- To receive the CCB, you generally must: - Live with the child, who must be under 18 - Be primarily responsible for the child’s care and upbringing - Be a resident of Canada for tax…
- CRA calculates your benefit based on: - Your net family income from the prior year’s tax return (yours, and your spouse’s or common-law partner’s, if you have one) - The number of…
- When parents share custody of a child roughly equally, CRA generally treats each parent as eligible for their own share of the benefit, rather than paying the full amount to one household.
For most Ontario families with children, the Canada Child Benefit is one of the largest, most predictable sources of government support they receive. It’s also one of the most misunderstood — parents often don’t realize how directly their tax filings, income changes, and custody arrangements feed into the number CRA deposits each month.
The Canada Child Benefit (CCB) is a tax-free monthly payment to eligible families to help with the cost of raising children under 18. Like other CRA benefits, it’s calculated automatically from information on your tax return — but unlike a flat family allowance, the amount is personalized to your household’s income and situation, and it changes as your circumstances do.
This article walks through how the CCB is generally calculated, what shared custody changes, and what you need to update when your family situation shifts.
Who Can Receive the CCB
To receive the CCB, you generally must:
- Live with the child, who must be under 18
- Be primarily responsible for the child’s care and upbringing
- Be a resident of Canada for tax purposes
- File a tax return every year — both parents, if there are two, even if one has no income
That last point trips up a lot of families. CRA can’t calculate a household’s CCB amount without both parents’ income information on file, so a missing return, even a nil return, can delay or reduce payments.
How the Benefit Is Calculated
CRA calculates your benefit based on:
- Your net family income from the prior year’s tax return (yours, and your spouse’s or common-law partner’s, if you have one)
- The number of children in your care and their ages
- Whether a child qualifies for the disability tax credit, which can affect the amount
Broadly, the benefit is higher for lower-income families and for younger children, and it declines as net family income rises. Because CRA reassesses annually based on your prior year’s return, your payment amount typically changes each time a new benefit year begins.
Shared Custody: How It Changes Things
When parents share custody of a child roughly equally, CRA generally treats each parent as eligible for their own share of the benefit, rather than paying the full amount to one household.
| Custody Arrangement | How CRA Typically Treats the CCB |
|---|---|
| One parent has primary care | That parent receives the full benefit for the child |
| Parents share custody roughly equally | Each parent may receive their own share, calculated using their own household income |
| Custody arrangement changes mid-year | Both parents should update CRA promptly to avoid over- or under-payment |
Because the shared-custody determination depends on the actual, day-to-day care arrangement — not just what a separation agreement says on paper — it’s worth making sure your parenting arrangement and what you report to CRA line up.
What to Do When Your Family Situation Changes
- Update your marital status with CRA as soon as a separation, divorce, marriage, or common-law relationship begins or ends — this can substantially change your benefit calculation.
- Report a change in custody promptly, including a move from sole to shared custody or the reverse.
- Keep filing your return every year, even during a separation, even with no income, and even if you’re unsure who will ultimately claim the child.
- Correct CRA’s records if a child’s living situation changes — for example, an older child moving out or a new child joining the household.
Frequently asked questions
My ex and I split time evenly with our kids. Do we both get the full CCB?
No. In a genuine shared-custody arrangement, CRA typically splits the benefit between both parents based on each parent’s own household income, rather than paying the full amount to each.
We just separated. When should I tell CRA?
As soon as your marital status actually changes. Reporting late can mean CRA later reassesses and asks for repayment, or that you were underpaid in the meantime.
Does receiving spousal or child support affect my CCB?
Support payments are treated differently from employment or business income for CCB purposes, but they can still interact with your reported net income. Speak with a tax professional if support makes up a significant part of your household’s finances.
CRA says I owe back CCB payments. Is that something a lawyer can help with?
Yes, particularly if the dispute involves how CRA characterized your custody arrangement or income, or if a large repayment is at stake. A CRA reassessment of CCB eligibility can sometimes be disputed the same way any other CRA determination can.
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