The 401(k) is the most common retirement savings vehicle in America, used by over 70 million workers. Understanding the contribution limits and rules helps you maximize your tax advantages and retirement savings.
2026 401(k) Contribution Limits
| Limit Type | 2026 Amount |
|---|---|
| Employee contribution limit (under 50) | $24,500 |
| Catch-up contribution (age 50–59 and 64+) | +$8,000 → total $32,500 |
| Super catch-up (ages 60–63, SECURE 2.0) | +$11,250 → total $35,750 |
| Total employer + employee (under 50) | $72,000 |
| Total employer + employee (age 50-59/64+) | $80,000 |
| Total employer + employee (ages 60–63) | $83,250 |
| Compensation limit (for calculating employer match, section 401(a)(17)) | $360,000 |
Historical 401(k) Limits
| Year | Employee Limit | Catch-Up | Total (50+) |
|---|---|---|---|
| 2020 | $19,500 | $6,500 | $26,000 |
| 2021 | $19,500 | $6,500 | $26,000 |
| 2022 | $20,500 | $6,500 | $27,000 |
| 2023 | $22,500 | $7,500 | $30,000 |
| 2024 | $23,000 | $7,500 | $30,500 |
| 2025 | $23,500 | $7,500 | $31,000 |
| 2026 | $24,500 | $8,000 | $32,500 |
How Much Does Maxing Out Save You?
The tax savings from maxing out your 401(k) are substantial:
| Tax Bracket | Annual Tax Savings (max $24,500) | Tax Savings (50+, max $32,500) |
|---|---|---|
| 12% | $2,940 | $3,900 |
| 22% | $5,390 | $7,150 |
| 24% | $5,880 | $7,800 |
| 32% | $7,840 | $10,400 |
| 35% | $8,575 | $11,375 |
If you’re in the 24% bracket, maxing out your 401(k) saves you $5,880 per year in federal income taxes.
The Power of the Employer Match
Many employers match a portion of your contributions. Common match formulas:
| Match Type | Your Contribution | Employer Adds | Total Annual Savings |
|---|---|---|---|
| 100% up to 3% | 3% of salary | 3% of salary | 6% of salary |
| 50% up to 6% | 6% of salary | 3% of salary | 9% of salary |
| 100% up to 6% | 6% of salary | 6% of salary | 12% of salary |
Always contribute at least enough to get your full employer match. Not doing so is like declining a pay raise.
Example: $80,000 Salary, 50% Match Up to 6%
- You contribute 6% = $4,800/year
- Employer matches 50% = $2,400/year
- Total: $7,200/year
- Employer match = 100% instant return on the matched portion
Traditional 401(k) vs. Roth 401(k)
Many employers now offer both options:
| Feature | Traditional 401(k) | Roth 401(k) |
|---|---|---|
| Contributions | Pre-tax (reduces taxable income) | After-tax (no immediate tax benefit) |
| Withdrawals | Taxed as ordinary income | Tax-free (after age 59½) |
| RMDs required? | Yes, starting at age 73 (rising to 75 by 2033) | No (SECURE 2.0 eliminated Roth 401(k) RMDs starting 2024) |
| Best if | Your tax rate will be lower in retirement | Your tax rate will be higher in retirement |
General guidance:
- Early career (lower income): Roth 401(k) — you’re in a low bracket now, and decades of tax-free growth is powerful
- Peak earning years: Traditional 401(k) — the immediate tax deduction is more valuable when you’re in a higher bracket
- Uncertain: Split contributions between both for tax diversification
401(k) Withdrawal Rules
| Situation | Penalty | Taxes |
|---|---|---|
| Before age 59½ | 10% early withdrawal penalty | Yes (traditional) |
| Age 59½+ | No penalty | Yes (traditional), No (Roth) |
| Rule of 55 (leave job at 55+) | No penalty from that employer’s plan | Yes (traditional) |
| Hardship withdrawal | 10% penalty (some exceptions) | Yes |
| 401(k) loan | No penalty (if repaid) | No (if repaid on time) |
Required Minimum Distributions (RMDs)
Starting at age 73 (rising to 75 by 2033 under SECURE 2.0, for those born 1960 or later), you must begin taking required minimum distributions from traditional 401(k) accounts. Roth 401(k) accounts no longer have RMDs, effective 2024 under SECURE 2.0.
401(k) Investment Strategy
| Age Range | Suggested Stock/Bond Allocation |
|---|---|
| 20s–30s | 90/10 to 80/20 |
| 40s | 80/20 to 70/30 |
| 50s | 70/30 to 60/40 |
| 60s | 60/40 to 50/50 |
Target-date funds automatically adjust this allocation as you approach retirement and are the most popular choice in 401(k) plans.
401(k) Fees Matter
The average 401(k) expense ratio is about 0.50%, but some plans charge over 1%. Over a career, this difference is enormous:
| Fee Level | Balance After 35 Years ($500/month, 7% return) |
|---|---|
| 0.10% (low-cost index) | $868,000 |
| 0.50% (average) | $798,000 |
| 1.00% (expensive) | $718,000 |
| 1.50% (high-cost) | $645,000 |
The difference between a 0.10% and 1.00% fee is $150,000 over a career. Check your plan’s expense ratios and advocate for lower-cost index fund options if available.
What Happens to Your 401(k) When You Leave a Job
| Option | Pros | Cons |
|---|---|---|
| Leave it in old plan | No effort needed | Can’t contribute; may have higher fees |
| Roll to new employer’s 401(k) | Consolidation; may have better funds | Limited to new plan’s options |
| Roll to an IRA | Most investment choices; often lowest fees | Can’t use Rule of 55 |
| Cash out | Immediate cash | 10% penalty + taxes; destroys retirement savings |
Rolling to an IRA is usually the best option for most people, providing the widest investment selection and often the lowest fees. Never cash out — the penalties and lost compound growth are devastating.
See also: catch-up contributions explained, average 401(k) balance by age, and Roth vs. Traditional 401(k). Return to the 401(k) Complete Guide for the full picture.
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