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JoSAA 75% Criteria: Board Marks Rule for IIT and NIT (and the Top 20 Percentile Option)

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Official 2026 Rules

JoSAA 75% Criteria: Board Marks Rule for IIT and NIT (and the Top 20 Percentile Option)

By Team JEE Prep Master · Updated 29 October 2026 · ~7 min read

To get an IIT, NIT, IIIT or GFTI seat through JoSAA, you need 75% in Class 12 (65% for SC, ST and PwD) or a place in the top 20 percentile of your board. Either one is enough. Five subjects count, and the rule is checked when you accept a seat.

This guide explains which subjects count, how the top 20 percentile works, and what improvement exams can and can't fix, from the official JoSAA 2026 Business Rules.

75%
Class 12 aggregate (GEN, EWS, OBC-NCL)
65%
For SC, ST and PwD
Top 20
Percentile of your board: the other way in
5
Subjects counted

The 75% Rule, Exactly as JoSAA Writes It

To get a seat through JoSAA, you must pass Class 12 (or an equivalent exam) with at least five subjects and meet one of two conditions:

CategoryBoard marks needed (option 1)Or (option 2)
GEN, GEN-EWS, OBC-NCL75% aggregate in 5 subjectsTop 20 percentile of your board, in your category
SC, ST, PwD65% aggregate in 5 subjectsTop 20 percentile of your board, in your category

Source: JoSAA 2026 Business Rules (1 June 2026), Annexure 2(a) for IITs/IISc and Annexure 2(b) for NIT+.

You need only one of the two. A student with 72% can still be eligible if 72% puts them in the top 20 percentile of their board in their category.

Which Five Subjects Count

For IITs and IISc: Physics, Chemistry, Mathematics, one language (the higher one if you took two), and your best other subject.

For NIT+ B.Tech seats: Physics, Mathematics, one of Chemistry / Biology / Biotechnology / a technical vocational subject, one language, and your best other subject. You must also pass each of these subjects.

Marks not out of 100 are scaled to 100, so the total is out of 500. If your board gives only grades, get a certificate of equivalent marks from the board and submit it when you accept your seat.

The Top 20 Percentile Option

  • The cut-off is worked out category-wise from the marks of all successful candidates of your board in that year.
  • For PwD candidates, the cut-off is the lowest of the GEN, OBC-NCL, SC and ST cut-offs.
  • If your board doesn't publish its top 20 percentile cut-off, you need a certificate from the board (Annexure 11 format). Without it, the CBSE cut-off for your category is used.
  • All marks must be from a single board and a single year for this option.

Improvement Exams and the 75% Rule

The two options treat improvement exams differently (Annexure 2):

  • To reach 75% (or 65%): you can reappear in any number of subjects. For each subject, the higher of your two attempts counts.
  • To get into the top 20 percentile: you must reappear in all subjects, and that year's cut-off is used.
  • If you reappeared in all subjects for any reason, the better of the two performances counts.

If your board revises your result after you lock your choices (re-totalling, re-evaluation), and you now meet the rule, you must email the organising IIT with the revised certificate by the deadline (15 July in 2026). You are then considered in later rounds, but only if you had registered and filled choices on time even though you weren't eligible then (clause 72). So always register and fill choices, even while a re-evaluation is pending.

Which Class 12 Year Is Allowed

For NIT+ seats in JoSAA 2026, you must have taken Class 12 for the first time in 2024, 2025 or 2026. If you passed in a year where the 2026 rule wasn't met, your JEE Main rank alone won't get you an NIT seat.

Frequently Asked Questions

Is 75% compulsory for NIT?

Not exactly. You need either 75% in five subjects (65% for SC, ST and PwD) or to be in the top 20 percentile of your board in your category. Meeting either one is enough.

Is 75% compulsory for IIT?

The same rule applies: 75% (65% for SC, ST, PwD) or the top 20 percentile of your board, with Physics, Chemistry and Mathematics as compulsory subjects.

Which subjects count for the 75% criteria?

For IITs: Physics, Chemistry, Maths, one language and your best other subject. For NIT+ B.Tech: Physics, Maths, one of Chemistry/Biology/Biotechnology/technical vocational subject, one language and your best other subject.

Can an improvement exam help me meet the 75% rule?

Yes. You can reappear in any number of subjects, and the higher marks in each subject count. For the top 20 percentile option you must reappear in all subjects.

What is the 75% criteria for SC and ST?

65% aggregate in five subjects, or the top 20 percentile of your board in your category. The same 65% applies to PwD candidates.

My board does not publish the top 20 percentile. What now?

Get a certificate from your board in the JoSAA format. Without it, the CBSE cut-off for your category is used.

Related Guides

Sources: JoSAA 2026 Business Rules (1 June 2026), Annexure 2(a), Annexure 2(b), Annexure 4 and clause 72.