Shared custody and the Canada Child Benefit

Two houses on a high street. — Two houses on a street. In a genuine shared-custody arrangement, each parent can receive half the CCB. Photo: Wikimedia Commons, CC BY-SA 4.0.

Attached houses on a street in Northbridge. — Attached houses. Each parent's 50% share is calculated on that parent's own family income. Photo: Wikimedia Commons, CC BY-SA 4.0.

A separate house beside attached houses. — Houses on a street. Living with the child less than 40% of the time means no CCB for that child. Photo: Wikimedia Commons, CC BY-SA 4.0.

When parents do not live together, the CCB follows where the child actually lives — measured in time, not in legal labels.

The 40–60% rule

If the child lives with each parent between 40% and 60% of the time, the arrangement counts as shared custody. Each parent then receives 50% of what they would receive at 100%, calculated on each parent's own AFNI. The two halves are not equal unless the two incomes happen to be equal — each parent's share follows their own family income.

If the child lives with a parent less than 40% of the time, that parent is not eligible for the CCB for that child at all.

The retroactive repayment risk

This is the part that catches people out. If one parent has been receiving 100% and the other parent later applies and establishes shared custody, the first parent can face repayment of the 50% that should have gone to the other parent. Report a shared-custody arrangement when it starts, not when the CRA discovers it — through CRA My Account or Form RC66, as the how to apply page explains.

What to keep

Keep records of the living arrangement — school, medical, and activity records that show where the child actually spends their time. If the arrangement changes, tell the CRA promptly: a change in the percentage can move a family across the 40% line in either direction.

Sources

CRA publication T4114(E) Rev. 26, "If you share custody of a child": canada.ca — T4114.

General information only. This page explains the Canada Child Benefit in plain English. It is not legal, financial, or tax advice, and it cannot decide whether you qualify. Only the Canada Revenue Agency (CRA) can decide a claim. Figures change every July — always confirm the current figure with the CRA before you act on it. Contact: hello [at] tapetoolhq.com.