Unexplained expenditure deemed income, disallowing deduction when source is not satisfactorily explained by assessing officer.

Section 105 deems expenditure to be income when the assessee offers no explanation of its source or offers an explanation the Assessing Officer deems unsatisfactory; the deemed amount cannot be claimed as a deduction under the Act, the deeming may apply to part of an expenditure, and the provision contains no definitions, procedural safeguards, evidentiary standards, or appeal mechanisms.

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