The 401(k) limit includes both your contributions and your employer's match

The annual contribution limit set by the IRS covers money going into your 401(k) from all sources — your paycheck deferrals and your employer's matching contributions combined. For 2024, that total limit is $23,500 if you are under 50, or $31,000 if you are 50 or older (the extra $7,500 is called a catch-up contribution). Your employer's match counts toward this same ceiling, which means the more your employer contributes, the less room you have to contribute from your own pay.

This matters because many people assume they can defer the full $23,500 from their salary and then receive a full employer match on top of it. That is not how it works. If your employer matches 50% of your contributions up to 6% of your salary, and you earn $100,000 per year, your employer will add $3,000 to your account. That $3,000 is part of your $23,500 limit, not extra.

Key Takeaways

  • The IRS limit of $23,500 (or $31,000 at age 50+) includes your salary deferrals and your employer's match combined in the same year.
  • If you contribute the maximum from your paycheck, your employer's match may be reduced or capped because the total cannot exceed the annual limit.
  • Most employees never hit the limit because typical employer matches are small relative to the ceiling, but high earners with generous matches can run into this problem.
  • Your plan documents spell out whether your employer will stop matching once the limit is reached, or whether they will reduce your deferrals to stay under the cap.

When the limit actually affects you

For most workers, this limit is theoretical. If you contribute 6% of your salary and your employer matches 3%, you are putting in roughly $6,000 to $9,000 per year depending on your income — well below the $23,500 ceiling. You will never bump into it.

The limit becomes real if you are a high earner, your employer offers a generous match, or both. A person earning $200,000 per year who contributes 15% of salary ($30,000) will exceed the limit when ready. If their employer also matches, the combined total will be capped at $23,500, meaning the plan administrator will stop accepting their contributions partway through the year. Similarly, someone at a company with a 100% match on the first 6% of salary will hit the limit faster than someone at a company with a 50% match.

Your plan's summary document (called the Summary Plan Description, or SPD) should explain what happens when the limit is reached. Some plans stop accepting your deferrals. Others reduce the match. A few allow deferrals to continue but do not match beyond the limit. Ask your plan administrator or HR department which rule applies to your plan.

How to know if you are close to the limit

Your pay stub and your plan's online portal both show year-to-date contributions. Add your contributions so far this year to your employer's match so far this year. If that total is within a few thousand dollars of $23,500, you are approaching the limit.

If you are maxing out your own contributions (putting in $23,500 from your paycheck alone), you have already hit the limit and your employer cannot add a match. This is rare but happens to high earners. In this case, you have three options: reduce your deferrals to leave room for the match, ask your employer whether they offer a Roth 401(k) or a 403(b) plan (which have separate limits in some cases), or put additional savings into an IRA or taxable brokerage account.

The difference between the limit and the match

The IRS limit ($23,500 in 2024) is a hard ceiling. No plan can accept more than this per person per year, regardless of how much you earn or how generous your employer is. This is different from the match itself, which has no IRS limit — your employer can match as much as they want, as long as the total (your contribution plus theirs) does not exceed the annual ceiling.

There is also a separate limit on what your employer can contribute in total across all sources. The IRS allows total contributions to your account (yours plus employer's plus any profit sharing) to reach up to $69,000 in 2024 (or $76,500 if you are 50+). This is called the annual additions limit. Most plans do not come close to this, but it is another ceiling to be aware of if you have multiple employers or if your company offers profit sharing.

What happens if you exceed the limit

If your plan allows contributions to exceed the limit by mistake, the excess is usually corrected by the plan administrator. They will either return the overage to you as a taxable distribution, or they will carry it forward to the next year if your plan allows it. Either way, you may owe taxes on the excess and possibly a 6% excise tax if it is not corrected in time.

This is why most plans have safeguards built in. They track contributions throughout the year and stop accepting deferrals once the limit is reached. If you work for multiple employers in the same year, you are responsible for making sure your combined deferrals do not exceed the limit across all plans. The IRS will not automatically catch this, and you may have to file an amended return to correct it.

Planning around the limit if you are a high earner

If you know you will hit the limit before year-end, you have a few moves. First, spread your contributions evenly across all paychecks so you do not max out too early and miss out on employer matches later in the year. Second, check whether your plan offers a Roth 401(k) option — contributions to a Roth 401(k) count toward the same $23,500 limit, but you can split your deferrals between the traditional and Roth side if your plan allows it. Third, look into whether your employer offers a non-may have access to deferred compensation plan (NQDC) or a 403(b) if you work for a nonprofit or school — these have different rules and may offer additional savings room.

If none of these options work, a backdoor Roth IRA or a mega backdoor Roth (if your plan allows it) can be another way to save beyond the 401(k) limit. These strategies are more complex and may require professional guidance, but they can make sense for high earners who want to save more than the standard limit allows.

Frequently Asked Questions

Can my employer match more than I contribute?

Yes, your employer can match more than your contribution amount, but the combined total still cannot exceed $23,500 per year. For example, if you contribute $10,000 and your employer matches 100%, they can add $10,000, for a total of $20,000 — still under the limit. If you contribute $15,000 and they match 100%, they can only add $8,500 to stay at the $23,500 cap.

If I change jobs mid-year, do the limits reset?

No. The $23,500 limit applies to you as an individual across all 401(k) plans in the same calendar year. If you contributed $12,000 to your old employer's plan and then $15,000 to your new employer's plan, your total is $27,000, which exceeds the limit. You will need to contact one of the plans to have the excess returned to you.

Does my employer's match count as income I have to report?

Your employer's match is not taxable income in the year it is contributed to your 401(k). It goes into your account pre-tax (or post-tax if it is a Roth match) and is only taxed when you withdraw it in retirement. However, it does count toward the annual contribution limit.

What if my employer stops matching partway through the year?

If your employer suspends or ends the match, your deferrals can usually continue up to the $23,500 limit. Check with your HR department to confirm whether the match is temporarily paused or permanently ended, and whether you should adjust your paycheck deferrals for the rest of the year.

Can I contribute more if my employer does not offer a match?

No. The $23,500 limit applies whether your employer matches or not. However, if your employer does not match, you have more flexibility to use other savings vehicles like a traditional or Roth IRA, which have their own separate limits and may offer tax advantages depending on your income.