If the CRA concludes that you aren’t eligible for CCB, they will issue a “notice of determination”. They will stop paying CCB and may try to claw back prior payments.
If you think the CRA is wrong, you can file a notice of objection within 90 days of the date of the determination or request an extension of time to object within a year of that date. Alternatively, CRA will likely consider additional documents that are submitted through the review process.
This depends on exactly what the CRA is reviewing the claim for, and what they have requested. One helpful inclusion is letters from third parties verifying your marital status and custody of your kids. CRA generally requests letters from “authority figures” (schools, doctors, religious figures), but even letters from friends and family can significantly improve your odds of success.
