Registered Investment Advisor (RIA) Registration: SEC Form ADV & Fiduciary Standards 2026
A regulatory guide to establishing a Registered Investment Advisor (RIA), SEC vs state registration thresholds ($110M AUM), Form ADV filings, and fiduciary legal obligations.
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The Registered Investment Advisor (RIA) Legal Architecture
Under the Investment Advisers Act of 1940, any firm or individual compensated for providing securities advice must register as an Investment Adviser. Unlike registered broker-dealers operating under FINRA suitability guidelines (Regulation Best Interest / Reg BI), RIAs bear an uncompromising fiduciary duty under Section 206 to act solely in the best interests of their clients at all times.
1. SEC vs State Registration AUM Thresholds
Jurisdiction between federal SEC oversight and state securities commissions depends strictly on Regulatory Assets Under Management (RAUM):
| Advisory Category | Regulatory AUM Threshold | Primary Regulator | Annual Filing Mandate |
|:------------------|:-------------------------|:------------------|:-----------------------|
| Small Advisor | $0 to $25,000,000 | State Securities Commission | State annual registration renewal |
| Mid-Sized Advisor | $25,000,000 to $100,000,000 | State Securities Commission | State registration (unless state exempt) |
| SEC Buffer Zone | $100,000,000 to $110,000,000 | Optional SEC Transition Zone | Choice of state or SEC registration |
| Large Advisor | > $110,000,000 | Federal SEC (Mandatory) | SEC Form ADV annual updating amendment |
2. Form ADV Disclosure Structure
Registration requires submitting Form ADV through FINRA's Investment Adviser Registration Depository (IARD):
- Part 1A / 1B: Algorithmic disclosures detailing advisory business structure, ownership percentages, conflicts of interest, and disciplinary history.
- Part 2A ('The Brochure'): Plain-English narrative describing fee schedules, investment strategies, risk management, and custodial relationships.
- Part 2B ('Brochure Supplement'): Educational qualifications, licenses (Series 65 or CFP), and disciplinary background for supervised advisory personnel.
- Part 3 (Form CRS): Two-page customer relationship summary clarifying standard of conduct, fees, and broker-dealer affiliations.
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Frequently Asked Questions
What is the primary legal difference between an RIA and a Broker-Dealer?
An RIA owes clients an ongoing statutory fiduciary duty under the Investment Advisers Act of 1940, requiring undivided loyalty and full disclosure of all conflicts of interest. A Broker-Dealer operates under Regulation Best Interest (Reg BI), which governs point-of-sale suitability but permits proprietary product sales and commission compensation.
What is the $100M to $110M SEC AUM buffer?
The SEC provides a $10 million buffer zone to prevent advisors from constantly shifting between state and SEC registration due to market fluctuations. A state-registered RIA is not required to register with the SEC until reaching $110 million in AUM, and an SEC-registered RIA is not required to de-register until falling below $90 million.
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