BITSAT Form: Dates, Steps & How to Apply

Every year, we see students treat the BITSAT form like a one-time task, fill it, forget it, and then get caught off guard by the second session registration window, the correction period, or the slot booking step that comes right after. BITSAT isn't a single-shot exam. It runs across two sessions, lets you count your better score, and even lets you pick your own exam date within a window, which makes the form process genuinely different from most other engineering entrance exams. Here's exactly how it works, what the 2026 cycle looked like, and what to expect for 2027.

Quick Answer

The BITSAT form for 2026 opened December 15, 2025, with Session 1 registration closing March 16 (later extended to March 19) and Session 2 registration running April 20 to May 2. For 2027, expect the form to open around mid-December 2026, following the same two-session structure.

What Makes This Application Process Different

A few structural facts worth understanding before you start:

1. BITSAT runs in two sessions, and you can register for Session 1 only, Session 2 only, or both together. If you apply for both, your better score across the two attempts counts toward admission.
2. You choose your own exam date and slot within the available window during a separate slot booking step after registration, a feature most other entrance exams don't offer.
3. Some fields become non-editable after submission, including name, date of birth, mobile number, email, gender, and test city preferences, so getting these right the first time matters more than it does on forms with a fuller correction window.
4. Students who retake all subjects in Class 12 are no longer eligible for BITSAT, a rule change that's tightened in recent cycles, so don't assume older eligibility information still applies.
5. The exam itself includes an optional bonus section, only accessible if you finish the core paper with time to spare, which is a structural quirk unique to BITSAT that your prep strategy should account for well before form-filling season arrives.

Our BITSAT form and BITSAT important dates pages track the live calendar each cycle, which matters given how many separate windows are involved in this one exam.

BITSAT 2026 Form Timeline (For Reference)

Here's exactly how the 2026 cycle played out, a useful benchmark for what 2027 will likely resemble:

Notice how many separate deadlines exist beyond the initial registration date. Missing the Session 2 window because you assumed one registration covered everything is a mistake we see repeat every cycle, and it's an entirely avoidable one if you're tracking the full calendar rather than just the headline registration date. Our BITSAT dates page keeps the full calendar in one place as it updates.

Step-by-Step: How to Fill It Out

1. Visit the official website, admissions.bits-pilani.ac.in , and register with a valid email ID and mobile number that you'll keep active throughout the admission process, since OTPs for validation go through both.
2. Note your system-generated Application Number (User ID) and password immediately after registration. You'll need this for every subsequent step, including Session 2 registration if you apply later.
3. Fill in personal, academic, and contact details carefully, since several of these fields can't be changed once submitted.
4. Select your test city preferences thoughtfully, since this is also among the non-editable fields.
5. Upload your photograph and signature in the specified format: photograph 50 to 100 KB in JPEG/JPG, signature 10 to 100 KB in JPEG/JPG.
6. Pay the application fee through net banking, debit card, or credit card, the only accepted modes.
7. Review the entire form on the preview screen before final submission, since the correction window later only covers limited fields, not the ones listed above.
8. Download and save your confirmation once payment is complete.
9. Complete slot booking separately once it opens, choosing your preferred exam date and time within the available window rather than assuming one is assigned to you automatically.

Our how to fill BITSAT application form page walks through each of these steps with more visual detail if you want a side-by-side reference.

Documents to Keep Ready Before You Start

Having everything scanned and correctly sized before registration opens saves you from a mid-session scramble:

1. A recent passport-size photograph, scanned to 50-100 KB in JPEG or JPG format.
2. A scanned signature, 10-100 KB in JPEG or JPG format.
3. Class 10 marksheet, for date of birth verification.
4. Class 12 marksheet or admit card, with academic details entered exactly as they appear.
5. A valid, actively-monitored email address and mobile number, since OTPs and all further communication, including admit card and slot booking notifications, route through both.
6. Category certificate, if applying under a reserved category, in the currently valid format.

Understanding Slot Booking: The Step After the Form

This is the part of the BITSAT process that trips up more students than the registration form itself, largely because it's easy to assume filling the form is the last thing you need to do.

1. Slot booking opens separately, usually a few weeks after registration closes, once BITS Pilani finalises exam centre capacity and available dates.
2. You choose from a range of dates and time slots within the exam window, rather than being assigned one automatically, which is unusual among major entrance exams.
3. Popular dates and slots fill up fast. Since booking is first-come, first-served among registered candidates, waiting too long after the window opens can leave you with a less convenient date or time than you'd have preferred.
4. Booking for Session 2 is a separate action entirely, even if you already booked a slot for Session 1, so don't assume your preferences carry over automatically.
5. Once booked, your slot is generally locked, so treat this step with the same care you gave the original form, since a rushed choice here is just as hard to undo as a rushed answer on the form itself.

Our BITSAT date selection and BITSAT slot booking date pages track this window specifically each cycle, since it's easy to lose track of if you're only watching the main registration deadline.

BITSAT Application Fee

Confirm the current fee before you start, since it increased by Rs 100 in the 2026 cycle:

If you initially registered for Session 1 only and decide to add Session 2 later, you'll pay the incremental difference rather than the full "both sessions" fee again, which is worth knowing if you're weighing whether to commit to both sessions upfront or decide after seeing your Session 1 result. Our BITSAT application fee page tracks the confirmed amount as soon as each new cycle's brochure is out.

Eligibility Criteria for BITSAT

Here's what you need to confirm before starting the form:

1. You should have passed or be appearing in Class 12 (10+2) in the current or previous year from a recognised board.
2. A minimum 75% aggregate in Physics, Chemistry, and Mathematics (or Biology) is required.
3. You need at least 60% in each of Physics, Chemistry, and Mathematics/Biology individually, not just in the combined aggregate.
4. English must be one of your Class 12 subjects.
5. There is no upper age limit.
6. Students retaking all subjects in Class 12 are not eligible, a rule that's been tightened in recent cycles, so don't rely on older information here.
7. Different eligibility conditions can apply if you're seeking admission under a specific quota or through a different pathway entirely, so treat this checklist as the general rule rather than an exhaustive list for every possible situation.

Our BITSAT eligibility criteria page covers state board variations and edge cases in more depth than a quick checklist can.

Common Mistakes That Cost Students at This Stage

A few patterns show up every cycle with students we mentor:

1. Treating Session 1 registration as covering everything. If you only registered for Session 1 and want to attempt Session 2 as well, you need to actively register again during the Session 2 window, it doesn't happen automatically.
2. Rushing through non-editable fields. Name, date of birth, mobile number, email, gender, and test city preferences can't be changed later, so a typo here isn't a quick fix.
3. Skipping the slot booking step entirely. Registration and slot booking are separate actions. Completing the form doesn't lock in your exam date, you still need to book your preferred slot once that window opens.
4. Assuming the correction window covers every mistake. It only allows edits to specific fields, and given how many fields are locked from the start, the actual scope of what you can fix later is narrower than students expect.
5. Missing the Session 2 window because of exam fatigue after Session 1. Students who've just finished Session 1 sometimes let the Session 2 registration deadline pass simply because their attention has moved elsewhere.
6. Booking a slot without checking travel logistics first. Choosing a convenient-looking date without confirming your exam centre's location and your travel plan for that day can create avoidable stress closer to the exam.
7. Not saving the application number somewhere accessible. Since you'll need it again for Session 2 registration, slot booking, and admit card download, losing track of it mid-cycle means contacting the helpdesk for something you could have avoided entirely by saving it in two places from the start.

What We Expect for BITSAT 2027

BITS Pilani hasn't released its 2027 notification yet, so treat the following as a pattern-based estimate:

1. Registration opening: likely mid-December 2026, based on the 2026 cycle's December 15 start.
2. Session 1 closing date: expected around mid-March 2027, with a possible short extension following recent patterns.
3. Session 1 exam: likely mid-April 2027.
4. Session 2 window: expected to open in late April 2027, with the exam itself in late May 2027.
5. Fee: likely another modest increase, given the Rs 100 rise seen in 2026, so budget with a small buffer rather than assuming last year's exact figure.
6. The bonus section and two-session structure are likely to continue, since BITS Pilani has kept this core exam design stable across recent cycles even as specific dates and fees have shifted year to year.

Our BITSAT registration date page will reflect the confirmed 2027 schedule the moment BITS Pilani's official notification is released.

Conclusion

This application isn't a single step, it's a sequence: registration, document upload, fee payment, slot booking, and potentially a second round of the same process if you're attempting both sessions. Fill it early, get the non-editable fields right the first time, and don't let Session 2 registration slip past you once Session 1 is behind you. For 2027, watch admissions.bits-pilani.ac.in directly once the notification is out rather than relying on a secondary source for anything time-sensitive.

Once your form is submitted, the real preparation work begins. At Phodu Club, our Ultimate BITSAT Crash Course covers full Physics, Chemistry, and Maths lectures alongside a dedicated English and Logical Reasoning course, 20 full-syllabus mock tests plus 8 memory-based previous year papers, chapter-wise tests, DPPs, mentorship from BITSians, and handwritten revision notes, with a 100% course fee refund if you score 300+ on BITSAT. If you've already covered your syllabus, our Ultimate BITSAT Test Series or the lighter Starter BITSAT Test Series give you structured mock practice without the full lecture load, and our Phodu BITSAT Question Bank offers handpicked chapter-wise questions with English and Logical Reasoning worksheets if you want targeted practice material alongside whichever main product you choose. We also offer a free BITSAT Open test, a free BITSAT Tracker to monitor your preparation, and a free BITSAT Predictor to help you gauge where you stand before results are even out.

Frequently Asked Questions

1) When did the BITSAT form open for 2026? 

It opened December 15, 2025, with Session 1 registration closing March 16, 2026, later extended to March 19.

2) Can I fill the BITSAT form for Session 2 only? 

Yes. If you missed Session 1 registration, you can still apply for Session 2 only during its separate registration window, which ran April 20 to May 2 in 2026 (extended to May 5).

3) Which fields can't be edited after submitting the BITSAT form? 

Name, date of birth, mobile number, email address, gender, and test city preferences are non-editable once submitted, so review these carefully before you finalise your application.

4) Do I need to book my exam slot separately after filling the BITSAT form? 

Yes. Registration and slot booking are two separate steps. Completing the form doesn't automatically assign your exam date, you need to book your preferred slot once that window opens.

5) What is the BITSAT application fee for 2026? 

Rs 3,600 for male candidates and Rs 3,100 for female and transgender candidates for Session 1 only (India/Nepal), rising to Rs 5,600 and Rs 4,600 respectively for both sessions.

6) Are students retaking Class 12 eligible for BITSAT? 

No, not if they're retaking all subjects. This eligibility rule has been tightened in recent cycles, so don't rely on older information if this applies to you.

7) When will the BITSAT form for 2027 be released? 

BITS Pilani hasn't announced 2027 dates yet. Based on the 2026 pattern, expect registration to open around mid-December 2026, with Session 1 exams likely in mid-April 2027.

8) Where can I find structured BITSAT prep after submitting my form? 

Phodu Club's Ultimate BITSAT Crash Course covers full syllabus lectures, 20 mock tests, English and Logical Reasoning prep, and mentorship from BITSians, with a 100% refund at a 300+ score. Our Test Series options and free tools like BITSAT Open and BITSAT Predictor are also worth checking.