You should fill the year when you were first eligible to appear for JEE Advanced, not necessarily when you actually appeared.

For Example:

• If you passed your Class 12 in 2024 , then you were first eligible for JEE Advanced in 2024 , even if you didn’t appear for it that year.

• So, in the form, you should fill 2024 as your first attempt year , even if your first real attempt is in 2025 .

Why?

Because JEE Advanced eligibility is strictly tied to the year you passed Class 12 . Candidates are allowed to attempt JEE Advanced only in the year of passing 12th and the immediate next year .

So even if you're attempting JEE Advanced for the first time in 2025 , if you passed 12th in 2024, your first eligible year is 2024 , and that is what should be entered .