See the lifetime drag of a 1% AUM advisor fee.
Wealth lost to fees
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DIY (no advisor fee)
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With advisor fee
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A fee is not a price, it is a share of your compounding
When an advisor quotes "just 1%," your brain hears one penny on the dollar and shrugs. That framing is wrong. The fee is not charged against the dollar you handed over, it is charged every year against the entire balance, including the gains that balance has already produced. So the fee is really a tax on your growth rate. If the market gives you 7% and the advisor takes 1%, you do not keep 99% of your return. You keep 6 of the 7 points of compounding, which is roughly 86% of the engine that builds wealth. Run that for a few decades and the difference is not rounding error, it is a second house.
This tool makes that visible by running two parallel accounts off the same starting balance and the same gross return. The do-it-yourself account compounds at the full rate. The advised account compounds at the rate minus the fee. There are no contributions and no withdrawals, so what you are seeing is purely the drag of the fee on a static lump sum. That is the cleanest way to isolate the cost.
Following $500,000 for thirty years
Take the defaults: a $500,000 portfolio, a 7% gross return, a 1% annual fee, held 30 years. The DIY account compounds at 7% and the advised account compounds at 6%. Here is each step the calculator runs.
| Step | Result |
|---|
The fee skims a single percentage point a year, yet it walks away with $934,382, more than your original $500,000. That is the part people refuse to believe until they see the arithmetic. The gap is not 30% (one point times thirty years). It is far larger, because each year the fee is calculated on a balance that the fee itself has been shrinking, so the lost dollars never get to compound for you. The drag compounds against you exactly the way returns compound for you.
When the fee is worth paying anyway
None of this means an advisor is a ripoff. A good one earns the fee by stopping you from selling in a crash, by coordinating Roth conversions and capital-gains harvesting, by managing withdrawal sequencing in retirement, and by talking you out of the expensive mistakes nobody models in a spreadsheet. Vanguard's research on advisor value puts the potential benefit at around three percentage points a year, most of it behavioral. The honest test is simple: are you getting financial planning, tax coordination, and discipline, or just an index portfolio you could have bought yourself? If it is the latter, you are paying a planning price for a custody service. A flat-fee or hourly planner often delivers the same advice without the percentage that grows with your balance.
Does the gross return I enter matter, or just the fee?
Both, and the higher the gross return, the bigger the dollar gap the fee creates, because the fee is skimming off a faster-growing base. At a 4% return the lost amount is much smaller in dollars than at 9%, even though the percentage point removed is identical. Enter a return you actually expect after inflation if you want a sober number. Most long-run US equity planning assumes something in the 6% to 7% nominal range.
How is this different from a fund expense ratio?
An advisor's AUM fee sits on top of the expense ratios of whatever funds they put you in. If the advisor charges 1% and parks you in funds averaging 0.4%, your true all-in drag is closer to 1.4% a year. Run the calculator at the combined figure to see the real picture, then compare it against holding low-cost index funds yourself at a few basis points.