PrimeGlobal Welcomes Fiduciaria Antonini SA
PrimeGlobal News
April 30, 2026 - Fiduciaria Antonini SALugano, Switzerland - PrimeGlobal is delighted to welcome Fiduciaria Antonini SA as its newest member firm in the EMEA region.
Founded in 1885, Fiduciaria Antonini SA is a long-established advisory firm based in Lugano, Switzerland, providing tax, corporate, and family office services to businesses and private clients across Switzerland and internationally. The firm supports clients across a broad range of areas, including international taxation, transfer pricing, VAT compliance, corporate structuring, real estate transactions, and human resources advisory.
With a team of approximately 30 professionals, Fiduciaria Antonini is recognised for its strong technical expertise, partner-led service model, and commitment to discretion and professional integrity. The firm combines deep local knowledge with an international perspective, delivering clear, tailored advice to support complex business and financial decisions.
In addition to its advisory services, the firm is regularly appointed by courts as an independent expert in matters of taxation, accounting, and business valuation, reflecting the level of trust and confidence placed in its expertise.
“Joining PrimeGlobal reflects our commitment to providing clients with seamless, high-quality advisory services in an increasingly international environment. Through the association, we can collaborate with trusted independent firms worldwide while maintaining the standards of expertise, discretion, and client focus that define our firm.
We look forward to contributing our experience and working closely with fellow members to support clients across jurisdictions.” Simone Leonardi, Director
“We are pleased to welcome Fiduciaria Antonini to PrimeGlobal. With a long-standing presence in Switzerland and a strong reputation for technical expertise and discretion, the firm brings valuable experience to our EMEA region. We look forward to their contribution to the network and collaboration with fellow member firms.” Oliver Grosse-Brauckmann, Executive Director – EMEA, PrimeGlobal
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Fiduciaria Antonini SA
Established in 1885 as a legal and notarial practice, Fiduciaria Antonini SA has evolved into one of the Canton of Ticino's foremost advisory firms, offering comprehensive services in taxation, corporate structuring, and family office management across Switzerland. Our practice is founded on three enduring principles: technical expertise, professional integrity, and absolute discretion. Our team of 30 qualified professionals operates from the firm's historic headquarters in Lugano. The breadth of their academic and professional backgrounds enables us to deliver a fully integrated range of advisory services — spanning international taxation, transfer pricing, human resources consulting, VAT advisory and compliance, real estate transactions, and family office mandates. Over more than a century of uninterrupted practice, we have accompanied our clients through complex decisions with bespoke solutions and an unwavering commitment to quality. We combine institutional continuity with a forward-looking approach, ensuring that our clients benefit from both the depth of our experience and the relevance of our expertise. Our guiding principles: Client-centred advisory, tailored to the specific circumstances and objectives of each mandate. Ongoing professional development as a structural commitment of the firm Consistent delivery of high-quality work as a non-negotiable standard A collaborative, team-based approach that ensures coherence, accountability, and mutual professional enrichment
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