What FATCA Is and Why It Decides Whether Your US Business Is Bankable

FATCA, the Foreign Account Tax Compliance Act, is the 2010 US law that requires financial institutions around the world to report accounts held by people with US tax obligations to the IRS. If you are an international founder, FATCA is not paperwork. It is the transparency system that decides how a US bank classifies you, whether your payments are hit with a 30% withholding, and whether your corporate structure reads to the financial system as credible or as suspicious.

Understanding FATCA before you open an account, take on investment, or expand operations in the United States is not optional. It is the difference between building a solid business asset and running a latent risk that surfaces later as frozen accounts, automatic withholding, and penalties that start at $10,000 USD.

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01What FATCA Actually Covers

FATCA is a US federal law, enacted in 2010, written to fight tax evasion by American taxpayers holding financial assets outside the country. It obliges foreign banks and financial institutions to identify and report to the IRS the accounts of "US persons," under threat of a punitive 30% withholding on their US source income.

In practice, FATCA built a global network for exchanging tax information. More than 110 countries, including Colombia, Mexico, Argentina, Chile, Spain and effectively all of Latin America, have signed Intergovernmental Agreements (IGAs) with the United States. That means the banks in your own country already report information to the IRS, and the US financial system assigns every account holder a tax classification from day one.

For an international founder, that carries two strategic consequences.

Your tax classification in front of US banks is either an asset or a liability. Classified correctly, through Form W-8BEN or W-8BEN-E, you operate without improper withholding. Classified incorrectly or incompletely, you trigger a 30% withholding, and the bank can close your account unilaterally.

Tax transparency also runs in both directions. Under reciprocal IGAs, the United States shares information back with the tax authority in your home country. Your US structure has to be consistent with your global tax position, not just with the paperwork sitting in a bank file in Miami.

02Who Has to Comply: Three Profiles Every Founder Should Tell Apart

FATCA creates different obligations depending on your profile. Foreign financial institutions have to report the accounts of Americans. "US persons" have to declare their foreign financial assets on Form 8938. Non-resident foreigners have to certify their status correctly with US banks in order to avoid withholding. Confusing the three is where most of the damage starts.

Profile 1: You Are a Non-Resident Foreigner With a US LLC or Corporation

This is the most common situation among Prodezk clients, and also the most misread. As a non-resident foreigner you are not required to file Form 8938, and you are not required to report the accounts you hold in your home country to the IRS. FATCA still reaches you, indirectly and continuously.

US banks will ask you for Form W-8BEN, if you are an individual, or Form W-8BEN-E, if you are certifying an entity, to establish that you are not a "US person." An error on that form can trigger an automatic 30% withholding on interest, dividends and other US source income.

Your bank at home can also ask you for FATCA declarations the moment it sees indicators of a US connection: a US address, a US phone number, recurring transfers. Answering those questions carelessly can produce incorrect reporting to the IRS in your name.

Profile 2: You Became a "US Person" Without Realizing It

This is the quiet risk. You are treated as a "US person" for tax purposes if you are a US citizen, if you hold a green card, or if you meet the substantial presence test, broadly speaking 183 days or more in the United States under the weighted formula that looks back over three years.

Plenty of founders who travel frequently to the United States to run their business cross that line without noticing. The moment they do, obligations appear that did not exist before: reporting worldwide income, filing Form 8938 if their foreign financial assets exceed the thresholds, and filing an FBAR if their accounts outside the United States add up to more than $10,000 USD.

Profile 3: Your Company Receives Payments From the United States

If your company receives payments from US clients or US platforms, whether the company is formed in the United States or abroad, the payer is required to document your FATCA status before releasing the money. Without correct documentation, the law requires that payer to withhold 30% of the payment. That is not a penalty. It is the default setting of the system.

03Form 8938: Reporting Foreign Financial Assets

Form 8938, the Statement of Specified Foreign Financial Assets, is how a "US person" reports financial assets held outside the United States to the IRS. It is filed together with the annual income tax return, once those assets pass the applicable threshold, which starts at $50,000 USD for people living in the United States.

The thresholds move with your situation:

• Situation: Value at year end: Maximum value during the year
• Single, living in the US: $50,000: $75,000
• Married filing jointly, living in the US: $100,000: $150,000
• Single, living outside the US: $200,000: $300,000
• Married filing jointly, living outside the US: $400,000: $600,000

One detail few advisors bother to mention: if you were required to file Form 8938 and did not, the IRS examination window on that return can stay open indefinitely with respect to the unreported assets. It is not simply a fine. It is giving up legal certainty over your tax years.

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04FATCA vs FBAR: Two Separate Obligations People Keep Confusing

FATCA, meaning Form 8938, and the FBAR, meaning FinCEN Form 114, are parallel and independent obligations. Form 8938 goes to the IRS with your income tax return and applies from thresholds of $50,000 USD upward. The FBAR is filed electronically with FinCEN and is triggered when your foreign accounts together exceed $10,000 USD at any point in the year. Meeting one does not excuse you from the other.

• Criterion: FATCA, Form 8938: FBAR, FinCEN 114
• Receiving authority: IRS: FinCEN, US Treasury
• Trigger threshold: From $50,000 USD, depending on profile: $10,000 USD aggregate
• Filed with: The annual income tax return: Separately and electronically
• Base penalty for failure to file: $10,000 USD: From $10,000 for a non-willful violation, and in willful cases up to 50% of the balance

A founder who becomes a US tax resident while keeping accounts back home can end up owing both reports in the same year. Filing one and forgetting the other is among the most frequent and most expensive compliance mistakes we see among Latin American business owners.

05What Noncompliance Actually Costs

The stated consequences of failing FATCA include an initial $10,000 USD penalty for not filing Form 8938, additional penalties of up to $50,000 USD for continued failure after the IRS notifies you, a 40% penalty on understated tax tied to undisclosed assets, and, for anyone operating through banks, automatic 30% withholding and account closure.

The most expensive part rarely shows up on a penalty table.

Your banking access is compromised. US banks close accounts with inconsistent FATCA documentation and are not obliged to explain themselves at length. Getting back into the US banking system after a compliance closure is significantly harder than opening the account correctly the first time.

Your tax record is contaminated. Investors, funds and buyers running due diligence look at whether the structure is fiscally coherent. A FATCA gap discovered during an acquisition audit can cut your valuation or kill the deal outright.

Your immigration position is exposed. For founders who want investor visas or residency down the line, a record of tax noncompliance with the IRS is exactly the history no immigration attorney wants to find.

Seen properly, FATCA is not a form you fill in. It is a layer of protection around the business asset you are building in the United States.

06How to Comply With FATCA Properly: A Four-Step Approach

Complying with FATCA takes four things, in order: establish your real tax status with respect to the United States, certify it correctly at every financial institution using the right W-8 or W-9, review each year whether you have crossed the Form 8938 and FBAR thresholds, and keep your corporate structure consistent with your global tax position.

Diagnose your tax status. Before any form, the question is whether or not you are a "US person." The substantial presence test, green card holding and hybrid corporate structures mean the answer is not always obvious. That diagnosis governs everything that follows.

Certify correctly with the bank. W-8BEN, W-8BEN-E and W-9 are not interchangeable. The right form, with the right entity classification and the right treaty benefits claimed, is what keeps the 30% withholding off your payments.

Monitor the thresholds annually. Form 8938 and FBAR thresholds are assessed for each tax year. A strong year, an asset sale or an inheritance can switch on obligations that simply did not exist twelve months earlier.

Keep the structure coherent. Your US LLC, your accounts at home and your tax residency all have to tell the same story to both jurisdictions. Inconsistencies are precisely what the FATCA information matching systems were designed to surface.

That level of work, determining status, applying treaties, structuring coherently across two jurisdictions, is where a strategic partner differs from someone who simply fills in forms. At Prodezk we help international founders build structures in the United States that hold up to scrutiny from banks, investors and tax authorities, because they were designed correctly from the start.

Are you opening operations in the United States, or has your bank already sent you a FATCA request? Book a consultation with our team and confirm your tax classification before a 30% withholding or an account closure confirms it for you. [Talk to a Prodezk advisor →]