Form 5471 for a Colombian SAS

Why a Colombian SAS is a U.S. tax landmine

U.S. citizens who relocate to Colombia routinely incorporate a Sociedad por Acciones Simplificada (SAS) — to invoice consulting clients, to operate an e-commerce business, to hold a Medellín or Cartagena apartment, or simply to obtain a NIT and open a Bancolombia business account. The SAS is fast to form, requires only one shareholder, and protects against personal liability. What almost no one explains at the Cámara de Comercio is that, the instant the shares are issued to a U.S. person, the entity becomes subject to one of the most complex information-reporting regimes in the entire Internal Revenue Code: Form 5471, Information Return of U.S. Persons With Respect to Certain Foreign Corporations.

The form is not optional. It is not triggered by income, profit, or distribution. It is triggered by ownership and control under IRC §6038 and Treas. Reg. §1.6038-2. A dormant SAS with no revenue, no employees, no bank account, and no clients still creates a filing obligation for its U.S. owner — and missing the filing carries a $10,000 minimum penalty per corporation per year, escalating to $60,000 after IRS notice, with the statute of limitations on the entire U.S. return held open indefinitely until the form is finally filed.

What is a Colombian SAS

The Sociedad por Acciones Simplificada was created by Ley 1258 de 2008 and has since become the dominant operating vehicle in Colombia, accounting for the overwhelming majority of new entity formations registered with the Cámaras de Comercio. It is a stock-based corporation that may be formed by a single shareholder, requires no minimum capital, and offers extreme statutory flexibility — single shareholder, plural shareholders, hybrid voting, restricted-transfer share classes, indefinite term — all without notarial intervention.

For U.S. federal tax purposes, however, the SAS is not flexible at all. Treas. Reg. §301.7701-2(b)(8) lists certain foreign business entities as per-se foreign corporations — meaning they are treated as corporations for U.S. tax purposes regardless of what their owners would prefer. The Colombian Sociedad por Acciones Simplificada appears on the per-se list as a corporation. The consequence is direct: an SAS cannot file Form 8832 ("check the box") to be treated as a disregarded entity or a partnership. Once formed, it is a foreign corporation, and the CFC machinery applies if a U.S. person owns enough of the equity.

Who must file Form 5471 — the five categories

The December 2025 Instructions to Form 5471 sort U.S. persons into five overlapping categories. Any single category triggers the filing; most U.S.-citizen SAS owners hit two or three categories simultaneously.

• Category 1 — A U.S. shareholder of a "specified foreign corporation" under IRC §965. This category exists mostly to capture post-TCJA transition-tax holdovers and remains relevant for legacy positions.
• Category 2 — A U.S. citizen or resident who is an officer or director of a foreign corporation in which a U.S. person acquires 10% or more of the stock (by vote or value) during the year. The classic Category 2 trigger for an SAS: a U.S. director when a co-investor crosses the 10% line.
• Category 3 — A U.S. person who acquires stock that crosses the 10% threshold, disposes of stock that crosses 10% downward, or first becomes a U.S. person while holding 10% of a foreign corporation. The year the SAS is formed by a U.S. citizen is almost always a Category 3 year.
• Category 4 — A U.S. person who had control (more than 50% of vote or value) of a foreign corporation for an uninterrupted period of at least 30 days during the corporation's annual accounting period. A 100%-owned SAS produces a Category 4 filing every year.
• Category 5 — A U.S. shareholder (10%+) of a Controlled Foreign Corporation (CFC) on the last day of the corporation's tax year in any year the corporation was a CFC. A 100%-owned SAS produces a Category 5 filing every year.

The typical U.S.-citizen sole-owner of a Colombian SAS therefore lands in Categories 4 AND 5 simultaneously, every year, for as long as the entity exists. In the year of formation, Category 3 is also triggered. If a U.S. co-shareholder later joins and crosses 10%, Category 2 activates as well.

Why a solo-owned SAS is always a CFC

A foreign corporation is a Controlled Foreign Corporation (CFC) under IRC §§957–958 when "U.S. shareholders" — defined as U.S. persons each owning at least 10% by vote or value — collectively own more than 50% of the corporation by vote or by value, on any day of the corporation's tax year. The statute uses constructive-ownership rules of IRC §958(b) that pull in family attribution and common-control attribution.

A U.S. citizen who owns 100% of a Colombian SAS is, by definition, a single U.S. shareholder owning 100% of vote and value. Every condition is satisfied: the SAS is a CFC for every day of every year. Even a 50/50 split between a U.S. citizen and a Colombian spouse still results in CFC status because the U.S. shareholder owns at least 10% and the corporation is U.S.-controlled when adding constructive ownership. The CFC label is sticky and very difficult to lose without either selling down below 10% to genuinely unrelated foreign owners or liquidating.

Subpart F income flow-through

Once the SAS is a CFC, Subpart F — codified at IRC §§951–965 — pulls "tainted" categories of CFC income into the U.S. shareholder's return annually, regardless of whether a single peso is distributed. The principal tainted buckets are foreign personal holding company income (FPHCI) — passive interest, dividends, rents, royalties, capital gains, and similar items — and foreign-base-company services and sales income when transactions touch related parties.

The SAS used as a real-estate holding vehicle is the textbook Subpart F trap. Rental income earned by the SAS is FPHCI under §954(c)(1)(A), includible by the U.S. shareholder on her current-year Form 1040, even when the SAS never distributes the rent and instead reinvests in property maintenance. The same is true for interest the SAS earns on a Colombian fiduciary deposit. Subpart F is computed on Schedule I and Schedule I-1 of Form 5471 and reported on Form 1040 Schedule 1.

GILTI becoming NCTI under OBBBA (2026)

If the SAS instead earns active business income — consulting revenue, software fees, e-commerce margin — Subpart F generally does not apply, but IRC §951A does. Section 951A, added by the 2017 TCJA, requires every U.S. shareholder of a CFC to include annually her share of Global Intangible Low-Taxed Income (GILTI), which is roughly the CFC's net tested income less a 10% return on its depreciable tangible assets (the "QBAI exclusion"). For tax year 2025, the regime works like this on a C-corporation shareholder:

• §250 deduction of 50% against GILTI inclusion, producing a 10.5% effective U.S. rate (21% × 50%).
• §960(d) foreign tax credit allowance of 80% of CFC-level foreign income taxes paid on tested income.
• Full offset (no residual U.S. tax) achieved when the CFC's effective foreign tax rate exceeds roughly 13.125%.

The One Big Beautiful Bill Act (OBBBA, Public Law 119-21, signed July 4, 2025) rewrites §951A for tax years beginning after December 31, 2025. The regime is renamed Net CFC Tested Income (NCTI) and recalibrated:

Two consequences matter for the Colombian-SAS owner. First, the QBAI exclusion is gone — a SAS that holds rental real estate or manufacturing equipment can no longer shield a 10% return on those assets from tested-income inclusion. Second, the effective rate rises from 10.5% to 12.6% at the C-corporation level, raising the foreign-rate threshold above which the foreign tax credit produces a clean wash.

The §962 election for individuals

Form 5471 must be filed by the individual U.S. shareholder, and the GILTI/NCTI inclusion lands on her individual Form 1040. Without intervention, the individual receives no §250 deduction (the deduction is reserved for C corporations) and no §960 foreign tax credit (likewise reserved for C corporations). The result is brutal: the full GILTI/NCTI inclusion is taxed at the individual's marginal rate, up to 37%, with no credit for the underlying Colombian corporate tax already paid by the SAS.

The §962 election is the standard countermeasure. It allows an individual U.S. shareholder to elect, on a year-by-year basis, to be taxed on her Subpart F and GILTI/NCTI inclusions as if she were a domestic C corporation. The election unlocks both the §250 deduction (50% in 2025; 40% in 2026 under OBBBA) and the §960(d) deemed-paid foreign tax credit (80% in 2025; 90% in 2026). Because the Colombian SAS pays Colombian corporate income tax at the 35% general rate, a properly elected §962 individual generally has full or near-full FTC offset, with little or no residual U.S. tax in the inclusion year itself.

The catch is timing. Under §962(d), when the previously-taxed earnings are eventually distributed from the SAS to the U.S. shareholder, the distribution is taxable again in the year of receipt, to the extent it exceeds the U.S. tax already paid under §962. The character of that second-layer tax depends on whether the dividend is a qualified dividend eligible for 20%-rate treatment. Qualified-dividend treatment requires either (a) a U.S. corporate payor or (b) a foreign payor in a country with a U.S. income tax treaty that the IRS has determined to be a "qualified" treaty under §1(h)(11)(C).

How the 35% Colombian rate interacts

Colombia's general corporate income tax rate sits at 35% for tax years 2024 through 2026 (Estatuto Tributario art. 240, as amended). With a few sectoral exceptions, the SAS pays 35% on its taxable income to the DIAN. From a U.S. perspective, 35% is comfortably above both the 2025 crossover rate of 13.125% and the 2026 NCTI crossover rate of 14%. A §962-electing U.S. shareholder of an SAS that earns active business income, taxed at 35% in Colombia, therefore expects:

• Tested-income inclusion equal to the SAS's net tested income (no QBAI shelter from 2026 onward).
• §250 deduction at 50% (2025) or 40% (2026).
• §960(d) deemed-paid credit for 80% (2025) or 90% (2026) of the Colombian tax allocable to the inclusion.
• Residual U.S. tax at or near zero in the inclusion year, because the deemed-paid credit absorbs the gross-up U.S. tax in full.

Without §962, however, the individual loses both the §250 deduction and the §960 credit. The full GILTI/NCTI inclusion becomes taxable at marginal rates up to 37%, with no offset for the 35% Colombian tax. This double-tax outcome is the single most common drafting error in U.S.-citizen Colombian-SAS structures and the reason the §962 election should be modeled before, not after, the first inclusion year.

Penalty schedule under §6038(b)

Failure to file Form 5471, or filing a substantially incomplete form, carries a stacked civil penalty regime under IRC §6038(b)–(c):

• $10,000 initial penalty per corporation per year for late or non-filed Form 5471.
• After the IRS issues a notice of failure, an additional $10,000 per 30-day period accrues, capped at $50,000 per corporation per year. Maximum civil exposure: $60,000 per missed form.
• 10% foreign tax credit haircut under §6038(c) — a 10% reduction of allowable FTCs on the related foreign corporation's income.
• Continuing failure adds 5% per 90 days of FTC haircut, up to a separate cap.
• Under IRC §6501(c)(8), the statute of limitations on the U.S. shareholder's entire return remains open until the Form 5471 is filed — and for three years after.

The assessability of these penalties was the subject of Farhy v. Commissioner, 160 T.C. No. 6 (2023), in which the Tax Court held that §6038(b) penalties are not "assessable" because no statute authorizes summary assessment. The D.C. Circuit reversed in May 2024, restoring the IRS's ability to assess §6038(b) penalties administratively without going to court. The reversal means the penalties operate exactly as Treasury intended — they can be assessed against the taxpayer's account on the IRS's initiative, leaving the taxpayer to pay first and litigate later.

Dormant SAS still triggers a 5471

The IRS does publish a "dormant foreign corporation" procedure (Rev. Proc. 92-70) that allows a streamlined summary filing for genuinely dormant entities — no income, no significant assets beyond minimal capital, no transactions during the year. The procedure is real and useful, but it is itself a filing. The form still goes in. Doing nothing remains the wrong answer.

Worked example — David in Bogotá

Facts. David is a U.S. citizen who moved to Bogotá in 2023 and crossed Colombian tax residency at 184 days during calendar year 2024. He formed David Consulting SAS in early 2024 to invoice a U.S. client base for SaaS implementation work, holds 100% of the shares, and serves as sole representante legal. For 2025, the SAS earns gross revenue of COP 800 million, deducts COP 200 million in employee, office, and software costs, has net taxable income before tax of COP 600 million, pays Colombian corporate income tax at 35% (COP 210 million), and retains net income after tax of COP 390 million (~USD 100,000 at COP 3,900). No dividends are distributed.

U.S. filings for 2025.

• Form 5471, Categories 4 + 5, with Schedules A (stock), B (U.S. shareholders), C (income statement), E (foreign taxes paid), F (balance sheet), G (other information), H (E&P), I (Subpart F summary), I-1 (GILTI inclusion), J (accumulated E&P), M (related-party transactions), P (PTEP), Q (CFC income by category), R (distributions).
• Form 8992, Computation of GILTI/NCTI for the U.S. shareholder.
• Form 8993, Computation of the §250 deduction (filed only if §962 election is made).
• §962 statement attached to Form 1040, electing C-corporation treatment for the year.
• Form 8938, FATCA disclosure of the SAS shares on Schedule B (foreign financial assets).
• FBAR (FinCEN 114) if the SAS's Bancolombia account had a high balance exceeding USD 10,000 and David had signature authority.

U.S. tax math with §962 election (2025). GILTI inclusion ≈ USD 100,000. §250 deduction at 50% ≈ USD 50,000. Net inclusion ≈ USD 50,000, taxed at 21% C-corp rate ≈ USD 10,500. Deemed-paid FTC: 80% × USD 53,800 (Colombian tax on tested income) ≈ USD 43,000, which fully absorbs the USD 10,500. Residual 2025 U.S. tax: zero.

U.S. tax math without §962 (2025). Full USD 100,000 inclusion at, say, 32% marginal rate ≈ USD 32,000. No FTC available against individual GILTI without §962. David is double-taxed roughly 67% (35% Colombia + 32% U.S. on already-after-tax earnings).

Cost of missing Form 5471. $10,000 initial penalty → notice → $50,000 continuation cap → $60,000 plus 10% FTC haircut, plus the entire 2025 Form 1040 SOL held open until David eventually files.

Planning checklist

• Decide on §962 before the first inclusion year. Model both with-and-without §962 across a multi-year projection that includes a planned distribution year. The absence of a U.S.–Colombia treaty makes the second-layer tax on distributions ordinary, not qualified — a permanent drag the model must capture.
• Track Colombian corporate tax paid by accounting period. The §960(d) deemed-paid credit requires evidentiary support for the foreign tax allocable to tested income. Keep the SAS's DIAN payment receipts (Formulario 110) organized by year.
• Reconsider the entity choice early. A Colombian Sociedad de Responsabilidad Limitada (Ltda.) is more flexible in some respects but generally appears on the per-se corporation list as well in the prevailing analysis under §301.7701-2(b)(8) — verify with U.S. counsel before relying on an Ltda.-plus-Form-8832 strategy. There is no Colombian vehicle that cleanly converts to a U.S. partnership through check-the-box without significant planning.
• File the dormant return even when nothing happened. Rev. Proc. 92-70 streamlined filing is faster and cheaper than the full schedule set. Filing it is mandatory; ignoring it is not an option.
• Match Form 5471, Form 8938, and FBAR. The same SAS appears on all three, with different thresholds and different penalties. A missed FBAR is its own willful-penalty regime entirely separate from §6038(b).