Does the IRS Accept a Virtual Address for a Business?
The IRS does accept a virtual address as a business entity's mailing address on Form SS-4, but a separate physical address field, when it applies, cannot be a P.O. box.
The instructions treat "mailing address" and "physical address" as two different fields with two different rules, and they never mention CMRAs or virtual mailboxes by name. Checked September 25, 2026
Quick facts
| Question | Answer |
|---|---|
| SS-4 mailing address (lines 4a-4b) | Allowed "Enter the mailing address for the entity's correspondence." A mailbox or PO box can serve as this address (Instructions for Form SS-4). |
| SS-4 physical address (lines 5a-5b) | Not allowed Required "only if different" from the mailing address, and "Don't enter a P.O. box number here" (Instructions for Form SS-4). |
| Changing an address later | Form 8822-B reports a change to the business mailing address, business location or responsible party (About Form 8822-B). |
| BOI reporting | No longer required for US-created companies as of a FinCEN final rule effective August 14, 2026 (FinCEN news release). |
Does the IRS accept a virtual address on Form SS-4?
Form SS-4 is the application for an Employer Identification Number (EIN), and it asks for two different kinds of address. Lines 4a-4b instruct the applicant to "Enter the mailing address for the entity's correspondence," and a mailbox or PO box can serve as that mailing address (Instructions for Form SS-4). That field exists so the IRS can send correspondence, notices and the EIN confirmation letter somewhere the business will actually check it.
Lines 5a-5b are different. They are required "only if different" from the mailing address on lines 4a-4b, and the instructions state directly: "Don't enter a P.O. box number here" (Instructions for Form SS-4). If the physical address matches the mailing address, lines 5a-5b can be left blank; if it does not, the physical address has to be a street address, not a box. This same mailing-versus-physical split shows up on other forms and fields a business fills out, and the LLC and Compliance guide walks through which address fields a mailbox can fill beyond the SS-4 form.
The SS-4 instructions do not mention CMRAs, virtual mailboxes or private mailbox providers by name anywhere. The IRS does not publish a list of approved or banned mailbox providers, and this page does not claim the IRS approves or rejects any specific service. The rule is about which field the address goes in, not about what kind of business operates the address.
Changing an address: Form 8822-B
When a business's mailing address, business location or responsible party changes after the EIN has been issued, the IRS uses Form 8822-B to update its records (About Form 8822-B). This is the form to file if a business starts using a virtual mailbox address after already having an EIN, or switches from one mailbox provider to another.
Form 8822-B generally takes 4 to 6 weeks to process (Form 8822-B). Filing it does not change any other agency's rules; a bank, a state filing office or USPS each apply their own address requirements separately, and the guide to bank address rules for business accounts covers what a bank asks for when opening an account.
BOI reporting status
Beneficial ownership information (BOI) reporting is a separate FinCEN requirement, not an IRS one, but it is often confused with EIN or address paperwork. FinCEN's interim final rule of March 21, 2025 exempted companies created in the United States from BOI reporting, and a final rule effective August 14, 2026 permanently removes BOI reporting for US companies and US persons. Foreign reporting companies are still required to report (FinCEN news release; Treasury press release). This change does not affect the SS-4 mailing and physical address rules described above.
Common mistakes
- No Entering a P.O. box or mailbox address on SS-4 lines 5a-5b when a physical address is required there.
- No Assuming the IRS has approved or endorsed a specific virtual mailbox or CMRA provider by name; the instructions never name one.
- No Moving or switching mailbox providers without filing Form 8822-B to update the IRS record.
- No Treating IRS acceptance of a mailing address as proof that a registered agent, a bank or a state filing office will accept the same address; each sets its own rule, as the CMRA explainer describes.
What this means for choosing a provider
Any virtual mailbox address can go on SS-4 lines 4a-4b as the mailing address, so the choice of provider does not change whether the IRS accepts the address there. It matters more for mail handling: how fast scans and forwards happen, and whether the provider offers a physical street address option for lines 5a-5b if one is ever needed. Compare current virtual mailbox providers compared by fees and check the total monthly virtual mailbox cost before signing up, since IRS acceptance of the mailing address is the same everywhere but plan features and fees are not.
FAQ
Does the IRS accept a virtual address for an LLC?
Yes, for the mailing address on Form SS-4 lines 4a-4b, which can be a mailbox or PO box. A separate physical address on lines 5a-5b is only required if it differs from the mailing address, and it cannot be a P.O. box.
Can I use a virtual address for my EIN application?
Yes, as the mailing address entered on SS-4 lines 4a-4b. The instructions describe this as the address for the entity's correspondence and do not restrict it to a physical location.
What is the difference between the SS-4 mailing address and physical address?
The mailing address on lines 4a-4b is where the IRS sends correspondence, and a mailbox or PO box can be used there. The physical address on lines 5a-5b is required only if it differs from the mailing address, and the instructions say not to enter a P.O. box number in that field.
How do I change my business address with the IRS?
File Form 8822-B, which reports a change to the business mailing address, business location or responsible party. It generally takes 4 to 6 weeks to process.
Does a virtual address affect BOI reporting?
Not directly. A FinCEN final rule effective August 14, 2026 removed BOI reporting for US-created companies and US persons entirely, so the question of what address is on file no longer applies to BOI for those companies. Foreign reporting companies still have to report.
Not tax advice. This page explains what the IRS Instructions for Form SS-4 and Form 8822-B say about address fields. It is general information, not tax advice for a specific business or filing situation. Confirm current requirements on IRS.gov or with a tax professional before filing.
How this page is sourced
This guide was written by Cedrick Reese for VirtualMailboxBusiness.com from the IRS Instructions for Form SS-4 (December 2025 revision), Form 8822-B and FinCEN notices on beneficial ownership reporting. Instruction text is quoted directly, and the page notes where the IRS is silent. It is reviewed when the IRS issues new form revisions.
Sources
- IRS: Instructions for Form SS-4, checked September 25, 2026
- IRS: Form 8822-B, checked September 25, 2026
- IRS: About Form 8822-B, checked September 25, 2026
- FinCEN: news release on BOI reporting removal for US companies, checked September 25, 2026
- US Department of the Treasury: press release on BOI reporting removal, checked September 25, 2026