An investment advisor is a person or firm that provides investment advice for compensation. Under the Investment Advisers Act of 1940, investment advisors with sufficient assets under management must register with the SEC and are legally required to act as fiduciaries — putting your interests ahead of their own. This is a higher legal standard than broker-dealers, who are governed by a suitability standard.
The Legal Definition
The Investment Advisers Act of 1940 defines an investment adviser as any person or firm that:
- Provides advice or analysis concerning securities
- Does so as part of a regular business
- Receives compensation for this advice
All three elements must be present. The law uses “adviser” (with an “e”) — the older spelling — but “investment advisor” (with an “o”) is used interchangeably in everyday usage with no legal difference.
Investment Advisor Registration Requirements
| Assets Under Management | Registration Required |
|---|---|
| $110 million or more | SEC registration (federal) |
| $25 million–$110 million | State registration (or SEC in some cases) |
| Under $25 million | State registration |
| Fewer than 15 clients | May be exempt from registration |
Advisors registered with the SEC file a Form ADV — a two-part disclosure document. Part 1 contains firm information and AUM. Part 2 (the “brochure”) contains fee schedules, services, conflicts of interest, and investment philosophy. Both are publicly available at adviserinfo.sec.gov.
Fiduciary Duty — What It Means in Practice
All registered investment advisors owe clients two duties under the Advisers Act:
1. Duty of care: Advice must be in the client’s best interest based on a full understanding of the client’s financial situation, goals, and risk tolerance.
2. Duty of loyalty: The advisor must put client interests first, eliminate or disclose conflicts of interest, and not use client information for the advisor’s benefit.
Practical examples of fiduciary compliance:
- Recommending the lowest-cost fund that meets the client’s needs, not a higher-cost fund that pays the advisor a commission
- Disclosing in writing that the advisor’s firm receives payments from fund companies (if applicable)
- Not front-running trades (executing their own trades before client trades)
- Promptly updating clients when their situation changes materially
Investment Advisor vs. Broker-Dealer: The Key Difference
| Investment Advisor (RIA) | Broker-Dealer | |
|---|---|---|
| Legal standard | Fiduciary (client’s best interest) | Suitability + Reg BI |
| Registration | SEC or state (Advisers Act) | FINRA (Exchange Act) |
| Compensation | AUM fee, flat fee, hourly | Commissions, transaction fees |
| Ongoing duty | Ongoing for advisory relationship | Per transaction |
| Verify at | adviserinfo.sec.gov | brokercheck.finra.org |
Some professionals hold dual registration — they act as an RIA in some situations and as a broker-dealer in others. The fiduciary standard only applies in the RIA capacity. Ask any advisor: “Are you a fiduciary 100% of the time, including when recommending insurance and annuity products?” If the answer is anything but “yes,” understand when the fiduciary standard does not apply.
What Investment Advisors Do
Investment advisors provide a range of services depending on their firm:
- Portfolio management — designing and managing investment portfolios aligned with client goals and risk tolerance
- Financial planning — retirement projections, Social Security optimization, Roth conversion analysis
- Tax planning — asset location strategies, tax-loss harvesting, capital gains management
- Estate planning coordination — working with estate attorneys on asset transfer strategies
- Insurance review — analyzing life, disability, and long-term care needs
Most registered investment advisors offer portfolio management. Comprehensive financial planning may be an additional service or included in the fee depending on the firm.
How Investment Advisors Are Compensated
Fee-only: All revenue comes from client fees (AUM percentage, flat fee, or hourly). No commissions from any source. Eliminates conflicts from product recommendations.
Fee-based: Client fees plus commissions on some products (typically insurance or annuities). Creates potential conflicts.
Commission-only: All revenue from commissions on products sold. Highest conflict of interest. Typically applies to broker-dealers, not RIAs.
Cost example — $750,000 portfolio at 0.75% AUM: Annual advisory fee = $5,625/year, or about $469/month.
Finding a Registered Investment Advisor
- adviserinfo.sec.gov — search all registered RIAs, view Form ADV, check disciplinary history
- NAPFA (napfa.org) — lists fee-only fiduciary advisors
- CFP Board (cfp.net) — search CFP-credentialed advisors
- Zoe Financial (zoefin.com) — pre-vetted fee-only RIA matching service
Related Guides
- What Is a Registered Investment Advisor (RIA)?
- Types of Financial Advisors 2026
- What Does a Financial Advisor Do?
- How Much Does a Financial Advisor Cost? 2026
- How to Find a Financial Advisor Near You 2026
- Best Robo-Advisors & Financial Advisors Hub
The content on Wealthvieu is for informational purposes only and should not be considered financial, tax, or investment advice. Consult a qualified professional before making financial decisions. Full disclaimer · Editorial policy