401(k) Contribution Limits for 2026 and How the Employer Match Really Works
Last reviewed October 8, 2026. Limits come from the IRS announcement for 2026. We recalculated every example, and the sources are listed at the end.
An employer match is the closest thing to free money that ordinary payroll offers, and a surprising number of employees leave part of it unclaimed. This guide gives the 2026 contribution limits, explains how matching formulas work with an example, and shows what a match is worth over a career. You can model your own numbers in our retirement and 401(k) calculator.
The 2026 limits
According to the IRS announcement of cost-of-living adjustments for 2026:
| Limit | 2026 amount |
|---|---|
| Employee 401(k), 403(b) and most 457 deferrals | $24,500 (up from $23,500 in 2025) |
| Catch-up contribution, age 50 and over | $8,000 (up from $7,500) |
| Special catch-up, ages 60 to 63 | $11,250 (unchanged) |
| IRA contribution | $7,500 (up from $7,000) |
| IRA catch-up, age 50 and over | $1,100 (up from $1,000) |
So a worker aged 50 or older can defer up to $32,500 into a 401(k) in 2026 (24,500 plus 8,000), if the plan allows catch-ups. The limits apply to your own deferrals. Employer contributions are counted under a separate, higher overall limit for the plan.
Some plans do not allow the maximum, and the rules for catch-up contributions, including whether they must be Roth for higher earners, can be more complicated. Check your plan documents.
Traditional versus Roth
- Traditional 401(k): contributions are made before income tax, lowering your taxable income now. Withdrawals in retirement are taxed as income.
- Roth 401(k): contributions are made after tax, with no deduction now. Qualified withdrawals in retirement are tax-free.
Which is better depends mainly on whether you expect your tax rate in retirement to be higher or lower than now. Many people split between the two.
How an employer match works
A match is a promise by your employer to add money to your 401(k) when you contribute. Formulas vary, but a common one is "50% of your contributions up to 6% of pay".
Example: your salary is $85,000.
- 6% of pay = 85,000 × 0.06 = $5,100. That is the most of your contributions the employer will match.
- The employer adds 50% of that: $2,550.
- Your own $5,100 plus the match gives $7,650 going into the account in one year.
If you contribute only 3% ($2,550), the employer adds 50% of it, only $1,275. You would leave $1,275 of match unclaimed every year. Contributing at least up to the match limit is usually the first retirement priority.
Other formulas exist, such as dollar-for-dollar up to 3% of pay, or a flat contribution regardless of what you put in. Read your plan's summary to see which one applies.
Vesting
Matching contributions often vest over time. That means you may need to stay with the employer for a number of years before the match fully belongs to you. Your own contributions are always yours. If you leave before you are fully vested, you may forfeit part of the match.
What a match is worth over time
Using the example above, assume contributions of $7,650 a year (your $5,100 plus $2,550 match), an average return of 7% a year, and 30 years of saving. The 7% is an illustration, not a forecast.
- With the match: 7,650 × [(1.07^30 − 1) ÷ 0.07] ≈ $722,600
- Without the match (your $5,100 only): ≈ $481,800
The match alone is worth about $240,900 at the end, from $2,550 a year. Skipping it is one of the costliest mistakes in personal finance, and it is easy to fix.
If you max out the $24,500 limit for those 30 years at the same return, the balance would be about $2.3 million, which shows how much the amount you save, not just the match, shapes the outcome. Few people reach the limit, and you do not need to. The point is to see how far a consistent habit goes.
Tax effect of contributing
For a traditional 401(k), the contribution reduces taxable income. For someone at a 22% marginal rate, a $5,100 contribution reduces federal income tax by about $1,122. That means the actual reduction in take-home pay is smaller than the contribution, as we describe in how to read your paycheck.
IRAs: a second account
An IRA has its own, lower limit of $7,500 in 2026, plus a $1,100 catch-up for those 50 and over. You can contribute to both a 401(k) and an IRA, although the tax deductibility of traditional IRA contributions can be limited if you have a workplace plan and a higher income. Roth IRA eligibility also phases out at higher incomes.
Common mistakes
- Not contributing enough to get the full match. Check your formula and the percentage you need.
- Ignoring vesting. Know the schedule if you may change jobs.
- Leaving the account in cash. A default investment may be a conservative fund. Review it.
- Chasing the limit when you cannot afford it. Contribute what is sustainable. Missing the match costs much more than missing the maximum.
- Forgetting fees. Expense ratios affect results over decades.
- Cashing out when you change jobs. Withdrawals before retirement can be taxed and penalized. A rollover to the new plan or an IRA avoids that.
- Never increasing contributions. Raising your rate by 1% with each raise is painless.
Quick answers
Is the match counted toward the $24,500 limit? No. The employee limit counts only your own deferrals.
What if I am self-employed? Solo 401(k) and SEP IRA plans have different rules and higher overall limits.
Can I withdraw early? Often with taxes and a 10% additional tax if you are under 59 and a half, with exceptions. Do not treat a 401(k) as an emergency fund.
Should I pay off debt first? Many people take the match first, since it is an immediate return, then compare the interest rate on their debts with expected investment returns.
How we checked these numbers
We read the 2026 limits from the IRS announcement, then recalculated the match and growth examples with a script and tested them in our calculators. If a figure changes, tell us through the contact page.
This article is general information and an illustration of the arithmetic, not financial, tax or investment advice. Returns are not guaranteed. Consult a qualified professional about your situation.