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Though a 401(k) plan can be one of the easiest and most effective ways to save for your retirement, there’s a limit on how much you may contribute.
Each fall, the Internal Revenue Service (IRS) reviews and sometimes adjusts the contribution limits for 401(k) plans, individual retirement accounts (IRAs), and other retirement savings vehicles.
Key Takeaways
- Employees can contribute up to $23,500 to their 401(k) plan for 2025 vs. $23,000 for 2024.
- Anyone age 50 or over is eligible for an additional catch-up contribution of $7,500 for both 2024 and 2025.
- The limit on total employer and employee contributions for 2025 is $70,000 ($77,500 with catch-up).
- The limit on total employer and employee contributions for 2024 was $69,000 ($76,500 with catch-up).
Basic Limits
The basic employee contribution limit for 2025 is $23,500 ($23,000 for 2024). This limit includes all elective employee salary deferrals and any contributions made to a designated Roth account within your 401(k) or to a Roth 401(k) plan.
If you are over age 50, the catch-up contribution remains the same as for 2024, at $7,500. That’s a total of $31,000 (vs. $30,500 in 2024.) If you are age 60, 61, 62, or 63, you can contribute $11,250 instead of $7,500.
The same contribution limits apply to 403(b) plans and most 457 plans, as well as to the federal government’s Thrift Savings Plan.
If you have multiple 401(k) accounts, your total contributions to all of them—both traditional and Roth—cannot exceed that $23,500 limit. Any contributions you make to other types of retirement accounts, such as IRAs (except for SIMPLE IRAs), do not affect your 401(k) contribution limit.
After-Tax Contributions
If you have extra funds to sock away and your company offers an after-tax 401(k) contribution option, you can contribute more. In 2025, the total combined limit, including elective employee deferrals, after-tax contributions, and employer matching funds, is $70,000 ($77,500 if you’re 50 or older, or $81,250 if you’re 60, 61, 62, or 63). In 2024, the limit was $69,000 ($76,500 for those 50 or older).
To help workers nearing retirement add more to their tax-advantaged savings accounts, the IRS allows 401(k) participants age 50 and over to make additional contributions beyond the standard contribution limit.
Employer Contributions
Another big benefit of participating in a 401(k) plan is that your employer may contribute to it on your behalf. Many employers match employee contributions by adding, for example, 50 cents or one dollar for every dollar the employee contributes.
Employers can also make elective contributions regardless of how much or little the employee contributes, up to certain limits. The limit on total employer and employee contributions for 2025 is $70,000. When you include the $7,500 catch-up contribution, that limit becomes $77,500. Or if you’re 60, 61, 62, or 63, the limit is $81,250.
The limit on total employer and employee contributions for 2024 was $69,000 or 100% of employee compensation, whichever was less. For workers age 50 and up, the base limit was $76,500, which included the $7,500 catch-up contribution.
Limits for Highly Paid Employees
If you earn a high salary, you may be considered a highly compensated employee (HCE), subject to more stringent contribution limits. To prevent wealthier employees from benefiting unfairly from the tax benefits of 401(k) plans, the IRS uses the actual deferral percentage (ADP) test to ensure that employees of all compensation levels participate proportionately in their companies’ plans.
If non-highly compensated employees do not participate in the company plan, the amount that HCEs can contribute may be restricted.
Contributions in Excess of Annual Limits
Evaluating your estimated contributions for the year ahead and analyzing your contributions at the end of a calendar year can be very important. If you find that you have made contributions in excess of the annual limits, the IRS requires that these excess deferrals be returned to you by April 15.
Comparing 2024 and 2025 Limits
The chart below provides a breakdown of how the rules and limits for defined-contribution plans (401(k), 403(b), and most 457 plans) changed for 2024 vs. 2025.
| Defined Contribution Plan Limits | 2024 | 2025 | Change |
|---|---|---|---|
| Maximum employee elective deferral | $23,000 | $23,500 | +$500 |
| Employee catch-up contribution (if age 50 or older by year-end)* | $7,500 | $7,500 | +$0 |
| Defined contribution limit, all sources | $69,000 | $70,000 | +$1,000 |
| Defined contribution limit if age 50 or older by year-end, including catch-up | $76,500 | $77,500 | +$1,000 |
| Employee compensation limit for calculating contributions | $345,000 | $350,000 | +$5,000 |
| Key employees’ compensation threshold for nondiscrimination testing | $220,000 | $230,000 | +$10,000 |
| Highly compensated employees’ threshold for nondiscrimination testing | $155,000 | $160,000 | +$5,000 |
* The catch-up contribution limit for participants age 50 and older is available to those turning 50 at any time during the year. For instance, if you were born on New Year’s Eve, it applies.
How Often Does the IRS Change 401(k) Contribution Limits?
The IRS typically makes an annual adjustment to contribution limits to reflect the effects of inflation.
How Much More Can I Contribute to My 401(k) for 2025 Compared to 2024?
For the tax year 2025, the maximum amount that an employee under 50 can contribute to their 401(k) retirement plan is $23,500. That is $500 more than you were allowed to contribute in 2024.
Has the IRS Increased Catch-Up Amounts for 2025?
No. The catch-up amount for those 50 years old and older remains at $7,500 for the tax year 2025, the same as it was in 2024.
The Bottom Line
Every year, the IRS issues updates for the maximum amount of money employees may contribute to their 401(k) plans.
For 2025, that amount is $23,500, with a catch-up contribution of $7,500 for those age 50 and older. If you’re 60, 61, 62, or 63, you can contribute an additional $11,250 instead of $7,500. For 2024, the maximum contribution amounts were $23,000 and $7,500 for catch-up contributions.
Make the most of your yearly opportunity to save toward retirement by maxing out your contribution amounts, if possible. Moreover, be sure to take advantage of employer-matching contributions, if they’re offered, to boost your retirement savings each year.