We will be
with you in an
in an Attosecondo! (split second)
(as = 10⁻¹⁸ seconds … an extremely short time!)
The Time to Make a Difference
The name Attosecondo recalls an infinitesimal unit of time in physics, a symbol of our ability to act with precision, speed and effectiveness. As in a play or in a court case, our role is to intervene at crucial moments, supporting clients and institutions in decisive phases. "Attosecondo" is a symbol of renewal, continuity, creativity, attitude to solution and support. "Act" is a formal moment, commitment, contract, decision. "Secondo" is a new beginning, evolution, restart, in the second act the complexities are resolved. We think that our place is next to the customer, when it is necessary to understand, choose, transform, with precision, imagination and vision. Our business areas focus on high added value services
Massimo Guidi Co-Founder 
Fabrizio Vietri Co-Founder The Attosecondo Commercialisti Associati firm was born from a true friendship, grown over time and evolved into a professional collaboration. Fabrizio Vietri and Massimo Guidi, two public accountants, members of the Milan Register of Chartered Accountants, who have known each other for a long time and who, after thirty years of separate yet complementary experiences, decided to join their skills and vision.
What We Do
We offer highly specialized consultancy with a focus on high-value-added services.
Establishment of holding companies and corporate group structuring
Corporate governance at both national and international levels
Appropriate organizational, administrative, and accounting structures in accordance with the Crisis Code
Administrative accounting compliance
Implementation of internal control systems (tax control framework)
Industrial, recovery and business continuity plans
Support for management in the decision-making process
Protection of personal and corporate assets
Tax litigation and deflationary procedures
Court-appointed and party-appointed technical consultancy
Expert reports, technical assessments, and professional opinions
Each intervention is conducted with precision, method, and a critical approach, in line with the highest quality standards.
For Whom
We collaborate with a diverse range of clients, chosen for their specific needs:
Corporations
corporate structuring, governance, industrial planning, and compliance;
Individuals
asset protection, inheritance planning, and investment strategies;
Courts
technical consulting and economic asset evaluations;
Professional firms
integration with specialized services or joining our network;
Law firms
interdisciplinary activities on accounting, tax and corporate issues;
Holdings and complex structures
accounting and administrative support.
Our Association serves as a selective and qualified network, open to collaboration, based on excellence and mutual respect for professional identities.
Our Approach
Each member retains their autonomy while benefiting from the strength of a well-structured professional network. We promote the accountant as a competent guide, capable of simplifying complexities without diminishing their essence, interpreting intricate matters with rigor, and accompanying clients with discretion and awareness. We believe in a results-oriented consulting model based on active listening, transparency, and precision. Our organization is open yet selective, ready to collaborate with firms that share our methods, values, and quality standards.
This reflects how we understand the profession: human-centered, rigorous, and progressive.
The Illusion of Simplicity as a Form of Defense
We live in an era marked by increasing systemic complexity, fueled by technological evolution and economic globalization. Processes intertwine, variables increase, and regulatory obligations overlap. Yet, in view of this intricate scenario, the most common response is often a dangerous tendency toward approximation. Instead of developing effective solutions, there is a tendency to over simplify and reduce complexity to manageable schemes, often compromising quality. This is an understandable, almost defensive reaction: when faced with something that cannot be controlled, we tend to minimize it. But this shortcut comes with a cost. In business processes, especially administrative, accounting, and reporting processes, it causes serious damages, such as mistakes, inconsistencies, exposure to tax and legal risks, as well as loss of efficiency in the internal control system.
The Culture of Control and Precision as Competitive Levers
Now more than ever, proper business management requires a culture of precision. We are in a context where accounting, financial statements, and tax returns are no longer just compliance obligations: they are the language through which a company interacts with a system that does not tolerate inaccuracy. Proactive supervision is needed along with a method, awareness, and a culture of control. Being precise is not a luxury, but a value. By managing its internal processes, particularly in administrative-accounting and tax areas, a company gains a significant competitive advantage: greater reliability, lower risks, and improved relationships with the system. In this context, it is no longer possible for a professional to only play the role of technical executor, but must become a educator of systemic culture, a promoter of attention and rigor, a link between the complexity of the system and the company’s necessary operational simplification.
Accuracy as a Strategic Choice
The association was therefore established to respond to the need to promote, support, and spread a culture of accuracy, conscious control, and professional responsibility, as a way to counteract the common practice of trivializing complexity. Our goal is to challenge the habit of superficiality and promote an approach based on responsibility, analysis, and attention. Accuracy is an advanced form of organizational intelligence today. In the business world, precision is not a technicality, but the foundation of trust.
It's what guarantees transparency, legality, and sustainability. A credible dialogue with the market or institutions cannot exist without precision. Our purpose is cultural before being technical: networking among professionals, sharing tools, expertise, and vision, to guide companies in developing a governance model founded on rigor, competence, and ethics of detail.
For this reason, we choose to value attention, method, and depth, because we are convinced that the quality of the future is played out in the care of the present. We promote the figure of a public accountant as a competent and aware guide: a professional capable of listening, guiding, and simplifying without ever trivializing. We believe in a results-oriented consultancy model, based on listening, transparency, and rigor.
Professional Section
The operational heart of the Association. Within it, each member can:
Share Projects and Best Practices
Participate in thematic workgroups
Access continuous updating tools
Contribute to the creation of scientific and regulatory content
Offer and receive professional peer support
The Section also promotes the organization of seminars, workshops, and opportunities for discussion, with the aim of improving the quality of professional activity and strengthening the shared identity.
Our Manifesto
We are professionals, but above all, we are people. Our foundation lies in a true friendship that we enriched by sharing the professional experience gained over 30 years of activity. We believe in competence and the ability to tackle complexity with rigor and a comprehensive vision. For us, the details make the difference. We collaborate rather than compete, working alongside other firms to create meaningful solutions. We are technicians, but not bureaucrats. We act with and responsibility, driven by concrete goals: to defend our clients' interests, protect assets, and assist in the organization of businesses and corporate groups. We value what truly matters, with care, method, and precision.