AEAT-Prosecution Agreement 2026: Enhanced Investigative Power Against Money Laundering and Corruption

Key data

The State has just expanded its investigative muscle in economic matters. The AEAT and the State Prosecution Service have formalized an agreement—effective from June 30, 2026 and published in the BOE on August 1—that creates a new AEAT Support Unit to assist the Anti-Drug Prosecution in investigations of drug trafficking and money laundering. This agreement complements the existing collaboration with the Anti-Corruption Prosecution, which has been operating since 1996 with its own tax support unit.

The agreement is not a cosmetic change: it puts at the disposal of prosecutors specialized human, technical and training resources in financial, tax and accounting matters to investigate complex economic crimes. For companies, advisors and executives, the signal is clear: criminal investigations into illegal economy and corruption will be more effective and faster.

What does this regulation establish?

The agreement articulates two axes of collaboration between the AEAT and the Public Ministry:

The resources that the AEAT puts at the disposal of the Prosecution are of three types:

• Human resources: specialized tax officials who act as experts or technical advisors in criminal investigations.
• Technical resources: access to tools, databases and financial analysis systems of the tax administration.
• Training resources: specialized training in financial, tax and accounting matters to support prosecutors' work.

The objective is for prosecutors to access highly specialized technical knowledge—which normally does not form part of a prosecutor's legal profile—to dismantle complex financial structures linked to organized crime.

Economic and operational impact

For the private sector, the impact of this agreement is not measured in fees or new direct obligations, but in investigative risk. These are the relevant operational changes:

• Greater effectiveness in detecting money laundering: anti-drug prosecutors will now have the same level of tax technical support that anti-corruption prosecutors have had since 1996. This reduces the time and complexity of financial investigations.
• More sophisticated financial analysis: the AEAT provides the capacity to cross-reference tax, asset and accounting data that is difficult to replicate from the defense without equivalent preparation.
• Expanded deterrent effect: the extension of the model—which has been operating for 30 years with the Anti-Corruption Prosecution—to the field of drug trafficking and money laundering represents a qualitative leap in pressure on illegal financial structures.
• Risk for companies in high-cash sectors: hospitality, construction, transport, real estate and other sectors with high cash circulation may be subject to greater scrutiny in criminal investigations linked to money laundering.

Who does it affect?

• Anti-Drug Prosecution: obtains for the first time an AEAT Support Unit specialized in its financial investigations.
• Anti-Corruption Prosecution: consolidates and strengthens the existing collaboration since 1996.
• AEAT: assumes new responsibilities to support criminal action, expanding its role beyond collection and tax inspection.
• Companies and individuals investigated for economic crimes: face a State with greater technical capacity in investigations of drug trafficking, money laundering, corruption and organized crime.
• Tax advisors, criminal lawyers and compliance officers: must know the new investigative scope to properly advise clients at risk.
• Sectors with high exposure to money laundering: real estate, hospitality, construction, transport and any activity with significant cash flows.

Practical example

Imagine a construction company that is being investigated by the Anti-Drug Prosecution for alleged participation in a money laundering network from drug trafficking. Until now, anti-drug prosecutors relied mainly on their own legal resources to analyze the company's accounting, cash flows and corporate structures.

With the new agreement in force since June 30, 2026, that same Anti-Drug Prosecution can request the support of the new AEAT Unit, whose specialized tax officials will analyze the company's accounting, cross-reference tax and asset data, and identify inconsistencies between declared activity and actual money flows. The same model that has been operating for 30 years for the Anti-Corruption Prosecution—and which has proven effective in complex corruption cases—is now also applied to the field of drug trafficking and money laundering.

For the defense lawyer or compliance officer of that company, this means that the investigation will have first-rate tax-technical support from the outset.

What should companies do now?

1. Review compliance and money laundering prevention programs: if your company operates in high-risk sectors (real estate, construction, hospitality, transport), update your internal protocols in light of the State's investigative reinforcement.
2. Audit cash flows and corporate structures: any inconsistency between declared activity and actual money movements can be detected more easily by the new AEAT-Anti-Drug Prosecution Unit.
3. Consult with lawyers specialized in economic criminal law: if your company is or may be under investigation, the new agreement changes the level of technical sophistication of the State. The defense must prepare accordingly.
4. Train the compliance and finance team: those responsible for regulatory compliance must understand the scope of this agreement to identify risks and act preventively.
5. Document all operations correctly: documentary traceability is the best defense against investigations that combine tax and criminal analysis.

Official source

Consult complete regulation in official source

Notice: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-16810