Company lists · Data refreshed September 2026
Top 25 Big four agencies based in Mexico
RevenueBase identified 395 big four agencies headquartered in Mexico as of September 2026 and tracks 10,076 professional contacts across them, including 1,350 with verified work emails. Ciudad De Mexico is the largest hub.
This list covers big four agencies headquartered in Mexico, 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 21, 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 big four agencies based in Mexico
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,255 contacts → | ||||
Indirect evidence “La Firma en México fue fundada en 1946.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,777 contacts → | ||||
Indirect evidence “En PwC México, contribuimos a generar confianza en la sociedad y a resolver problemas importantes.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 614 contacts → | ||||
Indirect evidence “Con 25 oficinas a lo largo de todo el País, Gossler S.C está catalogada como la 5ta Firma más grande en México.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 461 contacts → | ||||
Indirect evidence “We are an independent member of Baker Tilly International, one of the ten largest firms in the world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 367 contacts → | ||||
Indirect evidence “Somos la quinta firma de contadores públicos y consultores de negocio a nivel mundial, proporcionamos los servicios profesionales de Auditoría; Impuestos y Consultoría Fiscal…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 348 contacts → | ||||
Indirect evidence “Forvis Mazars is a leading global professional services network.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 348 contacts → | ||||
Indirect evidence “Con más de 30 años en el mercado mexicano, RSM México es una firma líder en auditoría, impuestos y consultoría con profunda experiencia en diversas industrias y especializaciones…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 322 contacts → | ||||
Indirect evidence “Bienvenidos a Kreston BSG."Knowing you" Somos una firma de consultoría multidisciplinaria que brinda soluciones integrales mediante la sinergia de un equipo de expertos en el área…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 283 contacts → | ||||
Indirect evidence “Russell Bedford México, miembros de Russell Bedford International (RBI), red mundial de Firmas independientes de Contadores Públicos y Asesores de Negocios, con la cobertura de…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 233 contacts → | ||||
Indirect evidence “Nuestra misión es brindar asesoría fiscal, legal, financiera y de negocios a empresas nacionales e internacionales y nos caracterizamos por lograr “Resultados Óptimos” y brindar…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 97 contacts → | ||||
Indirect evidence “Proporcionamos servicios profesionales en las áreas de Auditoría, Contabilidad, Impuestos y Consultoría.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 97 contacts → | ||||
Indirect evidence “PKF MEXICO, S.C.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 82 contacts → | ||||
Indirect evidence “Moore Stephens Orozco Medina, S.C, es una Firma de Contadores Públicos y Asesores de Negocios, constituida hace más de 35 años.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 75 contacts → | ||||
Indirect evidence “We are a consolidated firm of certified public accountants, lawyers and consultants with national and international presence.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 72 contacts → | ||||
Indirect evidence “Somos una firma de Consultoría de Negocios con más de 50 años de experiencia enfocados en proporcionar soluciones integrales mediante nuestros servicios de Contabilidad…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 65 contacts → | ||||
Indirect evidence “Resa y asociados S.C.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 64 contacts → | ||||
Indirect evidence “HLB MV Consultores Es la representación profesional de Maldonado Villaseñor Consultores, S.C, firma regional de contadores públicos y asesores empresariales que cuenta con una…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 39 contacts → | ||||
Indirect evidence “At Velderrain Sáenz & Asociados, S.C, we specialize in corporate accounting, compliance, audit, and appraisal services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 34 contacts → | ||||
Indirect evidence “Somos una firma de consultoría líder en materia fiscal, legal y de auditoría financiera, integrada por un equipo de profesionistas altamente experimentados.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 33 contacts → | ||||
Indirect evidence “Martínez Magallanes Consultores S.C.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 32 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 31 contacts → | ||||
Indirect evidence “Salgado Accounting & Tax, S.C, is a consulting firm with 19 years of operation, which has merged the experience, capacity, professionalism and dynamism of its founding and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 30 contacts → | ||||
Indirect evidence “Nuestros servicios profesionales fueron cuidadosamente diseñados para satisfacer las necesidades de nuestros clientes para el logro de sus objetivos y metas.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 29 contacts → | ||||
Indirect evidence “Our professional services firm was established in 2003 by a team of experts in tax, audit, finance, and management consulting, with our legal department opening shortly afterwards.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 28 contacts → | ||||
Indirect evidence “Perez Gongora & Asociados (PGA) was established more than 30 years ago as a specialized firm in tax planning and audit.” Source: RevenueBase Database · checked Sep 21, 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: big four agencies. 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 big four agencies.
- Partial evidence
- Its own public description names part of big four agencies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name big four agencies. 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 395 big four agencies based in Mexico
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,350 reachable decision-makers.
Free signup · no credit card
Big four agencies based in Mexico at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Mexico, so it is reported there. Company counts and contact totals on this page are exact for Mexico, over 395 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 big four agencies, 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 Mexico whose own description of what they do matches “big four agencies”. 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 big four agencies), 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 big four agencies, and records with no verified work email. Companies headquartered outside Mexico 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, 1,350 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 21, 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.
Big four agencies by metro
- Big four agencies in Ciudad De Mexico41
- Big four agencies in Monterrey27
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 big four agencies, 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 big four agencies are there based in Mexico?
RevenueBase identified 395 big four agencies headquartered in Mexico 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?
Kpmg México, headquartered in Mexico City, tops this list with the largest team on record.
Which city has the most big four agencies?
Ciudad De Mexico leads with 41 headquartered companies, followed by Monterrey (27) and Mexico (22).
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 1,350 verified decision-maker contacts tracked across these 395 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 395 big four agencies based in Mexico. Start with a free account, no credit card.
Download this list →Related lists
Big four agencies by geography
- Big four agencies based in Belo Horizonte, Brazil
- Big four agencies based in Campinas, Brazil
- Big four agencies based in Curitiba, Brazil
- Big four agencies based in Porto Alegre, Brazil
- Big four agencies based in Recife, Brazil
- Big four agencies based in Rio De Janeiro, Brazil
- Big four agencies based in Salvador, Brazil
- Big four agencies based in Sao Paulo, Brazil
- Big four agencies based in Calgary, Canada
- Big four agencies based in Mississauga, Canada
- Big four agencies based in Montreal, Canada
- Big four agencies based in Toronto, Canada
Browse the directory
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Big four agencies based in Belo Horizonte, Brazil
- Big four agencies based in Campinas, Brazil
- Big four agencies based in Curitiba, Brazil
- Big four agencies based in Porto Alegre, Brazil
- Big four agencies based in Recife, Brazil
- Big four agencies based in Rio De Janeiro, Brazil