Retirement Planning

401(k) Fees: What You're Paying and How to Find Out

Joseph Hull, Founder of Black Apple Group

October 12, 2026

Person reviewing 401(k) retirement account statement and fee documents

Understanding the costs inside your workplace retirement plan

Most people know that a 401(k) is a tax-advantaged way to save for retirement. Fewer people know exactly what they are paying to use one. Fees are charged in several ways, and some of them reduce your investment returns without ever appearing as a separate line item on your statement.

A 2021 report from the U.S. Government Accountability Office found that many 401(k) participants do not know what fees they are paying or how those fees affect their retirement savings over time.

The four main types of 401(k) fees

Plan fees generally fall into four categories. Not every plan charges all four, and the amounts vary widely.

Investment expense ratios

This is the annual cost of owning a mutual fund or other investment inside your plan. It is expressed as a percentage of your account balance and deducted automatically from the fund's returns — not as a separate charge on your statement. A fund with a 1.00% expense ratio costs $10 per year for every $1,000 you have invested in it.

Administrative and recordkeeping fees

These cover the cost of running the plan — recordkeeping, compliance, participant statements, and other administrative services. They may be charged as a flat dollar amount per participant, as a percentage of plan assets, or both. Some plans pass these costs directly to participants; others absorb them at the employer level.

Individual service fees

These are charged for specific transactions you choose to make, such as taking a loan from your account, requesting a hardship withdrawal, or rolling over your balance when you leave the company. Not everyone pays these — they apply only when you use the service.

Managed account fees

Some plans offer a professionally managed account option where an investment manager selects and adjusts your investments for you. This service typically carries an additional annual fee on top of the underlying fund expense ratios.

Why fees matter more than they appear

A small difference in annual fees can have a significant effect on your account balance over a long period of time. The following hypothetical example illustrates the concept.

Fee Scenario	Ending Balance	Total Fees Paid
0.25% annual fee	$195,618	$12,382
0.75% annual fee	$179,084	$28,916
1.25% annual fee	$163,862	$44,138
1.75% annual fee	$149,892	$58,108

Hypothetical example only. Assumes a $50,000 starting balance, no additional contributions, and a 6% annual gross return before fees over 25 years. Actual investment returns are not guaranteed and will vary. This example is for educational purposes only and does not represent any specific investment or plan.

The difference between the lowest and highest fee scenario in this example is more than $45,000 over 25 years — on the same starting balance and the same gross return. The money paid in fees is money that does not compound in your account.

Where to find your fee information

Federal law requires that 401(k) plan participants receive fee disclosures. The primary document is called the 404a-5 disclosure, sometimes referred to as the participant fee disclosure notice. Your plan administrator is required to provide it at least annually.

Check your email or mail for the annual fee disclosure notice from your plan administrator.
Log in to your plan's online portal and look for a section labeled "Plan Documents," "Fee Disclosure," or "Investment Options."
Review the fund fact sheets or prospectuses for each investment option — the expense ratio is listed there.
Contact your HR department or plan administrator directly and ask for the 404a-5 participant fee disclosure.

Questions to ask your plan administrator

What is the total annual fee I am paying, including both investment expense ratios and administrative fees?
Are any administrative fees charged directly to my account, and if so, how much?
Does the plan offer lower-cost index fund options?
What fees apply if I take a loan or make a withdrawal?
Is there a managed account option, and what does it cost?

Fees are one factor — not the only one

Fees are worth understanding, but they are one factor among several when evaluating a 401(k). Other considerations include:

Employer matching contributions — a match is part of your total compensation and can significantly affect your overall return.
Tax advantages — traditional 401(k) contributions reduce your taxable income today; Roth 401(k) contributions grow tax-free.
Investment choices — the range and quality of available funds matters alongside their cost.
Plan services — access to financial education, planning tools, or professional guidance may have value that offsets some costs.

A plan with slightly higher fees but a generous employer match may still be the right place to contribute, at least up to the match. The goal is to understand what you are paying so you can make an informed decision.

Learn more about retirement planning

Black Apple Group helps individuals and families understand how their retirement accounts, insurance coverage, and financial plans work together. If you have questions about your 401(k) fees or your overall retirement strategy, we are happy to talk.

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Sources and further reading

Educational information only. This article is not legal, tax, or individualized financial advice. 401(k) plan rules, fees, and options vary by plan. Consult your plan administrator, a qualified financial professional, or a tax advisor before making decisions about your retirement accounts.