The eligibility criteria of UPSC CSE states that an aspirant of UPSC CSE examination must be of 21 years of age, on or before 1st August of the appearing year. Now as you wish to appear for the UPSC CSE, in that case you are turning 21 years old before 1st August, 2025, you are eligible for the examination of UPSC CSE 2025. You aren't eligible for the course of UPSC CSE 2024, then you are at the age of 20 years old before 1st August,2024.

For more information regarding UPSC Prpearation tips consider the link below:

https://competition.careers360.com/articles/how-prepare-for-upsc-ias

I hope this helps. Wish you a great day!

Hello Aspirant,
Yes you will be eligible for UPSC 2025 as per the current eligibility criteria because you will cross your 21 years on September 20, 2024 but the eligibility date is considered on August 1st of the examination year, therefore you are not eligible for UPSC 2024 but you are eligible for UPSC 2025 . 

The age limit for UPSC IAS exam is 21 year to 32 year with following age relaxation as per the reservation criteria of UPSC :-

>>>> OBC - 3 years
>>>> SC/ ST - 5 years
>>>> Defense Services Personnel, who got disabled during operations during hostilities with any foreign country or in a disturbed area and released as a consequence - 3 years
>>>> Ex-servicemen including Commissioned Officers (CO) and ECOs/ SSCOs who will render at least five years Military Service as of August 1, 2021, and have been released - 5 years
ECOs/SSCOs who have completed an initial period of assignment of five years of Military Service as of 1st August 2021 - 5 years
>>>> In the following cases: blindness and low vision, deaf and hard of hearing, locomotor disability including acid attack, cerebral palsy, leprosy cured, dwarfism, victims and muscular dystrophy, intellectual disability, autism, specific learning disability and mental illness - 10 years
>>>> Candidates ordinarily domiciled in the State of Jammu & Kashmir from January 1, 1981, to December 31, 1989. - 5 years
>>>> So as per the age criteria you are eligible for UPSC IAS exam 2025 because the candidate should have crossed age of minimum 21 years on the August 1st of examination year.

You can check out the detailed eligibility criteria for UPSC IAS from the link given below :-
https://competition.careers360.com/articles/upsc-ias-eligibility-criteria



I hope this information helps you.
Good Luck!!