Child support is based on circumstances that can change over time. A shift in either parent’s income, a change in parenting arrangements, or new expenses for a child may be reasons to review the amount. A review does not automatically mean support will change, and the right process depends on how your existing arrangement was made. Start by identifying what has changed, when it changed, and which records can help explain the difference.
When to review child support
A significant change in a parent’s income is a common reason to revisit child support. This could follow a job loss, a new position, reduced work hours, self-employment income changes, or retirement. A change in income does not by itself set a new amount. The effect depends on the applicable child support rules and the details of the family’s situation.
Parenting arrangements can also change. If the child spends substantially different time with each parent, or a child’s living arrangements change, the existing amount may no longer reflect the current situation. Other possible reasons include a child becoming eligible for support in a different way or a change in expenses for special needs or activities. Keep the focus on the child’s circumstances and the terms of your existing order or agreement.
Gather useful records
Collect recent income records for the parent whose finances have changed. Depending on the situation, useful documents may include tax returns and notices of assessment, pay stubs, an employer letter, records of employment, or financial statements. Self-employed parents may need business financial statements and records that help explain income. Provide complete, accurate documents rather than relying on estimates or isolated pay periods.
For a change in parenting time, keep a clear calendar or other records showing when the child stayed with each parent. For child-related expenses, gather invoices, receipts, proof of payment, and information about insurance or reimbursements. Also locate the current court order, written agreement, and any prior support calculations. These materials help show both the existing arrangement and the facts you want reviewed.
Choose the right way to request it
First, check how child support was set. If a court order is in place, the order generally remains effective until it is changed through the proper process. If support comes from a written agreement, review its terms and consider whether both parents can agree to an update. Do not assume that an informal conversation changes a court order or ends an existing payment obligation.
In Ontario, parents may be able to use a consent process when they agree, or ask the court to decide when they do not. The steps and required forms depend on the case. A lawyer or family law professional can help you identify the correct procedure, prepare financial disclosure, and explain how a change may apply. Keep paying the amount currently required unless it is formally changed or you receive legal advice specific to your situation.
Prepare a clear timeline
Write down what changed, when it happened, and how it affects support. For example, note the date a job ended, when a new parenting schedule began, or when a child-related expense started. Link each point to a document where possible. A concise timeline can make discussions more focused and help a decision-maker understand why you are seeking a review.
Before sending records, make sure they are current, readable, and organized by topic. Keep copies of what you provide and note when you shared it. If the other parent disputes the change or will not provide necessary financial information, get advice about your options rather than withholding support or changing payments on your own.
A practical review starts with the current order or agreement, clear evidence of what has changed, and complete supporting records. The process can differ depending on how support was set and whether both parents agree. Next Chapter Law can help you understand the available steps and prepare for a child support review.