Company lists · Data refreshed September 2026
Top 25 Advisory and outsourcing services based in Bilbao, Spain
RevenueBase identified 121 advisory and outsourcing services headquartered in Bilbao, Spain as of September 2026 and tracks 624 professional contacts across them, including 71 with verified work emails. Madrid is the largest hub.
This list covers advisory and outsourcing services headquartered in Bilbao, 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 23, 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 advisory and outsourcing services based in Bilbao, Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 31 contacts → | ||||
Indirect evidence “ekintzailetzan espezializatuta dagoen aholkularitza-enpresa bat da, prestakuntza eskaintzen ditugu, ordezkaritza daukagu- es una consultora especializada en.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 2 | 30 contacts → | ||||
Indirect evidence “Confianz es una asesoría y consultoría de empresas, fundada en 1994, con oficinas en Madrid, Bilbao y San Sebastián.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 3 | 21 contacts → | ||||
Indirect evidence “Somos una Asesoría contable, fiscal y laboral, dedicada a realizar la gestión integral necesaria para las sociedades, autónomos y personas físicas.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 4 | 20 contacts → | ||||
Indirect evidence “M.A.C.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 5 | 14 contacts → | ||||
Indirect evidence “Customer: • Aportando soluciones flexibles a tu estructura IT que ayuden a tu corporación a rentabilizar los negocios, a converger con los clientes y a aumentar la productividad…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 6 | 12 contacts → | ||||
Indirect evidence “El origen de nuestro Grupo se remonta a 1971, habiéndose ido incorporando, de forma paulatina, una cada vez más amplia gama de servicios profesionales orientados a cubrir las…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 7 | 10 contacts → | ||||
Indirect evidence “VK Comunicación se constituyó formalmente en el mes de diciembre de 1998, como iniciativa personal de Virginia Knörr Barandiaran, que en los años inmediatamente anteriores había…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 8 | 9 contacts → | ||||
Indirect evidence “Los integrantes del equipo de ACYP trabajamos día a día estrechamente con nuestros clientes, de forma que podamos ofrecerles un trato profesional a la vez que cercano y personal.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 9 | 8 contacts → | ||||
Indirect evidence “En AMS corporate asesoramos a empresas, acreedores, e inversores, en situaciones complejas desde 2002.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 10 | 7 contacts → | ||||
Indirect evidence “En BISCAY CONSULTING tenemos como prioridad reportar a las corporaciones ese mix tan difícil: • CALIDAD a través del conocimiento de la normativa, • RIGOR TÉCNICO que reporte…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 contacts → | ||||
Indirect evidence “En MB Asesores nuestro principal objetivo, presente desde nuestros comienzos en 2008, es acompañarte en todo momento, prestando servicios jurídicos y de asesoramiento integral…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Indirect evidence “El asesoramiento/implantación de todo tipo de procesos conducentes al Desarrollo de proyectos Estratégicos.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 13 | 6 contacts → | ||||
Indirect evidence “Serval Nervión lo formamos un gran equipo de profesionales con amplia y dilatada experiencia a través de la cual podemos adaptarnos a las exigencias de nuestros clientes…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Indirect evidence “Aquí no hay letra pequeña, HAY RESULTADOS.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 15 | 5 contacts → | ||||
Indirect evidence “Atarrabi Kide es un grupo de servicios profesionales, especializados en.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 contacts → | ||||
Indirect evidence “Planificación fiscal patrimonial y de empresas familiares- Asesoramiento jurídico, fiscal y recurrente de empresas y particulares- Asesoramiento sobre implicaciones tributarias en…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Partial evidence “HUB Advisory Partners nace del espíritu inquieto de varios profesionales con larga trayectoria el la estrategia de negocio y corporativa.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Indirect evidence “Asem Indafisa es el resultado de la fusión de dos despachos profesionales de trayectoria similar con más de 20 años de experiencia en el sector de asesorías y gestión de empresas.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Indirect evidence “Somos una empresa de servicios administrativos, jurídicos y económicos especializada en atender y solucionar las diversas necesidades y problemas de la pequeña y mediana empresa…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence “En Alium Consulting prestamos servicios de consultoría estratégica y operativa a empresas, asociaciones y a administraciones públicas, apoyando a nuestros clientes en:* la…” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “Consulting” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “Noranai Consulting is a company sited in the Basque Country, born in 2010.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “En Interalde somos una consultoría y asesoría en Bilbao que llevamos trabajando con pymes desde el año 2003.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Indirect evidence “Grupo Foretax es una asesoría profesional fundada en 1987 que ofrece soluciones tributarias integrales a sus clientes.” Source: RevenueBase Database · checked Sep 23, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence “Trentinort, ubicada en Bilbao y constituída en 1996 está formada por profesionales expertos en la implantación de soluciones tecnológicas para el mundo empresarial.” Source: RevenueBase Database · checked Sep 23, 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: advisory and outsourcing services. 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 advisory and outsourcing services.
- Partial evidence
- Its own public description names part of advisory and outsourcing services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name advisory and outsourcing services. 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 121 advisory and outsourcing services based in Bilbao, Spain
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Advisory and outsourcing services based in Bilbao, Spain at a glance
As of Sep 23, 2026Companies by employee count
Email recency for this list is measured across the whole Spain list rather than for Bilbao, so it is reported there. Company counts and contact totals on this page are exact for Bilbao, over 121 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 advisory and outsourcing services, 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 Bilbao, Spain whose own description of what they do matches “advisory and outsourcing services”. 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 advisory and outsourcing services), 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 advisory and outsourcing services, and records with no verified work email. Companies headquartered outside Bilbao 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, 71 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 23, 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.
Advisory and outsourcing services by metro in Spain
- Advisory and outsourcing services in Madrid1804
- Advisory and outsourcing services in Barcelona1088
- Advisory and outsourcing services in Valencia313
- Advisory and outsourcing services in Sevilla195
- Advisory and outsourcing services in Malaga170
- Advisory and outsourcing services in Zaragoza135
- Advisory and outsourcing services in Bilbao121
- Advisory and outsourcing services in Murcia121
- Advisory and outsourcing services in Alicante114
- Advisory and outsourcing services in Vigo101
- Advisory and outsourcing services in A Coruna73
- Advisory and outsourcing services in Granada71
- Advisory and outsourcing services in Valladolid68
- Advisory and outsourcing services in Girona62
- Advisory and outsourcing services in Cordoba59
- Advisory and outsourcing services in Santa Cruz De Tenerife59
- Advisory and outsourcing services in Las Palmas De Gran Canaria57
- Advisory and outsourcing services in Palma De Mallorca56
- Advisory and outsourcing services in Sant Cugat Del Valles50
- Advisory and outsourcing services in Marbella49
- Advisory and outsourcing services in Terrassa49
- Advisory and outsourcing services in Gijon44
- Advisory and outsourcing services in Sabadell44
- Advisory and outsourcing services in Lleida41
- Advisory and outsourcing services in Oviedo41
- Advisory and outsourcing services in Almeria38
- Advisory and outsourcing services in Palma38
- Advisory and outsourcing services in Elche37
- Advisory and outsourcing services in Seville37
- Advisory and outsourcing services in Santiago De Compostela36
- Advisory and outsourcing services in Santander35
- Advisory and outsourcing services in Pozuelo De Alarcon34
- Advisory and outsourcing services in Mataro33
- Advisory and outsourcing services in Badalona28
- Advisory and outsourcing services in Badajoz27
- Advisory and outsourcing services in Caceres27
- Advisory and outsourcing services in Tarragona27
- Advisory and outsourcing services in Alcobendas26
- Advisory and outsourcing services in Las Rozas De Madrid26
- Advisory and outsourcing services in Leon26
- Advisory and outsourcing services in Logrono26
- Advisory and outsourcing services in San Sebastian26
- Advisory and outsourcing services in Albacete25
- Advisory and outsourcing services in Castellon De La Plana25
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 advisory and outsourcing services, 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 advisory and outsourcing services are there based in Bilbao, Spain?
RevenueBase identified 121 advisory and outsourcing services headquartered in Bilbao, 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?
Bultz-Lan Consulting, headquartered in Bilbao, tops this list with the largest team on record.
Which city has the most advisory and outsourcing services?
Madrid leads with 1804 headquartered companies, followed by Barcelona (1088) and Valencia (313).
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 71 verified decision-maker contacts tracked across these 121 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 23, 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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