Penalty for deemed income based solely on stamp-duty valuation...

Penalty for deemed income based solely on stamp-duty valuation is not justified where the taxpayer disclosed the registered deed, bank statements and payment details, and there is no finding that actual consideration exceeded the stated amount or that disclosures were false. Although statutory substitution of stamp-duty value can support an assessment addition, it does not alone establish concealment or inaccurate particulars, and the conditions for penalty are not met where the explanation is not found false. Acceptance of the addition does not admit that the stated consideration was untrue. Conversely, a notice expressly alleging concealment provides a specific charge when the penalty rests on that same allegation.