Hello Harsha Vemula,

   INCOME Certificate has a validity of one financial year. 

Usually, a financial year starts from 1st of April to 31st March of next year. For eg; the Financial year of 2018-19 includes 1st April 2018 to 31st March 2019. Every year you have to produce a new income certificate from the concerned income certificate issuing authorities of your respective state.

According to the query, your in income certificate's validity is until 31st march of 2018. So, you can't use the same income certificate for the application of EAMCET 2019.

It's better to get a new income certificate from the concerned income certificate issuing authorities.

Hi Harsha, 

As per the rules, you should have fresh year income certificate that is after 1st Jan 2019. 2017 income certificate shoul not be valid.