Subrata ji
I tax is Public Authority under Central Govt. so
RTI fee Rs. 10 (D.D./B.C./IPO) in favour of 'Accounts officer '
You can use the Post Office route to file a
RTI.
For details please see the link/s given below:
How to submit a
RTI application:
How to submit a RTI Application - RTI Guide
AND
Please see guide segment
RTI Guide it has a lot of information about drafting a
RTI application, fees, mode of payment, how to submit,how to locate
PIO etc.
Your assessing officer (ITO or AC) of your ward/circle is the CPIO. This is the same assessing officer to whom you submitted your IT return.
Possibly this info will be of good help to you
regards