If your 401(k) balance looks stuck, the cause is usually one of a handful of things: you’re not putting enough in, fees are quietly draining returns, your money is invested too conservatively for your timeline, a loan or withdrawal pulled money out of the market, part of the balance isn’t vested yet, inflation is canceling your gains, or your employer is making payroll errors. Each has a fix, and most of them are things you can check this week.
You’re Not Contributing Enough
Compound growth needs principal to work with. If you were auto-enrolled at a 3% default deferral and never raised it, your balance may barely register movement once normal market swings are factored in. The single biggest lever on 401(k) growth, especially in your early and middle career, is the amount going in.
For 2026, you can defer up to $24,500 of your salary into a 401(k). If you are 50 or older, you can add an $8,000 catch-up contribution for a personal limit of $32,500. If you are between 60 and 63, a higher catch-up of $11,250 applies, allowing up to $35,750 in total deferrals.1Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 With employer contributions included, the combined annual limit for all additions to your account is $72,000.2Internal Revenue Service. Notice 2025-67 – 2026 Amounts Relating to Retirement Plans and IRAs
Then there’s the match. Most employers contribute 50 cents or a dollar on every dollar you defer, up to a set percentage of your salary. If your deferral rate doesn’t reach the threshold for the full match, you’re leaving guaranteed money behind, and that match is an immediate return that doesn’t depend on the market. Pull your plan’s summary and check the match formula against your current deferral rate.
Auto-Enrollment May Have Left You Stuck at 3%
Plans established after December 29, 2022 must auto-enroll new employees at a default deferral rate between 3% and 10%, then increase that rate by one percentage point each year until it reaches at least 10%, with a 15% cap on escalation.3Federal Register. Automatic Enrollment Requirements Under Section 414A Plans that existed before that date aren’t required to escalate. If your employer’s plan is older and you never manually raised your deferral, you could still be sitting at that initial 3%. Even a one- or two-point bump adds up quickly over a career.
Fees Are Quietly Eating Your Returns
Every fund in your plan charges an expense ratio, an annual percentage deducted from fund assets to cover management costs. Actively managed funds usually charge more than index funds because of the research and trading involved. A fund with a 1% expense ratio that earns a 7% gross return delivers only 6% to you, and that gap compounds into tens of thousands of dollars over a career.
On top of expense ratios, most plans charge administrative fees for recordkeeping, compliance, and account servicing. Smaller employer plans tend to carry higher total costs as a percentage of assets, sometimes topping 1% on their own, while the largest plans can come in well under 0.50%. If you work for a small company, the combined fee drag could be enough to offset a modest year of market gains entirely.
You have the right to see exactly what you’re paying. Federal rules require your plan administrator to give you fee disclosures on a regular basis, listing the expense ratio for every investment option and any administrative or individual service charges.4eCFR. 29 CFR 2550.404a-5 – Fiduciary Requirements for Disclosure in Participant-Directed Individual Account Plans Read the most recent one. If your money sits in a high-cost actively managed fund and the plan menu offers a comparable low-cost index option, switching can meaningfully change the trajectory of your balance.
Your Investment Mix Is Too Conservative
How your money is divided among stocks, bonds, and cash-like investments has an enormous effect on growth. Stable value funds and money market funds protect principal but usually produce returns that barely keep up with inflation. If most of your balance sits there, the account may inch upward each quarter without ever building real wealth.
Stock-heavy portfolios can deliver strong long-term returns but will go through flat or down years that mirror the broader market. During those stretches, your balance may not move upward even if you keep contributing. A diversified mix of stocks and bonds matched to your time horizon is the standard approach to balancing growth against short-term volatility.
Check Your Target-Date Fund’s Year
Many plans use target-date funds as the default investment for auto-enrolled employees. These funds start stock-heavy when your target retirement year is far off and gradually shift toward bonds and cash as that date approaches, a process called the glide path.5U.S. Department of Labor. Target Date Retirement Funds – Tips for ERISA Plan Fiduciaries If you were placed in a fund with the wrong target year, say a 2030 fund when you plan to retire in 2055, you could be invested far too conservatively for your age, which caps your growth for reasons that have nothing to do with the market.
A Loan or Withdrawal Pulled Money Out
A 401(k) loan removes money from the market and eliminates its ability to earn returns while the loan is outstanding. Federal law lets you borrow up to the lesser of $50,000 or half your vested balance, generally repaid within five years through level payments at least quarterly.6Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts While you repay, the borrowed amount is not invested, not compounding, and not participating in any market rally. That missed growth is the real cost of a 401(k) loan, and you can’t recover it later.
Leaving your job with an outstanding loan makes it worse. The unpaid balance can be offset against your account, and to avoid tax on the offset amount you generally need to roll over an equivalent sum to another eligible retirement plan by your tax filing deadline, including extensions, for the year the offset occurs.7Internal Revenue Service. Plan Loan Offsets Miss that window and the outstanding balance becomes a taxable distribution.
Hardship withdrawals and other early distributions taken before age 59½ generally trigger a 10% additional tax on top of ordinary income tax. Unlike a loan, a withdrawal is permanent; the money leaves the plan and cannot go back. Between the penalty, the tax, and the lost compounding, a $10,000 hardship withdrawal in your 30s can cost many times that by retirement. Some exceptions to the 10% penalty exist, including disability, substantially equal periodic payments, and certain medical expenses, but income tax still applies in most cases.8Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
Part of Your Balance Isn’t Actually Yours Yet
Your statement may show a total that includes employer contributions you don’t fully own. Your own deferrals are always 100% vested immediately. But employer matching and profit-sharing contributions typically vest over time under one of two schedules set by federal law.9Office of the Law Revision Counsel. 26 USC 411 – Minimum Vesting Standards
- Cliff vesting: you own 0% of employer contributions until you complete three years of service, when you become 100% vested at once.
- Graded vesting: you gain ownership gradually, starting at 20% after two years and increasing by 20% each year until reaching 100% at six years.
If you’re only a year or two into the job, a meaningful chunk of the match on your statement may not be yours yet. Look for the vested balance rather than the total balance; most plan portals display both. That number is what you could actually take with you if you left today, and looking at it can reframe what feels like stagnation into a more accurate picture of your real savings.
Inflation Is Canceling Your Gains
Even when your balance grows in dollar terms, inflation can wipe out that progress in purchasing power. If your account earns 4% in a year when the Consumer Price Index also rises 4%, your real return is essentially zero. You have more dollars, but those dollars buy the same amount as before.
This hits accounts invested heavily in bonds or stable value funds hardest, because their returns tend to sit close to the inflation rate. To build wealth that actually improves your future standard of living, returns need to beat inflation by a meaningful margin. In high-inflation periods, a nominally positive return can still leave your account standing still in real terms. Comparing your annual return to the inflation rate gives you a more honest read on progress than the raw dollar figure.
Your Employer May Be Making Mistakes
Sometimes the problem isn’t the market or your choices; it’s payroll. The most common employer error is depositing your contributions late. Federal law requires the employer to deposit the money withheld from your paycheck as soon as it can reasonably be separated from company funds, and no later than the 15th business day of the month following the payday. If the employer can reasonably process deposits sooner, that faster timeline becomes the legal deadline.10U.S. Department of Labor. ERISA Fiduciary Advisor – What Are the Fiduciary Responsibilities Regarding Employee Contributions?
A more serious error is failing to implement your deferral election at all, so the money is never withheld or deposited. When this happens, the employer is generally required to make a corrective contribution equal to 50% of the missed deferral, adjusted for the investment earnings you would have received, and you’re fully vested in that corrective contribution immediately.11Internal Revenue Service. Fixing Common Plan Mistakes – Correcting a Failure to Effect Employee Deferral Elections
To catch these problems early, compare each pay stub to your 401(k) account activity. Confirm the amount withheld matches a new contribution posted within a few business days. If contributions are missing, amounts are wrong, or deposits routinely lag, raise it with HR or the plan administrator in writing. If it isn’t corrected, you can file a complaint with the Department of Labor’s Employee Benefits Security Administration.