Key Highlights
- Brazil’s government is studying whether to apply the IOF tax to cross-border crypto transfers, especially stablecoin transactions.
- New central bank rules classify stablecoin operations as foreign-exchange transactions, paving the way for possible taxation.
- Authorities aim to curb money laundering and under-invoicing schemes as Brazil’s crypto market hits 227 billion reais in H1 2025.
Brazil is moving toward tightening regulation of its rapidly expanding cryptocurrency market by examining whether to tax digital assets used for international payments.
Two officials familiar with the confidential discussions told Reuters that the Finance Ministry is studying an expansion of the country’s financial transaction tax, known as IOF, to cross-border transfers made with virtual assets and stablecoins—transactions that the central bank newly defines as foreign-exchange operations.
Currently, crypto transactions in Brazil are not subject to IOF, giving users a way to move money internationally without paying the levy normally charged on foreign-exchange dealings.
While the Finance Ministry declined to comment on the review, one source said the goal is to close the regulatory gap and ensure that stablecoins are not used as a workaround to avoid traditional FX rules.
Potential revenue boost amid fiscal pressure
Though officials insist the proposal is aimed at regulatory consistency, the measure could significantly increase public revenue at a time when Brasília is struggling to meet its fiscal targets.
Brazil’s crypto market has grown rapidly over the past few years, driven mainly by the rise of stablecoins, which give people an easy way to hold dollar-backed assets without dealing with extreme price swings.
According to data from Brazil’s tax authority, crypto transactions totaled 227 billion reais, about $42.8 billion in the first half of 2025. That’s a 20% increase compared to the same period a year earlier.
Most of this activity was in USDT, the dollar-pegged stablecoin created by Tether, which made up nearly two-thirds of all trades. Bitcoin, on the other hand, represented only about 11% of transactions, showing that it’s being used more for investment than for everyday payments.
Central bank’s new framework sets the stage
The central bank’s newly issued rules, which take effect in February, classify any purchase, sale, or exchange of stablecoins as a foreign-exchange transaction. The change also applies to international payments using virtual assets, the settlement of card-based obligations, other electronic methods of cross-border transfers, and the movement of assets to or from self-custody wallets.
According to one official, the central bank’s assessment is that stablecoins are widely used in Brazil as a low-cost mechanism to hold U.S. dollar positions, making regulatory reform essential.
The new classifications do not, however, automatically generate tax obligations. For IOF to apply, Brazil’s federal tax authority must issue separate guidance, which the government is now reviewing “carefully.”
Concerns over money laundering and undeclared imports
Brazilian authorities have long warned that stablecoins have become a preferred channel for payments rather than investment, raising concerns about their use in laundering illicit funds.
On Monday, the tax service expanded its reporting requirements for crypto transactions to include foreign service providers operating in the country, seeking greater visibility into the sector.
A Federal Police official noted that subjecting these flows to IOF scrutiny would also help enforce customs rules. He described common schemes in which importers officially declare only a fraction of the value of machinery or inputs and transfer the remainder via USDT to avoid taxes.
“If you import machinery or inputs, declare 20% officially, and send the other 80% via USDT without paying customs duties, IOF is the least of your problems,” he said, estimating that the government may be losing more than $30 billion annually to crypto-based under-invoicing.
Next steps and market implications
The government is likely to spend the next few weeks deciding whether crypto payments used for international transactions should be taxed under the IOF system. Whatever choice it makes will play a major role in determining how smoothly cryptocurrencies fit into Brazil’s traditional financial rules.
If the tax goes through, sending money overseas using crypto would become more expensive, which might make stablecoins a less attractive option for remittances and international transactions.
Right now, Brazil is at an important turning point. Closing this loophole could significantly reshape the country’s fast-growing crypto market—one of the most active in all of Latin America.
Also Read: ECB Warns $300B Stablecoin Market Could Threaten Global Finance
