Definition · Regulatory
Fiduciary Duty
An adviser's legal duty of care and loyalty, which requires advice in the client's best interest and full disclosure of conflicts.
Nashional Investments · Updated October 2026
Educational definition only, not investment, tax or legal advice.
In practice
Investment advisers are regulated to protect clients, and knowing how the rules work helps you judge the advice you receive. The term Fiduciary Duty relates to how advisers such as Nashional Investments are registered and supervised. You can review our registration, Form ADV and disclosures at any time.
Questions
Common questions.
What does the term Fiduciary Duty mean?
An adviser's legal duty of care and loyalty, which requires advice in the client's best interest and full disclosure of conflicts.
Why does Fiduciary Duty matter for investors?
Investment advisers are regulated to protect clients, and knowing how the rules work helps you judge the advice you receive. The term Fiduciary Duty relates to how advisers such as Nashional Investments are registered and supervised.
Related terms
Where it applies
See how this fits into a real plan on our Our disclosures page.
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