How do I delete an iCloud account completely?

Apple runs it through their Data and Privacy site, sign in with the Apple ID and there's a Request to delete your account option. Before you click it: - sign out of iCloud on every device first, otherwise a phone can stay activation locked to an account that no longer exists - download anything you want to keep (photos, notes, iCloud Drive) - cancel subscriptions It isn't instant, Apple verifies the request and that takes about a week. And it's permanent, every purchase on that ID is gone, you can't reopen it later.