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Winthrop & Co.
Market Insights
GuideFiled October 1, 20267 min read

How Do You Build Your Own RIA From Scratch?

How to start an RIA and build it from scratch, in the order a breakaway advisor actually does it: SEC or state registration, the legal entity, licensing, a qualified custodian, the compliance program and its chief compliance officer, Form ADV, the resignation, repapering clients, and the obligations that start on day one. Every step is tied to the SEC, FINRA or NASAA rule behind it.

Filed by Tyler Noe

GuideHow to Start an RIA and Build It From Scratch (2026)

The short answer: Starting your own registered investment adviser and building it from scratch takes six things, roughly in this order: a legal entity, registration with the SEC or your state, a Form ADV filed through the IARD system, a written compliance program with a named chief compliance officer, a custodian to hold client assets, and a plan for the day you resign. Firms with $100 million or more under management can register with the SEC, and at $110 million they must; most smaller firms register with their state. Once a complete application is filed, the SEC has 45 days to grant registration or begin proceedings to deny it, and SEC filing fees run $40 to $225 depending on assets.

For an advisor leaving a wirehouse or a broker-dealer, the order matters as much as the steps. Much of the preparation happens before resignation, and the registration has to be effective before the first client signs. This guide walks through each step as it happens in a breakaway, with the rule behind it. To work through it on paper, download the RIA Launch Checklist.

The steps, in the order they happen

#StepWhat it involvesThe rule behind it
1Decide SEC or stateFirms with $100 million or more under management can register with the SEC and must at $110 million; most smaller firms register with their home state.SEC Rule 203A-1; Advisers Act Section 203A
2Form the businessChoose the legal entity and the firm name, and set up its bank account and tax registration.State law
3Get licensedEach advisor who gives advice passes the Series 65, or the Series 66 alongside a Series 7; most states waive the exam for designations such as the CFP.NASAA; FINRA exam rules
4Choose a custodian and technologyIf the firm has custody of client assets, which includes deducting its fees from client accounts, SEC rules require a qualified custodian; the custodian, the portfolio and reporting systems and the CRM are chosen and contracted before launch.SEC Rule 206(4)-2
5Build the compliance programWritten policies and procedures, a code of ethics, a books-and-records system, and a named chief compliance officer.SEC Rules 206(4)-7, 204A-1, 204-2
6File Form ADVParts 1, 2A and 2B (plus Form CRS if the firm is SEC-registered and serves retail investors), filed through the IARD system. SEC fees run $40 to $225 by assets; the SEC has 45 days to grant registration or begin proceedings to deny it.Advisers Act Section 203(c); SEC IARD fee schedule
7ResignRegistration is effective; the former firm files the Form U5 within 30 days. What client information can come with you depends on your agreement and the Broker Protocol.FINRA By-Laws Art. V Sec. 3; the Protocol
8Repaper clientsNew advisory agreements, the Form ADV Part 2A brochure delivered at or before signing, and account transfers to the new custodian.SEC Rule 204-3
9Run itAmend Form ADV within 90 days of each fiscal year end, review the compliance program every year, and be ready for an early SEC exam: the SEC's 2026 priorities single out newly registered advisers.SEC Rules 204-1, 206(4)-7; SEC 2026 exam priorities

Steps 1 through 6 are mostly prepared before resignation. For a registered representative, owning or working for a new adviser while still registered with a broker-dealer can require prior written notice to that firm under FINRA's outside business activity rules. When to file, and what you may do while still at your current firm, depends on your agreement and is a question for counsel; how to leave a wirehouse and go independent sets out that sequence.

What each step involves

1. Decide SEC or state

Registration follows assets under management. A firm with $100 million or more can register with the SEC, a firm at $110 million or more must, and an SEC-registered firm can stay with the SEC until it falls below $90 million. Most firms below $100 million register with their home state instead. State registration has its own costs: fees vary, and some states require a minimum net worth or a surety bond, more for firms with discretion or custody. An SEC-registered firm still makes notice filings, and pays notice fees, in the states that require them, and its advisors who meet the definition of an investment adviser representative register in the states where they have a place of business, as those states require. What a small RIA is covers the line in more detail.

2. Form the business

The firm is a legal entity before it is anything else: usually an LLC or a corporation, with its name, tax registration and bank account set up first. For a team, this is also where the hardest conversations belong. Ownership, decision rights and what happens when a partner leaves are cheaper to settle in the operating agreement on day one than after the first good year.

3. Get licensed

Each person who gives advice registers as an investment adviser representative. That usually means passing the Series 65, or the Series 66 with a Series 7, and most states waive the exam for holders of designations such as the CFP. Timing matters for anyone dropping broker registration: FINRA qualifications lapse two years after a person stops being registered unless the person joins FINRA's Maintaining Qualifications Program, and lapsing your Series 7 when you go RIA walks through what that means.

4. Choose a custodian and technology

An RIA does not hold client money itself. When an SEC-registered firm has custody of client funds or securities, which includes having authority to deduct its fees from client accounts, SEC rules require them to be held by a qualified custodian, usually a bank or a broker-dealer, and the custodian decides whether to take the firm on. The portfolio, reporting and client-relationship systems are chosen alongside it, because they have to connect on day one. How custody actually works explains where the money sits.

5. Build the compliance program

Every SEC-registered adviser must have written policies and procedures reasonably designed to prevent violations, review them at least once a year, and name a chief compliance officer; state-registered firms follow their state's equivalent rules. In a new firm that is often a founder, sometimes with outside support. The same build includes a code of ethics covering personal trading, and a books-and-records system: most records are kept for five years, the first two in an office of the adviser.

6. File Form ADV

Form ADV is the firm's public registration. Part 1 describes the business, Part 2A is the plain-English brochure clients receive, Part 2B is a supplement for each advisor, and SEC-registered firms serving retail investors add Form CRS, a short relationship summary. It is filed electronically through the IARD system, and the account has to be funded before the filing goes through. SEC filing fees are $40, $150 or $225 depending on assets. Once the application is complete, the SEC has 45 days to grant registration or begin proceedings to deny it, and how to register an RIA covers the filing in detail.

7. Resign

Once registration is effective, the advisor can resign, and the former firm has 30 days to file the Form U5, with a copy to the advisor. What client information can come along depends on the advisor's agreement and on the Broker Protocol: the Protocol applies only when both the firm being left and the new firm are signatories. When to file, and what may be done while still employed, are questions for counsel before any of steps 1 to 6 begin.

8. Repaper clients

Clients sign new advisory agreements with the new firm and receive the Form ADV brochure at or before signing, along with each advisor's supplement and, for retail clients of an SEC-registered firm, Form CRS. Their accounts then transfer to the new custodian.

9. Run it

Registration is the start of the obligations. Form ADV is amended every year within 90 days of the fiscal year end, when the brochure has changed materially, clients receive a summary of those changes within 120 days of the fiscal year end, and the compliance program gets its annual review. New SEC-registered firms should be ready for an early examination: the SEC's 2026 examination priorities say it will prioritize examinations of newly registered advisers.

The steps themselves are public. The judgment is in the order, the custodian fit, and the day of resignation, which is the work of Winthrop's RIA Search & Launch. Request an introduction.

Sources (19)

Frequently asked

What are the requirements to start an RIA?
A legal entity, registration with the SEC or the state, a Form ADV filed through the IARD system, a written compliance program with a named chief compliance officer, a qualified custodian for client assets, and a qualifying license for each advisor (usually the Series 65, or the Series 66 with a Series 7). Firms with $100 million or more under management can register with the SEC and must at $110 million; most smaller firms register with their state.
Can I start an RIA without a Series 7?
Yes. The Series 7 is a broker license. An RIA needs each advisor registered as an investment adviser representative, which usually means passing the Series 65, and most states waive that exam for holders of designations such as the CFP. The Series 7 matters only if the advisor also wants to keep a brokerage business through a broker-dealer.
Can I start an RIA while I am still employed at my firm?
Much of the preparation can happen before resignation, but what you may do while still employed depends on your employment agreement, your firm's outside-activity rules and the duties you owe your current firm and clients. Many breakaway advisors prepare before resigning and resign once registration is effective, but the timing of each step is a question for counsel. Speak to counsel before filing anything.
How long does it take to start an RIA?
Once a complete application is filed, the SEC has 45 days to grant registration or begin proceedings to deny it; state timelines vary. The full launch, from forming the entity to moving clients, takes longer, and Winthrop & Co.'s launch work typically runs four to nine months depending on the firm's size and how much is prepared before resignation.
Do I need a custodian before I register?
In practice, yes. SEC rules require a qualified custodian for client assets an SEC-registered firm has custody of, which includes deducting fees from client accounts, the Form ADV describes how the firm handles custody and trading, and the custodian's own onboarding has to be complete before the first account can transfer.
Can I be my own chief compliance officer?
Yes. The SEC requires every SEC-registered adviser to designate a chief compliance officer who is a supervised person of the firm. In a new firm that is often a founder, sometimes with outside compliance support, and the program must be reviewed at least once a year.
How much in assets do I need to start an RIA?
There is no legal minimum. The $100 million line decides only whether a firm registers with the SEC or the state. Whether a book can support its own firm is an economic question, and our guide to going independent with a small book works through it.
Can I take my clients when I start my own RIA?
Clients decide where their accounts go. What you may take and do on the way out depends on your agreement, any non-solicitation terms, and whether both firms are signatories to the Broker Protocol. Our guide to whether you actually own your book of business covers the question in depth.

Filed

October 1, 2026

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