Company lists · Data refreshed September 2026
Top 24 Professional services firms based in Porto, Portugal
RevenueBase identified 82 professional services firms headquartered in Porto, Portugal as of September 2026 and tracks 451 professional contacts across them, including 134 with verified work emails. Lisboa is the largest hub.
This list covers professional services firms headquartered in Porto, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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.
The 24 largest professional services firms based in Porto, Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 29 | ||||
“A CENSUS possui mais de 27 anos de experiência no apoio a empresas e conta com uma rede de 13 escritórios distribuídos pelo país.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 24 | ||||
“At Nexia Santos Carvalho & Associados we are truly different.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 18 | ||||
“AccruePartners assumes itself as a Firm of excellence in the provision of multidisciplinary services in the areas of tax and management consulting.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 17 | ||||
“Nascida da associação de profissionais com uma intensa carreira de auditoria e consultadoria de gestão desenvolvida em firmas internacionais do sector, a AGS Consulting tem como…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 14 | ||||
“A All the Way – Business Consulting, Lda é uma empresa de consultoria financeira e fiscal.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 13 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 12 | ||||
“Desde a sua criação, a Filiconta tem vindo a prestar serviços de excelência na área do apoio à gestão.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 8 | ||||
“Beneficiando de mais de 25 anos de experiência do seu promotor como gestor e membro de órgãos de administração de várias empresas, a AContar - Accounting and Financial Services…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 8 | ||||
“AdC Contabilidade is a consulting company where the main activity is to provide tax advisory services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 | ||||
“Constituída em Março de 1998.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 | ||||
“Apoio Contabilístico e Fiscal às empresas, execução de contabilidade e salários, planificação e implementação de projectos na área das tecnologias de informação, estudos económico…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 | ||||
“A CASI – Contabilidade, Fiscalidade e Consultoria, Lda, aposta num relacionamento individualizado e diferenciado com “qualidade de topo” a micro, pequenas e médias empresas.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 | ||||
“We are a multidisciplinary group of consultants with a strong multinational culture that brings together a vast track record of success, offering a wide range of business support…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 | ||||
“Contabilidade assessoria fiscal diagnóstico económico e financeiro processamento de salários assessoria laboral apoio à criação de empresas” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3 | ||||
“A CONSULTINGCAST é uma "trusted advisor" que presta serviços de assessoria nas áreas de Corporate Finance, Turnaround Consulting, Business Broker, Auditoria e Consultoria fiscal…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2 | ||||
“We provide accounting, financial and consulting services to small and medium enterprises.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | Percentagem PromissoraIndirect evidence | 2 | |||
“Novo projecto, dirigido por profissionais de muita experiência e focado na contabilidade de empresas e singulares.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2 | ||||
“A Sinerconta, é uma empresa de contabilidade e consultoria, implementada no mercado há 25 anos, que conta com uma equipa de profissionais especializados e tem como missão…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 | ||||
“Somos um gabinete de contabilidade sediado no Porto há mais de trinta anos.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 | ||||
“A Lead Finance dedica-se à prestação de serviços de consultoria financeira a particulares e empresas, nacionais e internacionais, tendo sede no Porto.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Golden AccountIndirect evidence | 1 | |||
“Os impostos são incontornáveis na sociedade em que vivemos, no entanto e numa área em constante mudança, é possível muitas vezes atenuar a carga fiscal, para tal é necessário…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Excellentia AccountingIndirect evidence | 1 | |||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 | ||||
“Serviços de Consultoria, Contabilidade, Gestão Recursos Humanos, 3º Sector, Avaliação de Empresas, Empresas Familiares” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 24 of 82 professional services firms based in Porto, Portugal
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Professional services firms based in Porto, Portugal at a glance
As of Sep 5, 2026Companies by employee count
Email recency for this list is measured across the whole Portugal list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Porto, over 82 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 professional services 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 Porto, Portugal whose own description of what they do matches “professional services 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 professional services firms, and records with no verified work email. Companies headquartered outside Porto 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, 134 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 5, 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.
Professional services firms by metro in Portugal
- Professional services firms in Lisboa164
- Professional services firms in Porto82
- Professional services firms in Lisbon28
Frequently asked
How many professional services firms are there based in Porto, Portugal?
RevenueBase identified 82 professional services firms headquartered in Porto, 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?
Census Accounting Services, headquartered in Porto, tops this list with the largest team on record.
Which city has the most professional services firms?
Lisboa leads with 164 headquartered companies, followed by Porto (82) and Lisbon (28).
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 134 verified decision-maker contacts tracked across these 82 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 5, 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.
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