Rectification of mistake allows amendment of assessment within time, subject to notice, hearing, and refund adjustment.

Rectification of mistake permits the Assessing Officer to amend any order under this Chapter within one year from the end of the financial year in which the order was passed to correct mistakes apparent from the record. The Assessing Officer may amend suo motu or on notice from the assessee, but not in respect of matters considered and decided on appeal. Enhancing an assessment or reducing a refund requires prior notice and a reasonable opportunity of being heard, and all amendments must be in writing; refunds shall be made where assessment is reduced and sums specified where assessment is enhanced.

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