Disregarded for tax. Not disregarded for reporting.
For income tax, a single-member LLC owned by a non-US person is treated as if it does not exist. For information reporting, the IRS treats that same LLC as a corporation. How many members you have decides everything that follows.
Disregarded entity
Wholly owned by one non-US person. Ignored for income tax, so the results belong to you personally — but treated as a domestic corporation purely for information reporting.
Taxed as a partnership
Add a second member and the default classification changes entirely. A real partnership return is due, each member gets a K-1, and money leaving for a foreign partner may be withheld on at source.
The obligation follows ownership, not activity
Four things worth knowing before your first filing season.
Three stages, followed down both sides
Setup decides whether the rest goes smoothly. Annual reporting is where the penalty risk sits. Ownership and treaty position decide whether there is personal US tax on top.
Getting set up
One owner, one EIN, and an operating agreement that keeps the position clean. Nothing about the setup signals to anyone that two annual filings are coming.
Two or more members means a partnership from formation. Get the operating agreement and profit allocations right at the start rather than reconstructing them later.
Annual reporting
A pro forma Form 1120 carrying identifying information only. It exists to carry the Form 5472, not to report income the LLC owes no tax on.
Form 1065 with a Schedule K-1 to every member, due earlier in the year than the 1120 path. Form 5472 can still apply on top where a member meets the threshold.
Owner-level tax and treaty position
If the activity crosses into a US trade or business, the income is yours personally and a Form 1040-NR follows. Nothing is withheld at the LLC for you.
The partnership must withhold on effectively connected income allocable to a foreign partner, paid over during the year and reported on Forms 8804 and 8805.
Rental income, FIRPTA withholding and the net-basis election sit alongside the 5472 rules, not instead of them. That combination is handled by US Real Estate CPA — our property practice, and a Taxule firm.
The penalty is designed to be noticed
It applies whether or not any tax was owed — exactly the position a dormant foreign-owned LLC sits in.
Charged per form, per year, and uncapped. Several quiet years compound into a number that dwarfs anything the LLC earned.
The statute of limitations does not begin to run until the return is actually filed, so an unfiled year stays open indefinitely.
The filing is triggered by ownership, not by whether a reportable transaction ever happened.
Reasonable-cause relief exists, but the facts and the order you address them in change the outcome materially.
Before you file
My LLC had no transactions this year. Do I still file?
Yes. The filing requirement is triggered by ownership — a 25%-or-more foreign-owned disregarded entity — not by whether a reportable transaction happened. A year with nothing to report is still a year with a pro forma 1120 and Form 5472 due.
I added a second member. Does anything change?
A great deal changes. The LLC is no longer disregarded and is taxed as a partnership by default, which means Form 1065 and a K-1 to every member on a different deadline to the one you were used to. If any member is a non-US person, the partnership may also have to withhold on income allocable to them during the year rather than settling up afterwards. Tell us before you admit the member, not after.
Does opening a US bank account trigger anything extra?
Not on its own. Reporting follows ownership and activity, not where the account sits. The account itself does not create a new federal filing.
Does a tax treaty change any of this?
A treaty can reduce withholding on certain payments and affect whether income is taxed if it becomes effectively connected. It does not remove the Form 5472 filing, which is an information return that exists independently of any treaty position.
I have never filed and the LLC has been open for years. What now?
There are routes to come into compliance, and reasonable-cause relief can apply, but the facts and the order you address them in matter a great deal. Talk to us before filing anything retroactively on your own.
Tell us how the LLC is owned.
A short set of questions about ownership, activity and where you trade. We come back with a scope and a fixed price. If we are not the right firm for you, we will say so rather than quote for it.
Start scoping