Child support in Ontario: the basics to organize

What income, parenting time, special expenses, and existing orders can matter when preparing a child-support conversation.

Short answer

Child support usually depends on the applicable guidelines, the paying parent’s income, the number of children, parenting arrangements, and certain special or extraordinary expenses. Gather current income information and records of the child’s needs before asking a professional to assess the amount.

Educational content only. It is not legal advice and cannot assess your circumstances. Laws, deadlines, forms, and procedures can change; confirm the current position with an official source or qualified professional.

What information affects the discussion?

A support conversation needs more than a monthly number. Identify the children, current living and parenting arrangements, each parent’s income sources, and expenses that may need to be shared.

Recent tax returns and notices of assessment
Pay stubs or business-income information
Parenting schedule and overnights
Receipts or estimates for childcare, health, education, or activities

Why do records matter?

Support can be reviewed when income, parenting time, or a child’s needs change. Keep a dated record of payments and written requests for updated information.

Separate base support from special expenses
Record payment dates and methods
Ask how self-employment or variable income is assessed
Review existing orders or agreements before changing payments

Common questions

Is child support optional if parents share time?

Parenting arrangements can affect the analysis, but support is not automatically zero. The guidelines and facts determine the discussion.

Can support be changed later?

It may be possible when income, parenting, or the child’s needs change. Follow the legal process or written agreement required rather than changing payments informally.