How Long Does It Take to Get an EIN as a Non-Resident? (2026)

If you don't have an SSN or ITIN, you can't use the IRS's instant online EIN tool — the one that gives US applicants a number in about 15 minutes. Every non-resident founder applies through one of three slower channels instead, and the gap between the fastest and slowest of those channels is roughly a month.

This guide walks through the actual timeline for each method, what realistically slows a non-resident application down, and what to do while you wait.

The Three Methods, and How Long Each Takes

The IRS publishes these as its own stated timeframes for Form SS-4:

• Phone (international line) — same-day, often same-call. The only method that can produce an EIN in one sitting.
• Fax — officially "4 business days" from the IRS, but that's the IRS's internal processing target, not the time until you actually have the number in hand. The IRS's own internal guidance states the fax-back takes about 1 week if you include a return fax number, or about 2 weeks if you don't — and that's before accounting for the "current backlog" the IRS itself has acknowledged in 2025–2026, which can stretch it further.
• Mail — about 4 weeks officially, though the IRS's own Taxpayer Advocate Service has described the international mail/fax process as taking "four weeks or more" in practice.

Non-residents can use all three. The online tool is closed to you unless the responsible party has a US SSN or ITIN — it isn't a matter of preference.

Real-world experience adds one more variable worth knowing upfront: during heavy filing periods (roughly January–April), fax and mail turnaround both tend to run longer than even these figures. Build in buffer if you're applying during that window and have a deadline — a bank account opening, a Stripe application, a contract that requires a tax ID.

Which Method Should You Actually Use?

Match your situation to the closest scenario:

• "I need the EIN this week and can make an international call" → Phone. It's the only method that can close the loop same-day.
• "I can't call, but I have (or can get) a fax number" → Fax. Realistically about 1-2 weeks for the number to reach you (not the "4 business days" you'll see quoted everywhere), longer during backlog periods.
• "I have no fax access and no flexibility to call" → Mail, as a last resort. Budget a full month and don't plan around a hard deadline.
• "I'm applying in January–April" → Whichever method you pick, add a week or two of buffer. This is the IRS's heaviest filing season, and both fax and mail turnaround tend to stretch beyond the stated timeframe.

There's no version of this where paying more money buys a faster government timeline — the variables you actually control are which method you pick, how complete your SS-4 is, and whether you include a return fax number.

Phone: The Fastest Route, If You Can Call

The IRS runs a dedicated international line for exactly this situation:

• Number: 267-941-1099 (not toll-free — you'll pay international call rates)
• Hours: Monday–Friday, 6:00 AM–11:00 PM Eastern Time
• Who can call: the responsible party themselves, or someone formally authorized as Third Party Designee on the SS-4

This is the only method where you can walk away with an EIN in the same session. The trade-off is that you need your completed Form SS-4 in front of you before you dial — the IRS agent asks questions straight from it, and if the responsible party isn't the one on the call (or hasn't authorized a designee properly), the agent won't release the number.

Time zones matter more than founders expect. If you're calling from India, Pakistan, or the Philippines, the Eastern Time window lands in your late evening or overnight — workable, but worth planning around rather than discovering at 11:45 PM local time that the line just closed.

Fax: The Practical Default for Most Non-Residents

For most founders outside the US, fax ends up being the best balance of speed and practicality:

• Timeframe: the IRS's stated "4 business days" is an internal processing target, not delivery time. Its own internal guidance puts the fax-back at about 1 week with a return fax number, or about 2 weeks without one — and current backlog can add more on top.
• How it works: the IRS reviews the SS-4 manually, assigns the EIN, and faxes it back to the number you provided
• If you don't include a return fax number: turnaround roughly doubles — about 2 weeks instead of 1

Since actually owning a fax machine isn't realistic for most people in 2026, this usually means an online fax service (there are free and paid options) or a formation service handling the submission on your behalf. Either way, the return fax number is the detail that decides whether this method behaves like the fast option or the slow one.

Mail: Slowest, and Rarely the Right Choice

Mail is the fallback for the rare case where phone and fax both aren't workable:

• Timeframe: about 4 weeks
• Address: Internal Revenue Service, Attn: EIN Operation, Cincinnati, OH 45999, USA

There's no tracking system for pending EIN applications by mail. The IRS doesn't log an application on receipt — it only confirms an EIN once one has been assigned — so there's genuinely nothing to check on during that month. If you have any flexibility at all, phone or fax will get you further, faster.

What Actually Delays a Non-Resident's EIN

Most delays trace back to the form itself, not the method:

• Missing or ambiguous responsible party. The IRS requires an actual individual, not the LLC or a formation company, listed as responsible party. A business name here gets the application kicked back.
• No SSN/ITIN entry left blank instead of marked "Foreign." The SSN/ITIN field on Form SS-4 needs "Foreign" or "N/A" for a non-resident responsible party — leaving it empty is a common rejection trigger.
• No return fax number. Covered above — this alone roughly doubles the wait, from about 1 week to about 2.
• Entity name mismatches. If the LLC name on the SS-4 doesn't exactly match what was filed with the Secretary of State, expect a manual hold while the IRS reconciles it.
• Applying before formation is complete. The EIN application needs the LLC to legally exist first. Applying with paperwork still pending state approval is a frequent source of rejected or duplicate applications.

Duplicate applications specifically cause more harm than good — if you don't hear back within the expected window and resubmit instead of waiting, the IRS may end up processing two applications for the same entity, which creates its own cleanup problem.

After You Apply: The CP 575 and What to Do If It's Lost

Once your EIN is assigned, the IRS mails a confirmation letter — the CP 575 — to the address on file. This is the document banks and payment processors will often ask for as EIN proof, so it's worth saving both the physical copy and a scan.

If it's lost, misplaced, or never arrives, you don't need to reapply. Calling the IRS Business & Specialty Tax Line and requesting a Form 147C gets you an official replacement letter confirming the same EIN — this is the standard fix, and it's free.

Frequently Asked Questions

Can I speed up an EIN application by paying extra?

No — the IRS doesn't offer expedited processing for a fee. Services that charge for EIN help are charging for handling the paperwork and following IRS-required steps correctly (which does reduce delays caused by errors), not for jumping any queue.

Do I need the EIN before I can open a US bank account?

Generally yes — most banks and fintechs require an assigned EIN before opening a business account, since it's how the account gets tied to the entity for tax reporting.

Is the phone number a US-based service I can call for free?

No, 267-941-1099 is a standard US landline number, not toll-free. International call rates apply from your carrier.

What if the IRS asks for information I don't have on the call?

The agent works directly from your Form SS-4, so having a fully completed copy in front of you before dialing avoids most of this. If a question does come up you can't answer, they'll typically tell you what's needed to follow up rather than ending the process.

Information reviewed August 2026.

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