336.4. For the purposes of this chapter, where a written agreement or order of a competent tribunal made at any time in a taxation year provides that an amount paid before that time and in the year or the preceding taxation year is to be considered to have been paid and received thereunder, the following rules apply:(a) the amount is deemed to have been paid thereunder; and
(b) the agreement or order is deemed, except for the purpose of this section, to have been made on the day on which the first such amount was paid.
However, where the agreement or order is made after 30 April 1997 and varies a child support amount payable to the recipient from the last such amount paid to the recipient before 1 May 1997, each varied amount of child support paid under the agreement or order is deemed to have been payable under an agreement or order the commencement day of which is the day on which the first payment of the varied amount is required to be made.
1986, c. 15, s. 68; 1995, c. 49, s. 236; 1996, c. 39, s. 273; 1998, c. 16, s. 117.