By-law to phase out the application of Part IX
 8.3 (1) Subject to subsection (2), a municipality, other than a lower-tier municipality, may pass a by-law providing that the amount of taxes for municipal and school purposes for a taxation year under subsection 329 (1) of the Act for all property in the commercial classes, the industrial classes, the landfill property class or the multi-residential property class shall be calculated in accordance with subsections (4) and (5) of this section. O. Reg. 131/17, s. 6. (2) A municipality may only pass a by-law under subsection (1) if, in the previous taxation year, the taxes for each property in the commercial classes, the industrial classes, the landfill property class or the multi-residential property class, as the case may be, were equal to or greater than 50 per cent of the uncapped taxes for the property for the taxation year, as shown on the final tax bill for the taxation year for the property. In determining whether the taxes for each property in a class were equal to or greater than 50 per cent of its uncapped taxes, the municipality may opt to exclude properties in a subclass for vacant land. O. Reg. 131/17, s. 6. (3) A by-law under subsection (1) must be passed in the first taxation year to which it applies. O. Reg. 131/17, s. 6. (4) A by-law under subsection (1) does not apply to a property in a taxation year if the taxes for the property for the taxation year that would have been calculated for the property but for the application of the by-law (but including the application of any other option contained in a by-law passed by the municipality under Part IX of the Act) are equal to the uncapped taxes for the property for the taxation year. O. Reg. 131/17, s. 6. (5) If a by-law under subsection (1) applies to a property in a taxation year, the taxes for the property shall be calculated as follows: 1.  Subtract the taxes for the property as determined under paragraph 4 of subsection 329 (1) of the Act from the uncapped taxes for the property. 2.  Multiply the amount determined under paragraph 1 by, i.  one-quarter, if the by-law under subsection (1) did not apply to the property in the previous taxation year, ii.  one-third, if the by-law under subsection (1) applied to the property in the previous taxation year but not in the taxation year before that, or iii.  one-half, if the by-law under subsection (1) applied to the property in the previous two taxation years. 3.  The taxes for the property for the taxation year shall be equal to the sum of the amount determined under paragraph 2 and the taxes for the property as determined under paragraph 4 of subsection 329 (1) of the Act. O. Reg. 131/17, s. 6. (6) If a by-law made under subsection (1) applies in a municipality to a property in the commercial classes, the industrial classes, the landfill property class or the multi-residential property class for three consecutive taxation years, every property in that class or in those classes in the municipality, as applicable, is exempt from the application of Part IX of the Act for every subsequent taxation year. O. Reg. 131/17, s. 6. part iii    Adjustment to taxes — subsection 329 (1) of the Act