Last reviewed October 7, 2026 · By the NYBACS advisory team
Short answer
Yes — in almost every year. Which return depends on how the IRS classifies the LLC: a single-member LLC owned by a non-US person files Form 5472 attached to a pro forma Form 1120; a multi-member LLC files Form 1065 as a partnership; an LLC that elected corporate treatment files a full Form 1120. The owner may also need a personal or corporate US return if the LLC earns US effectively connected income.
Key takeaways
- The LLC's federal filing follows its tax classification, not its legal form: disregarded entity, partnership or corporation.
- A single-member LLC owned by a non-US person files an information return (Form 5472 with a pro forma Form 1120), not an income tax return.
- A multi-member LLC with any foreign member is a partnership by default and files Form 1065, with Schedule K-1s for each member.
- Whether the foreign owner personally files Form 1040-NR or Form 1120-F is a separate question that turns on effectively connected income.
- State filings sit on top of the federal ones and depend on where the LLC is formed, registered and actually operating.
Start with the LLC's tax classification
An LLC is a state-law entity. The IRS does not have an "LLC return"; instead, it slots every LLC into one of three tax classifications, and the return follows from that choice.
| Ownership and election | IRS classification | Federal return filed by the LLC |
|---|---|---|
| One foreign owner, no election | Disregarded entity | Form 5472 attached to a pro forma Form 1120 |
| Two or more members (any nationality), no election | Partnership | Form 1065 with Schedule K-1s |
| Election on Form 8832 to be taxed as a corporation | C-Corp | Full Form 1120, plus Form 5472 if 25% or more foreign-owned |
The classification is visible on the IRS records created when the EIN was issued and in any later Form 8832 election. Before deciding what to file, confirm what the IRS actually has on file — founders are sometimes surprised to find that a formation agent ticked a box that does not match their intended structure.
Single-member LLCs: an information return, not a tax return
A disregarded LLC owned by one non-US individual or company does not calculate or pay US income tax at the entity level. Treasury regulations nevertheless treat it as a corporation for the narrow purpose of reporting dealings with its foreign owner, so it must file Form 5472 attached to a pro forma Form 1120 for any year in which it has a reportable related-party transaction.
In practice that means nearly every year, because funding the bank account, paying formation fees or taking money out all count. The pro forma filing is due on the corporate due date (April 15 for a calendar year), is extendable with Form 7004, and is faxed or mailed rather than e-filed. The heavy penalty for omitting it is what makes this the filing foreign founders most need to diarize.
Multi-member and corporate-elected LLCs file full returns
When an LLC has two or more members — for example, a founder and a co-founder, or a founder and their overseas holding company — it is a partnership by default. It files Form 1065, issues a Schedule K-1 to each member, and is due by the 15th day of the third month after year-end (March 15 for a calendar year). If the partnership earns effectively connected income allocable to a foreign member, it also has partnership withholding obligations under Section 1446.
An LLC that elected corporate status files Form 1120 like any C-Corp, computes tax at the 21% federal rate on its taxable income, and attaches Form 5472 when a foreign person owns 25% or more. Note that a foreign-owned LLC cannot elect S-Corp status: nonresident aliens and foreign companies are not eligible S-Corp shareholders.
The owner's own US return is a separate question
The LLC's filing and the owner's filing are frequently confused. For a disregarded LLC, the LLC's income belongs to its owner for income tax purposes. If that income is effectively connected with a US trade or business — for example, the owner has US employees, a US office or warehouse, or dependent agents concluding contracts in the US — the owner may need to file:
- Form 1040-NR if the owner is a non-resident individual, or
- Form 1120-F if the owner is a foreign company.
Where the LLC's work is performed entirely outside the US and it has no US place of business, the income may not be effectively connected, and the owner may have no US income tax return to file. A tax treaty can also change the result through its permanent establishment rules. This analysis depends heavily on facts — where services are performed, where contracts are signed, where inventory sits — and is worth reviewing with a qualified tax adviser each year rather than assuming last year's answer still holds.
Don't forget the state layer
Federal filings are only half the picture. The state of formation may impose an annual tax or report regardless of income — Delaware LLCs pay a flat annual tax, for example, and California charges a minimum franchise tax on LLCs registered or doing business there. A state where the LLC actually operates, hires or holds inventory may require registration and its own income, franchise or gross receipts filings. State rules also do not always follow federal treaty positions, so a company with no federal income tax can still owe state tax.
A simple calendar that lists every federal and state obligation, with due dates and who is responsible, prevents most of the problems we see.
Common mistakes to avoid
- Assuming "no US tax" means "no US return" for a single-member LLC owned from abroad.
- Filing Form 1065 for a single-member LLC, or a pro forma Form 1120 for an LLC that actually has two members.
- Adding a second member partway through the year without realizing the LLC has become a partnership for the rest of the year.
- Electing S-Corp status for an LLC with a non-US owner, which is not permitted.
- Treating the LLC's filing as covering the owner's own Form 1040-NR or Form 1120-F obligation.
- Ignoring state annual taxes because the LLC had no revenue.
Documents and records to prepare
- Certificate of formation and operating agreement showing members and ownership percentages
- EIN confirmation letter (CP 575 or 147C) and any Form 8832 or Form 2553 election acceptance
- Bank, fintech and payment-processor statements for the full year
- Details of where services were performed, contracts signed and any US staff, office or inventory
- Prior federal and state filings, if any
NYBACS 360° support
How NYBACS helps
- Confirms the LLC's federal tax classification from its formation documents and IRS records before anything is prepared.
- Maps the full filing set for the year — LLC return, owner's return questions and state obligations — into one calendar.
- Prepares Form 5472 with the pro forma Form 1120, or coordinates Form 1065 or Form 1120 preparation with licensed tax professionals.
- Flags facts that may create effectively connected income so the owner can obtain specific advice on a personal or parent-company return.
- Keeps year-round books so each return is built on reconciled numbers rather than reconstructed bank statements.
Frequently Asked Questions
My LLC has two owners but one is my spouse. Is it still a partnership?
Generally yes. A two-member LLC is a partnership by default, and the qualified joint venture election available to some married couples does not apply to businesses held through a state-law LLC. A narrow community-property exception exists, but it rarely fits non-US couples, so confirm the classification before filing.
Can I change my LLC's tax classification to make filing simpler?
An LLC can elect corporate treatment on Form 8832, and an eligible entity can sometimes change classification later, subject to timing limits. A change has real tax consequences — a C-Corp pays US corporate tax on its profits — so it should be driven by the business plan, not by which form looks easier.
Which IRS form tells me how my LLC is classified?
Look at the EIN confirmation letter (CP 575), any Form 8832 acceptance letter, and prior-year filings. If those are missing, the IRS can issue a Form 147C verification letter that shows the name and EIN on file, and a review of the formation history usually resolves the rest.
Does the LLC's state of formation change which federal return it files?
No. Federal classification and federal forms are the same whether the LLC is formed in Delaware, Wyoming, New York or elsewhere. The state affects annual state taxes and reports, not the IRS filing.
