Whether you’re building a family office, setting up an international trust, or navigating a cross-border tax event, Equarius Advisory offers the wisdom and structure your wealth deserves.
In an age where financial privacy is vanishing and global tax scrutiny tightens year by year, the High-Net-Worth Individual (HNWI) is caught in a delicate balancing act: preserve wealth, maintain discretion, and remain fully compliant across borders. This isn’t a task for generalist accountants or online tax calculators. It demands an elite, international perspective.
This is where Equarius Advisory steps in.
Situated in the heart of Mayfair — London’s historic enclave of wealth and discretion — we offer a rare blend of old-world service and modern financial intelligence. Our clients include ultra-high-net-worth families, international entrepreneurs, offshore trustees, and global investors who rely on our expertise to structure, preserve, and grow wealth across jurisdictions.
At Equarius Advisory, we’ve built our reputation on more than numbers — we’re known for our judgment, confidentiality, and strategic thinking. While some accounting firms boast thousands of clients, we serve a select few. This exclusivity enables us to deeply understand each client’s financial ecosystem, personal preferences, and long-term vision.
Our team is composed of UK Chartered Accountants, offshore tax advisors, and international compliance experts, allowing us to provide holistic advice across borders. From trust accounting in the Caribbean to crypto taxation in Europe, we handle complexity with ease and confidence.
1. International Tax Strategy & Structuring
We work with HNWIs who operate across multiple jurisdictions, helping them legally reduce tax exposure through tailored corporate structures, non-dom strategies, and international trust planning. Whether you’re expanding into new markets or exiting a business, we ensure the financial pathway is optimised — and protected.
2. Offshore Company & Trust Accounting
Through partnerships in Nevis, Seychelles, BVI, and the Cayman Islands, we provide offshore bookkeeping, trust-level accounting, and audited financials for those managing global assets. We act as a bridge between your offshore entities and your onshore compliance obligations — ensuring everything reconciles cleanly and legally.
3. UK & International Personal Tax Planning
For non-doms, UK-residents with overseas income, or those relocating for investment visas, we guide the entire process — claiming exemptions, filing cross-border disclosures, and advising on domicile planning. Our tax team understands how to walk the line between efficiency and transparency.
4. Family Office Support & Private Wealth Reporting
For families managing intergenerational wealth, we provide custom financial reporting, trust income tracking, and consolidation of offshore and onshore assets. Whether it’s for private equity holdings, real estate portfolios, or digital assets, we deliver clarity and foresight.
5. Crypto & Digital Asset Compliance
Equarius is one of the few Mayfair accounting firms with a dedicated digital asset desk, offering tax reporting for DeFi, staking, OTC crypto trades, and custody structures. We help clients bring crypto wealth into regulated trust frameworks — reducing risk and ensuring reporting compliance with HMRC and global regulators.
Our services are designed for those whose financial lives are anything but simple:
We are not a volume-driven firm. We’re relationship-driven. And discretion is guaranteed.
Mayfair isn’t just a postcode. It’s a statement.
Operating from Mayfair connects us to private banks, law firms, family offices, and institutional wealth managers who serve a similar clientele. Our location ensures access to the right professionals, fast-track connections, and a network of international advisers ready to assist on complex cross-border matters.
It also sends a message: you’re working with a firm that understands your world.
📍 Equarius Advisory — 12 Old Bond Street, Mayfair, London
You can learn more at our website www.equariusadvisory.co.uk
