Hi bhaskar,
Regarding the authority on seeking reasons, you may refer to the SC decision in the case of Sun Engineering and in case you have already filed the return of income of the concerned client, you may attach a copy of the same in response to the notice saying that the same may be considered as return filed in response to such notice while also seeking a copy in writing of the reasons for reopening of assessment, which may subsequently be challenged on merits accordingly.
For a quick reference on the case laws, which in this section are many, you may refer to Master Guide to Income-tax or Direct Tax Manual and after getting to know the precise reasons for reopening of assessment, a suitable challenge to the same can be made.
Regards,
Ankur
Regarding the authority on seeking reasons, you may refer to the SC decision in the case of Sun Engineering and in case you have already filed the return of income of the concerned client, you may attach a copy of the same in response to the notice saying that the same may be considered as return filed in response to such notice while also seeking a copy in writing of the reasons for reopening of assessment, which may subsequently be challenged on merits accordingly.
For a quick reference on the case laws, which in this section are many, you may refer to Master Guide to Income-tax or Direct Tax Manual and after getting to know the precise reasons for reopening of assessment, a suitable challenge to the same can be made.
Regards,
Ankur