Company lists · Data refreshed September 2026
Top 25 Tax law firms based in Madrid, Spain
RevenueBase identified 583 tax law firms headquartered in Madrid, Spain as of September 2026 and tracks 13,739 professional contacts across them, including 1,205 with verified work emails. Madrid is the largest hub.
This list covers tax law firms headquartered in Madrid, Spain, 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 6, 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 tax law firms based in Madrid, Spain
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Indirect evidence | 5,114 contacts → | |||
“KPMG en España es una firma de servicios profesionales que ofrece servicios de auditoría, fiscales y de asesoramiento legal, financiero y de negocio con más de 2.700 profesionales…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | Strong evidence | 2,853 contacts → | |||
“Garrigues is an international legal and tax services firm that advises clients locally, regionally and globally from every angle of business law.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Indirect evidence | 293 contacts → | |||
“Somos un despacho de abogados referente en el asesoramiento jurídico empresarial, con un estilo propio, el #, que aplican nuestros más de 190 profesionales.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | Indirect evidence | 238 contacts → | |||
“Cremades & Calvo-Sotelo es una de las firmas de abogados más relevantes de España.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Indirect evidence | 207 contacts → | |||
“Montero Aramburu & Gómez-Villares Atencia nace en 2024 fruto de la integración de Montero Aramburu & Gómez-Villares Atencia, dos despachos con una amplísima trayectoria y…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Partial evidence | 192 contacts → | |||
“Bufete Barrilero y Asociados is one of Spain’s leading independent law firms engaged in the rendering of comprehensive legal advice services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Partial evidence | 108 contacts → | |||
“MAIO Legal is a law firm founded in 2011.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Indirect evidence | 62 contacts → | |||
“Vaciero es una firma profesional de servicios jurídicos, financieros y de auditoría para empresas e instituciones, con más de 30 años de experiencia.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Indirect evidence | 51 contacts → | |||
“En Ponter te damos cobertura total para que no tengas que ir a ningún otro sitio.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Indirect evidence | 47 contacts → | |||
“mavens significa expertos de confianza en una materia compleja.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Partial evidence | 46 contacts → | |||
“act legal Spain, traces its origins to Colón de Carvajal Abogados, a firm founded in 1985, which has always been dedicated to business law, with a particular focus on dispute…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Partial evidence | 44 contacts → | |||
“As attorneys, tax advisers, management and IT consultants and auditors, we are present with 110 own offices in around 50 countries.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Indirect evidence | 44 contacts → | |||
“Fundado en 2012 por Felipe Alonso y Ernesto García-Trevijano, quienes atesoran una amplia experiencia y reconocimiento en el mercado jurídico español, el empeño de GTA VILLAMAGNA…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Indirect evidence | 41 contacts → | |||
“Firma legal especializada en la abogacía de los negocios.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Partial evidence | 38 contacts → | |||
“TGS Edisa is a multidisciplinary firm that since 1988 is providing tax, accounting, legal an labor advisory services and, more recenfly, in fields such as digital consultancy and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 37 contacts → | |||
“Somos una asesoría que proporciona un servicio integral a empresas y profesionales en materia legal, fiscal y contable, laboral, mercantil y financiera.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Indirect evidence | 35 contacts → | |||
“QualityConta es una compañía de profesionales del derecho y la economía, fundada en 1987, que ofrece un servicio integral de consultoría, asesoramiento y gestión a empresas y…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | Indirect evidence | 33 contacts → | |||
“Laffer Abogados persigue un claro objetivo: acompañar al cliente en todas las fases jurídicas de su trayectoria, ofreciendo una dedicación personalizada y una atención constante a…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Indirect evidence | 31 contacts → | |||
“Amagna Legal es un despacho de abogados orientado a ofrecer asesoramiento jurídico con visión estratégica, rigor técnico y un alto compromiso profesional.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Partial evidence | 30 contacts → | |||
“We are a Spanish multidisciplinary boutique law firm with offices in Madrid.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Indirect evidence | 30 contacts → | |||
“EQUIPO ECONOMICO (Ee) is a professional services firm established in 2006, comprised of a qualified team of experts with a proven track record in taking strategic decisions in…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Indirect evidence | 29 contacts → | |||
“CORTÉS, ABOGADOS es una firma que tiene su origen en el Despacho fundado por el Abogado y Profesor de Derecho Procesal Matías Cortés Martín en 1932.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Indirect evidence | 29 contacts → | |||
“Larrauri & Martí Abogados somos un despacho de abogados constituido por más de 20 profesionales especializados en diferentes áreas jurídicas que cubren prácticamente todas las…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Indirect evidence | 26 contacts → | |||
“ESCALONA & DE FUENTES es un despacho independiente formado por un grupo de abogados con la formación jurídica y económica y la experiencia necesaria para poder ofrecer a sus…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | Indirect evidence | 25 contacts → | |||
“LEIALTA is a business consulting firm that supports companies in their key decisions, combining strategy, compliance and close advisory.” Source: company website · checked Sep 6, 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: tax law 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 tax law firms.
- Partial evidence
- Its own public description names part of tax law firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name tax law 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 583 tax law firms based in Madrid, Spain
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,205 reachable decision-makers.
Free signup · no credit card
Tax law firms based in Madrid, Spain at a glance
As of Sep 6, 2026Companies by employee count
Email recency for this list is measured across the whole Spain list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Madrid, over 583 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 tax law 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 Madrid, Spain whose own description of what they do matches “tax law 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 tax law 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 tax law firms, and records with no verified work email. Companies headquartered outside Madrid 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, 1,205 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 6, 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.
Tax law firms by metro in Spain
- Tax law firms in Madrid583
- Tax law firms in Barcelona380
- Tax law firms in Valencia115
- Tax law firms in Sevilla79
- Tax law firms in Malaga73
- Tax law firms in Alicante49
- Tax law firms in Bilbao43
- Tax law firms in Marbella43
- Tax law firms in Murcia39
- Tax law firms in Zaragoza36
- Tax law firms in Granada33
- Tax law firms in Cordoba30
- Tax law firms in A Coruna27
- Tax law firms in Palma26
- Tax law firms in Palma De Mallorca26
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 tax law 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 tax law firms are there based in Madrid, Spain?
RevenueBase identified 583 tax law firms headquartered in Madrid, Spain 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?
Kpmg España, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most tax law firms?
Madrid leads with 583 headquartered companies, followed by Barcelona (380) and Valencia (115).
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 1,205 verified decision-maker contacts tracked across these 583 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 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 583 tax law firms based in Madrid, Spain. Start with a free account, no credit card.
Download this list →Related lists
Tax law firms by geography
- Tax law firms based in the United States
- Tax law firms based in Brazil
- Tax law firms based in Germany
- Tax law firms based in Spain
- Tax law firms based in Italy
- Tax law firms based in the United Kingdom
- Tax law firms based in Australia
- Tax law firms based in France
- Tax law firms based in Canada
- Tax law firms based in the Netherlands
- Tax law firms based in Mexico
- Tax law firms based in Poland
Browse the directory
Browse: Companies home · Tax law firms in Spain · All Spain lists · All Tax law firms lists · New lists
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.