Company lists · Data refreshed October 2026

Top 14 Accounting firms for international nonprofits based in Madrid, Spain

RevenueBase identified 48 company matches for accounting firms for international nonprofits associated with Madrid, Spain as of October 2026 and tracks 427 professional contacts across them, including 28 with verified work emails. Across Spain, Madrid is the largest hub for this category.

This list covers company matches for accounting firms for international nonprofits 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 October 1, 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 Oct 1, 2026 How this list was built
48Companies
427Contacts tracked
28Verified emails
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The 14 largest accounting firms for international nonprofits based in Madrid, Spain

Ranked by team size
Top 14 of 48 company matches for accounting firms for international nonprofits based in Madrid, Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 Oct 1, 202651-20036 contacts →

Exact match

“MGI Audicon & Partners is part of the MGI network, a worldwide association of auditing and consulting firms with international and local presence.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Oct 1, 202611-5036 contacts →

Exact match

“Expertos en consultoría, asesoría y auditoría para todo tipo de empresas.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchMadrid, SpainHQ recorded Oct 1, 202611-5014 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 · Oct 1, 2026 · View company records in RevenueBase
4Exact matchMadrid, SpainHQ recorded Oct 1, 202611-5010 contacts →

Exact match

“Contagesha (Contabilidad y Gestión Habana S.L.) is a Madrid-based company specializing in accounting, tax and labour consultancy for small and medium-sized companies…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5Exact matchMadrid, SpainHQ recorded Oct 1, 202611-508 contacts →

Exact match

“FICESA TREUHAND SAP is a management consulting company based out of CALLE DEL MARQUÉS DEL RISCAL, 11, MADRID, Spain.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6Exact matchMadrid, SpainHQ recorded Oct 1, 202611-508 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 · Oct 1, 2026 · View company records in RevenueBase
7Exact matchMadrid, SpainHQ recorded Oct 1, 20261-104 contacts →

Exact match

“Te ayudamos en las siguientes áreas: • Confección de la contabilidad de acuerdo al Plan General Contable, Código de comercio y legislación comunitaria.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8Exact matchMadrid, SpainHQ recorded Oct 1, 20261-103 contacts →

Exact match

“Auditoria de Cuentas e Información No Financiera.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchMadrid, SpainHQ recorded Oct 1, 20261-102 contacts →

Exact match

“Somos una empresa de asesoramiento integral que presta los siguientes servicios Asesoría fiscal - contable - laboral.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchMadrid, SpainHQ recorded Oct 1, 20261-102 contacts →

Exact match

“Gestión de Subvenciones y Asesoramiento Financiero”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchMadrid, SpainHQ recorded Oct 1, 20261-102 contacts →

Exact match

“RIVERA-DIÁNEZ AUDITORES S.L.P is an accounting company based out of Madrid, Spain.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchMadrid, SpainHQ recorded Oct 1, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13Exact matchMadrid, SpainHQ recorded Oct 1, 202611-501 contacts →

Exact match

“Javier Bullón Consulting cuenta con más de 20 de años de experiencia acreditada en la asesoría contable, fiscal, laboral, mercantil y civilde todo tipo de organizaciones y…”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchMadrid, SpainHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase

Showing 14 of 48 accounting firms for international nonprofits based in Madrid, Spain

See the full list, filter by size, metro and specialty, and access 28 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Accounting firms for international nonprofits based in Madrid, Spain at a glance

As of Oct 1, 2026
6.6%Verified-email coverage
8.9Average contacts per company
1-10Median size (employees)
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
32
11-50
13
51-200
2
1,001-5,000
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 48 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 “accounting firms for international nonprofits” 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 28 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 October 1, 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.

Accounting firms for international nonprofits 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 “accounting firms for international nonprofits”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many accounting firms for international nonprofits are there based in Madrid, Spain?

RevenueBase identified 48 company matches for accounting firms for international nonprofits associated with Madrid, Spain as of October 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?

MGI Audicon & Partners tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in Spain has the most accounting firms for international nonprofits?

Madrid leads Spain with 48 company records, followed by Barcelona (38) and Malaga (10).

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 28 professional contacts with verified work emails tracked across these 48 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 October 1, 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.