If your corporation already has an employer identification number (EIN) and is only considering S corporation tax treatment, do not request another EIN solely for the election. The EIN identifies a taxpayer; a separate IRS election requests S treatment for an eligible entity. A newly formed entity that has never had an EIN may need its first number before addressing its other filing obligations. Sort those two paths before opening any application Page.
See the EIN application hub for all entity types and the general corporation guide for formation and first-EIN preparation.
Do you need a new EIN or an S corporation election?
Ask whether a legal entity has already been formed and whether it has an EIN. If the existing corporation is the same taxpayer and only wants S treatment, investigate the election and its eligibility; a new number is not the ordinary solution. If a genuinely new corporation or other eligible entity is formed without a number, identify that actual taxpayer and prepare its first EIN request. Ownership or structure changes can be more complicated, so use the current IRS new-EIN rules for the specific transaction.
Do not describe an entity as an approved S corporation simply because its owner prefers the label, opened a bank account, or obtained an EIN. Approval and effective treatment depend on a valid election and applicable requirements.
What an EIN does, and what Form 2553 does
| Record or action | Purpose | What it does not prove |
|---|---|---|
| State formation | Creates or records the legal corporation or LLC under applicable state law. | Does not automatically issue a federal EIN or approve S treatment. |
| Federal EIN | Identifies the entity for federal tax administration. | Does not submit Form 2553 or certify eligibility. |
| Form 2553 election | Requests S corporation treatment for an eligible entity under IRS rules. | Does not by itself mean the same existing corporation needs a second EIN. |
Use the EIN notice and any election correspondence as different records. Neither should be presented as proof that the other process was completed.
New entity versus existing EIN
Newly formed entity: Verify the state-law identity and legal name, determine whether it already has an EIN, and check the responsible party and method criteria for a first request. Then handle any separate federal tax election under its own instructions.
Existing entity: Locate the previously assigned EIN in tax, payroll, banking, or IRS notice records. Check the actual legal change, if any. If the sole change is choosing S treatment, use the election process rather than a duplicate EIN request. A missing assignment letter can be addressed through an appropriate number-confirmation process.
Illustrative scenario: A corporation formed years ago has an EIN and now asks about S treatment. Its owners review eligibility and election records; they do not file a new EIN application for the same corporation merely to change tax treatment. A separate newly chartered corporation with no prior number first identifies its legal entity and prepares a first EIN. No tax saving or election approval is implied for either company.
Eligibility questions to resolve
The IRS S corporation rules address domestic status, permitted shareholders, shareholder count, and stock-class restrictions, among other requirements. A corporation’s ownership records and governing documents matter. An EIN assignment does not verify those conditions. Do not accept a service advertisement or a generic “small business” label as an eligibility determination.
Some LLCs can consider S corporation tax treatment, but their state-law LLC identity and federal classification are different facts. Consult the LLC EIN guide before reporting a formed LLC as though it were incorporated under state law. The election question needs its own current instructions; this site does not decide eligibility or file Form 2553 through its unavailable EIN application Page.
Application and election records to prepare
- Legal entity name, formation records, jurisdiction and date, and any existing EIN assignment.
- Principal officer or other actual controlling individual for responsible-party purposes, and separately authorized applicant information.
- Business activity, mailing and principal locations, employment plans, and applicable tax facts for a first EIN request.
- Shareholder or member records, stock or governing-document facts, and effective-date questions for a separate election review.
- Any prior Form 2553 or IRS election correspondence, kept distinct from EIN documents.
This is an offline preparation checklist. Sensitive identifiers and ownership records do not belong in comments, email, or the unconfigured application placeholder.
Application methods and later records
The IRS issues EINs directly at no charge. Its current online tool has domestic organization, qualifying principal-location, authorized-applicant, and responsible-party identifier conditions. Other circumstances may require the current Form SS-4 fax/mail route or a qualifying international telephone route. Check those rules for a genuinely needed first EIN; an S election does not make an otherwise ineligible applicant eligible for the online tool.
After an EIN is issued, keep its notice with formation and tax records. Keep election filing and response records separately. Review payroll and other applicable obligations without assuming the EIN alone completed them. This is a private, non-government website. The IRS issues EINs directly at no charge, and the linked S corporation EIN application Page does not currently submit information.
Common errors to avoid
Ordering another EIN solely to elect S treatment can create duplicate-identity confusion. Form SS-4 does not silently file Form 2553. A Page labeled “S corporation EIN” does not give a special government number format, tax advice, or election approval. An LLC considering S treatment must keep its actual legal form and classification questions separate. Review the entity’s records first, especially when the owners disagree about whether a different corporation or only a tax election is involved.
A personal service corporation is another federal classification question, not a synonym for S treatment. Its service and ownership facts deserve a separate review.
S corporation EIN FAQs
Is there a special S corporation EIN number format?
No. The marketed label describes a tax-treatment question, not a special category of EIN digits. The IRS identifier and election are separate matters.
Does obtaining an EIN elect S corporation status?
No. A valid Form 2553 election is a distinct filing with its own eligibility and effective-treatment rules.
Do I need another EIN when my existing corporation elects S status?
Not solely because that same corporation elects S treatment. Review any actual structural change and the existing number first.
Can an LLC consider S corporation tax treatment?
Potentially, subject to the relevant classification and eligibility rules. Its state-law identity remains an LLC; see the LLC guide for the identifier distinction.
Can any shareholder own an S corporation?
No. The IRS limits eligible shareholders and addresses shareholder count and stock classes. A short checklist or EIN notice does not establish approval.
Will this EIN application page file Form 2553?
No. The online form is not configured, and this release does not offer or submit an S election.
Does an EIN assignment notice prove the S election was accepted?
No. Preserve the EIN notice and the separate election records; each documents a different process.
Related guides and application page
Read the corporation, LLC, and personal service corporation guides for the related identities. Only if the actual entity needs a first EIN should you view the S corporation EIN application page. Its online form is not available and opening it does not file an EIN request or Form 2553.