Form 8822 and Form 8822-B
Form 8822 is used for individual address changes. Form 8822-B is used for business address changes or responsible-party changes. These forms exist because the IRS needs a standardized way to update contact and responsible-party records outside the annual return itself.
Form 56
Form 56 gives notice of a fiduciary relationship or its termination. The form can matter for estates, trusts, guardianships, receiverships, and other situations where someone is acting in a fiduciary capacity. Tax Paperwork can help with draft mechanics only after authority is already known from independent records.
Form 8802
Form 8802 is an application for U.S. residency certification, commonly connected to Form 6166. The form asks for facts about the applicant, country, year, and purpose. It is not a general treaty-advice workflow.
Composite examples
A taxpayer moves after filing and wants future notices sent to the right place. A business changes the person the IRS should treat as responsible for entity records. A trustee has documentation of authority and needs to notify the IRS. A taxpayer needs a residency certification for a foreign withholding process.
In each case, the paperwork is administrative, but wrong facts can create real follow-up problems. That is why a draft preview should ask plain questions, explain the boundary, and keep sensitive data local.