend batch tends to work better than promising yourself you’ll study after work — mostly because it removes the daily decision.
The flip side: if you’re from commerce, law, medicine, defence, or the arts, you have more room. The class was 21% commerce and finance, 9% business, and 16% everything else. Those are smaller pools, and ISB visibly wants them filled.
Work experience matters more than most applicants think
Average work experience in the Class of 2026 was just over four years. The minimum is two years as of March 31 of the intake year. The range went up to seventeen.
Two years is genuinely the floor, not a suggestion. Applying at exactly two years with an average score and a standard job is a hard sell, and I’d usually suggest waiting a year and strengthening the rest of the application unless there’s a good reason not to.
Between three and six years is the sweet spot. You’ve done enough to have a story, and you’re not so senior that a one-year MBA becomes an odd fit.
The useful thing about that four-year average: your GMAT score is valid for five years. So if you’re at two years of experience now, take the GMAT while you’re still in study mode, then apply when your work profile has caught up. I’ve seen people do this deliberately and it works well. Preparing at 24 is considerably easier than preparing at 28 with a mortgage.
When to retake, and when to stop
This is where people waste the most time.
Retake if: you scored well below your mock average, something went wrong on the day, or you sat the exam without proper preparation and know you left marks on the table. Also retake if you’re an engineer sitting at 640–660 and Round 1 hasn’t closed — that gap is usually closeable.
Don’t retake if: you’ve already taken it twice, your score sits within about 20 points of your genuine ceiling, and your essays haven’t been written yet. At that point the score is not your bottleneck. Your application is.
The diagnostic I trust: sit two full-length mock tests under real conditions, a week apart. If both land meaningfully above your official score, retake — you underperformed. If both land at or below it, your score is an accurate reflection of where you currently are, and a retake without changing your preparation will produce the same result.
That second scenario is common and worth being blunt about. Repeating the same preparation and expecting a different score is the most expensive mistake in GMAT prep. If you need a genuine jump rather than a small correction, one-to-one GMAT tutoring is usually the honest answer, because the problem is almost always specific — a section, a question type, a timing habit — and group classes move at the pace of the room.
Where applicants actually lose points
After the score, in rough order of how often I see it go wrong:
Applying in Round 3. ISB runs three rounds — mid-September, early December, late February. By Round 3 most seats are gone and you’re competing for what remains. If you have a choice, Round 1 or Round 2. A slightly lower score in Round 1 often beats a slightly higher score in Round 3.
Essays written in a weekend. ISB’s essays ask why you, why now, why an MBA. Generic answers are visible from a distance. The strongest applications I’ve seen were rewritten four or five times over a month.
Recommenders chosen by seniority. A detailed letter from your direct manager who actually watched you work beats a vague one from a VP who had to be reminded who you are.
Treating the interview as a formality. It isn’t. People with strong profiles get rejected here regularly, usually because they can’t explain their own career decisions without sounding rehearsed.
What preparation realistically looks like
If you’re targeting 685-plus from a standing start, plan on three to five months of consistent work. Not heroic weekends — consistent.
For most working professionals that’s around 10 to 12 hours a week: an hour or so on weekday evenings, and one longer block at the weekend for a full-length mock. It’s less than people fear, but it has to actually happen every week, which is the hard part.
If you’re outside Mumbai, or your job travel makes fixed classes impossible, our live online GMAT classes run the same syllabus with the same faculty as the classroom batches. The sessions are live rather than recorded, which matters more than it sounds — being expected somewhere at a specific time is usually what keeps preparation on track.
For revision, and for the topics you keep quietly avoiding, the GMAT video lectures are useful precisely because you can rewatch the same explanation three times without anyone noticing.
One thing worth knowing about the Focus Edition if you last looked at the GMAT a few years ago: Sentence Correction is gone. Verbal is now Reading Comprehension and Critical Reasoning only. Geometry has been removed from Quant, and Data Sufficiency has moved into a separate Data Insights section. If you’re using old study material, some of it is now teaching you things the exam no longer tests.
So — what GMAT score for ISB do you actually need?
If you want one number: 685 on the GMAT Focus Edition puts you in a comfortable position for ISB.
But the more useful version is this. Work out which applicant pool you’re actually in. If it’s the crowded one — engineering, IT services, four years’ experience, no unusual angle — treat 685 as your floor rather than your target. If you’re bringing something ISB sees less often, a score in the mid-660s with a genuinely distinctive profile has worked many times over.
And if your score is already competitive and you’re still reading articles like this one, that’s usually a sign the score isn’t what’s worrying you. It’s the application. That’s the harder problem, and it’s the one worth your remaining months.
If ISB isn’t your only target, incidentally, it’s worth deciding early whether you’re also sitting the CAT for the IIMs — that’s a different exam, a different timeline, and CAT coaching rather than GMAT preparation. Trying to decide in March, halfway through, is how people end up doing neither well.
If you want a second opinion
We’ve worked with a lot of ISB applicants over the years, including plenty who were convinced their score was the problem when it wasn’t.
If you’d like to talk it through with us, bring three things: your current or expected GMAT score, your years and type of work experience, and which round you’re aiming at. Half an hour is usually enough to tell you whether to retake, whether to apply this cycle or next, and where your application is actually weak.
There’s no charge for that conversation and you don’t have to enrol in anything. We’d rather tell someone honestly that they should wait a year than take their money for coaching they don’t need.
If you’ve already decided to prepare properly, our classroom batches run across Charni Road, Andheri and Ghatkopar.
Book a free counselling session →
Frequently asked questions
What is the minimum GMAT score for ISB?
There isn’t an official minimum. ISB assesses applications holistically, and the admitted range for the Class of 2026 ran from roughly 555 to 765 on the Focus Edition. In practice, below 620 your score starts working against you and the rest of your application has to be exceptional. There is no published GMAT score for ISB that guarantees admission or rules you out.
Is a 650 GMAT enough for ISB?
Possibly, depending on everything else. A 650 with an unusual background, strong work progression and well-written essays has a real chance. A 650 from an IT services engineer with four years’ experience and generic essays is a much harder case — not because 650 is a bad score, but because that applicant pool is enormous.
What is ISB’s average GMAT score?
669 on the GMAT Focus Edition for the Class of 2026, which is roughly equivalent to 720 on the older GMAT scale. The average GRE score was 327.
Does ISB accept the GRE?
Yes. ISB accepts both, and the average GRE for the recent class was 327. Take whichever you’ll score better on — there’s no evidence ISB prefers one, though the GMAT remains more familiar to most Indian applicants.
How much work experience does ISB require?
A minimum of two years of full-time experience as of March 31 of the intake year. The recent class averaged just over four years, with a range extending to seventeen.
Can I apply to ISB as a fresher?
No. The two-year minimum is a hard requirement for the PGP. ISB runs a separate Young Leaders Programme for students who apply during their final year of undergraduate study and then join after completing their work experience — worth looking at if you’re still studying.
How many attempts do I get at the GMAT?
Five in any rolling twelve-month period, and eight in a lifetime. ISB sees your reported score; multiple attempts are common and not held against you.
When are the ISB application deadlines?
Three rounds, typically mid-September, early December and late February. Confirm exact dates on the ISB website each year, as they shift slightly. Apply in Round 1 or 2 if you can.
How long should I prepare for the GMAT?
Three to five months of consistent work for most people targeting 685-plus. Around 10 to 12 hours a week. Someone starting from a strong quant base may need less; someone returning to study after several years usually needs more.
Is ISB worth it compared to an IIM?
Different products. ISB is a one-year programme for people with work experience, and your cohort will be mid-career. The IIMs’ flagship two-year MBA suits people earlier in their careers and includes a summer internship, which is a genuine advantage if you’re changing industry. Neither is better — they suit different stages.
