Aquitaine Group Limited

Overview

Aquitaine provides trust, company and foundation services from Guernsey.² The firm works with family offices and provides family office services to wealthy families.¹ Its client base was described as international and diverse.¹ Client relationships were described as director led, with directors experienced in high net worth clients, family matters and complex trust and corporate structures.¹

History

Aquitaine Group Limited was established in 2008.¹ A legal entity record shows an entity creation date of 1 July 2008 and identifies Aquitaine Group Limited as a previous legal name of Summit Trust Guernsey Limited.⁴ The firm merged with an existing Guernsey trust company in 2013.¹ Aquitaine was described as employing more than 40 people in Guernsey, while the wider group, including Summit Trust International S.A. in Geneva and Cayman, was described as having 75 employees.¹

Timeline

1. 2008Aquitaine Group Limited was established in 2008.
2. 2013The firm merged with an existing Guernsey trust company in 2013.

Services

Aquitaine’s private client work centers on family wealth planning, including estate planning and inter vivos transfers between family branches or generations.¹ Private client services include forming, managing and administering trusts.¹ The firm can act as corporate trustee, enforcer or protector and can provide executorship services.¹

Aquitaine forms, manages and administers companies, limited partnerships and other vehicles.¹ These services can include corporate or individual directors.¹ Foundation services include formation, management and administration, including acting as Foundation Council members or other officers.¹

Corporate client work includes employee benefit trusts, long term incentive plans and similar trust structures.¹ Additional corporate services include standalone accounting, company secretarial services and corporate governance services.¹ The firm can introduce clients to bankers, wealth managers, legal and tax advisers, insurers and other professionals through its intermediary network.¹

Aquitaine was characterized as an independent fiduciary services business providing trust, company and foundation services.² Chambers listed Aquitaine Group Ltd among Guernsey’s Leading Firms for Trust Companies.² A Chambers source described the Guernsey team as having an international mindset and understanding unusual structures and difficult assets.²

What the firm offers

• Financial planning
• Tax planning
• Estate planning
• Trust and fiduciary
• Philanthropy
• Family governance and education
• Administration and bill pay
• Cross-border planning

Client focus

Aquitaine works with wealthy families and family offices.¹ Its private client work addresses family wealth planning, estate planning and transfers between family branches or generations.¹ Corporate clients may use the firm for employee benefit trusts, long term incentive plans and related structures.¹ The firm’s client base was described as international and diverse.¹

Investment philosophy and approach

The available facts describe Aquitaine as a fiduciary and administration services provider.¹ Its work includes trust, company, foundation and family office services.¹

FAQs

Related resources

• LocationMultifamily offices in Guernsey

  This Guernsey directory helps readers place Aquitaine Group Limited within the island's fiduciary services community. It can support early research for families or business owners seeking financial, tax, estate, trust and cross-border planning in a private wealth setting.

• Network siteOffshoreTrusts.com

  These guides explain how offshore and international trusts relate to estate planning, asset holding and cross-border arrangements. They give families and corporate clients useful background before discussing trust, fiduciary, philanthropy or succession needs with a Guernsey-based provider.

• Network siteFamilyOfficeDatabases.com

  Family office and investor databases help readers identify other organizations serving internationally minded families and business owners. They can inform market comparisons, referral research and conversations about governance, administration, bill pay or investment-related coordination.

• DataMFOs by decade founded

  This page groups multifamily offices by the decade they were founded, giving readers historical context during their research. Founding dates can help a family or owner frame questions about continuity, ownership structure and the experience relevant to fiduciary, governance and education services.

• Similar firmsTarian Trust Limited

  Reviewing Tarian Trust Limited alongside Aquitaine Group Limited gives readers another profile for comparison on this site. The exercise can help clarify which questions to ask about Guernsey fiduciary work, trust administration, family governance, philanthropy and cross-border planning.

Sources

1. Arts & Collections accessed 2026-10-23.
2. Chambers Trust Companies, Guernsey accessed 2026-10-23.
3. GFSC regulated entity record accessed 2026-10-23.
4. Bloomberg LEI record accessed 2026-10-23.
5. Aquitaine Trust website accessed 2026-10-23.

Claim or correct this profile

This profile is a factual summary written in our own words from public sources. It is for information only. It is not an endorsement, rating, ranking or recommendation, and it is not investment advice. MultiFamilyOffices.com is not affiliated with the SEC or with this firm unless stated. Form ADV figures are self-reported by the firm.