I have moved and changed banks since the 3rd stimulus was direct deposited. How will I get the child tax credit, since my old bank account is closed?

[xmasbaby0]

Starting in August you will be able to use a portal on the IRS site to enter banking information for the monthly child tax credit payments. 

https://www.irs.gov/credits-deductions/child-tax-credit-update-portal

https://www.irs.gov/newsroom/irs-announces-two-new-online-tools-to-help-families-manage-child-tax-cr...

IRS.gov/childtaxcredit2021, 

https://www.kiplinger.com/taxes/602431/child-tax-credit-2021-who-gets-3600-will-i-get-monthly-paymen...

[xmasbaby0]

If you moved make sure you are having your mail forwarded by the post office and send in a change of address to the IRS.

CHANGE OF ADDRESS 

https://www.irs.gov/faqs/irs-procedures/address-changes/address-changes