401(k) Limits in 2026: How to Actually Max Your Retirement Account

The IRS adjusts 401(k) contribution limits annually for inflation. For 2026, the employee contribution limit increased to $24,500, up $1,000 from the $23,500 limit in 2025. This is the amount you can contribute from your own paycheck, before any employer matching.

The total annual additions limit — which includes both employee contributions and employer contributions (matching, profit-sharing) — increased to $70,000 for 2026. This is the ceiling on what can flow into the account from all sources combined.

For workers aged 60, 61, 62, and 63, SECURE 2.0 introduced an enhanced catch-up provision: these workers can contribute up to $35,750 in 2026 — the regular $24,500 plus an $11,250 catch-up. Workers aged 50–59 and 64 and older get the standard catch-up to $32,500. Ages 64 with standard catch-up is not a typo: SECURE 2.0 created a specific window of enhanced catch-up for the 60–63 age band.

Many employers match employee 401(k) contributions up to a percentage of salary — commonly 50% of contributions up to 6% of pay, or 100% of contributions up to 3% of pay. This match represents an immediate 50–100% return on your contribution, far exceeding any investment return available at comparable risk.

Failing to contribute enough to capture the full employer match is the most common and most costly 401(k) mistake. An employee earning $80,000 with a 4% match who contributes only 2% leaves $1,600 per year on the table — $32,000 over 20 years, compounded to potentially $90,000+ at historical equity returns.

The sequencing recommendation: contribute to the 401(k) up to the full employer match before any other saving. Then fund an IRA. Then return to max the 401(k). This order captures the guaranteed return of the match before focusing on contribution room.

Contributing the maximum $24,500 annually at 7% average return for 20 years produces approximately $1.27 million. Over 30 years, the same contribution rate grows to approximately $2.6 million. These projections assume no employer match and no salary increases — realistic outcomes would typically be higher.

The tax advantage amplifies this further. A worker in the 22% bracket who maxes a Traditional 401(k) saves $5,390 in federal taxes in the current year compared to investing the same amount in a taxable brokerage account. That $5,390 stays invested rather than going to taxes, and compounds over decades.

Roth 401(k) options — available at many employers — flip the tax treatment: contributions are after-tax but withdrawals in retirement are completely tax-free. The same logic as Roth vs. Traditional IRA applies: Roth 401(k) is better if you expect higher taxes in retirement; Traditional 401(k) is better if you expect lower taxes in retirement.

Once you have fully contributed to the 401(k), the next priority is typically an IRA — either Roth or Traditional depending on income and tax situation. The IRA adds $7,500 in additional tax-advantaged space, with more investment flexibility than most 401(k) plans.

Beyond the 401(k) and IRA, an HSA (if you are enrolled in a high-deductible health plan) provides another $4,400 individual / $8,750 family in triple-tax-advantaged space. After these accounts are maxed, taxable brokerage accounts using index funds are a sound next step.

The order matters because each account type has different tax treatment, contribution limits, and withdrawal rules. A financial plan that sequences contributions through these accounts efficiently can produce meaningfully better after-tax wealth at retirement compared to one that fills accounts in arbitrary order.