How to evaluate an international payments fintech before you trust it with your money

Every platform says it is safe. Almost none explains what that means. If you are trying to work out whether an international payments fintech is solid enough to move your company's money — or your own — into or out of Brazil, the industry's marketing will not help you: it is made of adjectives, and an adjective cannot be verified. This piece is the opposite of that. It is a set of concrete questions to put to any platform, with MON 3's answers in the middle, none of them inflated — and a section on what MON 3 still does not do.

"Is it safe?" is the wrong question. The right ones are different.

"Is it safe?" allows exactly one answer in this market, and that answer is yes. No company will say anything else. The question does not separate the platform with real infrastructure from the platform with a good landing page, because both reply the same way.

The questions that do separate them are boring and specific. Who actually executes the financial operation. What the whole thing costs once everything is added up, not just the headline fee. What happens when something breaks mid-transfer. How access to your account is protected. Who the company and the people behind it are, with a legal name and a registration number.

None of those can be answered with an adjective. That is exactly why they work.

Who executes the financial operation?

This is the question most people skip and the one that matters most. There is a real difference between being a licensed institution and operating with licensed institutions. Both models are legitimate. What is not legitimate is a company refusing to tell you which one it is.

A bank or a payment institution holds its own authorization from a regulator, meets a minimum capital requirement, and answers directly for the custody of your money. A technology provider builds the software, the experience and the orchestration of the operation — and settlement runs through partners that hold those licenses in the jurisdictions where the money actually moves. Risk does not disappear in either model. It changes address. What you need to know is the address.

MON 3 is the second case, and it is written into the contract. We are not a bank. We are not a financial institution. We are a technology provider: the financial operation is executed on licensed and regulated infrastructure in the jurisdictions where we operate, and our policy is to work only with regulated partners. You will find the wording in our terms of use and the full shape of the operation in how it works.

If the platform you are evaluating cannot answer that in one sentence — or answers "we're regulated" without saying by whom, where, and under which license — you already have your answer.

Is the price the whole price?

A headline quote is a sales technique, not a price. The real cost of a cross-border transfer has three layers: the fee the platform advertises, the spread baked into the exchange rate, and the taxes and charges that land at settlement. A platform can advertise "zero fees" and recover all of it — with room to spare — in the second layer, the one almost nobody checks. If you have never run that arithmetic on your own transfers, it is worth understanding what an FX spread is and how to calculate it before you compare any two offers.

On the Brazilian side, the regulator already solved the naming problem for you. It is called the VET (Valor Efetivo Total, total effective value): exchange rate, taxes and charges summed into a single number, which the institution is required to disclose before you commit to the operation. Brazil's central bank even publishes a VET ranking by institution. Ask for the VET, or for its equivalent in your own market. It is the question that turns a marketing conversation into a pricing conversation.

At MON 3, for individuals, the fee is up to 1.8% — total cost, FX included. That is a ceiling, not a floor. For companies, pricing is quoted on request, and we explain exactly why further down: volume, corridor and structure change the arithmetic, and a fixed number published on a homepage would be an invented number for half the cases.

What happens on the bad day?

Every cross-border operation has bad days. An account detail typed wrong, an intermediary bank sitting on the settlement, one more document requested by compliance on the other side. The difference between a serious platform and a fragile one does not show up on the day everything works. It shows up on that one.

So ask three things. Is there a human on the other end? If the only channel is a form and a promise of a reply within five business days, you are alone the moment your money stops moving. Is the operation traceable? You should be able to say, at any point, what stage it is in — not just "sent" and "completed". Is there a receipt? A document you can attach to a case, send to your supplier, and hand to your accountant.

At MON 3 support is human and has a public address: /en/support. Every operation has a status you can follow in the app and a receipt at the end. And the standard you should hold us to is the one you would hold any other platform to: when something stalls, we want to tell you where it stalled, what we are doing, and when it moves again — not repeat "we're looking into it".

How your data and your access are protected

There is a counterintuitive point here worth saying out loud: friction at sign-up is a feature, not a defect. If a cross-border platform opens an account in two minutes without asking for a single document, the problem is not your convenience — it is everything else passing through that door with nobody watching.

MON 3 runs KYC for individuals and KYB for companies, requires 2FA at login, uses bank-grade encryption on your data, and monitors operations 24/7. That is the industry floor, and it is precisely because it is the floor that the question is useful: a platform that skips it is not being lighter with you. It is being lighter with everyone, including the people you would rather not share infrastructure with.

Who is behind it

Ask for the legal name. Ask for the registration number. Ask who founded it. These are questions an honest company answers in ten seconds and an opaque operation never answers at all.

MON 3 is the brand name. The company is Montres Global LTDA, Brazilian company number (CNPJ) 56.442.269/0001-82, founded in 2025, headquartered in Minas Gerais, Brazil. We are an official Circle partner, within the Circle Partner Network. The names and faces of the founders are on /en/about, with no pseudonyms.

And here is a fact that is not a sales argument: founded in 2025 means a young company. Less history than a hundred-year-old bank, obviously. The honest response to that is not to fake maturity with skyline photography — it is to hand over the company number, the partners and the contract, and let you check each one.

A checklist to use with any platform

Take these five questions into any conversation — with us or with anyone else.

Who the company is on paper

Legal name, registration number, year founded, address. If it is not on the site, look it up in the public registry of the country it claims to operate from. If it does not exist there, end the conversation.

Who settles the money

Is the company licensed, or does it operate with licensed partners? Which partners, in which jurisdictions? A vague answer here is the only answer that matters.

What the all-in cost is

Ask for the VET, or its equivalent: fee plus spread plus taxes plus charges, in writing, for the exact amount you are sending. Compare that number, never the rate on the screen.

What happens on the bad day

How do I reach a person. How fast. How do I trace the operation. What receipt do I get.

What the company admits it does not do

Look for the page, the paragraph, the sentence. If it exists nowhere, it is not because the company does everything. It is because it is not telling you.