Company lists · Data refreshed September 2026
Top 25 Audit and assurance firms based in Portugal
RevenueBase identified 100 audit and assurance firms headquartered in Portugal as of September 2026 and tracks 1,192 professional contacts across them, including 359 with verified work emails. Lisboa is the largest hub.
This list covers audit and assurance firms headquartered in Portugal, 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 19, 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 audit and assurance firms based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 291 contacts → | ||||
Indirect evidence “A BDO é a 5ª maior rede internacional de Auditoria e Consultoria, com 870 escritórios em 169 países e mais de 94 900 colaboradores.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 85 contacts → | ||||
Indirect evidence “Somos parceiros dos nossos clientes, assegurando o rigor e a excelência técnica na prestação de serviços de auditoria, consultoria e fiscalidade.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 25 contacts → | ||||
Indirect evidence “Despite being a young company, C.'s origin dates back to 1997, now gaining new momentum with a renewed motivation and a multidisciplinary team that brings together different but…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 24 contacts → | ||||
Indirect evidence “At Nexia Santos Carvalho & Associados we are truly different.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 19 contacts → | ||||
Partial evidence “Mission: Issue credible opinions and provide value added solutions that act as a leverage factor in the decision making process through audit and consulting services…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 19 contacts → | ||||
Indirect evidence “A essência dos nossos serviços assenta na superação das expetativas dos nossos clientes!” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 19 contacts → | ||||
Indirect evidence “O nosso objetivo é, lado a lado, com o cliente encontrar soluções que acrescentem valor ao seu negócio.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 17 contacts → | ||||
Indirect evidence “A TCC & ASSOCIADOS visa garantir de forma independente e proactiva o acesso a informação fiável e rigorosa, tempestiva e adequada a cada Cliente, criando valor e suportando o…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 14 contacts → | ||||
Indirect evidence “A Sociedade tem por objecto a Revisão Legal de Contas, a Auditoria Financeira às Contas e aos serviços relacionados de empresas ou de outras entidades e de quaisquer funções que…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 contacts → | ||||
Indirect evidence “Fundada em novembro de 1989 por José Maria Azevedo Rodrigues, a ABC – Azevedo Rodrigues, Batalha, Costa & Associados, SROC, Lda.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 13 contacts → | ||||
Indirect evidence “Organização que se dedica à prestação de serviços de Auditoria e Revisão Legal das Contas, Fiscalidade, Consultoria e Serviços em regime de outsourcing (contabilidade, recursos…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 contacts → | ||||
Indirect evidence “Em Portugal desde 1984, a Moore é uma Sociedade de Revisores Oficiais de Contas, inscrita na Ordem dos Revisores Oficiais de Contas e registada como auditor na Comissão do Mercado…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 12 contacts → | ||||
Indirect evidence “Na BMS, apoiamos organizações a crescer de forma sustentável, com equipas especializadas que prestam serviços em Auditoria, Consultoria Financeira e Consultoria Fiscal.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 8 contacts → | ||||
Indirect evidence “HISTÓRIA A nossa história remonta aos anos 90, altura em que António Belém e António Gonçalves abraçaram a profissão de Revisores Oficiais de Contas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 contacts → | ||||
Indirect evidence “A SAVILE (entidade legal: Salvador e Falcato, Sroc, Lda) possui a capacidade técnica e de trabalho, os valores de rigor e confiança de uma BIG4 ao que adicionamos a proximidade e…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 8 contacts → | ||||
Indirect evidence “Firma de auditoria/revisão que tem como objectivo prestar serviços de qualidade nas actividades de auditoria, consultoria financeira e fiscalidade.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Indirect evidence “Desde junho de 2013 que construímos uma equipa e uma rede de parcerias sólidas que nos permitem prestar um serviço especializado e adequado a cada um dos nossos clientes.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Indirect evidence “A Armando Magalhães, Carlos Silva & Associados, SROC é uma Sociedade de Revisores Oficiais de Contas, inscrita na Ordem dos Revisores Oficiais de Contas sob o n.º 245 e na CMVM…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 6 contacts → | ||||
Indirect evidence “A sociedade Ricardo Pereira & Associados – SROC, Lda.(RPA) desenvolve a sua atividade desde 2011, inicialmente sob a forma individual e depois sob a forma societária.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Indirect evidence “Somos uma equipa multi-disciplinar e flexível que, mantendo como core business a auditoria financeira, atua também nos mercados de consultoria financeira e fiscal e avaliação de…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Indirect evidence “Com uma vasta experiência na prestação de serviços especializados de Consultoria e Contabilidade, fornecemos ferramentas fundamentais de apoio à gestão através do aconselhamento…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Indirect evidence “A MPP - M.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Indirect evidence “Sociedade de Revisores Oficiais de Contas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 contacts → | ||||
Indirect evidence “A função de auditoria visa conferir credibilidade às demonstrações financeiras, assegurando a todos os stakeholders que a informação produzida se encontra isenta de distorções…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “Na CF5 dedicamo-nos à consultoria contabilística, auditoria e à gestão financeira das empresas.” Source: RevenueBase Database · checked Sep 19, 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: audit and assurance firms. 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 audit and assurance firms.
- Partial evidence
- Its own public description names part of audit and assurance firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name audit and assurance firms. 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 100 audit and assurance firms based in Portugal
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Audit and assurance firms based in Portugal at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Portugal, so it is reported there. Company counts and contact totals on this page are exact for Portugal, over 100 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 audit and assurance 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 Portugal whose own description of what they do matches “audit and assurance 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 audit and assurance 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 audit and assurance firms, and records with no verified work email. Companies headquartered outside Portugal 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, 359 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 19, 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.
Audit and assurance firms by metro
- Audit and assurance firms in Lisboa28
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 audit and assurance 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 audit and assurance firms are there based in Portugal?
RevenueBase identified 100 audit and assurance firms headquartered in Portugal 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?
BDO Portugal, headquartered in Lisboa, tops this list with the largest team on record.
Which city has the most audit and assurance firms?
Lisboa leads with 28 headquartered companies, followed by Porto (15) and Coimbra (4).
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 359 verified decision-maker contacts tracked across these 100 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 19, 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.
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