Law360 Canada ( September 1, 2026, 9:51 AM EDT) -- Appeal by appellant from decision denying retroactive child support. The chambers judge found there were two material changes in circumstances warranting an increase in ongoing child support but concluded that a retroactive child support order was not warranted based on her application of the factors set out in DBS v SRG (DBS). The appellant argued the chambers judge erred in her analysis, primarily by failing to properly apply the DBS factors within the analytical framework set out in Colucci v Colucci (Colucci) and sought an order for retroactive support or a remittal. The respondent conceded the chambers judge might have erred in certain aspects of her analysis but maintained these errors had no impact on the outcome and that the appeal should be dismissed. The parties entered into a separation agreement in 2019 establishing child support based on stated incomes and shared parenting, but the respondent’s income later increased and both children came to live full-time with the appellant. The appellant raised the issue of increased support in a November 2021 email and later sought disclosure and applied for retroactive and ongoing support. The chambers judge ordered increased support prospectively but refused retroactive support. The issues were whether the chambers judge erred in principle in applying the governing law for retroactive child support, including the role of notice, delay, non-disclosure, and the children’s circumstances....