Company lists · Data refreshed November 2026

Top 8 Auditor services based in Madrid, Spain

RevenueBase identified 44 company matches for auditor services associated with Madrid, Spain as of November 2026 and tracks 236 professional contacts across them, including 21 with verified work emails. Across Spain, Madrid is the largest hub for this category.

This list covers company matches for auditor services associated with Madrid, Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
44Companies
236Contacts tracked
21Verified emails
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The 8 largest auditor services based in Madrid, Spain

Ranked by team size
Top 8 of 44 company matches for auditor services based in Madrid, Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“CET Auditores, S.L.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“ACFYD ANÁLISIS` expertise is based on performing internal audits in leading companies in Spain for more than 10 years now.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5013 contacts →

Exact match

“B20, S.A.P es una sociedad profesional que desarrolla su actividad en el ámbito de la auditoría financiera; asesoramiento financiero, fiscal y contable; asesoramiento mercantil; y…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Alesco Partners SLP es una firma de servicios profesionales relacionados fundamentalmente con la auditoría de cuentas y otros servicios de verificación contable, el asesoramiento…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5010 contacts →

Exact match

“Sobre nosotros El GRUPO OLIVEROS SASTRE nace en 2007 como resultado de la asociación de un grupo de profesionales con una amplia experiencia en los campos de la auditoría y del…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Auditoria de Cuentas e Información No Financiera.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchMadrid, SpainHQ recorded Nov 6, 20261-102 contacts →

Exact match

“10y9 is a spanish independent professional services firm specialied in audit, assurance, tax advisory, accounting, financial and business services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMadrid, SpainHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Altius Auditores es una firma de profesionales del sector de la auditoría de cuentas y consultoría que tienen una experiencia de casi dos décadas en entornos multinacionales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 8 of 44 auditor services based in Madrid, Spain

See the full list, filter by size, metro and specialty, and access 21 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Auditor services based in Madrid, Spain at a glance

As of Nov 6, 2026
8.9%Verified-email coverage
5.4Average contacts per company
1-10Median size (employees)
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
16
51-200
1

Email recency for this list is measured across the whole Spain list rather than for Madrid, so it is reported there. Company counts and contact totals on this page are exact for Madrid, over 44 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with Madrid, Spain whose business descriptions match “auditor services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 21 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Auditor services by metro in Spain

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “auditor services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many auditor services are there based in Madrid, Spain?

RevenueBase identified 44 company matches for auditor services associated with Madrid, Spain as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

CET Auditores tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in Spain has the most auditor services?

Madrid leads Spain with 44 company records, followed by Barcelona (31) and Valencia (16).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 21 professional contacts with verified work emails tracked across these 44 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 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 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.