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Family

Does a New Spouse's Income Count for Child Support in Ontario?

TSL Written by the Treadstone Law Team· Updated November 13, 2026

A new spouse's income is not the starting point for child support. The table is read by finding the income closest to the paying parent's income, and income starts from 'Total income' on the tax return. A new partner's finances can still matter indirectly, for example in a hardship claim, and how much depends on the facts.

A court may award a different amount if the payor, or a child, would otherwise suffer undue hardship. Listed circumstances include a parent's legal duty to support another child, for example a child in a new family. Even if hardship is shown, the court must deny the claim if the household of the parent claiming hardship would, after the reduction, have a higher standard of living than the other household.

Special or extraordinary expenses under section 7 are added to the table amount. A court can also impute income to a parent in situations such as intentional under-employment or failure to provide income information when legally required. Whether a new spouse's income affects your case depends on the facts, so it is worth confirming with a lawyer.

Key takeaways

  • The table is read using the paying parent's income, which starts from 'Total income' on the tax return.
  • A court may award a different amount if the payor or a child would otherwise suffer undue hardship.
  • A parent's legal duty to support another child, such as a child in a new family, is one listed hardship circumstance.
  • Even if hardship is shown, the court must deny the claim if the claiming parent's household would have a higher standard of living after the reduction.
This is general information, not legal advice. It doesn’t create a lawyer–client relationship, and the rules can change. For advice on your situation, a Treadstone family lawyer can help.

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Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

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