(1) Subject to subsection (2), in any case in which a wife is treated as living with her husband, income tax shall be assessed, charged and recovered, except as is otherwise provided by the Income Tax Acts, on the income of the husband and on the income of the wife as if they were not married.
(2) Where an election under section 1018 has effect in relation to a husband and wife for a year of assessment, this section shall not apply in relation to that husband and wife for that year of assessment.