You should complete and mail Form 8822, Change of Address, for the IRS. This is the official way to change your address. I'm linking the form below. By the way, the form is form-fillable.
Thank you. I already e-filed my taxes for year 2020. Can I still e-file form 8822 through TurboTax?
No, this form can only be mailed. So fill it in, print and sign, then mail to the address that you'll select from page 2.
Thanks for the info. I was searching today in IRS web, and it stated that, if you include your new mailing address in f1040 when filing, then there is no need to use and mail f8822. Can you please confirm this? Thanks
@gnabboud If you read that on the IRS website, I'd not argue with that. But it still wouldn't hurt to mail in the Change of Address form, just to be sure.