In the formula in the first paragraph,(a) A is the percentage specified in paragraph a of section 750 that is applicable for the year;
(b) B is the amount determined under the third paragraph; and
(c) C is the amount by which the individual’s eligible work income for the year exceeds the reduction threshold applicable for the year.
The amount to which subparagraph b of the second paragraph refers is(a) where the individual is 66 years of age or over at the end of the year or, if the individual dies in the year, on the date of the individual’s death, the lesser of $11,000 and the amount by which the individual’s eligible work income for the year that is attributable to the year exceeds $5,000;
(b) where the individual is 65 years of age at the end of the year or, if the individual dies in the year, on the date of the individual’s death, the lesser of $11,000 and the aggregate ofi. the lesser of $10,000 and the amount by which the individual’s eligible work income for the year that is attributable to the period in the year throughout which the individual is 64 years of age exceeds $5,000, and
ii. the amount by which the individual’s eligible work income for the year that is attributable to the period in the year throughout which the individual is 65 years of age exceeds the amount by which $5,000 exceeds the individual’s eligible work income for the year that is attributable to the period in the year throughout which the individual is 64 years of age;
(c) where the individual is 61 to 64 years of age at the end of the year or, if the individual dies in the year, on the date of the individual’s death, the lesser of $10,000 and the amount by which the individual’s eligible work income for the year that is attributable to the year exceeds $5,000; or
(d) where the individual is 60 years of age at the end of the year or, if the individual dies in the year, on the date of the individual’s death, the lesser of $10,000 and the amount by which the individual’s eligible work income for the year that is attributable to the period in the year throughout which the individual is 60 years of age exceeds $5,000.
The amount that an individual born before 1 January 1951 may deduct under this section from the individual’s tax otherwise payable under this Part for a particular taxation year cannot be less than the amount the individual could so deduct for the particular year if subparagraphs b and c of the second paragraph were read as follows:“(b) B is the lesser of $4,000 and the amount by which the individual’s eligible work income for the particular year that is attributable to the year exceeds $5,000; and
“(c) C is an amount equal to zero.