Qualifying for IFICI as a self-employed or business-income professional often means operating through a Portuguese company rather than as an individual, since that’s how the qualifying income is typically structured and invoiced. For Americans, that company is usually a Lda., and forming one carries a separate consequence that tends to get far less attention than the IFICI application itself: an annual Form 5471 filing obligation.
The IFICI side of that decision gets most of the attention during relocation planning. The Form 5471 side is usually discovered later, often at tax time, once the company already has a full year of activity behind it.
Less often explained is just how demanding that form actually is once it’s triggered.
One of the Most Time-Intensive Individual Filings in the Tax Code
Form 5471 is routinely cited by practitioners as one of the most burdensome individual filings in the entire U.S. tax code, and the IRS’s own numbers back that up. The agency’s published burden estimates put average preparation time at roughly 38 hours, separate from an estimated 82.5 hours of recordkeeping and another 16 hours just learning the form and its instructions. That is before accounting for the underlying bookkeeping the filing depends on.
Most of that burden traces to the form’s structure rather than to any single hard calculation. Depending on the filer’s category (generally Category 4 or 5 for someone who owns 10% or more of a Portuguese company that qualifies as a controlled foreign corporation), the return can run to more than a dozen separate schedules, covering the entity’s financials, its earnings history, related-party transactions, and a GILTI/NCTI computation layered on top. A single-member consultancy with modest revenue works through the same schedule set as a larger operation. Size reduces the volume of transactions involved, not the number of schedules or the hours behind them.
Documents to Gather
Preparers typically ask for:
— Full financial statements for the year (balance sheet and profit and loss), ideally already reconciled rather than reconstructed from a bank export
— The commercial registry extract (certidão permanente) and articles of association, along with the quota ownership breakdown and the date of any change in ownership percentage during the year
— A record of transactions between the company and its owners: loans in either direction, management fees, reimbursed expenses, intercompany invoices
— Portuguese corporate tax returns (Modelo 22) and proof of tax paid, which feed both the foreign tax credit calculation and the high-tax exception analysis
— Payroll records, where the company has employees or the owner takes a salary through it
— The prior year’s Form 5471, where one exists, since several schedules carry forward balances year to year
Gathering this is typically the slower part of the process. Bookkeeping kept current throughout the year, rather than reconstructed at filing time, tends to move through preparation noticeably faster.
What It Tends to Cost
Pricing varies by preparer and by how clean the underlying records are, so any figure should be read as a general range rather than a quote. At the simpler end, flat-fee firms advertise around $700 to $800 for a single, straightforward filing with no GILTI or NCTI computation attached. Adding that computation, which most owner-operators need, typically adds a few hundred dollars as a separate line item.
A fuller Category 4 or 5 filing, with translated financials, an earnings and profits computation, a related-party transaction schedule, and the GILTI/NCTI calculation, more commonly falls in the $1,500 to $5,000 range for a single entity with one clean year of activity behind it. Complexity, rather than company size, is what moves the number. Multiple related-party transactions, a change in ownership percentage during the year, or payroll run through the company each add schedules and time.
First-year or catch-up filings, where prior years were never filed and need to be reconstructed, cost meaningfully more, often with several years billed together at a reduced per-year rate.
Finding (or Vetting) a Preparer
Not every tax preparer handles this form, and a general preparer without international experience can misapply filer categories or the earnings and profits mechanics in ways that are costly to unwind later. Questions worth asking before engaging someone:
— Can the preparer speak specifically to which schedules apply to the relevant filer category, rather than simply confirming the form is handled
— Has the preparer completed returns involving an actual GILTI/NCTI computation, not only the informational schedules
— How would the preparer approach a first-year filing where prior records are incomplete, where that applies
The purpose of this kind of conversation is not to interrogate a preparer. It’s to confirm the specific competency the form requires, which is narrower than general cross-border tax experience.
Areia Global’s tax return program coordinates both U.S. and Portuguese filings for Americans living in Portugal, with particular attention to the entity-level complexity, including Form 5471 and GILTI/NCTI, that comes with owning a Portuguese business. Registration for the 2026 program opens this month; readers can sign up for early access and pricing →.
This article is for general informational purposes only and does not constitute legal or tax advice. Every situation is different; readers should consult a qualified advisor before making decisions based on the information above.
Advisory and consulting services provided by Areia Global Consultants Lda. U.S. legal services provided by Areia Global Legal Advisors. Portuguese law matters referred to qualified local counsel.