(1) Where a taxpayer has duly furnished to the Commissioner a return of income, or of profits or gains of a capital nature, and no notice of assessment in respect thereof has been served within 12 months thereafter, the taxpayer may in writing by registered post request the Commissioner to make an assessment.
(2) If within 3 months after the receipt by the Commissioner of
the request a notice of assessment is not served upon the taxpayer, any
assessment issued thereafter in respect of that income, or of those profits or
gains, shall be deemed to be an amended assessment, and for the purpose of
determining whether such amended assessment may be made, the taxpayer shall be
deemed to have been served on the last day of the 3 months with a notice of
assessment in respect of which income tax was payable on that day.