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If you are a U.S. citizen and you open a Colombian S.A.S., the IRS almost always treats it as a foreign corporation that you control, which makes it a controlled foreign corporation, or CFC. That triggers Form 5471, an information return with a penalty that starts at $10,000 per form, per year. It is not only paperwork. As a CFC owner you can owe U.S. tax on the company’s profits through GILTI and Subpart F, even if you never take a distribution. The structure that makes business easy in Colombia is a serious filing on the U.S. side.
The S.A.S. is Colombia’s go-to business entity, quick to form and friendly to a single founder. Plenty of Americans use one to run a consulting practice, launch a startup, or support a visa. It is a sensible local choice, and the U.S. tax side is where it turns heavy. For the wider expat picture, see our guide to U.S. taxes for digital nomads and the tax issues of working remotely from Colombia.
Quick Facts for U.S. Owners of a Colombian S.A.S.
- A Colombian S.A.S. is generally a foreign corporation for U.S. tax purposes.
- If you control it, it is a controlled foreign corporation, or CFC.
- A CFC owner files Form 5471, with a penalty starting at $10,000 per form, per year.
- The statute of limitations on your whole return stays open until you file it.
- GILTI and Subpart F can tax you on company profits even with no distribution.
- A single-member S.A.S. can sometimes elect to be a disregarded entity instead.
Why Your S.A.S. Is Almost Always a CFC
By default, a Colombian S.A.S. is a foreign corporation in U.S. eyes, because its owners have limited liability. It becomes a controlled foreign corporation when U.S. shareholders who each own at least 10 percent together hold more than half of it. A solo American founder owning the whole company clears that bar instantly, which is why most expat S.A.S. owners are CFC owners and file Form 5471 without realizing it.
The classification follows from limited liability. A foreign company whose owners are shielded from its debts defaults to a corporation for U.S. purposes, and an S.A.S. fits that mold. Unless you make a specific election, your S.A.S. is a corporation first, and a CFC the moment U.S. owners control it.
| Sole U.S. owner | U.S. owners control it | U.S. owners are a minority | |
| Is it a CFC? | Yes | Yes | No |
| Measurement (the control test) | You own the S.A.S. | U.S. 10%-plus owners hold more than half | U.S. ownership is 50% or less |
| Likely U.S. form | Form 5471 | Form 5471 | Maybe Form 5471 for other reasons, or none |
| Tax on undistributed profit | GILTI and Subpart F apply | GILTI and Subpart F apply | Generally not, but confirm |
The gold row is the test. Whether U.S. owners control the company decides if it is a CFC, and that single fact drives both the form and the tax.
Form 5471 and the $10,000 Penalty
A CFC owner reports the company on Form 5471, filed with your income tax return. Skip it and the penalty starts at $10,000 per form, per year, with another $10,000 for each 30 days after the IRS sends notice, up to an additional $50,000 per form. Which schedules you complete depends on how the IRS categorizes you, and a form filed under the wrong category or missing schedules can be treated as if it were never filed at all.
The quieter danger is the statute of limitations. Until you file a required Form 5471, the clock on your entire tax return never starts, so every year you leave it unfiled stays open to IRS review indefinitely. That is what turns a missed form into a problem that grows rather than fades.
It Is Not Just Reporting: GILTI and Subpart F
Form 5471 is an information return, but owning a CFC also changes what you owe. Under the rules that come with a CFC, a U.S. shareholder can be taxed currently on the company’s earnings through GILTI and Subpart F, regardless of whether any money is distributed.
In plain terms, a profitable S.A.S. can generate U.S. tax even while the cash stays in Colombia. Individual owners face this at ordinary rates unless they make a Section 962 election to be taxed more like a corporation. This is why a CFC is a tax question, not only a filing question, and why the numbers should be run before the company starts making real money.
Picture an S.A.S. that nets a healthy profit and reinvests all of it locally. You took nothing out, yet a GILTI inclusion can still land on your U.S. return for that year. Owners who expected to be taxed only on what they distribute are the ones most often caught off guard.
The Check-the-Box Option and Its Trade-offs
A single-member S.A.S. can elect to be treated as a disregarded entity rather than a corporation. That moves you off Form 5471 and onto Form 8858, and in some situations it simplifies the picture. It is not automatically better, though. The election changes how income, losses, and future distributions are treated, and it can be hard to unwind, so it is a decision to make deliberately with the whole structure in view, not a shortcut to avoid a form. It also does not make the income disappear. A disregarded S.A.S. still flows its results onto your return, simply on a different form and under different rules.
How It Connects to Your Other Reporting
A company rarely sits alone. The S.A.S. will have its own Colombian bank account, and you will have personal ones, which can trigger the FBAR and Form 8938. If the company holds investments, the PFIC rules can overlap with the CFC rules, and your broader footprint may include local pension and cesantias accounts. One company can sit at the center of several filings.
If You Already Have an S.A.S. and Have Not Filed
Because the statute of limitations stays open, an unfiled Form 5471 keeps your exposure alive year after year, and the penalties stack. If that describes you, there is usually a way forward. Non-willful taxpayers can often catch up through Streamlined Filing, which folds the missing 5471s and the related tax into one coordinated submission rather than leaving each year hanging. Acting sooner also closes the open statute on those years, which is often the most valuable part of getting current.
Common Mistakes U.S. Founders Make
- Assuming a small local company has no U.S. side. A controlled S.A.S. is a CFC.
- Treating Form 5471 as optional because the company is tiny or made no money.
- Forgetting that the open statute of limitations keeps every year exposed until you file.
- Leaving profits in the company and assuming no U.S. tax. GILTI and Subpart F can still apply.
- Electing disregarded-entity status without understanding the trade-offs.
- Overlooking the company and personal bank accounts that trigger FBAR and Form 8938.
- Letting unfiled 5471s pile up while penalties and the open statute compound.
Own a Colombian S.A.S.? File Form 5471 the right way
Form 5471 is detailed, the schedules depend on your situation, and the GILTI and Subpart F math is unforgiving. Ed Parsons, CPA prepares Form 5471 for U.S. owners of Colombian companies and runs the tax side alongside it.Get help with Form 5471 CPA Filing
