Several LLCs Share an Address: Organize Separate IRS Update Files

November 10, 2026 · 6 min read

The answer for this situation

Several LLCs can use the same address while still needing distinct business identities and authority records for an IRS update project. Begin with an entity/EIN/signature matrix, not a single address-change draft copied across the group. For each LLC, identify its current business name, its own EIN, the old address, the proposed new address and the person who can sign for that entity. This is an administrative coordination tool, not a substitute for the information on each applicable Form 8822-B. The concrete outcome is a set of separate, reviewable update files that happen to be managed together. Sharing a mailbox does not establish that the same person is authorized to sign every file, that all old-address facts match or that one service order updates every entity automatically.^{[1, p.1] [1, p.2]}

Which facts change the answer?

Form 8822-B addresses business mailing-address, business-location and responsible-party changes and is filed separately rather than attached to a tax return. Its business-name entry is not a company-name-change application. The filing destination is selected using the old business address, not the new address or formation state alone. Complete the relevant address details, including room or suite information and full foreign country names where applicable. Signer eligibility is considered for the particular entity; a representative signing for the taxpayer attaches a copy of the power of attorney. These requirements remain separate even where the project is prompted by the same change of mailing arrangements.^{[1, p.1] [1, p.2]}

The official requirements, compared

Question or field	Official instruction	Conditions and limits	Source
Official field 8822-B 4a: Business name	Enter the current business name. This form is not a company-name-change application.	—	^{[1, p.1]}
Official field 8822-B 4b: Employer identification number	Enter the business's EIN.	—	^{[1, p.1]}
Signature authority	Form 8822-B is signed by an owner, officer, general partner, LLC member manager, plan administrator, fiduciary or authorized representative, as applicable.	—	^{[1, p.2]}
Purpose	Form 8822-B notifies the IRS of a change to a business mailing address, business location or responsible party. It is not used to change an individual's home address.	—	^{[1, p.2]}
Route old address	The Form 8822-B mailing destination is selected using the old business address, rather than the new address or the state of formation alone.	—	^{[1, p.1]}
Not attached to return	Form 8822-B is filed separately, rather than attached to a tax return.	—	^{[1, p.1]}

Unaltered illustration from the cited official PDF: Form 8822-B (Rev. December 2019). Physical PDF page 1. Document revision: Rev. December 2019 Official source

Read the requirements in context

Official field 8822-B 5: Old mailing address

Enter the old mailing address, including complete foreign-address fields. The old address determines the filing route.^{[1, p.1] [1, p.2]}

Official field 8822-B 6: New mailing address

Enter the complete new mailing address, including room or suite details. Do not abbreviate a foreign country name.^{[1, p.1] [1, p.2]}

Official field 8822-B 10: Signature

An eligible owner, officer or other permitted signer, or an authorized representative, signs and supplies their title and date. A representative attaches a copy of the power of attorney.^{[1, p.1] [1, p.2]}

Representative poa

A representative signing Form 8822-B for the taxpayer must attach a copy of the power of attorney. An unauthorized third party cannot make the change.^{[1, p.2]}

A worked preparation example

This example is hypothetical; it shows how to organize the facts, not an agency decision.

Suppose an administrator coordinates new mailing details for several LLCs. The matrix starts with one row per entity and links to that entity's records rather than using a shared folder name as identity evidence. The administrator checks the current business name and EIN, then records the old address actually relevant to its update file. A proposed new address is copied only after the complete details have been checked for that entity. The signer column identifies the person's capacity and the supporting authority, with representative authorization listed where required. If one LLC has a different old address or an unresolved signature question, its file remains distinct instead of inheriting the answer from the first completed form. The administrator can then see which files are ready for further review and which need a specific document or clarification. A second control lists the relevant routing decision for each old address; it is not assumed from the destination mailbox or the LLC's formation state. This hypothetical does not prescribe combined-envelope rules, claim an update has been processed or allow a convenience contact to sign automatically. It produces a coordinated project whose component taxpayer files can still be understood independently.^{[1, p.1] [1, p.2]}

Turn the records into a usable filing plan

Use two final checks: review each entity file on its own, then reconcile the matrix to the list of entities the project was meant to cover. That sequence catches both a missing company and details copied from a different LLC. A ready file should make clear which supported IRS update is being requested, which address information was used and who has the relevant signing capacity. If a legal-name issue also appears, record it separately rather than treating the name box as the name-change procedure. Keep any state-record question separate too; an IRS update does not promise that other records changed automatically. SpeedEIN's relevant service concerns one supported IRS address, location or responsible-party update, with no guaranteed processing date. A group project needs an accurate scope discussion rather than an assumption that a common address or administrator combines multiple engagements. The matrix helps organize that discussion and retain the identity and authority distinctions through later correspondence, without creating new permission or an IRS filing result by itself.^{[1, p.1] [1, p.2]}

Three checks before you proceed

Does every LLC have its own supported name, EIN, old address and complete proposed address in the matrix?
Is signing authority established separately for each entity, including a representative's required authorization?
Have old-address routing, separate filing and the one-update service boundary remained distinct from project coordination?

Official sources and document versions

Official source versions checked: 2026-11-10

Form 8822-B (Rev. December 2019) — Rev. December 2019

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