1. How the UPSC age rule actually works
The rule has three parts. First, the reckoning date: your age is measured on 1 August of the exam year, not on the Prelims date in May and not on the day you fill the form. Second, the minimum: you must have attained 21 years on that date, and no category gets a relaxation on the minimum. Third, the maximum: you must not have attained the upper age limit for your category on that date.
“Must not have attained” is the phrase that trips people up. It does not mean you may be 32 on 1 August for the General category — it means you must still be under 32. The notification makes this concrete with birth-date windows: for CSE 2026, a General candidate must have been born not earlier than 2 August 1994 and not later than 1 August 2005. For CSE 2027 the window shifts by one year, to 2 August 1995 through 1 August 2006. A candidate born on 2 August 1995 is 31 on 1 August 2027 and eligible; a candidate born one day earlier, on 1 August 1995, is 32 on that date and is not.
This calculator applies the same window logic for every category and exam year: the earliest eligible birth date is 2 August of (exam year minus upper limit), and the latest is 1 August of (exam year minus 21). If your date of birth falls inside that window, you meet the age condition for that year.
2. Category-wise limits, in plain words
General and EWS candidates share the same window: 21 to 32 years, with 6 attempts. EWS gives a 10% reservation in vacancies; it gives no extra age relaxation and no extra attempts.
OBC candidates in the non-creamy layer get 3 years of relaxation, taking the upper limit to 35, and 9 attempts. The creamy-layer distinction matters: an OBC candidate in the creamy layer is treated as General for age and attempts.
SC and ST candidates get 5 years of relaxation, taking the upper limit to 37, and there is no cap on the number of attempts — only the age limit binds. “Unlimited” does not mean forever: an SC candidate who is 37 on 1 August has no attempts left, even though the rule book never gave a number.
PwBD relaxation is 10 years and it stacks on top of the category relaxation: 42 for PwBD General and EWS, 45 for PwBD OBC, and 47 for PwBD SC and ST. Attempts for PwBD candidates are 9 for General, EWS and OBC, and unlimited for SC and ST. Eligible ex-servicemen get up to 5 further years, subject to the service conditions in the notification.
The old Jammu and Kashmir domicile concession, which appeared in earlier examination cycles, does not appear in the recent notices. If you were counting on it, check the notification of the year you apply for rather than an old guide.
3. Attempts: what counts and what does not
An attempt is counted when you appear for the Prelims — sitting even one paper counts. Filling the form, paying the fee, downloading the admit card, or staying home on exam day does not count. That distinction matters because a candidate who registered but never sat the exam has not used an attempt.
The attempt cap often binds before the age limit does. A General candidate who starts at 21 and attempts every year exhausts 6 attempts by age 26, with years of age eligibility still remaining but no attempts left. That is why this calculator shows attempts-left alongside eligibility: the binding constraint is whichever runs out first.
If you enter attempts already used, the calculator subtracts them from your category limit. For SC and ST candidates there is nothing to subtract — the answer is always the age window.
4. Worked examples, verified by the calculator
General candidate born 15 June 2003, checking CSE 2027: age on 1 August 2027 is 24 years, 1 month and 17 days. Eligible, with 6 attempts, and eligible years 2024 to 2034. With 2 attempts already used, 4 remain.
General candidate born 1 August 1995, checking CSE 2027: not eligible — one day too old. The CSE 2027 General window starts at 2 August 1995, and this candidate turned 32 on 1 August 2027 itself. Their last eligible year was 2026.
PwBD-OBC candidate born 2 August 1982, checking CSE 2027: the PwBD-OBC upper limit is 45, so the window starts at 2 August 1982 exactly. They are 44 years, 11 months and 30 days on 1 August 2027, eligible, with 9 attempts. The same birth date without the PwBD relaxation would be far over the plain OBC limit of 35 — which shows why the category and PwBD boxes must both be set correctly.
SC candidate born 2 August 1990, checking CSE 2027: the SC upper limit is 37, so the window starts at 2 August 1990 exactly. Eligible, with unlimited attempts — and 2027 is also their last eligible year, since they turn 37 on 2 August 2027, one day after the reckoning date.
5. What to enter, and what you get back
Enter your date of birth as on your Class 10 certificate, your category, and the exam year you want to check. The exam year defaults to 2027, the next cycle after CSE 2026. Tick the PwBD box if you hold a benchmark disability certificate, and the ex-serviceman box if you qualify under the notification’s service conditions. Attempts already used is optional — leave it blank if you have never appeared.
You get back a verdict for that exam year, your exact age on 1 August of that year, your upper age limit, the full date-of-birth window for that year and category, attempts allowed and left, and your first and last eligible years. The first and last years are the whole story for planning: they tell you how many cycles you can still appear in, before attempts are even considered.
6. Proof of age: the Class 10 certificate rule
UPSC takes your date of birth only from your Class 10 (matriculation) or equivalent certificate. Once entered in an application, it is not changed later. If the date on your other documents differs from your Class 10 certificate, the certificate governs — sort out any mismatch long before the application window, not during it.
Category and PwBD claims need their own certificates too: a non-creamy-layer certificate for OBC, a caste certificate for SC and ST, and a benchmark disability certificate for PwBD. The calculator checks arithmetic, not documents; the certificates decide whether the category you selected is one you can actually claim.
7. Beyond age: qualification and nationality in brief
Age is only one of three eligibility conditions. You must also hold a bachelor’s degree from a recognised university — final-year students may apply provisionally, subject to producing proof of passing before the interview stage. And for the IAS, IFS and IPS you must be a citizen of India; for other services the notification admits a wider set including subjects of Nepal and Bhutan and certain refugees and persons of Indian origin, subject to an eligibility certificate.
This tool checks the age condition only. Passing it does not mean you meet the other two, and failing it cannot be fixed by meeting them.
8. Common mistakes that cost a year or an attempt
Counting age on the Prelims date instead of 1 August. A candidate who turns 21 in September is not eligible for that year’s exam, even though they will be 21 by the Prelims in May — they are not 21 on 1 August of the previous year either, so the confusion usually runs the other way: candidates who turn 32 between 1 August and the Prelims are still eligible for that year, because 1 August is the only date that counts.
Reading “32 years” as “32 completed years allowed”. As the birth windows show, 32 on 1 August is already too old for General. If your calculation says you are “just 32”, check the exact date — one day decides it.
Claiming OBC relaxation while in the creamy layer, or claiming PwBD relaxation without a benchmark disability certificate. Both fail at document verification, after the exam.
Counting a registered-but-not-appeared year as an attempt, and so believing attempts are exhausted when they are not — or the reverse, forgetting a year you did sit one paper in.
Trusting an old guide’s Jammu and Kashmir concession, or an old notification’s dates. The notification of the year you apply for is the only authoritative document; this calculator’s rules follow the CSE 2026 notification and the published 2027 calendar, and you should re-check them when the 2027 notification releases.
10. Frequently Asked Questions
What is the minimum age for UPSC CSE?
21 years on 1 August of the exam year, for every category. There is no relaxation on the minimum age.
What is the maximum age for a General candidate?
32 years, in the notification’s sense: you must not have attained 32 years on 1 August of the exam year. For CSE 2027 that means being born between 2 August 1995 and 1 August 2006.
Is my age counted on the exam date or on 1 August?
On 1 August of the exam year. The Prelims date in May and the application date do not matter for the age calculation.
What is the age limit for OBC candidates?
35 years, a 3-year relaxation over General, with 9 attempts. It applies to OBC candidates in the non-creamy layer; creamy-layer candidates are treated as General.
What is the age limit for SC and ST candidates?
37 years, a 5-year relaxation, with no cap on the number of attempts. Only the age limit binds.
What is the age limit for PwBD candidates?
The 10-year PwBD relaxation stacks on the category limit: 42 years for PwBD General and EWS, 45 for PwBD OBC, and 47 for PwBD SC and ST. Attempts are 9 for General, EWS and OBC, and unlimited for SC and ST.
Do ex-servicemen get an age relaxation?
Eligible ex-servicemen get up to 5 years of relaxation, subject to the service conditions in the notification. Attempts remain as per the base category.
How do I know how many attempts I have left?
Subtract the Prelims appearances you have already made from your category limit: 6 for General and EWS, 9 for OBC and for PwBD General, EWS and OBC, and unlimited for SC and ST. Enter attempts used in the calculator and it does the subtraction.
Does the old Jammu and Kashmir domicile relaxation still exist?
It appeared in earlier examination cycles but does not appear in the recent notices, including CSE 2026. Check the notification of the year you apply for rather than relying on it.
What if my date of birth is 29 February?
This calculator counts your birthday as 28 February in non-leap years, the common convention. UPSC itself uses the date on your Class 10 certificate, so the certificate date is what matters.
Does this calculator store my date of birth or category?
No. It runs entirely in your browser, and nothing you enter is sent to a server or stored.
11. Methodology & Data Integrity
Rules: the age limits, relaxations and attempt counts follow the UPSC Civil Services Examination 2026 notification (upsc.gov.in), cross-checked against the published UPSC annual calendar for the 2027 cycle (notification in January 2027, Prelims in May 2027). Birth-date windows in the content are the notification’s own windows for CSE 2026, shifted by one year for CSE 2027 on the same rule.
Arithmetic: all dates are handled in UTC to avoid timezone shifts. Age on 1 August is completed years, then whole months, then days, with a 29 February birthday counted on 28 February in non-leap years. Eligibility is the window test: date of birth between 2 August of (exam year minus upper limit) and 1 August of (exam year minus 21), inclusive. First and last eligible years are derived from the same window, and every worked example on this page was verified by running the page’s own engine against those dates.
Limits of this tool: it checks the age condition only. It does not verify your degree, nationality, category certificate, disability certificate, or service record, and it cannot reflect a change the next notification introduces. Before applying, verify your position against the official notification of the year you apply for.
