ACE International SA

Overview

ACE “Advice & Corporate Engineering” International SA and ACE Trustees SA are headquartered in Geneva, Switzerland.¹ The group includes trustee companies in Switzerland and New Zealand and serves entrepreneurs and their families internationally.¹ Its professional network spans more than 30 jurisdictions.¹

History

ACE states that it has operated for more than 45 years.¹ Senior management members acquired the group from Rathbone Brothers PLC in February 2009.¹ The ACE Group includes several fully owned subsidiaries.¹ The firm says it expanded its multi family office services during the past 20 years.¹

Leadership

Ariane Slinger is CEO and a member of the Swiss Association of Trust Companies Executive Committee.¹ Peter Moorhouse is Managing Director.⁴

Services

ACE coordinates investment services by selecting investment managers and banking institutions and reviewing risks, performance and costs.² It provides wealth planning, tax and accounting support for family assets and financial reporting.² Its estate, trust and governance work covers succession, trusts, foundations, family governance and preparation for future generations.² Reporting, administration, compliance, philanthropy and related support include company administration, regulatory reporting, transaction monitoring and charitable project management.²

ACE provides professional trustee services in Switzerland and New Zealand and states that it can act under any trust legislation.¹ Its solutions may use companies, partnerships, trusts, foundations and investment funds.² The firm also supports legal, accounting and administrative work across more than 30 jurisdictions.²

What the firm offers

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

Client focus

ACE says it serves an international client base of entrepreneurs and their families.¹ It describes its work as supporting business development, asset enhancement, family wealth protection and succession planning for future generations.¹

Investment philosophy and approach

ACE describes its approach as independent advice combined with customized services.² Its stated values are Entrepreneurship, Integrity, Excellence of Service and Independence.¹ The firm describes its staff as multilingual lawyers, accountants, administrators and STEP members.¹ ACE says employees receive continuing training on legislative changes.¹

FAQs

Related resources

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• GuideWhen does a family need its own office

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Sources

1. accessed 2026-10-23
2. accessed 2026-10-23
3. accessed 2026-10-23
4. 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.