US-Brazil Cross-Border Tax: Operating Without a Treaty

Today we're going to talk about one of the most misunderstood and potentially genuinely painful tax situations out there: the US-Brazil cross-border tax relationship. If you're an American investing in Brazil, a Brazilian with US assets, or anyone moving capital between these two countries, you've probably already discovered that there is no US-Brazil tax treaty. Two of the largest economies in the Western Hemisphere, billions of dollars flowing between them every year, and no comprehensive income tax treaty to smooth things out.

This creates a mess. Without a treaty to assign taxing rights or cap withholding rates, both countries essentially say "all of this income is ours" at the same time. The result? US-Brazil double taxation isn't just a theoretical risk. And with Brazil's massive 2026 tax overhaul now in effect (more on that in a moment), the cost of getting this wrong has increased.

Let's break it down.

Why There's No Treaty

People often assume this is some kind of bureaucratic oversight. On the contrary, the US and Brazil have fundamentally disagreed about how cross-border income should be taxed for decades, and neither side has been willing to blink.

Here's the core tension: the United States follows the OECD Model Tax Convention, which broadly favors residence-based taxation. In other words, the country where the investor lives should get the primary right to tax the income, and withholding taxes at the source should be kept low. This makes sense if you're a capital-exporting nation (hint: the US exports a lot of capital).

Brazil, on the other hand, has traditionally aligned with the UN Model Convention, which gives much stronger taxing rights to the source country, the place where the income is actually generated. Brazil wants to tax dividends, royalties, and service fees at higher rates before they leave the country. And the US Treasury has historically said: no deal.

But the biggest technical roadblock wasn't even philosophical. It was Brazil's transfer pricing system. For decades, Brazil used a completely unique system of fixed statutory margins for pricing transactions between related companies. The rest of the world (including the US) uses what's called the "arm's-length principle," which basically means related-party transactions should be priced as if the parties were strangers negotiating in good faith. Brazil flatly rejected this approach, and the US Treasury flatly refused to sign a treaty with any country that didn't use it.

Now here's where it gets interesting. In 2024, Brazil did a complete 180. Law No. 14,596/23 took full mandatory effect on January 1, 2024, aligning Brazil's transfer pricing rules with the OECD guidelines and the arm's-length principle. The single largest technical barrier to a treaty? Gone.

So are we getting a treaty soon? Don't hold your breath. A recent survey by the National Foreign Trade Council identified Brazil as the absolute highest priority for a new US tax treaty. But the US Senate is notoriously slow at ratifying these things. And the current administration in Brazil wants to tax everything that moves and won't make compromises on that. The US-Chile treaty is the only new one to be fully concluded in recent years. A US-Brazil treaty is unlikely before the end of the decade, or maybe even longer.

In the meantime, you're on your own so you need to understand how both systems work and plan accordingly.

How Income Gets Taxed in Both Countries

Without a treaty to draw clear lines, both the US and Brazil assert broad, overlapping claims over cross-border income. Both countries use a worldwide income taxation model, meaning both want to tax your entire global income regardless of where it was earned. This is where the pain starts.

The US taxes its citizens, Green Card holders, and resident aliens on their global income, no matter where they live or where the money comes from. You could be sitting on a beach in Copacabana earning rent from a property in Wyoming, and the IRS still wants its cut.

Brazil uses a more conventional residency-based system. If you're a tax resident, Brazil taxes your worldwide income. If you're not a resident, Brazil only taxes your Brazilian-sourced income.

Now I know what you're thinking. "I'll just avoid becoming a Brazilian tax resident." Not so easy. Brazilian tax residency kicks in the moment you enter with a permanent visa, or with a temporary visa and a local employment contract. And even if you're just visiting or working remotely, the clock is ticking. Spend more than 183 days (consecutive or not) in Brazil within any 12-month period, and congratulations, you're a Brazilian tax resident. Your entire global income is now subject to Brazil's progressive individual income tax (the IRPF), which tops out at 27.5%.

Let's say John, a software developer from Austin, decides to work remotely from Florianopolis for a few months. He's loving the lifestyle, extends his stay, and before he knows it, he's crossed the 183-day threshold. Now John owes Brazilian tax on everything, including his US salary paid into his Chase account in Texas. And he still owes the IRS too. Without treaty tie-breaker rules (the kind that would normally sort out who gets to call you "their" tax resident), John is a tax resident of both countries simultaneously. Both the IRS and Brazil's Receita Federal (RFB) expect a full return reporting worldwide income. This is no bueno.

Avoiding Double Taxation: Your Unilateral Options

Since there's no treaty to help, you have to rely on each country's domestic relief mechanisms. Not ideal, but it's what we've got.

On the US side, you have two main tools:

1. Foreign Earned Income Exclusion (FEIE): Under IRC Section 911, qualifying expats can exclude up to approximately $132,900 (projected for 2026) of foreign-earned income from US tax. But this only covers earned income (salaries, professional fees). Dividends, capital gains, rental income? Zero protection.

2. Foreign Tax Credit (FTC): Filed on Form 1116, this lets you offset your US tax liability dollar-for-dollar against income taxes already paid to Brazil. Since Brazil's top individual rate (27.5%) is often lower than the combined US federal and state rate, high earners will typically still owe something to the IRS. But here's a pro tip: for many expat families, skipping the FEIE entirely and relying only on the FTC is actually the better move. Why? Because the FTC offsets tax but keeps the income visible on your return, which lets you claim the refundable Additional Child Tax Credit (ACTC). That can mean thousands of dollars in direct refunds you'd otherwise leave on the table.

On the Brazilian side, the RFB operates a reciprocity framework. Even without a treaty, Brazil officially recognizes that the US grants reciprocal treatment to Brazilian taxes. So Brazilian residents can offset US federal income taxes paid against their IRPF liability. But you have to report meticulously through the Carne-Leao system (a mandatory monthly self-assessment for foreign-sourced income) and reconcile everything in the annual DIRPF filing.

For corporate structures, things got significantly tighter in January 2026. The RFB published Interpretative Declaratory Act (ADI) No. 1/2026, which limits how Brazilian parent companies can use US tax credits. Those credits can now only offset IRPJ and CSLL to the exact extent they correspond to the specific subsidiary's profit inclusion. You can't use them to offset other federal taxes or monthly estimated payments. This effectively traps excess foreign tax credits on the balance sheet.

The 2026 Dividend Bombshell

And now for the biggest change in a generation. From 1996 through the end of 2025, Brazil did not tax corporate dividends (partially because it had some of the highest corporate tax rates). This was a decent incentive for foreign investment and one of the main reasons US capital flowed so freely into Brazilian operations. Thanks to Lula and Haddad, that party is now over.

Law No. 15,270/2025 took effect on January 1, 2026, and reinstates a 10% Withholding Income Tax (IRRF) on profits and dividends. For non-residents (that includes US parent companies), it's a flat 10% on all dividends, regardless of amount. For Brazilian resident individuals, the 10% kicks in when monthly dividends from the same entity exceed BRL 50,000.

Let's do the math. Brazil's combined corporate tax rate (IRPJ + CSLL) is already 34% for most companies (and up to 45-50% for financial institutions). Apply the new 10% withholding to the remaining 66% of post-tax profits, and your effective tax rate on fully repatriated earnings jumps from 34% to roughly 40.6%. And because there's no US Brazil tax treaty to cap withholding at 5% or 0% (as most OECD treaties do), US investors eat the full 10%.

One critical note: profits generated through the end of 2025 are grandfathered. They remain exempt from the new 10% tax, but only if the distribution was formally approved by the corporate board by December 31, 2025. The actual cash payment can be deferred until December 31, 2028. If your Brazilian entities didn't pass those board resolutions in time, that exemption is gone forever.

The Totalization Agreement

Here's a bright spot (yes, there is one). While the US and Brazil never agreed on income taxes, they did manage to negotiate a Bilateral Social Security Agreement (a Totalization Agreement). This one actually works well.

Without it, someone working in the US-Brazil corridor would pay social security taxes in both countries on the same earnings. US FICA contributions total 15.3% (split between employer and employee). Brazil's INSS contributions range from 7.5% to 14% for employees, with an employer contribution of 20% on top. Paying both would be brutal.

The agreement fixes this. If you're sent by your employer to work in the other country for five years or less, you stay covered by your home country's system only. You'll need a formal Certificate of Coverage from your home social security agency to prove it.

For self-employed individuals (freelancers, consultants, digital nomads), you're generally covered only by the country where you legally reside. So if John from our earlier example goes fully self-employed while living in Rio de Janeiro, he'd be under the Brazilian INSS system. To avoid also paying US SECA tax on his worldwide self-employment income, he needs to get a certificate of coverage from the Brazilian Social Security Agency (APSAIBH in Belo Horizonte) and attach it to his Form 1040 every single year.

The agreement also lets you combine work credits from both countries to qualify for retirement benefits. The US requires up to 40 quarters (10 years) for full retirement benefits. Brazil requires 180 months (15 years) of contributions. Under the totalization agreement, each country will count the other's credits toward their minimum thresholds. (Fun fact: Brazil pays 13 benefit installments per year instead of 12, thanks to the mandatory "13th salary" tradition.)

FATCA/CRS Implications and Central Bank Reporting

If you're thinking "no treaty means less scrutiny," think again. The information-sharing apparatus between the US and Brazil is massive, and it catches people every single year.

Brazil has a Model 1 Intergovernmental Agreement with the US for FATCA compliance. In practice, this means every Brazilian financial institution systematically identifies US account holders and automatically reports their balances, interest, dividends, and gross proceeds to the US Treasury via the RFB. And hint: all money transfers in any major currency are extraordinarily easily traceable and flaggable. The idea that you can quietly move money between these two countries without anyone noticing is marketing fantasy.

On the US reporting side, if the aggregate maximum value of all your foreign financial accounts exceeds $10,000 at any point during the year, you must file an FBAR (Form 114) with FinCEN. If your specified foreign financial assets exceed higher thresholds (e.g., $200,000 on the last day of the tax year for expats), you also owe IRS Form 8938. The penalties for getting this wrong are serious:

• Non-willful FBAR violations: $10,000 per account
• Willful FBAR violations: the greater of $100,000 or 50% of the account balance
• Form 8938 failures: $10,000 immediate penalty, scaling up to $50,000

These are not theoretical numbers, anon. The IRS enforces them.

On the Brazilian side, residents holding foreign assets must also deal with the Central Bank's DCBE (Declaracao de Capitais Brasileiros no Exterior), which is completely separate from income tax filings. If your foreign assets total USD 1,000,000+ as of December 31, you file annually. If they exceed USD 100,000,000, you file quarterly. BACEN fines for non-compliance range from BRL 2,500 to BRL 250,000.

And starting in 2026, Brazil's Central Bank rolled out comprehensive regulations for crypto and virtual assets (Resolutions BCB No. 519, 520, and 521). Cross-border crypto transfers, stablecoin payments to foreign entities, even transfers to self-custody wallets are now classified as regulated foreign exchange activity. Starting May 2026, authorized crypto exchanges transmit continuous data to BACEN. The days of pseudo-anonymous cross-border crypto remittances in Brazil are over.

Structuring Strategies

Because an entity's tax classification in the US doesn't dictate its treatment in Brazil (and vice versa), standard US tax strategies frequently blow up at the Brazilian border. For a comprehensive look at how to structure your corporate entities for cross-border operations, proper planning before you deploy capital is everything.

The US LLC Trap

This is one of the most common and most dangerous mistakes I see. A Brazilian tax resident sets up a US LLC, often on the advice of a US-only advisor, thinking they'll enjoy the pass-through treatment and possibly even 0% US tax on non-US income.

In the US, a single-member LLC is a "disregarded entity." The IRS ignores the corporate shell and taxes everything directly to the owner. Beautiful, right?

Brazil doesn't care. The RFB (via Tax Directive No. 1,520/2014 and multiple subsequent rulings) treats a US LLC as a fully separate, opaque foreign corporation. Period. This triggers Brazil's aggressive CFC (Controlled Foreign Corporation) rules, which require the annual full-inclusion of the foreign entity's profits in the Brazilian owner's taxable income. Not when you take a distribution. Not when you repatriate. On December 31 of every year, the full net profit is taxed to you in Brazil, even if the money is sitting in a Chase bank account in Delaware completely untouched.

If you fail to report this, you're looking at infraction notices, compounding fines, and under the new Supplementary Law No. 225/2026 (the Taxpayer Defense Code), debts exceeding BRL 15 million can get you classified as a "Strategic Tax Defaulter", which effectively freezes you out of tax benefits, government contracts, and judicial protections. (Less than ideal)

Brazilian Holding Company

So what does all of this mean for you? How do you actually structure things to work within the 2026 rules? The Brazilian Holding Company (structured as a Sociedade Limitada or Sociedade Anonima) has become the go-to defensive structure for inbound US capital.

For real estate: Holding properties directly as an individual subjects rental income to the progressive IRPF (up to 27.5%). By placing properties in a holding company under the Lucro Presumido (Presumed Profit) tax regime, the RFB presumes a fixed profit margin (typically 32% for rental income) and taxes only that presumed margin. The effective rate drops to roughly 11-15% on gross revenue. Plus, the corporate shell protects you from direct personal liability in Brazil's notoriously litigious legal environment.

For mitigating the dividend tax: Here's the key. Law 15,270/2025 preserved the tax exemption for dividends distributed between Brazilian legal entities. Dividends flowing from an operating subsidiary up to a Brazilian holding company are completely tax-free. The 10% withholding only triggers when capital is actually repatriated to the US parent. This gives you full control over the timing of your cross-border tax hit. You can reinvest, acquire, or simply hold capital within Brazil without touching the 10% wall.

For the transition: If your entities properly declared all historical retained earnings as dividends before December 31, 2025 (even without immediate cash settlement), those distributions are permanently grandfathered. The actual cash remittance can happen any time before December 31, 2028, completely bypassing the 10% tax. If you missed that window, those accumulated profits are now permanently behind the tax wall.

As you can see, the US-Brazil corridor is one of the hardest cross-border tax situations you'll deal with, and 2026 has made it substantially more expensive and more scrutinized. The lack of a US Brazil tax treaty means you can't rely on the safety nets that most major economic relationships provide. Every dollar of cross-border income needs to be mapped against two aggressive worldwide tax systems, two separate reporting regimes, and an increasingly airtight information-sharing apparatus.

That's it for today. If you're operating in this corridor, the worst thing you can do is assume your US advisor understands Brazil or your Brazilian advisor understands the US. You need both, working together, before capital moves. Get it right from the start and you'll save yourself a world of pain down the road.