In the coming years, regulatory compliance will become a top priority for companies operating in Spain. The Anti-Fraud Law 2025, passed in December 2023, represents a milestone in the way financial information must be recorded and reported. Its main goal is clear: to eliminate tax evasion and ensure that every business transaction is accurate, traceable, and tamper-proof.
Unlike other tax reforms that primarily affect large corporations, this regulation applies equally to self-employed professionals, SMEs, and advisory firms. No business will be exempt, making early preparation essential to avoid penalties and secure business continuity.
Core objectives of the Anti-Fraud Law 2025
The law aims to put an end to opaque practices such as double accounting or the manipulation of records through unauthorized software. To achieve this, it sets out several key obligations:
- Real-time invoicing: every invoice issued must be automatically reported to the Spanish Tax Authority, leaving no room for hidden operations.
- Ban on dual-use software: any program that allows the creation of parallel accounts or manipulation of financial data will be strictly prohibited.
- Immediate access for the Tax Authority: authorities will be able to review accounting data without delay or alteration.
- Full traceability of transactions: every entry must be recorded from its origin through to its final tax declaration, with no possibility of modification or deletion.
These measures strengthen transparency, protect the integrity of accounting systems, and foster a corporate culture based on trust and fiscal responsibility.
When will the law come into force?
The official start date was initially set for July 1, 2025, but several industry sources suggest a possible delay until January 2026. As there is no official confirmation yet, the safest approach for businesses is clear: start preparing now. Updating management software, reviewing internal processes, and training teams require time and planning.
Who will be affected?
The scope of the Anti-Fraud Law is broad and will directly impact:
- Self-employed professionals and SMEs with annual revenues under €6 million.
- Accounting and advisory firms, which will be responsible for ensuring that their clients’ records comply with the new rules.
- Software developers and distributors, who will need to adapt their solutions to the new certification requirements.
This wide application reflects the legislator’s intention to close every loophole that could enable fraudulent accounting practices.
Compliance requirements for businesses
To comply with the Anti-Fraud Law 2025, companies will need to implement certified management software that ensures:
- Immutable records of invoices and accounting entries.
- Complete traceability of every transaction.
- Secure data storage that prevents manipulation.
- Automatic reporting capabilities to the Tax Authority.
In addition, companies should reinforce their internal audit systems to detect and prevent attempts to alter or delete financial records unlawfully.
Penalties for non-compliance
The consequences of non-compliance are significant:
- Fines of up to €50,000 for companies using dual accounting systems.
- Fines of up to €150,000 for manufacturers or distributors of dual-use software.
These penalties highlight the determination of Spanish regulators to eradicate technological fraud once and for all.
Preparing ahead: The key to Compliance
Beyond avoiding fines, the Anti-Fraud Law 2025 should be seen as an opportunity to modernize accounting systems, improve efficiency, and build stronger trust with clients, partners, and investors.
At LEIALTA, we support companies through every stage of this process: from reviewing current accounting systems to implementing certified technological solutions, ensuring full compliance without disrupting day-to-day operations.
Adapting to this law is not just about meeting a legal requirement—it is about adopting a comprehensive compliance strategy that strengthens the company’s position in an increasingly demanding regulatory environment.
