How do fiduciaries get paid? The short answer: being a fiduciary describes a legal duty — acting in your best interest — not a specific way of billing. In practice, most fiduciary advisors are paid one of two ways: fee-only, meaning solely by client fees, or fee-based, meaning client fees plus commissions on certain products. Understanding which applies to your advisor tells you more about potential conflicts of interest than the fiduciary label by itself.
Fiduciary duty is a legal standard, not a fee structure
A fiduciary is legally required to act in your best interest ahead of their own. That's a standard of conduct — it says nothing on its own about whether the advisor charges a flat fee, a percentage of assets, or earns commissions. Two advisors can both be fiduciaries and still be compensated in very different ways, with different conflicts to watch for.
Fiduciary duty vs. compensation model
Fiduciary duty is a legal obligation to act in your best interest. Fee-only and fee-based describe how the advisor is paid. An advisor can be a fiduciary under either compensation model — the label and the paycheck are two separate questions.
Fee-only fiduciaries
Fee-only fiduciaries are paid exclusively by their clients — through an AUM percentage, a flat fee, or an hourly rate — and accept no commissions from product providers. Because their income doesn't depend on which products they recommend, this is generally considered the model with the fewest built-in conflicts of interest.
Fee-based fiduciaries
Fee-based fiduciaries charge client fees but can also earn commissions on certain products, such as insurance or specific funds. They can still owe you a fiduciary duty on the advice they give — but it's worth asking directly whether a specific recommendation also pays them a commission, since that's where a conflict is most likely to show up.
| Fee-only fiduciary | Fee-based fiduciary | |
|---|---|---|
| Paid by | You, directly | You, plus product providers |
| Commissions allowed | No | Yes, on certain products |
| Typical billing | AUM %, flat fee, or hourly | AUM % or flat fee, plus commissions |
| Fiduciary duty applies | Yes | Yes, on the advice given |
Why the distinction matters
If you only ask "are you a fiduciary?" you can get a truthful "yes" from advisors paid in very different ways. Asking the follow-up — fee-only or fee-based, and does anything you recommend to me pay you a commission — gives you a clearer picture of where a conflict of interest could realistically show up, even with a fiduciary duty in place.
An illustrative example
Two advisors both disclose they're fiduciaries. Advisor A is fee-only and charges 0.9% of assets under management, with no other compensation. Advisor B is fee-based, charges a similar 0.8% fee, but also earns a commission if they recommend a particular insurance product. Both can act in your best interest — but only asking about the fee model surfaces that Advisor B has an extra incentive worth understanding before that specific recommendation.
Questions to ask a fiduciary about their pay
- Are you fee-only or fee-based?
- Do you or your firm earn a commission on anything you're recommending to me?
- Can I see your Form ADV and fee schedule in writing?
- Does your fiduciary duty apply to every account you manage for me, or only some?
How do fiduciaries get paid?
Most fiduciary advisors are paid fee-only (solely by client fees — AUM percentage, flat fee, or hourly) or fee-based (client fees plus commissions on certain products). Being a fiduciary is a legal duty, not a specific compensation model, so it's worth asking which applies.
Can a fiduciary earn commissions?
A fee-based fiduciary can earn commissions on certain products while still owing you a fiduciary duty on the advice given. A fee-only fiduciary, by definition, does not earn commissions at all.
Is fee-only always better than fee-based for a fiduciary?
Fee-only generally has fewer built-in conflicts of interest, since no part of the advisor's income depends on which products they recommend. That doesn't mean every fee-based fiduciary gives worse advice — it means it's worth asking specifically whether a given recommendation also pays them a commission.
What Is a Fiduciary Financial Advisor?
The legal standard behind the fiduciary label, and how to verify it.
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