Will receiving spousal support reduce my other benefits, like the Canada Child Benefit, in Ontario?

If your spousal support is periodic and taxable — paid under a court order or written agreement, rather than as a lump sum — it is added to your net income for tax purposes. Net income is exactly the number the CRA uses to calculate a wide range of income-tested benefits, so taxable spousal support can reduce, or in some cases eliminate, benefits like the Canada Child Benefit, the GST/HST credit, and provincial benefits that phase out as income rises.

This is a common surprise for recipients: a support amount that looks generous on paper can carry a real after-tax, after-benefit cost higher than the marginal tax rate alone suggests, especially for lower-income recipients where benefit clawbacks stack on top of regular tax. Child support, by contrast, is not taxable to the recipient and is not added to net income for these calculations — only spousal support carries this effect.

Because the interaction between spousal support and income-tested benefits can be significant, run the numbers — ideally with a family lawyer and an accountant or tax professional — before agreeing to a support amount or payment structure, so both sides understand the recipient's real take-home value.