Broker-Dealer vs RIA: What High-Earning Families Should Know

By Kevin Luu, Co-Founder and Chief Learning Officer. Reviewed on 2026-09-30.

A broker-dealer is a firm that buys and sells securities for customers (the broker side) or for its own account (the dealer side), and its representatives are typically paid per transaction. A registered investment adviser (RIA) is a firm paid to give investment advice, often on an ongoing basis, and it owes you a fiduciary duty across the whole relationship. The practical difference: a broker owes you a best-interest duty at the moment of each recommendation, while an RIA owes you a duty of care and loyalty for as long as it advises you.

For a household earning $750,000 to $3 million, that difference shows up in three specific decisions: what to do with an old 401(k), how to sell down a concentrated position in company stock from RSUs or ESPP, and who is watching the accounts after the paperwork is signed. This guide explains how each model is regulated and paid, how to tell which one you are talking to, and what the choice looks like in dollars for a Bay Area or Seattle family.

What a broker-dealer is, and what a registered representative does

A broker-dealer registers with the SEC under the Securities Exchange Act and is a member of FINRA, the industry’s self-regulatory organization. The people you meet are usually “registered representatives”: individuals licensed through FINRA exams to sell securities on behalf of that firm. Their business card may say “financial advisor”, “wealth manager” or “vice president”. None of those titles tells you the legal duty they owe you.

Many high-earning W-2 families have a broker-dealer relationship without choosing one. The brokerage that administers your employer’s stock plan holds your vested RSUs and ESPP shares, and it often offers a complimentary “advisor” once the balance gets large. That person is usually a registered representative of the brokerage. That is not a problem in itself, but you should know the model before acting on a recommendation.

Broker-dealers are paid mainly through transactions: commissions, sales charges on mutual funds and annuities, and payments from product sponsors. Since June 30, 2020, the SEC’s Regulation Best Interest requires a broker-dealer recommending a security or account type to a retail customer to act in that customer’s best interest at the time of the recommendation, and to disclose and manage conflicts. Reg BI does not create a duty to keep monitoring your account afterward unless the firm agrees to do so.

What a registered investment adviser is

An RIA registers with the SEC or, if it is smaller, with its state securities regulator (in California, the Department of Financial Protection and Innovation; in Washington, the Department of Financial Institutions Securities Division). Its people are called investment adviser representatives. An RIA is paid for advice, usually as a percentage of assets managed, a flat annual fee, or an hourly or project fee.

Under the Investment Advisers Act, an RIA is a fiduciary. The SEC’s 2019 interpretation of the adviser’s fiduciary duty describes a duty of care and a duty of loyalty that apply to the entire relationship, not to a single transaction. When the arrangement includes ongoing management, the adviser is expected to monitor at a frequency that fits the agreement. Being a fiduciary does not mean an adviser has no conflicts. It means conflicts must be eliminated or fully disclosed so you can give informed consent.

Every RIA files Form ADV. Part 2A is a plain-English brochure covering services, fees, conflicts and disciplinary history. You can read it free on the SEC’s Investment Adviser Public Disclosure site.

Broker-dealer vs RIA: side-by-side comparison

Both models must give retail investors a short Form CRS relationship summary that explains services, fees, conflicts and disciplinary history in a standard format. Ask for it at the first meeting. It is the fastest way to see which model you are dealing with.

Dual registrants: the person who wears both hats

The question “broker-dealer or RIA?” often has the answer “both”. Many large firms are registered as both a broker-dealer and an RIA, and many individuals hold both a FINRA registration and an investment adviser representative registration. The same person can act as a fiduciary on your managed account and as a broker when selling you an annuity or a commission-based fund in a separate account.

That is legal, and the firm must tell you which capacity applies. The risk for a busy family is that the shift is easy to miss. “Fee-based” usually signals a dual model: an advisory fee plus the possibility of commissions. “Fee-only” is not a regulatory term, but it is generally used to mean the adviser receives no commissions from any product. If that matters to you, ask the adviser to confirm it in writing and check the compensation section of Form ADV Part 2A.

Worked example: a $1.3 million Seattle household with RSUs and an old 401(k)

Assumptions (illustrative, not a quote from any firm): Maya is a senior engineering manager at a Seattle tech company, Ben is a hospitalist, and they have two children aged 4 and 7. W-2 income is $1.3 million including RSUs. They hold $2.4 million in a taxable brokerage account, of which $900,000 is their employer’s stock, plus $600,000 in Ben’s old employer 401(k). Total: $3.0 million.

They meet two people in the same month.

1. A registered representative at the stock-plan brokerage recommends rolling the $600,000 401(k) into an IRA invested in mutual funds with a 2% sales charge (hypothetical) and selling the company stock gradually. The one-time sales charge would be $12,000 (2% x $600,000). If the account then sits in low-turnover funds, ongoing costs can be low. The recommendation must meet Reg BI when made, but no one is obligated to revisit the plan next year when the next RSU tranche vests.
2. A fee-only RIA charging a hypothetical 0.8% on $3.0 million would cost $24,000 a year. For that fee, the adviser owes a fiduciary duty on the rollover question, the sell-down schedule for the $900,000 stock position, and ongoing monitoring under the agreement. A flat-fee RIA at a hypothetical $18,000 a year would provide similar scope at a lower cost on this balance.

Neither option is automatically cheaper. Over ten years, the RIA at 0.8% costs $240,000 before growth (0.8% x $3.0 million x 10, ignoring changes in balance), while the brokerage route may cost far less in fees if little is traded. What the family is actually buying is the duty and the attention. For them, the expensive mistakes are not fund fees. They are rolling a 401(k) out of a plan with low institutional fund costs into higher-cost products, and holding $900,000 in one stock through a downturn because no one was assigned to watch it.

The state matters for the sell-down too. In Washington, long-term gains above the annual standard deduction ($278,000 for 2025, the latest published figure) are subject to the state’s 7% capital gains tax, rising to 9.9% on taxable gains above $1 million. If the same family lived in California, the gain would be taxed as ordinary income, because California has no lower rate for capital gains, at marginal rates up to 13.3% (2025 schedule). A sell-down spread across tax years is a planning decision, and it is one more reason families want someone with an ongoing duty involved.

How to tell which model you are talking to in ten minutes

• Ask for Form CRS. It states whether the firm is a broker-dealer, an RIA, or both.
• Search the person on BrokerCheck. It shows FINRA registrations, investment adviser registrations, employment history and any disclosures.
• Ask: “In what capacity are you making this recommendation, and how are you paid if I say yes?” A clear answer is a good sign. A vague one is information too.
• For an RIA, read the fees and conflicts sections of Form ADV Part 2A, especially any compensation tied to products or affiliated firms.
• Ask whether the adviser will give advice on assets they do not manage, such as your current 401(k), deferred comp elections and stock plan account. Advice on held-away assets is where high-income W-2 families often get the most value.

Common mistakes high-earning families make with this choice

• Treating the stock-plan brokerage’s advisor as a neutral planner. They may be excellent, but they are typically paid by the firm that holds the shares, and the advice may stop at the edge of that account.
• Rolling over a 401(k) by default. Leaving it in the plan, moving it to a new employer plan, or rolling to an IRA each has tradeoffs, including cost and, for families using the backdoor Roth, the pro-rata rule on pre-tax IRA balances. Get the reasoning in writing.
• Comparing advisory fees to “free”. Commission-based advice is paid for through product costs. Compare total annual cost in dollars, not a headline percentage. Our guide to RIA fees walks through the math.
• Assuming “fiduciary” covers everything. Read the agreement to see which accounts and decisions are in scope.

What to write down for your children

Most parents choose an adviser once and never explain why. Your kids will one day face the same choice with less context. A one-page note in the family’s FamilyKnowledge® Library covering who advises the family, what duty they owe, how they are paid, and why you chose that model turns a back-office decision into something your children can learn from. As Kevin Luu puts it: “Your kids don’t need to inherit your portfolio. They need to inherit your decision-making process.”

Frequently asked questions

Is an RIA always better than a broker-dealer?

No. A broker can be a sensible, low-cost choice for a family that wants to buy and hold a few funds and make its own decisions. An RIA usually makes more sense when you want ongoing advice across equity compensation, retirement accounts, taxes and estate documents, and you want one party with a continuing fiduciary duty on all of it.

What does “broker-dealer RIA” mean on a firm’s website?

It usually means the firm is dually registered: it operates a broker-dealer and an advisory business under one roof, or its representatives hold both registrations. You can still get fiduciary advice there, but ask which accounts are advisory and which are brokerage, and how each is paid.

How can I check whether an adviser has a disciplinary history?

Search the individual and the firm on FINRA BrokerCheck and the SEC’s IAPD site. Both are free and show registrations, employment history, customer complaints, regulatory actions and certain financial disclosures. Form ADV Part 2B, the brochure supplement, also covers the individual adviser’s background.

Next step

Pull the Form CRS for every firm that currently holds your family’s money, including the stock-plan brokerage, and list beside each one which model it uses and who, if anyone, is responsible for ongoing advice. If the answer is “no one”, that is the gap to close first. For how we look at this across investments, retirement and employee benefits and tax, the Tax & Wealth Assessment is a good place to start.

This is general education, not individual advice. The right choice depends on the family’s full picture.

Written by

Kevin Luu

Co-Founder and Chief Learning Officer, Bright Advisers

Kevin has advised high-income W-2 tech and biotech families since 2015, and leads the education-first Age Five Family Office from Brea, California.

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