Global dollar account: what it is, how it works, and how to open one in Brazil

You get paid in dollars — or you want to — and one idea seems obvious: why convert everything to reais on the spot, when I could keep the money in dollars and decide later? That is where the search for a “global dollar account” comes from. The promise is good: dollars that stay dollars. But what actually exists behind that phrase comes with rules, costs, and obligations that almost never show up in the ad.

This guide is the honest map: what a dollar account within reach of someone living in Brazil really is, the two ways to have one (inside and outside the country), what you take on by holding a balance in foreign currency, and how to open yours without discovering the cost only at the end. Whenever there is a rule, it comes with the official source next to it.

What a “global dollar account” actually is

In practical terms, it is an account that lets you receive, hold, and spend in dollars (sometimes in other currencies too) without being forced to convert to reais on every transaction. Dollars come in and stay in dollars until you decide otherwise. That solves a real annoyance: anyone with income or expenses in foreign currency does not want to be at the mercy of the day’s rate on every conversion.

But “global dollar account” is a marketing name, not a single legal category. Underneath it sit very different arrangements, with different rules and taxes. The first thing to do is separate two worlds: the foreign-currency account held in Brazil and the international account held abroad.

The two ways to hold dollars: an account in Brazil or an account abroad

A foreign-currency account in Brazil. Until recently, holding a dollar account inside the country was a privilege for the few cases set out in law. That began to change with Law 14,286/2021, the new foreign-exchange framework, in force since the end of 2022, which authorized the Central Bank to regulate opening and operating foreign-currency accounts in the country. The regulation came with BCB Resolution No. 277/2022. In practice, as of July 2026, these accounts are still not a retail product open to just anyone: the Central Bank defines who may hold one and under what conditions. Before counting on a dollar account in Brazil, confirm your eligibility under the rule in force.

An international account abroad. This is the most common route today. You open an account at a bank or fintech outside Brazil (in the United States, in Europe) and receive, hold, and spend in dollars there. The dollar stays a real dollar, and for anyone who spends abroad often that has value. But that account lives in another jurisdiction, and that is where two obligations the ad does not show come in.

What you take on by holding dollars abroad (the obligations no ad shows you)

Having money abroad is legal and common. What is not optional is declaring it. Two obligations apply to anyone who lives in Brazil and holds a balance abroad.

Below US$ 1 million you do not need to file the CBE, but that does not clear the rest. The second obligation is tax. Since Law 14,754/2023, in force since January 1, 2024, income from financial investments abroad held by Brazilian residents is taxed at 15% in the annual income-tax return. And there is a detail that catches many people off guard: the exchange-rate variation itself can be income.

And there is the cost of entry. Putting dollars into the account means buying dollars, and buying dollars is a foreign-exchange transaction, subject to IOF at the rate in force. As of July 2026 this ground shifted a lot (the FX IOF changed several times in 2025 and had Decree 12,499/2025 reinstated by the Supreme Court on July 16, 2025), so confirm the current rate before assuming any number.

The blind spot of idle dollars: when “keeping it in dollars” gets expensive

There is a silent trap in leaving revenue parked in dollars abroad. If you export a service and receive from abroad, that inflow today has a zero IOF rate (Art. 15-B of Decree 6,306/2007). But if, instead of bringing the money in, you leave it parked in an account abroad to convert later, it can lose its qualification as export revenue, and the later inflow falls under the general 0.38% rule. The point is debated, but it is the view that prevails today. “Keeping it to bring in later” can cost what it would not cost now.

Add to that a simple truth: at some point you convert. Bills in Brazil are paid in reais. A dollar account postpones the conversion, it does not eliminate it, and postponing means handing the exchange decision to your future self, at a rate no one controls. A global account is only good if the exchange on the way in and on the way out is fair and visible. If the conversion, when it comes, arrives with a hidden spread and a fee that only shows up on the statement, the dollar account did not protect you: it just pushed the cost forward.

A dollar account postpones the conversion. It does not eliminate the exchange — it only decides when, and at what price, it happens.

How to open yours: the honest step by step

Define what it is for

Keeping a reserve in dollars, spending on travel and subscriptions abroad, receiving and holding international revenue, or hedging against exchange-rate swings are different goals, and each points to a different arrangement. Decide this before choosing the product.

Choose between an account in Brazil and one abroad

It depends on your eligibility and your use. If you spend a lot abroad, an account there can make sense. If the goal is to receive from Brazil and use the money here, you may not need a real dollar account, but rather a transparent inbound exchange. Do not confuse the wish to “have dollars” with the solution to your actual problem.

Confirm the license of whoever offers it

Before moving money, check whether the institution is regulated, where and by whom, and how your balance is protected. We wrote a whole guide on how to evaluate an international-payments fintech before trusting it with your money.

Plan the obligations from the first dollar

CBE to the Central Bank if you cross the threshold, income tax on earnings and exchange-rate variation, and carnê-leão (monthly income tax) if what comes in is income, not a transfer of your own assets. Sort it all out with your accountant before opening, not at filing time.

Understand the cost of getting in and out

Every dollar account has two exchange legs: when you put dollars in and when you take them out. Ask for the full cost of both, the VET (Effective Rate of the Transaction), in writing, and compare the reais that come in and go out, not the advertised rate. To see the most hidden layer of that cost, read what the FX spread is and how to calculate it.

Where MON 3 fits in

MON 3 is a technology company that makes the exchange on the way in and out visible and predictable. The financial operation runs on regulated infrastructure, with licensed partners in the jurisdictions where we operate, and the total cost appears on a single line, stated before you accept, not discovered later on the statement. Settlement uses local rails (Pix in Brazil, ACH and Wire in the United States, SEPA in Europe), so the money does not travel around the world through the SWIFT chain of correspondent banks.

That is why we insist on an honest distinction: a global account only delivers value if the conversion is fair when it happens. For most people who receive from abroad and use the money in Brazil, what solves the problem is not piling up idle dollars, but receiving with a transparent exchange and a cost of 1.2% to 1.8% for individuals, everything included, or a contract rate for companies. See how it works and simulate your case.

This content is informational and does not constitute financial, legal, or tax advice. Laws change: always confirm with a qualified professional and with official sources. Data as of July 2026.