If the paying parent earns more than $150,000 per year, you may need to calculate both incomes.
The Federal Guidelines provide two options:
</p>
<p>
You can use the tables to determine the child support amount for the first $150,000. Then add the percentage
listed in the tables for the portion of income over $150,000. If you choose this option, you would only need
to calculate the paying parent’s income.
</p>
<p>
or
</p>
<p>
You can use the tables to determine the child support amount for the first $150,000. You can then determine an
amount for the portion of income over $150,000 by looking at the condition, means, needs and other circumstances
of the child and the financial ability of each of you to contribute. If you choose this option, you would need
to calculate both incomes.
</p>
<p>
In some cases:
</p>
<ul>
<li>
You may need to calculate your child’s income—for example, if the child is over the age of majority and you
are taking his or her financial means into consideration to determine a child support amount.
</li>
<li>
You may need to calculate the income of every member of both households to compare the standards of living
if either of you is claiming undue hardship.
</li>
</ul>
<p>
Source:
{% include "partials/tooltip_link_federal_child_support_guidelines.html" with reference_link="http://www.justice.gc.ca/eng/rp-pr/fl-lf/child-enfant/guide/step5-etap5.html#h7" link_text="Federal Child Support Guidelines" %}