Company lists · Data refreshed September 2026

Top 23 Tax law firms based in Argentina

RevenueBase identified 767 tax law firms headquartered in Argentina as of September 2026 and tracks 7,685 professional contacts across them, including 2,027 with verified work emails and 39 with mobile numbers. Ciudad Autonoma De Buenos Aires is the largest hub.

This list covers tax law firms headquartered in Argentina, 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 6, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
767Companies
7,685Contacts tracked
2,027Verified emails
39Mobile numbers
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The 23 largest tax law firms based in Argentina

Ranked by team size
Top 23 of 767 tax law firms based in Argentina, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to tax law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceCiudad De Buenos Aires, ArgentinaHQ checked Sep 6, 2026501-1,000688 contacts →

“Fundada en 1923, Marval O’Farrell Mairal es la firma legal más grande de la Argentina, líder en el país y también en Latinoamérica.”

Source: company website · checked Sep 6, 2026
2Indirect evidenceCiudad Autónoma De Buenos Aires, ArgentinaHQ checked Sep 6, 2026501-1,000553 contacts →

“Somos una firma de profesionales altamente especializados y comprometidos con las necesidades de nuestros clientes.”

Source: company website · checked Sep 6, 2026
3Partial evidenceSan Nicolás, ArgentinaHQ checked Sep 6, 2026201-500299 contacts →

“We are a leading law firm in Argentina, with over 125 years of practice both locally and abroad.”

Source: company website · checked Sep 6, 2026
4Indirect evidenceCapital Federal, ArgentinaHQ checked Sep 6, 2026201-500259 contacts →

“Bruchou & Funes de Rioja es una firma de servicios legales integrales de reputación internacional y líder indiscutido en el mercado.”

Source: company website · checked Sep 6, 2026
5Indirect evidenceCiudad Autónoma De Buenos Aires, ArgentinaHQ checked Sep 6, 202651-200175 contacts →

“Somos SMS Buenos Aires, firma especializada en servicios de auditoría, asesoramiento fiscal y consultoría para empresas, con presencia internacional.”

Source: company website · checked Sep 6, 2026
6Indirect evidenceTribunales, ArgentinaHQ checked Sep 6, 2026201-500161 contacts →

“Desde sus orígenes en la ciudad de Buenos Aires en 1925, nuestro Estudio se ha destacado como un referente de conocimiento, experiencia y confiabilidad en el mundo de las…”

Source: company website · checked Sep 6, 2026
7Indirect evidenceBuenos Aires, ArgentinaHQ checked Sep 6, 202651-200127 contacts →

“ABBFP & W brinda a sus clientes un asesoramiento global y abarcativo en todas las áreas del derecho.”

Source: company website · checked Sep 6, 2026
8Indirect evidenceBelgrano, ArgentinaHQ checked Sep 6, 202651-200124 contacts →

“WNS & Asociados se encuentra en la constante búsqueda de las mejores perspectivas, el más alto nivel de sofisticación y eficacia en las soluciones propuestas y a tal efecto…”

Source: company website · checked Sep 6, 2026
9Partial evidenceCity Of Buenos Aires, ArgentinaHQ checked Sep 6, 202651-20058 contacts →

“Founded in 2001, RCTZZ is one of the fastest growing law firms in Argentina.”

Source: company website · checked Sep 6, 2026
10Indirect evidenceCuidad Autónoma De Buenos Aires, ArgentinaHQ checked Sep 6, 202611-5050 contacts →

“Somos una firma profesional especializada en consultoría tributaria y de negocios, líder en estrategia fiscal.”

Source: company website · checked Sep 6, 2026
11Indirect evidenceRosario, ArgentinaHQ checked Sep 6, 202611-5048 contacts →

“Somos una organización con más de 50 años de trayectoria, liderada por un equipo de profesionales experimentados.”

Source: company website · checked Sep 6, 2026
12Strong evidenceCiudad De Buenos Aires, ArgentinaHQ checked Sep 6, 202611-5046 contacts →

“JP O´Farrell Abogados is a full-service law firm, with a strong emphasis on corporate, tax, litigation, and labor law.”

Source: company website · checked Sep 6, 2026
13Indirect evidenceCiudad Autonoma De Buenos Aires, ArgentinaHQ checked Sep 6, 202651-20041 contacts →

“El Estudio fue fundado por Julián Arturo de Diego en 1975, líder en asesoramiento laboral empresario, con destacada actuación en el logro de resonantes éxitos.”

Source: company website · checked Sep 6, 2026
14Indirect evidenceCiudad Autónoma De Buenos Aires, ArgentinaHQ checked Sep 6, 202611-5031 contacts →

“Juan McEwan fue pionero en desarrollar en Argentina la prestación de servicios legales y fiscales orientados a clientes privados.”

Source: company website · checked Sep 6, 2026
15Indirect evidenceBuenos Aires, ArgentinaHQ checked Sep 6, 202611-5029 contacts →

“FJ Cárrega & Asociados -Abogados- ha tenido un crecimiento sostenido en los últimos años, siempre con apoyo en la confianza de sus clientes.”

Source: company website · checked Sep 6, 2026
16Indirect evidenceBuenos Aires, ArgentinaHQ checked Sep 6, 202611-5026 contacts →

“Somos una firma multidisciplinaria integrada por abogados y contadores que, desde hace más de dos décadas, lidera el asesoramiento estratégico a individuos, familias y empresas en…”

Source: company website · checked Sep 6, 2026
17Indirect evidenceComuna 1, ArgentinaHQ checked Sep 6, 202611-5026 contacts →

“Estudio Contable especializado en las areas de Auditoría, Impuestos y Sueldos, con el apoyo en materia juridica del Dr.”

Source: company website · checked Sep 6, 2026
18Indirect evidenceBuenos Aires, ArgentinaHQ checked Sep 6, 202611-5026 contacts →

“Firma legal compuesta por profesionales de destacada trayectoria, especializada en asesoramiento corporativo, derecho de la insolvencia, conflictos societarios y litigios…”

Source: company website · checked Sep 6, 2026
19Indirect evidenceCordoba, ArgentinaHQ checked Sep 6, 202611-5025 contacts →

“Conforto, Fissore y Asociados" es una organización integral dedicada a la auditoría y consultoría impositiva, contable y gestión empresarial.”

Source: company website · checked Sep 6, 2026
20Indirect evidenceC.a.b.a, ArgentinaHQ checked Sep 6, 202611-5024 contacts →

“BIENVENIDOS En PASCUAL FICHERA & ASOCIADOS acompañamos y supervisamos en forma permanente los requerimientos y necesidades de los clientes.”

Source: company website · checked Sep 6, 2026
21Indirect evidenceCiudad Autonoma De Buenos Aires, ArgentinaHQ checked Sep 6, 202651-20023 contacts →

“El Estudio Lévy Guido & Lévy inició sus actividades en 1952.”

Source: company website · checked Sep 6, 2026
22Indirect evidenceBuenos Aires, ArgentinaHQ checked Sep 6, 202611-5023 contacts →

“Estudio Peri & Asociados fue fundado en 1982 por Gustavo A.”

Source: company website · checked Sep 6, 2026
23Indirect evidenceComuna 14, ArgentinaHQ checked Sep 6, 202611-5022 contacts →

“Somos un grupo de profesionales en ciencias económicas que nos especializamos en brindar servicios de alto valor agregado en el área de Impuestos, Precios de Transferencia y…”

Source: company website · checked Sep 6, 2026

Showing 23 of 767 tax law firms based in Argentina

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Tax law firms based in Argentina at a glance

As of Sep 6, 2026
26.4%Verified-email coverage
0.5%Mobile-number coverage
10.0Average contacts per company
1-10Median size (employees)
16.7%Largest-city concentration · Ciudad Autonoma De Buenos Aires
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
554
11-50
180
51-200
21
201-500
4
501-1,000
2
1,001-5,000
2

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 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 Argentina whose own description of what they do matches “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 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 tax law firms, and records with no verified work email. Companies headquartered outside Argentina 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, 2,027 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 6, 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.

Tax law firms by metro

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 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 tax law firms are there based in Argentina?

RevenueBase identified 767 tax law firms headquartered in Argentina 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?

Marval O'farrell, Mairal, headquartered in Ciudad De Buenos Aires, tops this list with the largest team on record.

Which city has the most tax law firms?

Ciudad Autonoma De Buenos Aires leads with 128 headquartered companies, followed by Buenos Aires (103) and Cordoba (46).

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 2,027 verified decision-maker contacts tracked across these 767 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 6, 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.