Company lists · Data refreshed September 2026
Top 25 Expat tax law firms based in Porto Alegre, Brazil
RevenueBase identified 79 expat tax law firms headquartered in Porto Alegre, Brazil as of September 2026 and tracks 648 professional contacts across them, including 252 with verified work emails. Across Brazil, Sao Paulo is the largest hub for this category (369 companies); Porto Alegre follows with 79.
This list covers expat tax law firms headquartered in Porto Alegre, Brazil, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest expat tax law firms based in Porto Alegre, Brazil
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 72 contacts → | ||||
Indirect evidence “Somos Especialistas em Soluções Societárias, Tributárias e Jurídicas.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 70 contacts → | ||||
Indirect evidence “Com intensa atuação no Direito Tributário, o escritório atende clientes que buscam um trabalho diferenciado, pautado no compromisso, na dedicação, no estudo, na qualificação e na…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 48 contacts → | ||||
Indirect evidence “Idealizado com o propósito de assessorar empresas, o Martignoni, De Moraes e Todeschini Advogados Associados, ao longo de mais de 15 anos de atuação, tornou-se especialmente…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 47 contacts → | ||||
Indirect evidence “A Pimentel & Rohenkohl Advogados mudou: agora somos P&R Advogados Associados.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 37 contacts → | ||||
Indirect evidence “Não há dúvidas: o mundo dos negócios é extremamente desafiador, repleto de exigências, de burocracia e de alta carga tributária.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 29 contacts → | ||||
Indirect evidence “O escritório está há 15 anos no mercado de assessoria jurídica empresarial.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 29 contacts → | ||||
Indirect evidence “Contabilidade Contabilidade Digital” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 26 contacts → | ||||
Indirect evidence “O BSR Advogados e Consultoria Tributária nasceu da recorrente demanda do mercado por uma assessoria completa no âmbito tributário, tendo como objetivo o atendimento próximo…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 17 contacts → | ||||
Indirect evidence “Somos a Unikowski Advogados, um escritório especializado em direito tributário com mais de 15 anos, com alto grau de profissionalização e reconhecida atuação nos âmbitos…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 15 contacts → | ||||
Indirect evidence “Desde 1972, a Planimec atua de forma consultiva e contenciosa nas áreas do Direito Tributário e Societário.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 12 contacts → | ||||
Indirect evidence “Charneski Advogados presta serviços advocatícios nas áreas de direito tributário, contencioso tributário, direito societário, planejamento sucessório e patrimonial, auditorias…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 11 contacts → | ||||
Indirect evidence “O escritório destaca-se pela excelência, comprometimento e pessoalidade de sua atuação, obtendo resultados e soluções com os serviços que presta.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Indirect evidence “Empresas não crescem apenas por vender mais.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Indirect evidence “Baseado na larga experiência de seu sócio-fundador, o Desembargador aposentado, e hoje advogado, Adão Sergio do Nascimento Cassiano, profissional com mais de 30 anos de vivência…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Indirect evidence “Estamos em Porto Alegre, Salvador e Brasília e somos pioneiros em conectar o direito tributário ao direito de insolvência.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 contacts → | ||||
Indirect evidence “Somos uma empresa voltada para consultoria de negócios e especializada em soluções tributárias.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Indirect evidence “O Escritório presta serviços de advocacia na área do Direito Tributário, seja através da consultoria tributária, com a resposta a questionamentos ou elaboração de pareceres, seja…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Indirect evidence “O Grupo Audita Fiscal é uma empresa especializada nas áreas tributária, contábil e fiscal, atuamos no segmento de assessoria e consultoria tributária, onde nosso conhecimento…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Indirect evidence “Nascemos de um sonho, que se tornou o nosso propósito: alinhar ciência e prática na advocacia tributária.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “Atuamos nas áreas Empresarial, Tributário e Cível, tanto contencioso como consultoria jurídica de pessoas físicas e empresas, buscando as melhores soluções” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “Escritório Jurídico-Consultivo especializado na área tributária e interrelacionadas que tem por missão elaborar e entregar um trabalho customizado para pessoas físicas e jurídicas…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “Escritório de Advocacia e Consultoria jurídica tributária e societária” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “Consultoria jurídica nas áreas de Direito Societário e Tributário.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence “Escritório de advocacia especializado em Direito Internacional, Societário e Tributário.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “A SESTI E LANZINI ADVOGADOS é uma assessoria jurídica voltada para o direito tributário, empresarial e previdenciário.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: expat tax law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names expat tax law firms.
- Partial evidence
- Its own public description names part of expat tax law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name expat tax law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 79 expat tax law firms based in Porto Alegre, Brazil
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Expat tax law firms based in Porto Alegre, Brazil at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured across the whole Brazil list rather than for Porto Alegre, so it is reported there. Company counts and contact totals on this page are exact for Porto Alegre, over 79 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among expat tax law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Porto Alegre, Brazil whose own description of what they do matches “expat tax law firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names expat tax law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among expat tax law firms, and records with no verified work email. Companies headquartered outside Porto Alegre are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 252 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Expat tax law firms by metro in Brazil
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names expat tax law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many expat tax law firms are there based in Porto Alegre, Brazil?
RevenueBase identified 79 expat tax law firms headquartered in Porto Alegre, Brazil as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Affectum Grupo, headquartered in Porto Alegre, tops this list with the largest team on record.
Which city in Brazil has the most expat tax law firms?
Sao Paulo leads Brazil with 369 headquartered companies, followed by Porto Alegre (79) and Rio De Janeiro (77).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 252 verified decision-maker contacts tracked across these 79 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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