Do You Know the Structure You’re Investing In?

Most people think they are buying an investment. What they are actually buying is a structure — a legal and business arrangement that determines who owes them what, how the person across the table gets paid, and what promises can even be made. The question is not "what should I buy?" It is: Do you know the structure you are investing in?

A reader sent in the question that shows up in almost every retirement conversation we have: "My advisor works at a big-name firm and calls himself a fiduciary. My neighbor's advisor is independent and calls herself fee-only. Aren't they doing the same job?"

Not necessarily. And the reason why is buried in the plumbing of the financial-services industry — the part nobody diagrams for you at the kitchen table. Independent fiduciaries and broker-dealers like Guardian, LPL, and Mass Mutual sit inside two different structures, with two different sets of rules, and two different ways of getting paid. Confuse them and you will nod along to a sentence that sounds like a guarantee and isn't one.

"Fiduciary" Is a Legal Standard, Not a Price Tag

Under the Investment Advisers Act of 1940, a Registered Investment Adviser (RIA) and the Investment Adviser Representatives (IARs) under it owe you a fiduciary duty — a continuous duty of loyalty and care that runs across the whole relationship, not just the moment somebody makes a recommendation.

Broker-dealers live under a different rule: Regulation Best Interest, or Reg BI, adopted by the SEC in 2019 and effective in 2020. Reg BI requires a broker-dealer to act in your best interest at the time a recommendation is made. It does not carry the ongoing monitoring and advice duty that comes with the Advisers Act standard.

One standard follows the relationship. The other applies to a single transaction. Both get described as "acting in your best interest." They are not the same promise.

Two Sides of One Coin: What "Broker-Dealer" Actually Means

Here is the part most people never get explained. A broker-dealer is not one function. It is two, bolted together under one roof — and the name literally spells out both halves.

The broker side

Acting as a broker, the firm is an agent. It connects a buyer and a seller, executes the trade on your behalf, and typically earns a commission for the service. Familiar territory: buy a fund, sell a stock, a commission changes hands.

The dealer side

Acting as a dealer, the firm is a principal. It buys and sells securities for its own account and inventory and profits from the spread — the gap between what it paid and what it sold it for. The firm is the other side of your trade.

Firms like LPL, Edward Jones, and the major wirehouses operate as broker-dealers, which means their advisors can be compensated through both functions: commissions on products they broker, and revenue tied to the dealer side of the house. Either way, the compensation is transaction-linked in a way a fee-only relationship structurally is not.

The Other Path: An Independent IAR With No Broker-Dealer Behind Them

The alternative is an Investment Adviser Representative working under an independent RIA with no affiliated broker-dealer at all. With no broker-dealer in the relationship, there is no mechanism to earn a commission on a trade or a product sale. The entire revenue model runs through an advisory fee — a percentage of assets managed, a flat retainer, or an hourly rate. Industry-wide, asset-based fees at fee-only firms commonly land somewhere around 1% for accounts above $1 million, often declining as the account grows.

That is a structural difference, not a marketing slogan. A fee-only IAR cannot collect a sales load, a commission, or a 12b-1 trailing payment on an investment recommendation. The plumbing that generates those payments does not exist in the relationship.

Hybrid Advisors: Two Hats, One Person, One Meeting

A hybrid advisor is dually registered — an IAR under an RIA and a registered representative of a broker-dealer. That person can charge an advisory fee on one account and earn a commission on a product sold into a different account, sometimes in the same sitting.

Reg BI governs the commission recommendations. The Advisers Act fiduciary standard governs the fee-based ones. The advisor is switching legal hats depending on which hat is producing the recommendation — and you have no way of knowing which hat is on unless you ask out loud.

Two Very Different Fee Stacks

On the broker-dealer and mutual fund side, the asset-weighted average expense ratio for equity mutual funds sits near 0.40% and bond funds near 0.36%, per Investment Company Institute and Morningstar data. But actively managed mutual funds as a category average closer to 0.50% to 0.87% — and the share classes sold through brokerage relationships can carry front-end sales loads and ongoing 12b-1 trailing commissions stacked on top of the expense ratio itself.

On the fee-only RIA side, the vehicle of choice is usually the ETF. Passive index ETFs average roughly 0.08% to 0.14%. A professionally managed sleeve blending ETFs, active overlays, and select stocks commonly runs about 0.15% to 0.31%, depending on strategy — layered transparently on top of the advisory fee, with no sales loads or trailing commissions baked into the product.

The point is not that one number is always smaller in every case. It is that the fee-only structure removes an entire category of cost — loads, 12b-1s, revenue sharing — that exists specifically because a broker-dealer relationship has a mechanism to collect it.

The Commission Products a "Fiduciary" Rep Can Still Sell You

This is where it gets real. A registered representative at a broker-dealer — even one holding a CFP or another fiduciary-adjacent credential — can still sell commission-based products, because Reg BI asks whether a recommendation was reasonable given cost, risk, and alternatives at that moment. It does not require finding the single cheapest option in the marketplace, forever.

Take a Unit Investment Trust. A UIT is a fixed, unmanaged basket of securities typically sold with a front-end sales charge, a deferred sales charge, and a creation-and-development fee, which together commonly total roughly 1.85% to 3.95% of the amount invested, per disclosure schedules published by firms including Edward Jones, Guggenheim, and Morgan Stanley. That entire charge is a one-time commission built into the product — fully disclosed, fully permitted under Reg BI, and fully compatible with a "best interest" recommendation.

Four Questions to Ask Before You Sign Anything

None of this makes commission-based advice wrong, or fee-only advice automatically better for every household. What matters is that the person sitting across from you can explain, in plain English, what structure you are entering and who they are working for. Ask it plainly:

1. Are you an IAR under an independent, fee-only RIA with no broker-dealer affiliation, a registered representative of a broker-dealer, or dually registered as a hybrid?
2. Does your firm have an affiliated broker-dealer, insurance company, or investment banking arm that can pay you for selling products?
3. For this specific recommendation, are you acting under the Investment Advisers Act fiduciary standard or under Reg BI's best-interest standard?
4. What is the all-in cost — expense ratio, sales charge, advisory fee — stacked together for this recommendation?

Those four questions do more than expose a fee. They reveal the structure behind the recommendation — and whether you are getting advice from someone who answers to you, or to the firm that signs their checks.

Your Real Retirement Team Is Made of People, Not Labels

Fee-only, commission, hybrid — these are structural descriptions, not character judgments. Some of the best people in the business work inside broker-dealer and wirehouse models. Some of the worst hide behind fee-only marketing. The structure only shapes the menu; the person decides what to put on it.

What you are really choosing is not a business model. It is a relationship with someone who will see your tax return, your fears, your family, your late-night questions, and the moment you finally stop working. That person should be able to look you in the eye and tell you exactly what structure you are in, how they are paid, and what standard applies when the market, the law, or your life changes.

If you cannot explain the structure back to them in a sentence, you do not yet understand the relationship. Ask until you can. Your future self — the one who has to live inside that structure for decades — will thank you.

Second Act 360 publishes education, not personalized investment advice. Costs, fee ranges, and product features vary by firm and contract. Read the prospectus, ADV Part 2, and disclosure documents before you commit.