CS Professional Registration Last Date 2027: Cut-Offs, Fees and Your First Session

The CS Professional registration last date for the June 2027 exam is 30 November 2026, a Monday, for both groups. ICSI set it in its 2026 cut-off calendar; from 13 November 2026 it is 17 days away. For one group, the expected date is 31 January 2027. You can register only after passing both CS Executive groups under the same syllabus. The fee is Rs 20,000.

Your Executive result decides your first Professional session: on ICSI's 2026 calendar, the next session's cut-offs fall before each result.

TL;DR

• June 2027: both groups by 30 November 2026; one group by 31 January 2027 (expected).
• December 2027: both groups by 31 May 2027 and one group by 31 July 2027 (both expected).
• Fee: Rs 20,000 to register plus Rs 1,800 per group exam fee, so Rs 23,600 to your first exam with both groups.
• No late entry: ICSI says students cannot appear if they are not eligible by the cut-off date.

What is the CS Professional registration last date for June 2027?

30 November 2026 for both groups. ICSI printed it in its Cut-Off Dates for 2026, dated 27 July 2026, for the June 2027 exam.

ICSI had not published a 2027 calendar as on 13 November 2026. Its Student Services FAQ (Part 4, Q.4) gives the rule (30 November of the previous year or 31 January for June; 31 May or 31 July for December), and it matches all four 2026 dates, so I use it for 2027:

• June 2027: both groups 30 November 2026 (announced); one group 31 January 2027 (expected).
• December 2027: both groups 31 May 2027; one group 31 July 2027 (both expected).
• December 2026 (closed): 31 May and 31 July 2026.

Source: ICSI Cut-Off Dates for 2026 and Student Services FAQ; expected dates are a Gradehunt projection from the FAQ rule.

Does a cut-off move if it falls on a holiday?

No, the 2026 calendar says so in a note. 31 January 2027 is a Sunday and 31 July 2027 a Saturday, so I would not leave payment to the last evening.

Register by Monday 30 November 2026 to keep both groups open for June 2027. After a cut-off, no late fee gets you into that session.

I passed CS Executive. Which Professional session can I write?

That depends on which Executive result you passed in (our guide to checking your ICSI result covers the download). I set ICSI's result dates against the Professional cut-offs:

• June 2026 result, declared 25 August 2026: December 2026 had already closed. The earliest session is June 2027. Register by 30 November 2026 for both groups, 97 days after the result, or by 31 January 2027 (expected) for one group.
• December 2026 result, expected 25 February 2027 (not notified as on 13 November 2026): both June 2027 cut-offs fall before it. The earliest session is December 2027. Register by 31 May 2027 for both groups, 95 days after the result, or by 31 July 2027 for one group, 156 days after (all expected).

Method: result dates from ICSI's 2026 calendar, cut-offs from the FAQ rule, day counts by Gradehunt.

Why is there a gap after every result?

Each Executive result comes about three months after the next session's both-group cut-off: late August after 31 May, late February after 30 November. On the 2026 pattern, a pass in either result skips one Professional session. Still clearing Executive? See our CS Executive registration last date post.

Passed the two groups under different syllabi?

Then you are not eligible. ICSI's FAQ (Part 4, A.5) needs both Executive groups passed under the same syllabus, so Group 1 under the 2017 syllabus with Group 2 under 2022 does not count. From December 2025 every Professional student is on Syllabus 2022.

A June 2026 pass can start in June 2027 if registered by 30 November 2026. A December 2026 pass is expected to start in December 2027.

How much does CS Professional registration cost?

Rs 20,000, whether you plan one group or both. ICSI's Schedule of Fee (fee page updated 29 September 2026) lists these Professional heads:

• Education fee Rs 19,000 and pre-examination test fee Rs 1,000. The registration fee head is nil.
• Exam fee Rs 1,800 per group, paid with each exam form, with a Rs 250 late fee.

What does the first Professional exam cost in total?

• Both groups: Rs 23,600 (Rs 20,000 plus 2 x Rs 1,800). One group: Rs 21,800.
• Student with a disability, both groups: Rs 900. Your registration is nil and the exam fee has a 75% concession.
• Ward or widow of a martyr, or an Agniveer, both groups: about Rs 13,600, an estimate on the same basis. The 50% applies at registration, not to the exam fee.
• SC or ST, both groups: about Rs 11,800. This is an estimate, because ICSI does not say which heads the 50% covers; check the SMASH payment page.

Method: Gradehunt calculation from ICSI's Schedule of Fee (page updated 29 September 2026), without the optional Chartered Secretary journal.

Concessions that stop at Executive

The concessions for the North-East states, J&K and Ladakh, EWS students, Naxal-free districts and wards of serving personnel apply at Executive registration only.

Budget Rs 23,600 to sit both groups in your first Professional session.

How do you register for CS Professional on SMASH?

ICSI takes it online only. The steps from its FAQ (Part 4, A.3):

1. Log in to the SMASH portal.
2. Open Module, then Student Services, then Professional Registration Request.
3. Choose Elective 1 (one of six papers) and Elective 2 (one of five). ICSI marks this step mandatory.
4. Tick the CS Journal box only if you want the journal.
5. Click Proceed to payment, pay Rs 20,000 (less any concession) and save the receipt.
6. Download the Professional Registration Letter and your student ID card.

Choose electives now, change them later for Rs 250

• Group 1: ESG - Principles & Practice; Drafting, Pleadings and Appearances; Compliance Management, Audit & Due Diligence; Elective 1.
• Group 2: Strategic Management & Corporate Finance; Corporate Restructuring, Valuation and Insolvency; Elective 2.

You can switch later on SMASH under Change optional subject. Our post on how to choose your CS Professional electives covers how to pick from the eleven.

Register on SMASH, pick both electives on the same form and pay Rs 20,000.

What comes after registration before you can sit the exam?

You must pass ICSI's pre-exam test before you fill the exam form, and the form is filled every session. For June 2026, enrolment opened on 26 February; the pre-test closed on 24 March and the form on 25 March, or 8 and 9 April with the late fee. As on 13 November 2026, ICSI had not published the June 2027 dates.

Registration is valid for five years, then you renew through Registration De Novo.

Registration is a one-time step; the pre-exam test comes before the exam form, and the form comes every session.

Planning from registration to the first paper

I measure study time from the cut-off. For December 2026, the both-group date came 204 days before the first paper on 21 December and the one-group date 143 days before it. Missing 30 November costs you a group or a session.

If you passed in the June 2026 result, I would register before 30 November even if you plan to write one group. The fee is the same, and the second group stays open.

Register before 30 November 2026 and both groups stay open for June 2027.

Once you are registered, the Gradehunt CS Professional test series has Full Syllabus Mock Tests from Rs 199 per subject for the June 2027 attempt. You write by hand and upload, the copy is checked within 48 hours of upload, and your first paper is checked free.