The professional services sector in Spain is experiencing an unprecedented dynamic moment. During the year 2025, firms specialized in auditing, consulting, legal and transactions have jointly overcome the barrier of €5.5 billion, an increase of 10% over the previous year. This growth is driven, to a large extent, by the growing interest of venture capital in the professional sector.
Changes in ranking: Evolution of the 'Top Ten' in 2025
The panorama of the ten leading firms has experienced significant movements in the last exercise, highlighting the diversification of services and integration processes:
- Afianza: is the great novelty of the exercise, bursting hard into the tenth position of the ranking. With a turnover of 83 ́2 million euros, it has obtained an increase of 53 ́2% over the previous year.
Afianza's Milestone: 53% Exponential Growth
Afianza has been the most prominent entry in the top ten of the professional sector. With a turnover of 83.2 million euros, the firm has recorded an extraordinary growth of 53.2% compared to the previous year. This meteoric rise is based on two strategic pillars:
- Mastery of the Legal and Tax Area: this segment contributes 74.7 million euros to the business, with a growth of 54.3%.
- Consolidation strategy: During 2025, Afianza integrated fifteen professional firms, strengthening its operating muscle and its presence in the national market.
The closure of this exercise confirms that the consulting and auditing sector in Spain not only grows in volume, but is transformed into more robust and attractive structures for institutional investment.
The rise of medium-sized firms and the attraction of investment funds
Although the Big Four maintain their leadership, the highest rate of growth is recorded in the medium-sized auditors. These firms reached revenues of 1,406 million euros, growing by 12.5%, consolidating the positive trend of the previous year.
The closure of this exercise confirms that the consulting and auditing sector in Spain not only grows in volume, but is transformed into more robust and attractive structures for institutional investment.
- You can read the full article at: Medium-sized firms exceed 1.4 billion in full ‘boom’ investor Companies
