Company lists · Data refreshed September 2026
Top 25 Tax law firms based in Spain
RevenueBase identified 2,887 tax law firms headquartered in Spain as of September 2026 and tracks 26,313 professional contacts across them, including 2,850 with verified work emails and 184 with mobile numbers. Madrid is the largest hub.
This list covers tax law firms headquartered in 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 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 | Partial evidence | 434 contacts → | |||
“RCD is a global, dynamic and innovative law firm providing comprehensive legal advice.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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. | |||||
| 5 | 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. | |||||
| 6 | 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. | |||||
| 7 | 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. | |||||
| 8 | Indirect evidence | 181 contacts → | |||
“Nuestras asesorías en Cartagena y Murcia están altamente capacitadas para realizar un servicio global de asesoramiento laboral, fiscal y contable.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Indirect evidence | 137 contacts → | |||
“En AGM Abogados queremos ser aquello que nuestros clientes esperan de nosotros.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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. | |||||
| 11 | Partial evidence | 101 contacts → | |||
“VILAR RIBA is a business group created and structured to offer full advice, both to companies and individuals, in any field of professional services: • Tax advice • Legal advice •…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Indirect evidence | 97 contacts → | |||
“Bienvenid@ a BPV.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Indirect evidence | 97 contacts → | |||
“VENTO es una firma de servicios profesionales que ofrece un servicio de asesoramiento jurídico, fiscal y de consultoría de negocio, especializado y de calidad contrastada, para…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Indirect evidence | 94 contacts → | |||
“At Lexidy, we redefine legal services to deliver seamless, client-centered care across Spain, Portugal, Italy, France, Greece, and Mexico.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Strong evidence | 90 contacts → | |||
“Augusta Abogados is a professional law firm specialised in commercial law, tax, restructuring of companies, labour law, air and space law and procedural law, amongst others, with…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 88 contacts → | |||
“JDA es un grupo de empresas orientadas a la prestación de servicios profesionales, con asentamiento en la provincia de Barcelona.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Partial evidence | 79 contacts → | |||
“Toda & Nel-lo is a multidisciplinary law firm specialized in legal advice and defense to companies and individuals, both in public and private spheres.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | Partial evidence | 77 contacts → | |||
“Cases & Lacambra is a Client focused international law Firm, with a deep commitment to offer the best comprehensive advice in business law.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Partial evidence | 76 contacts → | |||
“ARPA Abogados Consultores is a law firm established in 1991 in Pamplona.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Indirect evidence | 75 contacts → | |||
“Osborne Clarke es un despacho de abogados internacional con más de 330 socios y más de 1.250 abogados repartidos en 26 sedes en Europa, EE.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Indirect evidence | 73 contacts → | |||
“Despacho compuesto por abogados y asesores fiscales, expertos en distintas ramas del Derecho, fundamentalmente Mercantil, Fiscal, Procesal-Concursal, Sector Público y Laboral.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Strong evidence | 70 contacts → | |||
“Delvy Law & Finance is an innovative law firm specialised in providing strategic legal and tax advice for entrepreneurs, companies and investors in tech field.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Indirect evidence | 63 contacts → | |||
“PFS Grupo es una firma de servicios profesionales avanzados; Legal/Tributario, Cumplimiento Normativo, Sostenibilidad, Transformación empresarial, Soluciones Tecnológicas y…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 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. | |||||
| 25 | Indirect evidence | 59 contacts → | |||
“FILS presta a sus clientes un asesoramiento de alto valor añadido a lo largo de todo el recorrido empresarial: en la creación y desarrollo del negocio (área mercantil, área…” 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 2,887 tax law firms based in Spain
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Tax law firms based in Spain at a glance
As of Sep 6, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 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 Spain 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, 2,850 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
- 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 Spain?
RevenueBase identified 2,887 tax law firms headquartered in 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 2,850 verified decision-maker contacts tracked across these 2,887 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.
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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.