Company lists · Data refreshed September 2026

Top 25 Internal audit consulting firms based in Mexico

Name: Internal audit consulting firms based in Mexico
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 206 companies tracked

RevenueBase identified 206 internal audit consulting firms headquartered in Mexico as of September 2026 and tracks 1,665 professional contacts across them, including 139 with verified work emails and 9 with mobile numbers. Ciudad De Mexico is the largest hub.

This list covers internal audit consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

206Companies

1,665Contacts tracked

139Verified emails

9Mobile numbers

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The 25 largest internal audit consulting firms based in Mexico

Ranked by team size

Top 25 of 206 internal audit consulting firms based in Mexico, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names internal audit consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Kreston BSG MéxicoIndirect evidence	MexicoHQ checked Sep 4, 2026	201-500	322
	“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: company website · checked Sep 4, 2026
2	Resa Y Asociados, S.CIndirect evidence	Cdmx, MexicoHQ checked Sep 4, 2026	51-200	65
	“Resa y asociados S.C.” Source: company website · checked Sep 4, 2026
3	LEXATIndirect evidence	Queretaro, MexicoHQ checked Sep 4, 2026	11-50	34
	“Somos una firma de consultoría líder en materia fiscal, legal y de auditoría financiera, integrada por un equipo de profesionistas altamente experimentados.” Source: company website · checked Sep 4, 2026
4	Martinez Magallanes Consultores SCIndirect evidence	Monterrey, MexicoHQ checked Sep 4, 2026	11-50	33
	“Martínez Magallanes Consultores S.C.” Source: company website · checked Sep 4, 2026
5	Salgado Accounting And TAXPartial evidence	Zapopan, MexicoHQ checked Sep 4, 2026	11-50	30
	“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: company website · checked Sep 4, 2026
6	Protiviti MexicoPartial evidence	Miguel Hidalgo, MexicoHQ checked Sep 4, 2026	51-200	28
	“Protiviti es una firma global de consultoría de negocios y auditoría interna, integrada por profesionales especializados en servicios de riesgos de negocios, transacciones y…” Source: company website · checked Sep 4, 2026
7	Elaf Auditoría Y ConsultoríaIndirect evidence	Aguascalientes, MexicoHQ checked Sep 4, 2026	11-50	21
	“Somos una firma 100% Hidrocálida constituida en 2013, cuya principal fortaleza es la mezcla apropiada de experiencia y dinamismo, misma que nos permite estar a la vanguardia en la…” Source: company website · checked Sep 4, 2026
8	Rocha Mendoza Consulting, S.CIndirect evidence	Mexico City, MexicoHQ checked Sep 4, 2026	11-50	19
	“Somos una firma de auditoría y consultoría establecida en 2009, con la misión de mejorar el desempeño y sustentabilidad de nuestros clientes a través del análisis y soluciones…” Source: company website · checked Sep 4, 2026
9	Fidem Consulting IT ServicesStrong evidence	MexicoHQ checked Sep 4, 2026	51-200	19
	“FIDEM Consulting IT Services S.C.(FIDEM®) es una firma constituida en 1994, especializada en servicios de consultoría de negocios, cumplimiento normativo, control interno…” Source: company website · checked Sep 4, 2026
10	Morales SainzPartial evidence	Saltillo, MexicoHQ checked Sep 4, 2026	11-50	17
	“Somos una firma de consultoría, certificada internacionalmente, que brinda servicios especializados en diversas áreas como auditorias, fiscales, financieras, nóminas…” Source: company website · checked Sep 4, 2026
11	DE Anda Torres Gallardo Y CIA S.C. DE R.L. DE C.VIndirect evidence	Mexico City, MexicoHQ checked Sep 4, 2026	11-50	17
	Source: company website · checked Sep 4, 2026
12	Nuricumbo PartnersPartial evidence	Mexico City, MexicoHQ checked Sep 4, 2026	1-10	15
	“Innovative consulting firm founded in 2004 by top leaders in the management consulting space- Eight practice leaders; more than twenty-five multi-disciplinary consultants- Four…” Source: company website · checked Sep 4, 2026
13	Conta MCIndirect evidence	MexicoHQ checked Sep 4, 2026	11-50	14
	“Servicios profesionales en contabilidad, auditoría, impuestos y asesoría administrativa y financiera; con conceptos innovadores y métodos de control administrativo que se conectan…” Source: company website · checked Sep 4, 2026
14	VLH Accountants & ConsultantsPartial evidence	Norte, MexicoHQ checked Sep 4, 2026	51-200	13
	“Somos una firma de prestigio que desde hace más de 44 años ofrece auditorías externas e internas, y consultoría, para todo tipo de empresas.” Source: company website · checked Sep 4, 2026
15	BlindaIndirect evidence	MexicoHQ checked Sep 4, 2026	11-50	13
	“Blinda es una firma que conjuga la experiencia de más de treinta años de profesionales multidisciplinarios.” Source: company website · checked Sep 4, 2026
16	FS Advisory FirmIndirect evidence	MexicoHQ checked Sep 4, 2026	11-50	13
	“FS Advisory Firm, SC, is a Firm that combines years of experience among its multidisciplinary professionals with the objective of providing specialized services related to…” Source: company website · checked Sep 4, 2026
17	Quezada FernándezIndirect evidence	Tijuana, MexicoHQ checked Sep 4, 2026	11-50	12
	“Integral advice for your business.” Source: company website · checked Sep 4, 2026
18	C&c ConsultingPartial evidence	Ciudad De Mexico, MexicoHQ checked Sep 4, 2026	11-50	10
	“En C&C Consulting siempre te damos más, nos enfocamos en resolver sus necesidades en las áreas fiscal, legal, consultoría, PLD, contraloría externa y auditoría; con el apoyo de…” Source: company website · checked Sep 4, 2026
19	Aatac ServicesIndirect evidence	MexicoHQ checked Sep 4, 2026	11-50	8
	“Un equipo comprometido con el éxito de su negocio" Firma multidisciplinaria de profesionales con más de 20 años de experiencia que le ayudarán a cumplir los objetivos de su…” Source: company website · checked Sep 4, 2026
20	Revidere-DfkIndirect evidence	Puebla, MexicoHQ checked Sep 4, 2026	11-50	7
	“Bajo la marca "Revidere-DFK" prestamos servicios de auditoría y consultoría a clientes del sector privado y público (Gobierno).” Source: company website · checked Sep 4, 2026
21	Mm&tIndirect evidence	Toluca De Lerdo, MexicoHQ checked Sep 4, 2026	11-50	6
	“Ante los constantes cambios que se suscitan en todo el mundo, los cuales inciden de manera directa en nuestro entorno, las formas tradicionales de hacer negocios no bastan.” Source: company website · checked Sep 4, 2026
22	Kaxaan ConsultoresPartial evidence	Monterrey, MexicoHQ checked Sep 4, 2026	11-50	6
	“Somos una firma especializada en Asesoría y Consultoría en Auditoría interna, Control Interno, Fiscal, Comercio Exterior y Normatividad Contable.” Source: company website · checked Sep 4, 2026
23	Idefi Consultores, S.CIndirect evidence	MexicoHQ checked Sep 4, 2026	1-10	6
	Source: company website · checked Sep 4, 2026
24	OAV ConsultoresIndirect evidence	Guadalajara, MexicoHQ checked Sep 4, 2026	1-10	6
	“En OAV Consultores, estamos comprometidos con el crecimiento sostenido de nuestros clientes, ofreciendo asesorías integrales que deriven en la optimización de sus recursos…” Source: company website · checked Sep 4, 2026
25	ISM GRCIndirect evidence	Zapopan, MexicoHQ checked Sep 4, 2026	11-50	4
	“ISM GRC is a boutique auditing and advisory firm that enables organizations to achieve their goals consistently with GRC Solutions It offers solutions for Governance, Risk…” Source: company website · checked Sep 4, 2026

Showing 25 of 206 internal audit consulting firms based in Mexico

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Internal audit consulting firms based in Mexico at a glance

As of Sep 4, 2026

11-50Median size (employees)

Ciudad De MexicoLargest hub · 23 HQs

9Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Verified emails by last verification

0–30

31–60

61–90

90–180

180+

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 internal audit consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Mexico whose own description of what they do matches “internal audit consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among internal audit consulting firms, 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 an evidence 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, 139 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 4, 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.

Frequently asked

How many internal audit consulting firms are there based in Mexico?

RevenueBase identified 206 internal audit consulting firms 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?

Kreston BSG México, headquartered in Puebla, tops this list with the largest team on record.

Which city has the most internal audit consulting firms?

Ciudad De Mexico leads with 23 headquartered companies, followed by Monterrey (18) and Guadalajara (12).

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 139 verified decision-maker contacts tracked across these 206 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 4, 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 SmartSearch, 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.