Child support is often described as straightforward because it is based on guidelines. In practice, errors are common and can have long-term consequences.
The starting point is accurate income and a clear understanding of the parenting arrangement.
What you need to confirm
- Your current annual income (Line 15000 or equivalent)
- Details of bonuses, commissions or variable income
- Business income and expenses, if applicable
- Parenting schedule, including number of overnights
- Any other children or support obligations
- Special or extraordinary expenses (Section 7), with receipts
Practical guidance
Be consistent. Income figures should align across tax returns, financial statements and court materials.
Keep records. Track child-related expenses, especially those that may qualify under Section 7.
Understand the purpose. Child support is the right of the child. It is not negotiable in the same way as other issues.
Common issues
- Underreporting or misunderstanding income
- Disputes over shared parenting thresholds
- Disagreement on what qualifies as a Section 7 expense
- Failing to update support when income changes
Why it matters
Incorrect child support can lead to arrears, enforcement action and ongoing disputes. Getting it right early avoids complications later.
For a detailed overview, see:
10 Things You Should Know About Child Support in Ontario
