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TNPSC Combined Technical Services Exam (CTSE): streams, dates and preparation
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The TNPSC Combined Technical Services Exam (CTSE) recruits to technical posts such as engineering, agriculture, pharmacy, statistics and law, and it is held in three streams: Interview Posts, Non-Interview Posts and Diploma/ITI Level. The qualification you need and the paper you sit depend on the post, so the first job is to find the stream that matches your degree, diploma or ITI certificate. We have verified the stream names, the 2026 planner dates and the 2025 Interview Posts exam format, but not the paper structure, so this page says to read the notification wherever the pattern matters.
The three CTSE streams
| Stream | Level | Interview stage | 2026 planner: notification and exam |
|---|---|---|---|
| Non-Interview Posts | Set post by post | No | Notification 20 May 2026, exam 3 August 2026, 7 exam days |
| Diploma/ITI Level | Diploma or ITI certificate | No | Notification 7 July 2026, exam 20 September 2026, 7 exam days |
| Interview Posts | Set post by post | Yes | Notification 31 August 2026, exam 14 November 2026, 4 exam days |
Qualifications across CTSE posts run from diploma and ITI up to degree and postgraduate level, and each post's requirement is set in that stream's notification, so a stream name tells you the level only for Diploma/ITI. The interview is what separates Interview Posts from the other two streams: it adds a stage after the written test, while the other streams have none.
How reliable are the planner dates?
The dates above come from TNPSC's Annual Planner for 2026, which was published on 3 December 2025. TNPSC calls it tentative and states that exams may be added or dropped, and that the syllabus and scheme can be modified until a notification is published. Treat these as a reference, not a calendar.
Planners do shift. In 2026, Group 4 was notified on the planner date of 6 October 2026, but its exam moved from the planner's 20 December 2026 to 10 January 2027. We haven't verified whether each CTSE notification has actually been issued, or on what exam date, so check the TNPSC notifications page before you plan around a date. The annual planner guide explains how to read it.
What we verified about the latest completed cycle
TNPSC's Press Release 18/2026, dated 12 February 2026, covers the CTSE Interview Posts exam. It shows that the 2025 exam was a computer-based test (CBT) held from 20 to 22 July 2025, for 415 vacancies. That is the only CTSE exam format we have verified, and it covers the Interview Posts stream only. Don't assume the other streams use the same mode.
What the notification will tell you
We haven't verified a CTSE paper structure, marks scheme, negative-marking rule or Tamil paper, and we won't quote one. Everything below is in the notification of each cycle, so read it in this order.
| Look for | Why it matters |
|---|---|
| Post codes in your stream and discipline | The same stream has different posts for civil, mechanical, agriculture and others |
| Qualification and age for your post | Both are set post by post and change each cycle |
| Scheme of examination | Number of papers, marks, qualifying marks, negative marking, mode (CBT or OMR) |
| Tamil requirement | Whether a Tamil paper or language condition applies to your post |
| Syllabus annexure | The technical subject syllabus and any general paper |
| Selection stages | Interview, certificate verification, shortlisting ratios |
| Vacancies and reservation | Each post and category has its own seats |
| Dates and fee | Last date, correction window, exam fee, fee concessions |
How to prepare before the notification
- Find your stream. Match your qualification to the Diploma/ITI stream or to the degree-level streams, then check the previous cycle's post list for your discipline.
- Use the previous notification as a draft. The last CTSE notification for your stream, such as the one behind the 2025 Interview Posts exam, shows the post list and the syllabus layout. Use it as a draft, and re-check each point against the new notification.
- Build the technical subject. For a technical post, your degree or diploma subject is where most of the work lies. Use your college textbooks and standard references, work from the syllabus topic list, and practise with past questions for your subject.
- Cover the general parts if they apply. Many TNPSC exams carry a Tamil requirement or a General Studies and aptitude paper, and the Group 4 and Group 2 schemes show how TNPSC sets them. If your notification includes one, the Tamil Eligibility Test guide and the Group 4 syllabus are good starting points.
- Practise on a screen. The 2025 Interview Posts exam was computer-based, so take part of your practice on a computer, with a timer.
- Register early. The One Time Registration (OTR) costs ₹150, is valid for five years, and needs Aadhaar linking. It is not an application, so you apply separately for each exam. Registering ahead means you can apply on the first day a notification opens. The OTR guide has the steps.
Choosing between streams
- If you hold a degree in a technical discipline, both Interview and Non-Interview streams may have posts for you. Compare the post lists, not the stream names.
- If you hold a diploma or an ITI certificate, the Diploma/ITI stream is built for you, and it has no interview.
- If you are weighing interview against written-only, the interview stage adds a personality test and a longer process, and the written-only streams rank on the exam alone. Pick on the posts you want, then prepare for that stream's stages.
If you have not decided between CTSE and the general recruitment exams, the groups explained page compares all of them, and the TNPSC guide is the starting point.
Preparing with PrepMatic
PrepMatic lists Combined Technical Services among the TNPSC exams it supports, and all practice is multiple-choice. Pick the exam in the app and look at which subjects the free assessment offers for your stream before relying on it for technical subjects. The assessment takes about 15 untimed questions and shows your weakest subjects. A study plan built from your exam date, daily hours and study days, and mocks focused on your weak subjects, can help you pace the work. It doesn't replace your technical textbooks or any non-objective stage a notification may include. You can read more about how to use mocks in the mock tests guide.
Frequently asked questions
What is the TNPSC Combined Technical Services Exam?
It is the exam through which TNPSC recruits to technical posts such as engineering, agriculture, pharmacy, statistics and law, in three streams: Interview Posts, Non-Interview Posts and Diploma/ITI Level.
Is there an interview in CTSE?
In the Interview Posts stream, yes. The Non-Interview Posts and Diploma/ITI Level streams have none. The stream is named in the notification.
What is the CTSE exam pattern?
It is set in each notification, and we haven't verified a pattern to state here. The one fact we can confirm is that the 2025 Interview Posts exam was a computer-based test held from 20 to 22 July 2025.
When is the CTSE exam in 2026?
TNPSC's 2026 Annual Planner shows tentative dates: Non-Interview Posts on 3 August, Diploma/ITI Level on 20 September and Interview Posts on 14 November 2026. The planner says these may change, so confirm each date in the notification.
Who can apply for CTSE?
It depends on the post. Qualifications range from diploma and ITI to degree and above, and age limits are set in each notification. Read the eligibility section for your post code.
Official sources
- TNPSC Annual Planner: the tentative 2026 programme of examinations.
- TNPSC Press Release 18/2026 (PDF): the CTSE Interview Posts exam of 2025.
- TNPSC notifications list: all notifications by exam.
- TNPSC official website: notices and updates.
Confirm every date, post and condition in the latest CTSE notification before you act on this page.
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