Section 21. Cancellation of assessment in certain cases and fresh assessment thereof

Where an assessee, or in case of a company the principal officer thereof, within one month from the service of a notice of demand issued as hereinafter provided satisfies the Agricultural Income-Tax Officer that he was prevented by sufficient cause from making the return required by section 19 or that he did not receive the notice issued under sub-section (2) of section 19 or sub-section (2) of section 20 or that he had not a reasonable opportunity to comply or was prevented by sufficient cause from complying with the terms of the last mentioned notices the Agricultural Income-Tax Officer shall cancel the assessment and proceed to make a fresh assessment in accordance with the provisions of section 20.