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International Law

By Zachariah Zagol, OAB/SP 351.356 · Updated: April 5, 2026

Cross-border contracts, foreign investment, trade compliance, and international arbitration in Brazil.

31 resources

Service Guides

In-depth guides to our international legal services.

Cross-Border Contracts Between Brazil and Your Country

Enforce agreements across jurisdictions. Learn governing law, dispute resolution, and enforcement strategies for Brazil contracts.

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Investing in Brazil as a Foreigner — Legal Guide

Register with Central Bank, choose entity structure, manage taxes & remittance rules. Complete legal roadmap for foreign investors.

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International Arbitration in Brazil

Resolve disputes through arbitration—faster & more enforceable than litigation. NYC Convention, arbitral institutions, enforcement strategy.

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Foreign Trade & Regulatory Compliance in Brazil

Navigate import/export procedures, customs classification, FCPA compliance, anti-corruption laws. Avoid Brazil trade penalties.

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International Asset Recovery

Locate hidden assets across jurisdictions. Letters rogatory, Hague Convention, freezing orders, Brazil-US cooperation.

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Import Structuring for Foreign Companies in Brazil

Decide who should be your importer of record in Brazil under CBS/IBS: conta e ordem, encomenda, foreign-owned CNPJ, or a subsidiary. Built for the 2027 cutover.

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Brazilian Income Tax for Expats: Complete IRPF Guide

DIRPF annual filing, foreign income declaration, deductions, deadlines, penalties, and payment for expats living in Brazil.

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Foreign Capital Registration in Brazil (RDE-IED): What Every Foreign Investor Must Know

Mandatory SISBACEN RDE-IED registration for foreign direct investment in Brazil. Reporting obligations, profit remittance, penalties, and Banco Central.

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Foreign Income & Remittances to Brazil: Tax Treatment & Central Bank Rules

How Brazil taxes foreign income, carnê-leão monthly obligations, remittance documentation, SISBACEN reporting, IOF rates, and banking requirements for.

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Healthcare & Medical Legal Rights in Brazil: SUS, Private Insurance & Foreigner Access

Legal guide to healthcare in Brazil for foreigners. SUS universal access, private planos de saúde, ANS regulation, carência periods, malpractice claims.

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Apostille vs. Consularization for Brazil

Hague Apostille (fast, cheap, 124+ countries) vs consular legalization (non-Hague, multi-step). Which you need.

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Sworn vs. Regular Translation in Brazil

Sworn translation (tradução juramentada) = legally valid. Regular translation = no legal value. When each is needed.

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Public vs. Private Power of Attorney in Brazil

Procuração pública (notarized, required for property) vs particular (private, for many admin tasks). Which when.

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Blog Posts

Articles and analysis on international law topics.

Left-behind parent organising documents for a Hague Convention return application to Brazil — ZS Advogados cross-border family law
International Law — Family

Child Abduction to Brazil: The First 72 Hours for a Left-Behind Parent

A calm, step-by-step guide for a parent whose child was taken to or kept in Brazil: Hague checks, ACAF, documents, what to avoid, and what happens next.

Parent reviewing a travel authorisation and custody order for a child leaving Brazil — ZS Advogados cross-border family law
International Law — Family

Custody Orders Across Borders: Relocation, Mirror Orders, Travel

How custody orders travel between Brazil and other countries: STJ recognition, relocation with a child, mirror orders, and ECA travel authorisations for minors.

Parent on a video call with a child abroad, illustrating cross-border contact and parental alienation claims — ZS Advogados family law
International Law — Family

Parental Alienation Claims in Cross-Border Custody Cases in Brazil

How Brazil's parental alienation statute (Lei 12.318/2010) works when parents live in different countries: jurisdiction, Hague cases, evidence, and remedies.

Partition of a Brazilian property after a divorce granted abroad — ZS Advogados cross-border family and real estate law
International Law — Family

Dividing a Brazilian Property in a Foreign Divorce

Why a foreign court cannot divide a Brazilian property (CPC art. 23), which marital regime applies, and how the partilha is done in Brazil after the decree.

Recognising a foreign divorce in Brazil — STJ homologation or direct registration at the civil registry — ZS Advogados international family law
International Law — Family

Getting a Foreign Divorce Recognised in Brazil: STJ vs Cartório

How a US, UK or EU divorce becomes effective in Brazil: direct annotation at the cartório under the CNJ national registry code, or STJ homologation.

Choosing where to file for divorce from a Brazilian spouse while living abroad — ZS Advogados cross-border family law
International Law — Family

Divorcing a Brazilian Spouse While Living Abroad: Where to File

Where to file for divorce from a Brazilian spouse when you live abroad: Brazil's jurisdiction rules, parallel cases, assets in Brazil, and remote routes.

Regularizing unpaid Brazilian rental-income withholding tax as a foreign non-resident owner — IRRF, DARF 9478, procurador and denúncia espontânea
International Tax

Regularizing Brazilian Rental-Income Tax as a Non-Resident (2026)

Foreign owner who never paid the 15% IRRF on Brazilian rent? How denúncia espontânea kills the penalties, what it does not cover, and the 2026 window.

Brazil tax residency 183-day rule and Saída Definitiva exit declarations — ZS Advogados guide
International Tax

Brazil Tax Residency & the 183-Day Rule: 2026 Guide

When you become a Brazilian tax resident, what worldwide-income tax means, and how to file the Saída Definitiva exit declarations — a plain-English 2026 guide.

US citizen at a desk in Brazil with US and Brazilian tax forms — ZS Advogados cross-border tax guide
International Tax

US Taxes While Living in Brazil: The No-Treaty Guide

No US–Brazil income tax treaty exists. How US citizens use the FEIE, Foreign Tax Credit, Totalization Agreement, FBAR, and FATCA to handle double taxation.

International Tax

How a US Person Is Taxed on Brazilian Rental Income

How the IRS taxes Brazilian rental income for US persons: 15%/25% Brazilian withholding, Form 1116 mechanics, no-treaty reality, and FX repatriation.

Illustration about international taxation and double tax treaties in Brazil
International Law — Tax

International Taxation and Tax Treaties in Brazil

Legal guide to international taxation in Brazil. Double tax treaties, transfer pricing, CFC rules, tax residency, DIRPF obligations for expats, and FATCA/CRS.

Illustration about foreign degree validation and revalidation in Brazil
International Law — Education

Foreign Degree Validation in Brazil: Complete Guide 2026

Complete guide to foreign degree validation in Brazil. Carolina Bori platform, MEC requirements, regulated professions, OAB exam for lawyers, CRM for doctors.

Illustration about dual citizenship and naturalization in Brazil
International Law — Citizenship

Dual Citizenship in Brazil: Complete Guide 2026

Complete guide to dual citizenship in Brazil. Who qualifies, process, documents, Italian and Portuguese citizenship by descent, and naturalization.

Illustration about international contracts and applicable law in Brazil
International Law

International Contracts: Applicable Law and Arbitration

Legal guide to international contracts in Brazil. Choice of law, CISG, Incoterms 2020, arbitration under Law 9,307/96, foreign judgment enforcement, and LINDB.

Illustration about international child abduction and the Hague Convention
International Law — Family

International Child Abduction and the Hague Convention

Legal guide to international child abduction in Brazil. The 1980 Hague Convention, ACAF central authority, return proceedings, and exceptions.

Illustration about international divorce and jurisdiction in Brazil
International Law — Family

International Divorce in Brazil: Jurisdiction and Assets

Legal guide to international divorce in Brazil. Jurisdiction rules, applicable law, foreign judgment recognition, and multi-country asset division.

Illustration about international trade, import and export in Brazil
International Law

International Trade in Brazil: Import and Export Guide

Legal guide to importing and exporting in Brazil. RADAR registration, Siscomex, NCM classification, customs duties, and trade agreements explained.

Illustration about apostille and Hague Convention document validation in Brazil
International Law

Apostille in Brazil: Hague Convention Document Validation

Complete guide to apostille and document validation in Brazil under the Hague Convention. Learn the process, eligible documents, costs, and timelines for 2026.