Child Support Changes Effective October 1, 2025

Child support is payable under the Divorce Act and Alberta’s Family Law Act where there is a child of the marriage or relationship. In most cases, the amount of child support is determined using the Federal Child Support Guidelines, which include Federal Child Support Tables setting out the monthly child support amounts.

Why the Child Support Tables Have Changed

Following changes to federal tax rules in 2023, the Government of Canada updated the Tables to reflect the new tax treatment of income. These updates ensure that child support amounts continue to be calculated fairly and consistently across Canada, including in Alberta.

2017 Tables vs. 2025 Tables

Before these updates, child support calculations were based on the 2017 Tables, which applied to the period from November 22, 2017 to September 30, 2025 (https://www.justice.gc.ca/eng/fl-df/child-enfant/2017/look-rech.aspx ).

As of October 1, 2025, child support amounts are now determined using the 2025 Tables (https://www.justice.gc.ca/eng/fl-df/child-enfant/ft-tf.html).

Do the New Tables Automatically Change Existing Orders?

If you are a recipient or payor of child support, it is important to understand that the updated 2025 Tables do not automatically change existing child support orders or agreements. Any change to the amount payable generally requires a review, variation or a court application.

If the new Tables result in a different child support amount, you may wish to consult with an Edmonton family lawyer to discuss whether a variation of your current child support order is appropriate.

Retroactive Child Support and Arrears

If you are seeking retroactive child support or child support arrears, the applicable Tables will depend on the time period being claimed. In many cases, the 2017 Tables may still be relevant for portions of a retroactive claim that fall within their effective dates.

For example, if you are seeking child support arrears for a three-year period beginning January 1, 2026, the calculation would generally be as follows:

The 2017 Tables would apply from January 1, 2023 to September 30, 2025; and
The 2025 Tables would apply from October 1, 2025 to December 31, 2025.

Because retroactive child support calculations can be complex, obtaining legal advice from an Alberta family lawyer can help ensure the correct Tables are applied and the proper amount is calculated.

Book your consultation today with Ajay Devgun or Jaskirt Sidhu.

Jaskirt Sidhu