Financial Advisor Cost Calculator: Fees Paid, and the Growth They Removed
Last updated August 2026
Short answer
The number that matters is not the fees you pay. It is the fees plus the growth those fees would have produced, and over long periods the second part is frequently larger than the first, because money paid out early stops compounding for every remaining year. Include fund expense ratios alongside the advisory fee, since they are charged on top and are usually left out. And read the result knowing it measures cost and cannot measure value. Walnut is informational and is not an investment adviser.
Most published versions of this show fees paid and stop there, which understates the answer considerably. The calculator below runs the same portfolio twice, once with the fee and once without, and separates how much of the difference is the fee itself and how much is the growth it removed.
- Fees paid over 25 years
- $185,369
- Growth those fees would have earned
- $149,066
- Total cost of the fee
- $334,435
Ending balance $1,396,907 with the fee, $1,731,342 without it. Fund expense ratios are charged on top of the advisory fee and are not included here, so raise the fee figure by your funds' costs to see the all-in number. An illustration on assumptions you chose, not a projection.
What to include
| Cost | Why |
|---|---|
| The advisory fee | The percentage, retainer or hourly total. The part everyone already counts |
| Fund expense ratios | Charged inside every fund you hold, on top of the advisory fee. Add them to the fee figure |
| Any platform or wrap charge | Some arrangements add a separate account fee. It appears on the statement if it exists |
| Anything paid by a third party | Commissions and revenue sharing do not hit your account and still come out of your returns |
The second row is the one that changes the answer most and gets omitted most. Fund costs are deducted from returns rather than billed, so they never appear as a charge, and they apply under every model including fee-only. Adding them to the advisory fee gives the all-in figure, which is the only number worth comparing between arrangements. See the three layers of advisor compensation.
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Four things the number leaves out
1. Whatever the advice was worth
The largest missing term and the one nobody can compute. If an advisor prevented one panic sale, corrected a badly structured account, or caught a beneficiary designation that was wrong, the value may exceed everything the calculator shows.
2. Tax coordination you would not have done
Asset location, harvesting through the year, Roth conversions in the right window. Real amounts, situational, and impossible to estimate without knowing your bracket and account mix.
3. What you would actually have done alone
The calculator compares against a disciplined version of you who invested the same way and never interfered. For some people that comparison is fair and for others it is fictional, and only you know which.
4. Every change over the period
Contributions stop, balances jump, fees get renegotiated, you switch models. A single set of assumptions run for twenty-five years is an illustration rather than a forecast.
The third is the one people should sit with honestly. The calculation compares you against a disciplined alternative version of yourself who invested the same way and never interfered, and for a substantial number of people that person does not exist. If your unadvised history includes selling during a decline, the fee bought something the arithmetic cannot see.
How to read the result
| What you notice | How to take it |
|---|---|
| The fee is small and the total is large | Correct, and it is the compounding rather than a trick. The money paid out stops growing |
| Most of the cost is growth, not fees | Expected at long horizons. It is why the same fee matters more the earlier you start paying it |
| The number changes a lot with the growth rate | It does, so treat it as a comparison between two fee levels rather than as a prediction |
| A flat fee looks better at high balances | That is arithmetic, not opinion. Run a retainer against the percentage before renewing |
The third row is the important caveat. The absolute figure swings substantially with the assumed growth rate, so it is not a prediction of anything. What holds up is the comparison: run it twice at two different fee levels with everything else held constant, and the gap between those two results is reliable even though neither individual number is.
What to do with it
Take the figure to a conversation rather than to a conclusion. Ask what the fee covers beyond portfolio management, which is the cheapest thing in the market. Ask whether a flat retainer covering the same services is available, since above a few hundred thousand dollars it frequently costs less for identical work. And ask which of these costs would still exist if you managed the portfolio yourself, which separates what you are paying the advisor from what you are paying the funds.
Related: is one percent worth it, the three fee models, and what the fee actually buys.
FAQ
How do I calculate what a financial advisor costs?
Multiply the fee percentage by your balance for the annual figure, then project it forward, because the real cost is the fees paid plus the growth those fees would have produced. Add fund expense ratios to the advisory fee, since they are charged on top and are usually left out.
How much does a 1% fee cost over 20 years?
Far more than twenty times the first year's fee, because each payment is money removed from a compounding balance. The calculator on this page separates the two components, and at long horizons the lost growth is frequently larger than the fees themselves.
Should I include fund expense ratios in the calculation?
Yes. They are charged inside every fund and deducted from returns before you see them, so they never appear as a line item and they apply under every advisory model. Adding them to the advisory fee gives the all-in number, which is the one worth comparing.
Does this calculator prove advisors are not worth it?
No. It measures cost and cannot measure value, and the missing terms are large: preventing one expensive mistake, tax coordination you would not have done, or a structural error caught early. What it does is make the cost side concrete so you can weigh it against what you are getting.
What is a reasonable advisory fee?
It depends on the balance and on what is included, which is why the useful test is comparing a percentage against a flat retainer for the same services. Around a percent is commonly cited at smaller and mid-sized accounts, and the same rate becomes hard to defend as balances grow.
Why is the lost growth larger than the fees paid?
Because each fee payment is removed early and would otherwise have compounded for the remaining years. Over long periods the compounding on withdrawn money outgrows the withdrawals themselves, which is the same mechanism that makes investing work, running in the other direction.
How accurate is this?
It is an illustration on assumptions you chose rather than a projection. Real returns vary year to year, contributions change, and fees get renegotiated. Use it to compare two fee levels against each other, which holds up, rather than to predict a balance, which does not.
What should I do with the number?
Take it to a conversation. Ask what the fee includes beyond portfolio management, ask whether a flat retainer covering the same services is available, and ask which of the costs would remain if you managed the portfolio yourself. The figure makes those questions concrete.
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Walnut is informational and is not an investment adviser, and nothing here is investment advice. The calculator is an illustration on assumptions you supply, not a projection, and it excludes taxes, changes in contributions and any value the advice itself may provide.