A portion of your child support that is paid to the children from your previous marriage will be deducted from your net income used to calculate your monthly basic child support obligation. (rocketlawyer.com)
The tables set out basic child support amounts that depend on the income, the number of children, and the province or territory of residence. (justice.gc.ca)
It is helpful in assessing specific needs of the children that may not be covered in basic child support (e.g. particular medical needs or private school expenses). (raleigh-divorce-lawyers.com)