Short answer
The best fiduciary is not automatically the oldest child or closest relative. Match each role to the work: an executor handles a probate estate, a trustee administers trust property, a financial agent acts during life, and a health-care agent makes health decisions when authorized.
Match the person to the role
Consider reliability, financial judgment, communication, location, health, family dynamics, recordkeeping, conflicts, and willingness. One person can fill several roles, but that is not always the best design.
Plan around friction
Co-fiduciaries can add oversight but may also create delay or deadlock. A neutral professional may help when assets are complex, family relationships are strained, or long-term administration is likely.
Always name a workable backup
A plan can stall when the first choice cannot act.
- Ask before naming someone
- Name at least one successor
- Consider age and geographic distance
- Address compensation
- Separate conflicting roles
- Document how successors are confirmed