EIN Renewal: When and Why

Common question we get: "Does my EIN expire and need renewal?" Short answer: no, an EIN never expires. But there are specific scenarios where you need a NEW EIN. Here is when.

Answer

EINs do not expire. Your Wyoming LLC EIN stays valid for the lifetime of the entity. You need a NEW EIN only when: (1) Your LLC structure changes (e.g., converting from single-member disregarded entity to multi-member partnership). (2) You form a new LLC (separate from your existing one). (3) You merge or restructure entities. (4) You change tax election (e.g., LLC electing S-Corp status). The existing EIN stays valid through all other changes (address change, member update, etc.).

By Zawwad, Founder & CEO, WyomingLLC by Topslice LLC.

Last updated May 20, 2026

What changes do NOT require a new EIN

Change of registered agent
Change of mailing address
Adding or removing members in multi-member LLC (with conditions)
Changing LLC name (file amendment, EIN stays)
Moving to a different US state (foreign qualification, EIN stays)

What DOES require a new EIN

Converting single-member LLC to multi-member (changes federal tax classification)
Converting LLC to corporation
Merging two LLCs into one new entity
Forming a separate new LLC
Owner change in single-member LLC (technically a new entity for tax purposes)

How to get a new EIN when needed

Same Form SS-4 fax process as the original. File new application referencing the new entity structure. Old EIN remains on the books until you formally close it (via Form 8869 or by simply ceasing to use it). New EIN gets issued in 8-10 business days.

How to close an old EIN

If you dissolve your LLC, the EIN becomes inactive automatically. You do not need to formally close it with the IRS. But you should file a final Form 5472 + 1120 for the year of dissolution. If you simply stop using an EIN without dissolving the LLC, the LLC may face administrative issues with the state.

Common myths

"EINs expire after 10 years": False. EINs are permanent for the entity.
"I need to renew my EIN annually": False. Annual reports are separate from EIN status.
"My EIN was cancelled when I missed Form 5472": False. EIN persists; the IRS just penalizes you for non-filing.

Frequently asked questions

How do I check my EIN is still valid?

Call IRS Business and Specialty Tax Line at 1-800-829-4933 (US-resident option) or 1-267-941-1099 (international). They confirm EIN status by name + EIN number.

What if I lost my CP575 EIN letter?

Request a replacement letter (147C). Call IRS at the same number. They mail a duplicate letter to your registered address.

Can I use an EIN forever even if the LLC is inactive?

Technically yes but not recommended. Inactive LLCs miss annual reports and face administrative dissolution. Better to formally close and re-form if needed.

Do I need a new EIN for a related Wyoming LLC?

Yes. Each separate Wyoming LLC needs its own EIN. They cannot share.