Mercosur is a South American trade bloc whose full members are Argentina, Brazil, Paraguay, Uruguay and Bolivia, with Venezuela suspended. There is no common currency, so each country uses its own. Business banking is dominated by domestic banks, and a company normally needs a local entity and tax number before it can open a corporate account. As of 16 June 2026.
- Full members
- Argentina, Brazil, Paraguay, Uruguay and Bolivia. Venezuela suspended since December 2016. As of 16 June 2026.
- Currencies
- Real, peso in Argentina and Uruguay, guarani and boliviano. No common currency.
- Common requirement
- A local legal entity, a local tax number and often a resident legal representative.
- Watch out for
- Rules and timelines vary widely by country and foreign owners face stricter checks.
General information, not financial, legal, or tax advice. Verify current terms and eligibility with the provider before applying.
The Mercosur banking landscape
Mercosur is a trade bloc rather than a single financial market, so there is no shared banking licence or common currency the way there is in the euro area. Each country regulates its own banks and sets its own rules for opening a corporate account. As of 16 June 2026, the full members are Argentina, Brazil, Paraguay, Uruguay and Bolivia, which became a full member in 2024, while Venezuela remains suspended. A business that operates across the bloc usually deals with a separate bank and a separate set of requirements in each country.
Currencies across the bloc
There is no common Mercosur currency. Brazil uses the real, Argentina and Uruguay each use a peso, Paraguay uses the guarani and Bolivia uses the boliviano. As of 16 June 2026, a company that trades across the region holds and converts several currencies, and currency controls and inflation differ markedly by country, so the practical cost of holding and moving money varies a great deal.
Local entities and tax numbers
Across the bloc, opening a corporate account normally starts with a local legal entity and a local tax number. Brazil uses the CNPJ, Argentina the CUIT, Uruguay the RUT, Paraguay the RUC and Bolivia the NIT. Banks commonly also expect a legal representative resident in the country, identification for directors and beneficial owners, and supporting corporate documents, often apostilled and translated. As of 16 June 2026, a foreign owned company usually cannot open a local account without first registering in the country.
How long it takes
Timelines vary by country and by how complete the paperwork is. As of 16 June 2026, reported ranges run from about two weeks in Argentina and Uruguay once documents are ready to around two to four months in Brazil. These are general ranges, not a guarantee, so confirm the current process with the bank and a local adviser before you commit.
What you usually need to open an account
Requirements differ by country, but a common core appears across the bloc. As of 16 June 2026. Verify with the provider
- A registered local legal entity and a local tax number, such as a CNPJ, CUIT, RUT, RUC or NIT.
- A legal representative resident in the country, in many cases, plus identification for directors and beneficial owners.
- Corporate documents such as the bylaws and certificate of registration, often apostilled and translated, and a description of the business activity.
- Extra checks for foreign owners or complex structures, which can lengthen the process.
Compare business account options in Mercosur
Business banking across Mercosur is led by domestic banks, and there is no single pan regional account. Browse the provider reviews to understand the options, then confirm local eligibility and terms with a bank and a local adviser before applying. Shown as of 16 June 2026.
Browse business account reviews →Common questions
Which countries are members of Mercosur?
Is there a single Mercosur currency?
Can a foreign company open a business account in a Mercosur country?
How long does it take to open a corporate account in the region?
Fees, features, and eligibility change and vary by region. This page was last reviewed on 16 June 2026. Confirm current terms with the provider before applying.