CSAB Round 1 vs Round 2: Which Round Has Bigger Cutoff Drops?

Key Takeaway

One of the most common questions among JEE Main candidates is whether CSAB Round 2 offers significantly lower cutoffs than Round 1. While there is no universal rule that applies to every institute or branch, historical CSAB data shows that Round 2 generally records more relaxed closing ranks because additional seats become available due to non-reporting, withdrawals, and seat upgrades after Round 1. However, the magnitude of the cutoff drop depends on the institute, branch, category, and the number of vacant seats. 

Why Do Cutoffs Change Between Round 1 and Round 2?

After the Round 1 allotment, some candidates do not complete admission formalities, while others accept better offers through different counselling processes or withdraw their allotted seats. These vacant seats are added back into the system for Round 2, which can push the closing ranks further, especially in branches with lower demand. The final movement varies every year because it depends on the actual vacancy position published by CSAB. 

Round 1 vs Round 2 Comparison

Choosing between Round 1 and Round 2 should never be based only on assumptions. The OGcollege CSAB College Predictor compares your JEE Main rank with previous CSAB closing ranks to identify colleges where you have realistic admission chances in both rounds. You can also use the OGcollege CSAB Choice Filling Tool to arrange your preferences strategically based on historical cutoff movement instead of relying on guesswork.

Which Branches Usually See Bigger Cutoff Drops?

The largest cutoff movement is generally seen in Civil Engineering, Mechanical Engineering, Production Engineering, Metallurgical Engineering, Biotechnology, and other lower-demand branches. Circuital branches such as Computer Science, Information Technology, Artificial Intelligence, Electronics & Communication, and Electrical Engineering also witness movement, but it is usually much smaller because these branches remain in high demand throughout the counselling process. 

Do Top NITs Also Experience Round 2 Cutoff Drops?

Yes, but the movement is usually limited. Premier institutes like NIT Trichy, NIT Surathkal, NIT Warangal, NIT Allahabad, and NIT Calicut may see minor cutoff extensions in selected branches if candidates withdraw or upgrade. In contrast, newer NITs and several IIITs often experience more noticeable cutoff drops because of higher seat movement after Round 1. 

What Do Previous Years Suggest?

Looking at previous CSAB opening and closing ranks, Round 2 has frequently extended beyond Round 1 for many institutes and branches. However, the difference is not uniform. Some branches may see only a few hundred ranks of movement, while others extend by several thousand ranks depending on the final vacancy list. Therefore, candidates should treat previous-year trends as guidance rather than guaranteed outcomes. 

Should You Wait Only for Round 2?

Not necessarily. If a preferred college is available in Round 1, it is usually better to include it in your choice list rather than hoping for a larger cutoff drop later. Since CSAB allotment depends on seat availability and candidate preferences, there is no guarantee that a specific branch will become easier to secure in Round 2. A balanced choice list covering both ambitious and realistic options offers the best chance of success. 

If you're planning your CSAB strategy, you may also find CSAB 2026: How to Read Opening & Closing Ranks Before Filling Your Choices useful for understanding cutoff analysis. You can also read CSAB 2026 Vacant Seats After JoSAA Round 5: NITs & IIITs with the Highest Seat Availability to identify institutes that historically contribute the largest number of seats.

Talk to Seniors Before Finalizing Your Choices

Cutoff trends explain your admission chances, but they don't tell you whether a college is the right fit. Through the OGcollege Talk to Seniors feature, you can connect with students from NITs, IIITs, and GFTIs to learn about placements, coding culture, internships, hostel facilities, faculty support, and campus life before making your final CSAB decisions.

Conclusion

For most institutes, CSAB Round 2 tends to record larger cutoff drops than Round 1 because additional vacancies become available after the first allotment. However, the extent of the movement depends on the institute, branch, category, and yearly participation trends. Rather than waiting exclusively for Round 2, candidates should prepare a strong preference list from the beginning and use previous cutoff trends to make informed decisions.

Verified Sources

CSAB Official Website 

CSAB Previous Year Opening & Closing Ranks Archive 

Careers360 CSAB Opening & Closing Ranks Analysis