U.S. Tax for Brazilian Residents With U.S. Business Interests

Brazil and the United States have never concluded a comprehensive income tax treaty. Despite decades of on-and-off negotiation between the two governments, no such treaty has ever entered into force, which places a Brazilian resident with U.S. business interests in a materially different position from a resident of a treaty country such as Canada, the United Kingdom, or most of Western Europe. This is worth understanding precisely, because the practical effect is narrower than "everything is harder" and more specific than most Brazilian founders assume before they look into it.

What actually changes without a treaty

Two consequences follow directly from the absence of a treaty, and they are the same two consequences that apply to any non-treaty country. There is no treaty tie-breaker available to resolve U.S. tax residency where the substantial presence test under IRC §7701(b)(3) is met; the only route available is the closer connection exception, filed on Form 8840, which requires presence of fewer than 183 days in the current year specifically, a tax home maintained in Brazil for the year, and a demonstrable closer connection to Brazil than to the United States. And U.S.-source FDAP payments, dividends, interest, and most royalties paid to a Brazilian resident are subject to withholding at the full statutory 30% rate under IRC §871(a) and §881, collected at source under §1441 and §1442, because there is no treaty article available to reduce it the way there would be for a payment to a resident of a treaty jurisdiction.

It is worth noting what does exist between the two countries, because it is sometimes mistaken for more than it is. Brazil and the United States are parties to a Tax Information Exchange Agreement, in force since 2013, which allows the two revenue authorities to exchange information relevant to tax administration and enforcement. That agreement supports information sharing; it does nothing to reduce withholding rates, establish a permanent establishment standard, or provide a residency tie-breaker. A Brazilian resident should not read the existence of information exchange as evidence that treaty-equivalent relief is available somewhere in the relationship. It is not.

The permanent establishment gap

A treaty typically substitutes a permanent establishment standard, generally requiring a fixed place of business or a dependent agent habitually concluding contracts, for the broader domestic "engaged in a U.S. trade or business" test before business profits become taxable by the United States. Without a treaty, a Brazilian founder's U.S. entity is analyzed entirely under the domestic standard, built from decades of case law and regulatory guidance around whether U.S. activity is regular, continuous, and considerable, with no treaty-level threshold available as a backstop if the facts sit close to the line.

In practice, for a Brazilian founder running a U.S. entity with no U.S. office, no U.S. employees, and no one in the United States habitually concluding contracts on the company's behalf, this domestic analysis frequently reaches the same conclusion a treaty analysis would: no separately taxable U.S. trade or business beyond the entity itself. The difference is that a treaty-country founder has an additional, generally more concrete, layer of protection to point to if the facts are ambiguous, and a Brazilian founder does not.

Do the ordinary U.S. entity filings still apply?

Yes, entirely independent of treaty status, and this is a point worth stating clearly because it sometimes gets tangled up with the withholding question in a founder's mind. A U.S. entity that is more than 25% foreign-owned, or a wholly foreign-owned disregarded entity, owes an annual Form 5472 attached to a pro forma Form 1120 under IRC §6038A. The penalty for a missing or late filing is $25,000 under §6038A(d)(1), with an additional $25,000 for each 30-day period of continued noncompliance after IRS notice under §6038A(d)(2). None of this depends on whether Brazil and the United States have a treaty. A Brazilian-owned Delaware C-corporation and a Canadian-owned Delaware C-corporation file the identical Form 5472 on the identical schedule, with the identical penalty exposure for missing it.

A worked comparison

Take a Brazilian founder and a Canadian founder, each the sole owner of an identical Delaware C-corporation that earned $250,000 of net profit and distributed $120,000 as a dividend during the year.

Item	Canadian-resident owner	Brazilian-resident owner
Entity-level U.S. corporate tax	Same in both cases, under IRC §11	Same in both cases, under IRC §11
Form 5472 filing requirement	Applies regardless	Applies regardless
Dividend withholding rate	Reduced under the U.S.-Canada treaty	Full 30% under IRC §871(a) and §1441
Withholding on the $120,000 dividend	Materially less than $36,000	$36,000
Treaty residency tie-breaker available	Yes	No; closer connection exception only

The gap between the two owners opens entirely at the point money actually leaves the U.S. entity and reaches the individual owner. Everything upstream of that point, the entity's own corporate tax and its information filings, is identical.

The growing e-commerce and SaaS corridor from Brazil

A substantial and growing number of Brazilian founders operate U.S. entities selling software or e-commerce goods into U.S. and global markets, frequently choosing a U.S. entity specifically for access to U.S. payment processing, U.S. banking relationships, and the ability to contract with U.S. customers and platforms on straightforward terms. The core operating question for these founders is the same one any founder in this position faces: does the business have U.S. staff, U.S. office space, or a dependent agent habitually acting in the United States, and if not, the underlying business generally has no separately taxable U.S. trade or business beyond the entity's own corporate-level tax.

What is different for the Brazilian founder is entirely on the distribution side, not the operating side. A treaty-country founder in an otherwise identical position would generally see a reduced withholding rate on dividends paid out of the U.S. entity; a Brazilian founder does not have that option, and should build the full 30% rate into any planning around how and when profits are extracted from the U.S. entity, rather than assume a rate reduction that is not actually available.

Brazilian tax on the founder's own foreign company: a separate matter

Brazilian residents who own a foreign company, including a U.S. entity, may separately face Brazilian tax on that company's profits under Brazil's own rules governing foreign-held entities and offshore investments, which have been the subject of legislative change in Brazil in recent years, including rules affecting how Brazilian individuals are taxed on income and gains from entities held abroad. Whether and how those Brazilian rules apply to a specific founder's specific U.S. entity, including questions of accrual-basis taxation, controlled-entity treatment, and any exemptions or thresholds under Brazilian law, is a matter of Brazilian tax law entirely outside the scope of what this firm advises on. A Brazilian founder should raise this directly and specifically with a Brazilian-qualified tax adviser, ideally at the same time the U.S. entity is being structured, since the two systems are not coordinated by a treaty here the way they are for founders from many other countries on this list, and a structure that looks efficient from the U.S. side alone can create an unplanned-for result on the Brazilian side.

What travel to the United States changes

A Brazilian founder who travels frequently to the United States, for investor meetings, industry events, or direct oversight of U.S. operations, needs to track the day count under the substantial presence test carefully, because the absence of a treaty tie-breaker means the closer connection exception is the only available route if the threshold is approached, and that exception requires staying under 183 actual days in the United States in the current year specifically, in addition to the other conditions around tax home and closer connection. A founder who crosses that threshold in a single year has no treaty fallback to invoke afterward; the exception is unavailable once the current-year day count is exceeded, regardless of how the two prior years look under the weighted formula.

Entity choice matters more without a treaty behind it

A Brazilian founder deciding between a U.S. LLC and a U.S. C-corporation is making a decision that carries more weight than the identical decision would for a founder from a treaty country, because there is no treaty available to soften an unfavorable result either way. A single-member LLC that is disregarded for U.S. tax purposes generally passes its income through to the Brazilian owner directly, taxed under the FDAP or effectively-connected-income rules described elsewhere in this practice's material, with no intervening corporate-level tax and no separate dividend withholding step. A C-corporation introduces the two-layer structure illustrated above: corporate tax first, then full 30% withholding on whatever is actually distributed, with no treaty article standing by to reduce the second layer.

Neither structure is categorically correct. A founder who needs to raise U.S. venture capital will generally need a C-corporation regardless of the withholding consequence, since that is what U.S. investors expect to see. A founder running a bootstrapped SaaS or e-commerce business with no near-term fundraising plan has more room to weigh the LLC's simpler, single-layer tax result against the C-corporation's other advantages. What should not happen is choosing the entity type purely on formation cost or a template someone else used, without walking through what the choice means for a Brazilian owner specifically once profits are actually distributed.

FDAP against effectively connected income, applied to this fact pattern

The distinction between FDAP income, taxed on the gross amount at 30% at the point of payment, and effectively connected income, taxed on the net amount at graduated or corporate rates after a return is filed, is not itself changed by the absence of a Brazil treaty; the same distinction applies to a Brazilian resident as to anyone else. What changes is that a treaty would ordinarily have reduced the FDAP rate on payments that stay in that category, and no such reduction exists here. A Brazilian resident earning U.S.-source royalties for licensing software built and maintained entirely from Brazil, for example, generally receives FDAP treatment on that royalty income at the full 30% rate, with no treaty to bring it down, whereas the identical royalty paid to a resident of a treaty jurisdiction with a favorable royalty article might see a substantially reduced rate. Understanding which category a specific revenue stream falls into, and whether restructuring the underlying activity could shift it from FDAP to effectively connected treatment, is worth doing deliberately rather than assuming the default classification is the only available one.

What to check

Confirm the U.S. entity's Form 5472 and related information filings are current, since those obligations apply regardless of treaty status and carry a $25,000 minimum penalty for a missed year. Build the full 30% withholding rate into any plan for distributing profits out of a U.S. entity to a Brazilian owner, rather than assuming a treaty reduction that Brazil and the United States have never put in place. Track U.S. travel days against the substantial presence thresholds, with particular attention to the 183-day ceiling for the closer connection exception in any year meaningful U.S. time is planned. And raise the Brazilian side of the picture, how Brazil itself taxes a resident's ownership of a foreign company, directly with a Brazilian-qualified adviser rather than assuming the U.S. structuring analysis covers it, since this firm's guidance is limited to the U.S. side of that relationship.