Company lists · Data refreshed September 2026
Top 25 Accounting and tax outsourcing companies based in Portugal
RevenueBase identified 555 accounting and tax outsourcing companies headquartered in Portugal as of September 2026 and tracks 2,873 professional contacts across them, including 885 with verified work emails and 109 with mobile numbers. Lisboa is the largest hub.
This list covers accounting and tax outsourcing companies 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 22, 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 accounting and tax outsourcing companies based in Portugal
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 460 contacts → | ||||
Strong evidence “Neyond was established in 2004, with the goal of providing business consulting, IT consulting and strategic business process outsourcing services in accounting, financial, tax…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 303 contacts → | ||||
Partial evidence “Fundada em junho de 1982, a Conceito dedica-se à prestação de serviços de outsourcing nas áreas de Contabilidade, Fiscalidade, Consultoria, Processamento Salarial, Tesouraria e…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 60 contacts → | ||||
Indirect evidence “Empresa especializada na prestação de serviços de Apoio à Gestão Empresarial A laborar desde 2011, a EB Consultores posiciona-se no mercado como uma empresa especializada na…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 41 contacts → | ||||
Indirect evidence “Born in 2009, the DNS Business Partners Ltd (hereinafter "DNS Business Partners") has established itself as an entity that specializes in supporting the financial management of…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 25 contacts → | ||||
Partial evidence “At All Finance Matters we ensure peace of mind when it comes to managing tax obligations in Portugal.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 22 contacts → | ||||
Partial evidence “We are a consulting firm, acting in many areas of business and tax advisory.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 20 contacts → | ||||
Indirect evidence “A LXgest tem como visão ser uma organização de referência nos serviços de gestão a empresas em especial nos serviços de contabilidade e consultoria.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 19 contacts → | ||||
Indirect evidence “A essência dos nossos serviços assenta na superação das expetativas dos nossos clientes!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 19 contacts → | ||||
Indirect evidence “Joongle provides specialized solutions for businesses seeking a strategic partner in Portugal.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 17 contacts → | ||||
Strong evidence “Similae Business Services provides tax advisory, accounting, and business strategy services to small and mid- sized emerging and established businesses.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 17 contacts → | ||||
Indirect evidence “A BKO – Back Office S.A.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 15 contacts → | ||||
Partial evidence “We help your business grow with rigorous, reliable and close accounting services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 15 contacts → | ||||
Indirect evidence “A Gestante - Gabinete de Consultoria e Gestão, S.A, fundada em 1980, dedica-se fundamentalmente à prestação de serviços nas áreas de consultadoria, financeira, contabilística…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 14 contacts → | ||||
Indirect evidence “Today, it is not enough to create great ideas and products; we need great businesses.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 14 contacts → | ||||
Indirect evidence “A Hipp Value presta Serviços de Contabilidade, Fiscalidade, Tesouraria e Consultoria de Gestão.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 contacts → | ||||
Indirect evidence “COLLEGIUM presta um conjunto completo de serviços a empresas internacionais, nacionais e locais, bem como a particulares, incluindo contabilidade, processamento de salários e…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 13 contacts → | ||||
Indirect evidence “A GESNORT é uma empresa de prestação de serviços de assessoria em contabilidade, fiscalidade e apoio à gestão, capaz de dar resposta às novas exigências de uma sociedade em…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Indirect evidence “A GESVALOR iniciou a atividade em 2011 e é especializada na prestação de serviços de contabilidade e apoio à gestão a PME, cujo principal objetivo é ajudar o cliente a desenvolver…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 13 contacts → | ||||
Partial 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 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 12 contacts → | ||||
Indirect evidence “We offer a wide range of services for our clients, with continuous and effective support, customized to different types of customers and their needs.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 11 contacts → | ||||
Strong evidence “Speedwell is an accounting, tax compliance, payroll and corporate administration services dedicated to the success of its clients.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 contacts → | ||||
Indirect evidence “Num país que vive uma profunda mudança em termos económicos e do seu tecido empresarial, a Know2Grow pretende ser um parceiro para as PME, fornecendo informação contabilística…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 contacts → | ||||
Indirect evidence “A VERBOCHAVE está empenhada na criação de valor dos seus clientes, através da prestação de serviços de consultoria e assessoria fiscal e contabilística, numa efetiva relação…” Source: RevenueBase Database · checked Sep 22, 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: accounting and tax outsourcing companies. 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 accounting and tax outsourcing companies.
- Partial evidence
- Its own public description names part of accounting and tax outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name accounting and tax outsourcing companies. 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 555 accounting and tax outsourcing companies based in Portugal
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Accounting and tax outsourcing companies based in Portugal at a glance
As of Sep 22, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 24.0dCompany record updated
Median 77.0dHow 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 accounting and tax outsourcing companies, 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 “accounting and tax outsourcing companies”. 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 accounting and tax outsourcing companies), 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 accounting and tax outsourcing companies, 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, 885 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 22, 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.
Accounting and tax outsourcing companies by metro
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 accounting and tax outsourcing companies, 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 accounting and tax outsourcing companies are there based in Portugal?
RevenueBase identified 555 accounting and tax outsourcing companies 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?
Neyond, headquartered in Portugal, tops this list with the largest team on record.
Which city has the most accounting and tax outsourcing companies?
Lisboa leads with 79 headquartered companies, followed by Porto (40) and Lisbon (13).
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 885 verified decision-maker contacts tracked across these 555 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 22, 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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