Skip to content

How Base Child Support is Calculated – video


Wednesday’s Video Clip: How Base Child Support is Calculated

In this video we discuss how the Child Support Table in the Guidelines sets out the amounts of support to be paid, depending on the “gross income” of the paying parent and the number of children that the support order covers. Gross income means before taxes and most other deductions. The amounts to be paid are based on the average amounts of money that parents at various income levels spend to raise a child.

In simple cases, the table alone will determine how much money will be paid. In more complicated cases, the table is used as the starting point. There is a different table for each province and territory.

If both parents live in Ontario, the Ontario table applies. Also, if the paying parent lives outside of Canada and the parent with custody lives in Ontario, the Ontario table applies. But if the paying parent lives in another province or territory, the table for that province or territory is the one that applies.


The table sets out the amount of support that must be paid at different income levels from $8,000 to $150,000, depending on the number of children. A base amount is given for every $1,000 increase in income, along with a way to calculate amounts in between.

There is also a Simplified Table where you can look up the paying parent’s income to the nearest $100, without having to do any calculations.

Sometimes, a judge does not accept a parent’s statement of income. Instead the judge uses an amount of income that is reasonable based on things such as the parent’s work history, past income, and education. The judge will then apply the table to that income.

A judge might do this if the parent:

• fails to provide the required income information

• is deliberately unemployed or under employed, or

• is self-employed or working “under the table”, and there is reason to believe they do not report all of their income

Before the Guidelines came into effect, judges had more flexibility in deciding the amount of support. Now, in simple cases, judges must order the amount shown in the table. Judges can order different amounts, but only in special cases. And they must use the table amount as a guide.

At Russell Alexander, Family Lawyers our focus is exclusively family law, offering pre-separation legal advice and assisting clients with family related issues including: custody and access, separation agreements, child and spousal support, division of family property, paternity disputes, and enforcement of court orders. For more information, visit us at