Hi,

Yes, you can make income certificate for csir net jrf from tehsildar.

The income certificate can be made by following authority-

1) District Magistrate/Additional District Magistrate/ Collector/ Deputy Commissioner/Additional' Deputy Commissioner/ 1st Class Stipendary Magistrate/ Sub-DivisionalMagistrate/ Taluka Magistrate! Executive Magistrate/ Extra Assistant commissioner

(ii) Chief Presidency Magistrate/ Additional Chief Presidency Magistrate/ Presidency Magistrate

(iii) Revenue Officer not below the rank of Tehsildar and

(iv) Sub-Divisional Officer or the area where the candidate and/or his family normally resides

Hope this helps.