If you own a US single-member LLC and are not a US person, you may have a federal filing obligation even when the LLC earned no revenue, had no profit, and owes no US income tax. A foreign-owned US disregarded entity generally files Form 5472 attached to a pro-forma Form 1120.
For a calendar-year LLC, the standard deadline is April 15. Missing or substantially underreporting the filing can trigger a $25,000 penalty, so this is not a compliance task to postpone until your business becomes profitable.
Who Must File Form 5472 and a Pro-Forma 1120?
The rule generally applies when a US LLC has one owner, is treated as a disregarded entity for federal income tax purposes, and is wholly owned by a foreign person. The foreign owner may be an individual or a foreign company.
- US entity: Your LLC was formed under a US state’s law, such as Delaware, Wyoming, or Florida.
- Single owner: One foreign person directly or indirectly owns 100% of the LLC.
- Disregarded status: The LLC has not elected corporate taxation using Form 8832.
- Reportable transaction: The LLC had at least one transaction with its foreign owner or another related party during the tax year.
A typical example is a founder living outside the United States who creates a Delaware LLC, contributes $1,000 to open a Mercury account, pays the formation fee personally, and later withdraws funds. Even with $0 in sales, those owner-to-LLC transfers may create reportable transactions.
Form 5472 is an information return; it does not by itself calculate your income tax. It is also separate from possible personal filings such as Form 1040-NR, sales tax registrations, state annual reports, franchise taxes, and FinCEN obligations.
Why Zero Revenue Does Not Necessarily Mean No Filing
Many non-US founders assume that no revenue means no US tax return. For foreign owned LLC tax compliance, the key question is not only whether the LLC made money. It is whether the LLC exchanged money, property, rights, or services with a related party.
Your initial capital contribution can be enough. So can paying a registered-agent invoice, Stripe setup expense, or software subscription from your personal account on behalf of the LLC. A repayment from the LLC may be another reportable transaction.
An LLC with absolutely no transactions may not have a Form 5472 filing requirement for that year, but “no transactions” is narrower than “no revenue.” Formation costs and owner funding are commonly overlooked. Review the complete bank, card, and bookkeeping history before deciding that no filing is required.
What Counts as a Reportable Transaction?
Form 5472 covers many transactions between the LLC and a foreign related party. For a wholly foreign-owned disregarded entity, reportable amounts can include transactions that would not normally appear as taxable income or deductible expenses.
- Capital contributions or additional owner funding
- Distributions and withdrawals paid to the owner
- Loans made by the owner to the LLC, or by the LLC to the owner
- Loan repayments, interest, and related financing charges
- Sales, purchases, rents, royalties, commissions, and service fees
- Payment of LLC expenses from the owner’s personal account
- Reimbursement of expenses previously paid by the owner
- Transfers of property, intellectual property, or other rights
- Amounts paid or received during formation, dissolution, acquisition, or disposition
A related party can include the foreign owner, entities under common control, and certain family or business relationships. The applicable ownership and control rules are technical, especially when your LLC sits below a foreign holding company.
Keep evidence for each transfer: date, amount, currency, exchange rate, counterparty, business purpose, and whether it was equity, a loan, a distribution, or an expense reimbursement. Statements from Mercury, Wise, PayPal, Stripe, and business cards are useful, but they do not replace a properly categorized ledger.
Deadline, Extension, and the $25,000 Penalty
A calendar-year LLC generally files by April 15 of the following year. For example, the filing covering transactions from January 1 through December 31, 2025 is generally due April 15, 2026. If a due date falls on a weekend or legal holiday, the deadline moves under the normal IRS rules.
You can generally request a six-month extension by filing Form 7004 on time, moving an April 15 deadline to October 15. An extension gives more time to file, not more time to pay any tax that may separately be due.
The penalty for failing to file Form 5472 on time, or filing an incomplete or inaccurate return, generally starts at $25,000 per form, per year. If the failure continues for more than 90 days after an IRS notice, additional $25,000 penalties can apply for each 30-day period, or part of a 30-day period, that the failure continues.
Reasonable-cause relief may be available in limited circumstances, but it requires a fact-specific explanation and supporting records. “I had no revenue” or “I did not know about the form” is not a safe compliance strategy.
How to Prepare the 1120 Pro Forma and Form 5472
The LLC does not complete a normal corporate tax return unless it has elected to be taxed as a corporation. Instead, it prepares a limited 1120 pro forma as the cover return for Form 5472.
- Obtain an EIN for the LLC. An ITIN is not always required merely to obtain an EIN or file this information return.
- Reconcile all bank, card, and payment-processor activity for the tax year.
- Identify every foreign related party and collect its legal name, address, country, and US tax identification number or foreign tax identification number, where required.
- Classify and total reportable transactions by category rather than simply reporting the ending bank balance.
- Complete the relevant parts of Form 5472, including ownership and related-party transaction details.
- Prepare the limited Form 1120 cover pages required by the instructions and write “Foreign-owned U.S. DE” across the top.
- Attach Form 5472 to the pro-forma Form 1120 and have an authorized person sign the return.
Under current IRS procedures, a foreign-owned US disregarded entity cannot electronically file this special Form 5472 package. Submit it by fax or mail using the current address or fax number in the official IRS Instructions for Form 5472. Do not rely on an old blog post for filing coordinates because the IRS can change them.
Use a trackable courier or certified mail and retain the complete signed package, delivery proof, fax confirmation, and source records. Form 7004 has separate filing instructions, so do not assume it goes to the same destination.
Common Mistakes Non-US Founders Make
- Treating “no profit” as “no transaction”: Owner funding and startup expenses can still be reportable.
- Filing Form 5472 alone: A foreign-owned disregarded entity normally attaches it to a pro-forma Form 1120.
- Sending a full corporate return: The pro-forma return is not the same as electing corporate tax treatment.
- Using personal transfers without labels: Decide contemporaneously whether each transfer is equity, debt, reimbursement, or distribution.
- Ignoring foreign-currency records: Preserve the original amount and document a consistent conversion method to US dollars.
- Confusing federal and state filings: Delaware franchise tax, Wyoming annual reports, and state income or sales tax obligations have separate rules and deadlines.
- Assuming Stripe or Mercury handles tax filing: Payment and banking platforms provide transaction data; they do not prepare Form 5472 for you.
When to Hire a US CPA
Consider a US CPA or enrolled agent with international tax experience if the LLC received revenue from US customers, performed services while you were physically in the United States, hired US workers, sold inventory, owns intellectual property, changed owners, closed during the year, or has several related foreign companies. You should also obtain professional advice if you are unsure whether income is effectively connected with a US trade or business.
Professional help is especially important for late filings, prior-year omissions, IRS penalty notices, large owner loans, crypto transactions, or unclear transfers between personal and business accounts. Ask specifically whether the adviser handles foreign-owned disregarded entities, Form 5472, Form 1120 pro forma, Form 1040-NR, and state compliance; not every general accountant works in this area.
When Founder Portal Can Help
Work with Founder Portal when you need coordinated support for LLC formation, EIN, banking or Stripe readiness, bookkeeping setup, and referral to an appropriate US tax professional. For a late return, complex ownership, or an IRS notice, involve a qualified US CPA or tax attorney promptly.