Question: how do i change the bank account that my child benefit is paid into?
Answer: You can call CRA directly at 1-800-959-8281.
You also can include your new banking information on page 4 of your tax return.
The third option is to change it online by going to CRA's My Account for Individuals page. If you don't have a CRA online account, click the “CRA Register” button to create one.