How investment fees delay your FIRE date

The short answer

Fees come straight out of your return, so a 1% yearly fee does the same damage as earning 1 percentage point less. In our example, a 1% fee pushes the Coast FIRE date back by 6 years 11 months, from age 39 to 46. If Alex keeps saving until 60, it also leaves about $282,000 less at 60; if Alex stops saving at 39 anyway, the gap is about $222,000.

Fees are also one of the few inputs you control. You can't choose your returns or inflation, but you can usually choose what you pay for the investments that earn them.

The fees you may be paying

The SEC's investor bulletin on fees sorts them into three groups. The names vary by provider, but most costs fit one of these:

Ongoing percentage fees matter most for long-term savers, because they're taken every year from a balance that keeps growing. Many are also invisible. A fund's expense ratio is deducted inside the fund, so you never see a bill; it just shows up as a slightly lower return. An advisory fee charged as a percentage of assets works the same way, on top of the funds' own costs.

Flat fees behave differently. A $50 yearly account fee is a big share of a $2,000 balance and almost nothing on $500,000. A percentage fee does the opposite: it costs little while your balance is small and grows with every dollar you add. For anyone heading toward a seven-figure portfolio, the percentage fees are the ones to watch.

The SEC bulletin illustrates this with $100,000 invested for 20 years at a 4% return, comparing ongoing fees of 0.25%, 0.5% and 1%. The gap between them grows over time. Below, we run the same idea through a full Coast FIRE plan.

Why a 1% fee is a 1-point lower return

Our calculators take fees off the return before inflation:

The two lines are identical. Paying 1% on a 7% return leaves you exactly where a 6% return with no fees would. That's why the table in our guide to real vs nominal returns, which shows what one point of return does, applies to fees too.

Measured against the growth that actually builds your wealth, the fee looks even bigger. Without fees, Alex's money grows 4.39% a year after inflation. A 1% fee cuts that to 3.41%, removing about 22% of the real growth. A fee that sounds like one seventh of a 7% return takes more than a fifth of what you really earn.

The same comparison holds once you retire. On a $1,000,000 portfolio, a 1% fee is $10,000 a year, a quarter of the $40,000 that a 4% withdrawal rate would let you spend. The fee keeps running for as long as you stay invested.

Fees and the coast date

Our example saver, Alex, is 32, wants to retire at 60, has $185,000 invested and adds $1,500 a month. Alex plans to spend $40,000 a year, which needs $1,000,000 at a 4% withdrawal rate. We assume a 7% return before fees and 2.5% inflation, and every figure is in today's money.

Two things happen at once. A lower return means the portfolio grows more slowly, and it also raises the amount Alex needs before coasting, because there's less growth to rely on afterward. At a 1% fee, Alex needs $636,794 invested to coast instead of $417,332.

The delay also means more saving. Each extra month is another $1,500 contributed. A 0.5% fee means 37 more months, or $55,500 of extra contributions. A 1% fee means 83 more months, or $124,500. At 1.5%, Alex keeps saving until 50, for $202,500 more.

Notice that each step up costs more than the last. Going from 0% to 0.5% costs about three years. Going from 0.5% to 1% costs almost four more. Fees hurt most when your real return is already modest.

What fees don't change is the odds at the coast date. In our simulation of 1,000 markets, stopping exactly on the coast date reaches $1,000,000 by 60 in about half of them at every fee level, from about 50% to 52%. The calculator moves the date to make up for the fee. You pay for fees in time, not in risk, as long as you include them.

Fees and your portfolio at 60

Another way to see the cost is to keep the plan fixed and look at the end result. Here are two versions: Alex stops saving at 39, the no-fee coast date, or keeps saving $1,500 a month all the way to 60.

If Alex coasts at 39 but pays 1% without allowing for it, the portfolio reaches only $781,769 by 60. At a 4% withdrawal rate, that supports about $31,000 a year instead of $40,000. This is the hidden danger of leaving fees out of a plan: the coast date looks reached, but the money won't get there.

Full FIRE moves too. Saving the whole time, Alex reaches $1,000,000 in 19 years 11 months with no fees, 21 years 2 months at 0.5%, 22 years 7 months at 1% and 24 years 3 months at 1.5%.

How many dollars fees cost

The full cost of a fee has two parts: the fees you pay, and the growth those dollars would have earned if they had stayed invested. Comparing each projection with the no-fee one gives the total. For Alex saving until 60:

We estimated the fees paid by applying each fee to the projected balance month by month. The total cost is the difference between the portfolio at 60 with and without the fee. Over 28 years, Alex contributes $504,000. A 1% fee costs more than half of that amount, about 56%.

The pattern matters more than the precise figures. Because fees are charged as a percentage of a growing balance, most of the cost falls in the later years, when the balance is largest. That's easy to miss when you look at a fee in a single year, when $1,850 on $185,000 doesn't look like much.

That doesn't mean every fee is wasted. Advice can be worth paying for if it helps you avoid an expensive mistake, such as selling everything in a crash, or saves you tax. The point is to know the price. A percentage fee paid for 28 years is one of the largest purchases most savers ever make, and it deserves the same scrutiny as a house or a car.

Practical ways to lower fees

None of these involve picking a particular product. They're habits that work with any provider:

• Find the expense ratio of every fund you own. It's listed in the fund's prospectus and usually on its fact sheet or your provider's fund page. Compare it with other funds that hold similar investments.
• Look at broad index funds. Funds that track a market index don't pay a team to pick investments, so they tend to have lower expense ratios than actively managed funds in the same category.
• Check your workplace plan's menu. Many plans offer a range of funds with very different costs. Choosing the lower-cost option in each category can lower your blended fee without changing your mix much.
• Ask how any adviser is paid. The SEC suggests asking every financial professional this. A fee-only adviser paid a flat or hourly fee can be far cheaper over decades than one charging a percentage of your balance. A 1% advisory fee on a $1,000,000 portfolio is $10,000 a year.
• Avoid unnecessary transactions. Frequent trading, sales loads and early-withdrawal charges all chip away at your balance.
• Read your statements. Ask for a fee schedule, and look for account, inactivity and transfer fees you could avoid.

Before moving money to cut costs, check for taxes and exit charges, as the SEC bulletin also advises. Selling investments in a taxable account can trigger a tax bill, and some products charge you to leave.

Adding fees to your plan

In the Coast FIRE calculator, enter your total yearly fees under Assumptions as investment fees. Use the weighted average of your funds' expense ratios, plus any advisory fee charged as a percentage of your balance. If 80% of your money is in a fund costing 0.05% and 20% in one costing 0.6%, your blended fee is 0.16%.

Our defaults start at 0% fees so that the example stays simple, as our methodology page explains. Leaving that at zero when you actually pay fees is one of the easiest ways to make a plan look better than it is. Once you've added them, the what-if rows show what a further 0.5 point would do, and you can compare that with other changes, such as saving more or retiring later. Our guide on reaching Coast FIRE faster ranks fees against the other levers.

Fees also affect your full FIRE number indirectly. The Trinity study, one of the main sources of the 4% rule, did not adjust for investment costs, so if you'll keep paying meaningful fees in retirement, a slightly lower withdrawal rate is a reasonable allowance. You can see the effect on your target in the FIRE number calculator.

Sources

The worked examples are our own calculations, explained on our methodology page. Fee types and tips were checked against these sources in October 2026:

1. How Fees and Expenses Affect Your Investment Portfolio. US Securities and Exchange Commission, Investor Bulletin, 2014. Shows how ongoing fees of 0.25%, 0.5% and 1% compound over 20 years.
2. Retirement Savings: Choosing a Withdrawal Rate That Is Sustainable. Philip L. Cooley, Carl M. Hubbard and Daniel T. Walz, AAII Journal, 1998. The “Trinity study”: withdrawals of 3% to 4% rarely ran out of money over periods of up to 30 years with a mix of stocks and bonds.