An overseas founder can sometimes obtain a US Employer Identification Number without first getting a Social Security number or ITIN. The important questions are whether the responsible party qualifies for that route and how the application should be submitted.
Scope: US federal EIN applications for international founders. Guidance checked on 14 September 2026 against the December 2025 Form SS-4 instructions; this is not a determination of an owner’s personal tax position.
An EIN application and an ITIN application answer different questions
An EIN identifies an entity for tax administration. It does not replace the owner’s personal taxpayer number. Form SS-4 specifically allows “foreign” or “N/A” on line 7b when the responsible party has neither an SSN nor an ITIN and is ineligible to obtain either. That condition matters: simply living overseas or preferring not to apply for a personal number is not the test. IRS: Form SS-4 instructions.
Start by documenting why the entity needs an EIN. Separately identify any personal US tax return or other qualifying tax purpose that could make an ITIN relevant. Treat those as two connected enquiries, rather than assuming one application always has to come first.
Check the online conditions before choosing a submission route
The IRS online service requires a US or US-territory principal place of business and the responsible party’s SSN or ITIN, alongside its other eligibility conditions. A US formation certificate alone does not establish eligibility for that online service. The IRS also says an LLC or corporation should be formed with the state before applying for its EIN. IRS: online EIN eligibility and formation sequence.
Where the principal place of business is outside the US, the IRS provides international phone, fax and mail routes. Select the route using the entity’s actual circumstances and current IRS instructions. Use one application method for the entity; submitting repeated applications through different channels can create avoidable problems. IRS: EIN application routes.
Compare the available application routes
- Online: the IRS tool is for a domestic organisation with its principal place of business in the US or a US territory, and it requires the responsible party’s SSN or ITIN. If the application is approved, the EIN is issued online and the confirmation letter should be printed or saved.
- International telephone: the SS-4 instructions reserve this route for applicants without a US legal residence, principal place of business, or principal office or agency. The caller must be authorised and able to answer the Form SS-4 questions.
- Fax: the current instructions say a response is generally provided within four business days when a return fax number is supplied. This is an IRS indication, not a guaranteed service level.
- Mail: the IRS says to complete Form SS-4 at least four to five weeks before the EIN is needed. Postal and processing delays can extend the practical timeline.
Addresses, fax numbers, telephone availability and processing indications can change. Confirm them on the current IRS Form SS-4 instructions immediately before submitting, and use only one method for the entity.
Illustrative route check for a UK-based founder
Assume a UK-resident founder has formed a Delaware LLC, runs the business from the UK, and has neither an SSN nor an ITIN. The Delaware formation certificate does not by itself make the founder eligible for the IRS online tool because the actual principal place of business is outside the US. The founder should confirm whether “foreign” or “N/A” is appropriate on line 7b under the responsible-party instructions, then select one permitted international route.
This example does not decide whether the founder is ineligible to obtain an SSN or ITIN, how the LLC is classified for US tax, or which returns it must file. Those questions require the founder’s complete facts.
Prepare a short application brief
1. Entity identity. Put the approved legal name, formation date, state and formation documents together. Check them against the proposed application before anyone submits it.
2. Ownership and control. Draw a simple ownership chart and identify who actually controls the entity. Keep the applicant’s responsible party distinct from an adviser who is helping to complete the paperwork.
3. Addresses and activity. Record the correspondence address, actual operating location, business activity and expected staffing. Explain any difference between the registered-agent address and where the business operates.
4. Existing applications. Search the formation records and correspondence for an earlier EIN or pending application. Give the person coordinating the application a single record of what has already been submitted.
5. Filing plan. Ask which tax and information returns will follow, who will prepare them and who will receive IRS correspondence. Obtaining a number is only one step in maintaining the entity.
Connect the EIN to the next steps. Use the US incorporation checklist to assemble the formation, EIN and adviser handover record. If the entity is a foreign-owned single-member US LLC, also review the Form 5472 and pro forma Form 1120 guide so the EIN application is connected to the first-year compliance plan.
Keep the responsible party and representative separate
For an ordinary business application, the responsible party must be an individual with the relevant ownership or control. The SS-4 instructions define that role and the separate third-party designee arrangement. Giving an adviser authority to assist does not mean replacing the controlling individual with the adviser. IRS: Form SS-4 instructions.
Build an EIN confirmation and handover pack
Once the EIN is assigned, do not hand over only the nine-digit number. Create one controlled file containing:
- the state formation document and the exact legal name used;
- a copy of the completed and signed Form SS-4 as submitted;
- the application method, submission date and proof of transmission or mailing;
- the IRS assignment or confirmation notice actually received;
- a check of the legal name, mailing address and responsible-party details against the application;
- the person responsible for monitoring IRS correspondence and keeping the address and responsible party current; and
- a first-year filing calendar prepared from the entity’s tax classification, ownership, activities and payroll position.
Practical handover check: ask the founder, accountant and registered-agent provider to confirm which documents each holds and who receives federal and state notices. Store the EIN file securely and share it only with people or institutions that have a genuine need for it.
Agree the cost and the next step
The IRS does not charge to issue an EIN. Any fee paid to an adviser should be clearly identified as a professional service fee with an agreed scope. IRS: getting an EIN directly.
KBA offers ITIN and EIN application support alongside its US company incorporation service. To discuss your application, request a consultation with the entity’s formation status, ownership structure, operating location and the reason an EIN is needed. The IRS decides whether to issue the number; an application does not guarantee a bank account or determine the business’s tax treatment.