Short answer: To read a 401(k) statement, start with the account summary, which shows the beginning balance, money added, gains or losses, fees and the ending balance for the period. Then read contributions by source (your deferrals versus employer money), the vested balance, the fee lines, any loan activity and the lifetime income estimate. The ending balance should equal the beginning balance plus contributions and earnings, minus fees and withdrawals. If it does not, the plan administrator is the one to ask.
The rest of this guide walks through each section in the order most statements print them, explains what federal rules require a statement to show, and describes what a statement cannot tell you.
What a 401(k) statement is, and how often federal law requires one
A 401(k) statement is the periodic benefit statement a plan administrator must send under section 105 of the Employee Retirement Income Security Act (ERISA). According to the Department of Labor's fact sheet on pension benefit statements (dated August 18, 2020, read on September 23, 2026), statements from defined contribution plans must go out at least annually, and at least quarterly when the plan lets participants direct their own investments. Most 401(k) plans let participants choose their funds, which is why most people see a quarterly statement.
The same fact sheet says a statement must show the participant's "total benefits accrued," which for a 401(k) means the account balance. The Department of Labor's booklet What You Should Know About Your Retirement Plan adds that the statement should show whether those benefits are vested.
A 401(k) is only one member of a larger family, and the layout of a statement makes more sense once the account type is clear. The guide to types of retirement accounts explained covers how a 401(k) differs from a 403(b), an IRA and a Roth account.
How to read a 401k statement, section by section
Layouts differ by recordkeeper, but the content is similar because the federal requirements are the same. The table below maps each common section to what it shows and what it can be checked against.
| Statement section | What it shows | What to compare it with |
|---|---|---|
| Account summary | Beginning balance, additions, gains or losses, fees, ending balance | The ending balance on the previous statement |
| Contributions by source | Employee pre-tax, Roth, after-tax, employer match, other employer money | Payroll records and the plan's match formula in the Summary Plan Description |
| Vested balance | The portion of the account the participant keeps on leaving the job | The vesting schedule in the Summary Plan Description |
| Investment detail | Each fund held, units or shares, price, value | The fund list in the plan's annual fee disclosure |
| Fees | Dollar amounts actually deducted, with a description | The annual participant fee disclosure |
| Loans and withdrawals | Outstanding loan balance, repayments, any distributions | Loan paperwork and payroll repayment amounts |
| Lifetime income illustration | Estimated monthly income from the current balance | Nothing to reconcile; it is an estimate based on set assumptions |
| Personal details | Name, date of birth, address, sometimes beneficiary | Your own records |
Account summary
The summary is usually on page one. It covers a defined statement period, often a calendar quarter, and prints a beginning balance, the total added during the period, the market change (sometimes labeled "gain/loss" or "change in value"), any fees or withdrawals, and an ending balance. Everything else on the statement explains one of these lines.
Contributions by source
This section splits money by where it came from. Common labels are "employee deferral" or "pre-tax," "Roth deferral," "after-tax," "employer match," "profit sharing" or "nonelective," and "rollover." The split matters because the sources can follow different tax and vesting rules. Pre-tax and Roth deferrals, for example, are taxed at different points, which is explained in traditional vs Roth explained.
Some statements also show year-to-date deferrals against the annual limit. For reference, the IRS announced in IR-2025-111 (November 13, 2025, read on September 23, 2026) that the 2026 employee contribution limit for 401(k) plans is $24,500, with a general catch-up limit of $8,000 for participants aged 50 and over and a higher catch-up limit of $11,250 for those aged 60 through 63. These figures change most years, so a statement from a different year may print different numbers. The IRS release also notes that a plan's own rules can set lower limits.
A health savings account will not appear here even if the same employer offers it. An HSA is a separate account under separate rules, covered in how does an HSA work.
Vested balance
Many statements print two totals: the account balance and the vested balance. The vested balance is the part the participant keeps if employment ends on the statement date. The Department of Labor's booklet states: "You immediately vest in your own contributions and the earnings on them." Any gap between the two totals therefore comes from employer money that has not yet vested under the plan's schedule. If the statement shows no vested figure, the Summary Plan Description sets out the schedule, and the plan administrator can confirm how years of service have been counted.
Investment detail and allocation
This section lists each fund in the account, the number of units or shares, the price at the end of the period and the value. Many statements add two charts: one showing how new contributions are directed and one showing how the whole balance is currently spread across funds. The two charts can differ because funds grow at different rates. The statement describes the account; it does not assess whether the mix suits anyone's situation. That question belongs to a financial advisor.
Fees
Under the Department of Labor's participant fee disclosure rule (29 CFR 2550.404a-5, which took effect for most plans in 2012), plans must give participants at least quarterly statements of the dollar amount of plan-related fees actually charged to their accounts, with a description of the services. These fees often appear as a line such as "recordkeeping fee," "administrative fee" or "advice fee." Fund expense ratios usually do not appear as a separate line because they are taken inside the fund's price, and they are listed instead in the plan's annual fee disclosure.
Loans and withdrawals
If the plan allows loans and one is outstanding, the statement shows the loan balance and the repayments received during the period. Repayments normally come through payroll, so a repayment missing from the statement is a question for the plan administrator. Any hardship withdrawal or other distribution also appears here as money leaving the account.
Lifetime income illustration
Under the SECURE Act of 2019 and a Department of Labor rule effective September 18, 2021, at least one statement a year must convert the balance into two estimated monthly income figures: one as a single life annuity and one as a joint and survivor annuity. The Department of Labor fact sheet lists the assumptions the rule requires: payments starting at age 67, a spouse of the same age, the 10-year constant maturity Treasury rate, and a set IRS mortality table. The rule also requires plans to explain that "these estimates are illustrative only and are not guarantees." The figure is a way of reading a lump sum as a monthly amount, not a forecast of anyone's retirement income.
Personal details and beneficiary
The Department of Labor booklet lists salary level, years of service, contact details, Social Security number, beneficiary designation and marital status among the items worth reviewing on a statement. A wrong date of birth or hire date can affect vesting and eligibility calculations, and a beneficiary designation is changed through the plan's own beneficiary form, not through a will.
The reconciliation check: does the balance add up?
Few guides show how to confirm a statement is internally consistent, yet every 401(k) statement follows the same equation:
Beginning balance + contributions + earnings or losses − fees − withdrawals ± loan activity = ending balance
Here is an illustration with hypothetical round numbers, chosen only to show the arithmetic and not drawn from any real plan:
| Line | Hypothetical amount |
|---|---|
| Beginning balance | $40,000 |
| Employee contributions | + $1,500 |
| Employer match | + $750 |
| Market change | + $900 |
| Recordkeeping fee | − $20 |
| Loan repayment received | + $300 |
| Ending balance | $43,430 |
If the lines on a real statement do not produce the ending balance printed on it, the most common explanations are timing (a payroll contribution withheld near the end of the period but deposited after it closed), a correction posted in the period, or a line the summary groups under a different label. The beginning balance should also match the ending balance on the previous statement. A second check is to compare the employee contribution total with payroll records for the same dates, and the employer match with the formula in the Summary Plan Description.
Why a personal rate of return can differ from a fund's return
Some statements print a "personal rate of return." It often differs from the returns listed for the funds, and that is not necessarily an error. A fund's published return measures one dollar held for the whole period. A personal return reflects when each contribution arrived: money deposited just before a drop or a rise experiences a different result from money that was already there. Two people holding the same fund can therefore see different personal returns in the same quarter. The statement's footnotes usually say which method the recordkeeper uses.
What a 401(k) statement cannot tell you
A statement is a snapshot, and it leaves several questions unanswered:
- The plan's rules. Vesting schedules, match formulas, loan terms and withdrawal options live in the Summary Plan Description, not the statement.
- The tax outcome. A statement shows pre-tax and Roth money separately but does not calculate tax owed on any future withdrawal. That is a question for a tax professional.
- Whether the investment mix fits anyone. The statement reports holdings. Suitability is a question for a financial advisor.
- What retirement income will be. The lifetime income illustration uses fixed federal assumptions, and the Department of Labor itself says it is not a guarantee.
- Fund expense ratios. These sit inside fund prices and appear in the annual fee disclosure instead.
When something on the statement looks wrong
The Department of Labor booklet directs participants who suspect an error to the plan administrator or the human resources department. It helps to have the statement itself, the period and line in question, and the matching payroll dates ready. Participants can also request the Summary Plan Description and the plan's annual report (Form 5500); the booklet notes that a copying fee may apply for documents beyond those provided automatically.
If the plan administrator does not resolve the issue, the booklet points to the Department of Labor's Employee Benefits Security Administration, reachable through askebsa.dol.gov or toll-free at 1-866-444-3272. Questions about a personal situation, such as how a withdrawal would be taxed or whether to change contributions, go to a tax professional or a financial advisor.
FAQ
How often should a 401(k) statement arrive?
Under ERISA section 105, as summarized in the Department of Labor's August 2020 fact sheet, a 401(k) plan that lets participants choose their investments must send a statement at least quarterly. A plan that does not let participants direct investments must send one at least annually.
What is the difference between account balance and vested balance?
The account balance is everything in the account. The vested balance is the portion the participant keeps on leaving the job. Employee contributions and their earnings are always fully vested, according to the Department of Labor, so any difference comes from employer contributions still on the plan's vesting schedule.
Where are 401(k) fees shown on a statement?
Dollar amounts deducted from the account, such as recordkeeping or advice fees, appear on the quarterly statement under the Department of Labor's fee disclosure rule. Fund expense ratios are usually not shown as a line because they come out of fund prices; they are listed in the plan's annual fee disclosure.
Is the monthly income estimate on a 401(k) statement a guarantee?
No. The Department of Labor requires the illustration to use set assumptions, including payments starting at age 67 and a spouse of the same age, and requires plans to state that the estimates are illustrative only and not guarantees.
Who can explain a line on a 401(k) statement that does not make sense?
The plan administrator, listed on the statement or in the Summary Plan Description, can explain how a figure was calculated. Questions about taxes or personal decisions go to a tax professional or a financial advisor.
