Form 5472 for Spain Residents With a US LLC
Spanish owners of US LLCs may need Form 5472 after owner transactions. See the NIF, treaty, deadline, and transaction rules.
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Last updated August 25, 2026
A Spain tax resident who wholly owns a US single-member LLC generally files Form 5472 with a pro forma Form 1120 when the LLC has a reportable transaction with the owner or another related party. Use the owner’s Spanish NIF as the FTIN and report owner funding and withdrawals separately from customer revenue.
The filing is an information return, not a calculation of Spanish or US income tax. A US customer, a US bank account, and a US LLC do not by themselves decide where the owner owes income tax.
If the LLC was funded, paid owner expenses, or returned money to Spain, start a reviewed Form 5472 filing before assuming that zero profit means zero filing.
When does a Spain resident’s US LLC file Form 5472?
A Spain-owned LLC generally files when it is a domestic single-member LLC disregarded for federal income-tax purposes, its sole owner is foreign for US tax purposes, and it had at least one related-party transaction during the year.
The IRS Instructions for Form 5472 include contributions, distributions, formation payments, dissolution payments, and other transactions with the foreign owner. The IRS states that failure to file a timely and substantially complete form can trigger a $25,000 penalty per form, per year.
| LLC event | Form 5472 treatment | Typical record |
|---|---|---|
| Owner pays the state formation fee | Owner-funded formation transaction | Receipt and formation invoice |
| Owner wires EUR to the LLC | Capital contribution | Bank transfer and exchange-rate record |
| LLC sends cash to the owner in Spain | Distribution | Bank statement and owner ledger |
| Spanish client pays an invoice | Third-party customer revenue, not an owner transaction | Invoice and sales ledger |
| LLC pays the owner’s Spanish company | Related-party payment | Contract, invoice, and separate Form 5472 analysis |
Gross related-party movements should not be netted. A $5,000 contribution and a $2,000 distribution remain two reportable movements even though the owner’s net funding is $3,000.
What Spanish tax number goes on Form 5472?
Use the actual Spanish NIF belonging to the individual owner on Part II line 4b(3). Spain’s Agencia Tributaria explains that an individual’s NIF is generally the DNI number for a Spanish national or the NIE for a foreign national.
| Form 5472 field | Spain-resident individual |
|---|---|
| 4b(1) US identifying number | Existing SSN or ITIN, if any; do not obtain an ITIN solely for Form 5472 |
| 4b(2) Reference ID | LLC-created alphanumeric ID when line 4b(1) is blank; reuse it every year |
| 4b(3) FTIN | Spanish NIF, commonly based on DNI or NIE |
| 4a owner address | The owner’s real Spanish address, not the LLC’s registered-agent address |
An NIF and a reference ID serve different fields. Providing the NIF does not eliminate the reference-ID requirement when no US identifying number appears on line 4b(1). Our FTIN and reference-ID guide explains the distinction.
Does the US-Spain tax treaty remove Form 5472?
No. The US-Spain income tax treaty can affect whether particular US-source income is taxable, but it does not cancel the LLC’s section 6038A information reporting.
The IRS maintains the current US-Spain treaty documents. Treaty relief depends on the owner’s tax residence, income type, US activity, and whether the required position is claimed. Form 5472 remains a separate disclosure of related-party transactions.
For service income, the IRS generally sources personal services where the work is physically performed. A consultant working entirely from Spain often has foreign-source service income, while US workdays, a US office, inventory, employees, or a dependent agent can change the result. Read whether a foreign-owned LLC pays US tax for the two-track analysis.
Spanish tax treatment is also separate. A Spanish adviser should analyze whether Spain treats the US LLC as transparent or as a foreign entity, how worldwide income is reported, and whether information reporting applies locally.
How do Spain owners prepare the filing package?
- Confirm the entity classification. The streamlined package applies to a foreign-owned domestic disregarded entity, not a multi-member partnership or an LLC that elected corporate treatment.
- Reconcile owner and related-party activity. Separate customer revenue and ordinary supplier costs from contributions, distributions, loans, reimbursements, and related-company payments.
- Convert euro amounts to US dollars. Record the transaction date, original EUR amount, rate source, rate used, and resulting USD amount.
- Complete the pro forma Form 1120 and Form 5472. Write “Foreign-owned U.S. DE” across the Form 1120 and attach the required Part V statement.
- Sign and file by the deadline. A calendar-year 2026 package is generally due April 15, 2027, or October 15, 2027 after a timely Form 7004 extension.
- Keep the exact filed copy and delivery evidence. Foreign-owned disregarded entities cannot e-file this package; the IRS instructions provide the dedicated fax and mailing routes.
Form5472 Prep prepares the pro forma Form 1120, Form 5472, and supporting statement, arranges accountant review, faxes the signed package to the IRS, and returns a timestamped receipt.
Frequently asked questions
Does a Spain resident need an ITIN for Form 5472?
No. A foreign owner does not need an ITIN solely to complete Form 5472. Use an existing US number if the owner already has one, otherwise provide a consistent reference ID and the Spanish FTIN.
Is a Spanish NIF the FTIN on Form 5472?
Yes. For an individual, the Spanish NIF—generally based on the DNI or NIE—is the foreign tax identification number normally entered on Part II line 4b(3).
Are payments from US customers reported on Form 5472?
Ordinary customer payments are not reportable merely because the customer is American. Form 5472 focuses on transactions between the LLC and its owner or another related party.
Does no US income tax mean no Form 5472?
No. Income-tax liability and information reporting are separate. A Spain-based owner can owe no US federal income tax yet still file Form 5472 because of a contribution, distribution, loan, or owner-paid cost.
Can a Spain-owned LLC e-file Form 5472?
Not when it is a foreign-owned US disregarded entity using a pro forma Form 1120. The IRS requires that package to be faxed or mailed to the dedicated Ogden PIN Unit.
A Spain owner should reconcile the NIF, reference ID, and gross related-party ledger before filing. Start the reviewed Form 5472 package, or first review the Form 5472 filing checklist.