Expenditure-Tax Act, 1987
10. Best judgment assessment
If-
(a) any person fails to make the return
required by any notice given under sub-section (2) of section 8 and has not
made a return or a revised return under sub-section (3) of that section, or
(b) any person having made a return fails to
comply with all the terms of a notice issued under sub-section (1) of section
9, or
(c) the 16[Assessing] Officer is
not satisfied with the correctness or the completeness of the accounts of the
assessee, the 16[Assessing] Officer, after taking into account all
the relevant material which he has gathered, shall, by an order in writing,
make the assessment of the chargeable expenditure to the best of his judgment
and determine the sum payable by the assessee or refundable to the assessee on
the basis of such assessment.