Short answer
A registered agent's only job is to accept legal mail at a physical address in your LLC's state. It does not get you an EIN, and it has no role in your annual tax filings. Getting an EIN as a non-resident without a Social Security number, and filing Form 5472 each year, are separate tasks someone has to own.
Key takeaways
- A registered agent is a narrow legal role: accepting official mail and lawsuits at a physical address in your LLC's state. Getting an EIN is not part of that job.
- Non-residents without a Social Security number can still get an EIN, but the online tool is closed to them, so the application goes in by fax or mail on Form SS-4 and takes longer.
- Some formation services sell EIN help as a separate add-on, so confirm exactly what is included rather than assuming it comes bundled with the registered agent.
- A foreign-owned single-member LLC must file Form 5472 with a pro forma Form 1120 every year, even with zero activity, and the penalty for missing it starts at $25,000.
Search enough founder forums and you’ll find some version of the same question, asked by someone living outside the US who just decided to set up an LLC: is there one company that can handle the registered agent, the EIN, and the nonresident filings, all in the same place?
It’s a reasonable thing to want. It’s also a slightly wrong question, and the mix-up is worth untangling, because it’s the same mix-up that trips people up again in year two, usually right when a penalty notice shows up.
What a Registered Agent Actually Does
Here’s the confusion. A registered agent is a narrow, legally required role: a person or company with a physical address in the state where your LLC is formed, whose only job is to accept official mail and lawsuits on the LLC’s behalf and forward them to you. States require it because they need somewhere reliable to serve papers. That’s the whole job. It costs somewhere in the low hundreds of dollars a year, and most of them are, by design, a mailbox with a subscription attached.
Why an EIN Is a Different Problem for Non-Residents
An EIN is a different animal entirely. For a US citizen with a Social Security number, getting one online takes about fifteen minutes on the IRS site. For a non-resident with no SSN and no ITIN, that online tool isn’t available at all, and the application has to go in by fax or mail, on paper, with the “responsible party” line filled out by hand instead of auto-validated against a Social Security database. Processing has run anywhere from a couple of weeks to a couple of months depending on the season, and there’s no dashboard to check on it. It’s not that a non-resident can’t get an EIN. It’s that the path is slower, paper-based, and a little unforgiving of small formatting mistakes on the form.
Some formation services and registered agents do offer to help with this, as an add-on layered on top of the base registration: filling out the SS-4, faxing it, following up with the IRS. That’s a real and useful thing to pay for. But it’s not inherent to being a registered agent. It’s a separate skill the company chose to build, and it’s worth asking about directly instead of assuming it comes bundled in.
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The Filing That Costs Money Later: Form 5472
Then there’s the part almost nobody asks about up front, which is usually the part that actually costs money later. A foreign-owned, single-member LLC in the US is required to file Form 5472 along with a pro forma Form 1120, every year, even if the LLC did absolutely nothing that year. This is one of the few corners of the tax code where “zero activity” isn’t an excuse to skip filing. It’s arguably the whole reason the form exists, to keep the IRS aware of who’s behind quiet-looking LLCs. Miss it, or file it incomplete, and the penalty starts at $25,000. Not a percentage, not a fee scaled to income. A flat number, per form, per year.
The Real Question to Ask
So the real question isn’t whether one company can do the LLC, the EIN, and the filings together. Plenty can, as a bundle of separate services sold under one invoice. The real question is whether anyone in that bundle is going to remember the Form 5472 deadline next spring, after the setup excitement has faded and the LLC is just quietly sitting there. A registered agent renews itself automatically and forwards your mail. It has no opinion about your tax calendar. Somebody else needs to.
Not legal or tax advice, confirm with a CPA.
Frequently Asked Questions
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Published July 9, 2026
I'm Henry, a hedgehog in a bow tie who explains the dull, scary parts of building and running a U.S. business.
