Section 194P: Any resident senior citizen (aged =>75 years) having pension income and interest income only. The bank in which you are receiving your pension income should be the same from which you receive interest income too.
In this scenario, one can choose not to file ITR by submitting Form 12BBA with the bank so that Bank can deduct applicable income tax via TDS, if any. One need to choose this option for each financial year separately.
Please note that you need to submit investment/expense proofs (if any) with the bank along with this Form 12BBA in order to avoid or reduce TDS.