How Much Does a Financial Advisor Cost for a Business Owner? (And Do You Even Need One?)
Stoy Hall, CFP, is the founder of Black Mammoth and the Modern Family Office. Inside the Modern Family Office is Black-led and built to stay in the Black.
Black Mammoth, Inc. is a Registered Investment Advisor. Information presented is for educational purposes only and does not intend to make an offer or solicitation for the sale or purchase of any specific securities, investments, or investment strategies. Investments involve risk and unless otherwise stated, are not guaranteed. Be sure to first consult with a qualified financial advisor and/or tax professional before implementing any strategy discussed herein.
The industry is very good at making sure you never quite know what you're paying. Let's fix that.
Here's a game the financial industry plays better than anyone. They've built an entire pricing model designed so you never actually feel what you pay. Ask most people with an advisor what their fee is, and you'll get a shrug. That's not an accident. That's the design.
Fee transparency is the whole reason Black Mammoth exists the way it does, so let me pull the curtain back on what this actually costs, and whether it's even worth it for you.
What financial advisors actually charge
There are four common ways advisors get paid. Know all four and you can't get played.
Percentage of assets (AUM). The most common model by far. You pay a percentage of the money they manage. The 2026 State of Financial Planning Fees study from Datos Insights and Envestnet MoneyGuide puts the average AUM fee at about 0.96%, call it 1%, with most landing between 0.75% and 1.5%. Flat fee / retainer. A set dollar amount for the advice, no matter your account size, usually $3,000 to $15,000 a year; the average annual retainer now runs about $6,815 per NerdWallet. Hourly. Like a lawyer, typically $200 to $400 an hour. One-time plan. A standalone financial plan averages around $3,000.
The fee you never actually see
Here's the part that should make you sit up. With the percentage model, the fee is deducted directly from your accounts, usually quarterly, so it never shows up as a bill you pay. It just quietly leaves. That's exactly why so many people have no idea what they're spending.
Run the real numbers. One percent doesn't sound like much until you translate it: on a $1 million portfolio, that's $10,000 a year, every year, whether your advisor did ten hours of work or a hundred. Compare that to a plumber who hands you an invoice. You'd never accept "I'll just take a little out of your bank account four times a year and we won't discuss it." But dressed up in a percentage, that's the industry standard.
Flat fee vs percentage: the math that matters when you're growing
This is where business owners get quietly crushed, because your assets are supposed to grow. And under the percentage model, your fee grows right along with them, for the same work.
Watch what happens. A $7,500 flat fee is 0.75% of a $1 million portfolio. On a $3 million portfolio, that same $7,500 is just 0.25%. Now flip it: a 1% AUM fee on that $3 million is $30,000 a year, four times what you paid at $1 million, even though managing it didn't get four times harder. You built the wealth. Why does the fee automatically triple for it?
That's the core case for flat-fee planning, and it's why the industry is slowly being dragged toward it. The percentage model ties your cost to your success instead of to the work. A flat fee ties your cost to the actual advice. For someone actively building a business and a portfolio, that difference compounds into serious money over a couple of decades.
Do you even need an advisor if you own a business?
Let me be the rare advisor who says: maybe not. If your financial life is genuinely simple and you've got the time and discipline to run it yourself, you might just need an hourly advisor for the occasional gut-check. I'd rather tell you that than sell you something you don't need.
But here's what actually happens to business owners. Complexity arrives fast and all at once, your entity structure, your taxes, your cash flow, your retirement plan, your estate plan, and they all touch each other. A decision in one quietly moves the others. Most owners aren't overpaying for advice; they're losing money because nobody is coordinating any of it. That's the real question. Not "can I pick my own investments," but "who's making sure all these moving parts work together instead of against each other."
The counterpoint worth knowing
I'll be fair to the percentage model, because it's not evil. For someone who mostly wants investment management handled and doesn't want to think about it, AUM is simple and the incentive is at least loosely aligned, your advisor does better when your portfolio does better. And a flat fee only works if you actually value planning enough to pay a visible price for it; some people would rather never see the charge.
Hourly has a blind spot too: it can undercharge for the ongoing, proactive work that actually moves the needle, so people ration advice they should be getting. No model is perfect. The point isn't that one structure is holy and the others are sins. It's that you should be able to say, out loud, exactly what you pay and what you get. If you can't, the model isn't your problem. The opacity is.
Your move: make the fee visible
1. Ask the question in writing. "How are you paid, in total, including anything I don't see on a statement?" A straight answer is a green flag. A dodge is your answer.
2. Convert every fee to dollars. Don't let anyone leave it as a percentage. One percent is $10,000 on a million. See the real number.
3. Run your own crossover math. Take a flat-fee quote and divide it by your expected assets in five and ten years. Watch the percentage shrink. Then compare it to what 1% will cost you at those same levels.
4. Judge value, not just rate. A fee is only high if the work doesn't justify it. Coordinated tax, business, and estate planning can be worth far more than it costs. A model portfolio and an annual phone call is not.
Pay for advice, not for access to your own money
The goal was never to find the cheapest advisor. It's to know exactly what you're paying and exactly what you get for it, and to make sure the fee is tied to the work, not just skimmed off the wealth you built. Transparency isn't a nice-to-have in this industry. It's the entire test. If you can't see the fee, that's not a detail. That's the whole story.
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Receipts:
2026 State of Financial Planning Fees (Datos Insights & Envestnet MoneyGuide): average AUM fee ~0.96%; retainer average ~$6,815 (NerdWallet); hourly $200–$400; one-time plan ~$3,000, via Harness — https://www.harness.co/articles/average-fees-for-financial-advisors/
Kitces Research / SmartAsset: median hourly rate $300; median standalone plan $3,000; retainer median $4,500 — https://smartasset.com/financial-advisor/financial-advisor-cost
Flat-fee advisor fee guide: AUM fees deducted quarterly (never a line-item bill); flat-fee crossover math ($7,500 = 0.75% at $1M vs 0.25% at $3M) — https://flat-fee-financial-advisors.com/financial-advisor-cost/
Domain Money 2026 fee guide: AUM typically 0.75–1.5%; flat fees $3,000–$12,000; hourly $250–$600 — https://www.domainmoney.com/post/how-much-does-a-financial-advisor-cost