The Canada Child Benefit goes to the parent or guardian who meets the Canada Revenue Agency (CRA) eligibility criteria and is primarily responsible for a child. Three elements decide eligibility: Canadian residency for tax purposes, the child’s qualifying status, and which parent is the primary caregiver. The CRA source sets no fixed application deadline, and the figures for child age and spousal income are not in the verified source material for this section, so they are not stated here.
Who can apply for the Canada Child Benefit?
Residency and tax status
Eligibility is tied to residency in Canada for tax purposes. The verified source does not list the residency test itself, so check the CRA eligibility page for the full criteria before you apply. The source does confirm one residency case: a spouse or common-law partner who was a non-resident for part of a year must also complete Form CTB9 for that period, in addition to your own application.
Child age and qualifying child
Benefits are paid for a qualifying child, and the CRA sets the age limit for that status. The source material for this section does not give the age figure, so do not rely on a number from memory or a third-party site. Confirm the age limit on the CRA page for the year you apply.
Spouse or common-law partner net income
The source material does not describe how a spouse’s or common-law partner’s net income affects eligibility, and no income threshold is given here. What the source does establish is that the relationship changes who is treated as the primary caregiver.
Primary caregiver rules
| Situation | Rule from CRA |
|---|---|
| Parents are spouses or common-law partners | The female parent is presumed to be primarily responsible |
| The other parent is primarily responsible | A signed letter from the female parent is sent with Form RC66 |
| Both parents are the same sex | No letter is needed |
When should you apply?
The Canada Child Benefit has no fixed application deadline. The Canada Revenue Agency (CRA) states on its page dated 2026-10-22 that you should apply as soon as you or your spouse or common-law partner meet the eligibility criteria and one of the qualifying events below occurs. The event starts the application, not a calendar date.
Life events that start the application
Apply when any of the following happens, provided you meet the eligibility criteria:
- A child is born.
- A child starts living with you.
- A child returns to live with you after a temporary stay elsewhere.
- You get custody of a child.
- A shared custody arrangement begins, ends or changes.
Because each event is a trigger in its own right, you do not need to wait for a notice from the CRA before applying.
Custody and shared custody changes
Custody changes are a trigger in both directions. If you gain custody of a child, you can apply from that point. If a shared custody arrangement begins, ends or changes, the change itself is a qualifying event. A modified arrangement is therefore a reason to apply again, not only the original setup.
Child returning after a temporary stay elsewhere
When a child returns to live with you after a temporary stay elsewhere, the return counts as a qualifying event. The CRA page does not define how long a stay must last to be considered temporary, so check the criteria on the CRA site before assuming a stay qualifies or not.
Three ways to apply
There are three ways to apply for the Canada child benefit: when you register a birth with your province or territory, through your CRA account, or by mailing a completed and signed Form RC66 with your documents to your tax centre. The channels differ in where the application starts, which provinces offer them, and whether you must send proof of birth.
| Channel | Starting point | Proof of birth required |
|---|---|---|
| Birth registration with benefit application | Registering the birth with your province or territory | No |
| CRA account | Benefits and credits, then Child information | Only if the CRA has never paid benefits for the child |
| Form RC66 by mail | Completed, signed Form RC66 with documents, sent to your tax centre | Only if the CRA has never paid benefits for the child |
Birth registration with benefit application
This route combines the two steps. When you register a child’s birth, you can apply for the benefit at the same time. Online birth registration with a benefit application is available in Ontario, Quebec, British Columbia and Alberta. It is not available in Nunavut, so residents of other provinces and territories must use one of the two other channels.
CRA account: Benefits and credits
- Sign in to your CRA account.
- Go to Benefits and credits.
- Add the child under Child information.
The source does not limit this route to specific provinces, so it is the option to check if birth registration is not offered where you live. Proof of birth is required on this route if the CRA has never paid benefits for the child.
Mailing Form RC66 to your tax centre
- Complete Form RC66.
- Sign the form.
- Attach your documents and send the package to your tax centre.
Documents not in English or French need an acceptable translation, sent with a copy of the original. This is the only channel that relies entirely on paper, so allow for mail delivery time.
Documents to prepare
The Canada Revenue Agency (CRA) asks for supporting documents in four categories: proof of birth, proof of primary responsibility, proof of living in Canada and, for a period starting more than 11 months ago, proof of citizenship status (one document). Which categories apply depends on how you apply and on the start date of the period you are claiming. The CRA page dated 2026-10-22 sets these conditions:
| Category | When it is required | Count or condition |
|---|---|---|
| Proof of birth | The CRA has never paid benefits for the child, and you apply online or by mail | Not needed if you apply through birth registration |
| Proof of primary responsibility | You apply for a period starting more than 11 months ago | At least three documents |
| Proof of living in Canada | You apply for a period starting more than 11 months ago | At least three documents |
| Proof of citizenship status | You apply for a period starting more than 11 months ago | One document |
| Proof of birth for each child | You apply for a period starting more than 11 months ago | One for each child |
Proof of birth depends on payment history. Before you gather papers, confirm whether the CRA has already paid benefits for the child. If it has not, and you apply online or by mail, you must provide proof of birth. If you register the birth through your province or territory with a benefit application, this proof is not required.
Proof of primary responsibility is needed for a period starting more than 11 months ago. Assemble at least three documents, and check the CRA’s list of acceptable documents for the full set of options, since the source does not enumerate them. When the parents are spouses or common-law partners, the female parent is presumed to be primarily responsible. If the other parent is the one primarily responsible, they need a signed letter from the female parent, sent with Form RC66. No letter is needed if both parents are the same sex.
Proof of living in Canada follows the same timing rule. Assemble at least three documents that show you lived in Canada during the period claimed.
Once the list is complete, check the language of each document:
- Note which documents are not in English or French.
- Obtain an acceptable translation of each one.
- Send the translation together with a copy of the original.
How do newcomers apply?
Newcomers and returning residents must submit Schedule RC66SCH together with Form RC66. The schedule is mandatory for these applicants and is not an optional attachment. Read the form on the Canada Revenue Agency (CRA) website before you complete it. This information is from the CRA, updated 2026-10-22.
The extra paperwork depends on your residency situation:
| Situation | Additional requirement |
|---|---|
| Newcomer or returning resident | Schedule RC66SCH submitted with Form RC66 |
| Spouse or common-law partner who was a non-resident for part of a year | Form CTB9 for that period |
| Application covers a period starting more than 11 months ago | Additional proof of residency and responsibility for the child |
| Parents are spouses or common-law partners and the other parent is primarily responsible | Signed letter from the female parent, sent with Form RC66 |
Arrival date is the key detail. The application is triggered when a child starts living with you or returns after a temporary stay elsewhere, so record that date exactly. The 11-month threshold applies to how far back the period you claim begins.
There is no fixed deadline to apply after the trigger event, but a late application that reaches back more than 11 months requires the extra proof described above.
Late applications and special cases
The Canada Revenue Agency (CRA) sets no fixed deadline for applying for the Canada child benefit. The start date of the period you claim does matter, though. If the period starts more than 11 months before your application, the CRA requires additional proof beyond the standard file. Apply as soon as a trigger occurs: a child is born, starts living with you (or returns after a temporary stay elsewhere), you get custody of a child, or a shared custody arrangement begins, ends or changes (Canada Revenue Agency, page dated 2026-10-22).
For a claim covering a period that starts more than 11 months earlier, you must provide:
| Proof required | Minimum documents |
|---|---|
| Proof of citizenship status | 1 document |
| Proof of living in Canada | At least 3 documents |
| Proof of birth for each child | Birth proof for every child listed |
| Proof of primary responsibility for the child | At least 3 documents |
Proof of birth is also required when the CRA has never paid benefits for the child and you apply online or by mail. It is not needed if you apply through birth registration.
Custody changes count as triggers in their own right. A parent or caregiver who gains custody should apply at that point rather than wait. When the parents are spouses or common-law partners, the female parent is presumed to be primarily responsible. If the other parent is primarily responsible, they need a signed letter from the female parent, sent with Form RC66. No letter is needed if both parents are the same sex.
The source does not describe separate rules for non-parent caregivers, so check with the CRA about your situation.
What happens after you apply?
After the Canada Revenue Agency (CRA) receives your application, it reviews the file to decide whether the child qualifies. Those details cannot be stated as fact here. The steps below explain how to follow the file and confirm the outcome from official sources.
Review and assessment
The CRA checks the application against the eligibility criteria for you or your spouse or common-law partner and for the child. The application is assessed once the CRA has the information it needs to make a decision. Check the CRA’s official benefits pages for current processing information, and keep your CRA account details up to date while the file is pending.
Notice of assessment and eligibility confirmation
The source does not describe how the CRA communicates its decision, so check your CRA account and your mail for any notice. Check there to see whether the child has been accepted for benefits. Check your CRA account for this notice and for any eligibility decision. Confirm that the child appears in your account under Child information, since this is the record that the CRA uses for the benefit. If the child is not listed or the decision does not match what you expected, contact the CRA before relying on any amount.
Payment start date and monthly schedule
Once eligibility is confirmed, the payment start date is the first date the CRA issues benefit payments for the child. The source gives no payment dates, so check your CRA account for the first payment date. Record the first payment date shown in your account and compare it with the CRA’s official benefit payment schedule. Keep the notice of assessment with your household records, because it is the reference for the amounts and dates.
Frequently asked questions
Can I apply without mailing a form?
Yes. You can apply through your province or territory when you register a birth, or sign in to your CRA account, go to Benefits and credits, and add the child under Child information. Online birth registration with a benefit application is available in Ontario, Quebec, British Columbia and Alberta, but not in Nunavut.
Do I need to send proof of birth with my application?
Only in some cases. Proof of birth is required if the CRA has never paid benefits for the child and you apply online or by mail. If you apply through birth registration, you do not need to send it.
Do newcomers to Canada need an extra form?
Yes. Newcomers and returning residents must submit Schedule RC66SCH together with Form RC66.
