Calculate how much you need to contribute each paycheck to max out your 401k. See 2026 limits by age including catch-up contributions.
Contribute 32.7% of each paycheck
To max out, you need $942.31 per paycheck. That's a significant commitment, but with your employer adding $135, your total savings reach $24,635.
1970 limits: $24,500 base + $8,000 catch-up (50+) or $11,250 super catch-up (60-63). Combined employee + employer limit: $72,000.
The IRS sets new 401k contribution limits each year, typically adjusting them for inflation. Understanding these limits is essential for maximizing your retirement savings.
The IRS defines different contribution limits based on your age group. Older workers get access to additional "catch-up" contributions to help them save more as they approach retirement.
| Age group | What you can contribute |
|---|---|
| Under 50 | Base limit only |
| 50-59 | Base limit + standard catch-up |
| 60-63 | Base limit + enhanced "super catch-up" |
| 64 and older | Base limit + standard catch-up |
The base employee contribution limit and catch-up amounts are updated by the IRS each year. Use the calculator above to see the exact current limits for your age group.
The SECURE 2.0 Act introduced an enhanced catch-up contribution for workers between ages 60 and 63. This "super catch-up" allows a larger additional contribution than the standard catch-up amount. The higher limit only applies during these four years — at 64, you return to the standard catch-up amount. This provision gives workers an extra boost during their peak earning years, right before retirement.
Maxing out your 401k means contributing the full amount the IRS allows each year. Here's how to calculate what you need to contribute each paycheck.
Use the calculator above to find your maximum contribution based on your age. If you'll reach a new age threshold (50, 60, or 64) during the calendar year, you can use the higher limit for the entire year.
If you've already contributed money this year, subtract that from your limit. For example, if your limit is $24,000 and you've already contributed $5,000, you have $19,000 remaining.
Count how many paychecks you have left in the year:
Divide your remaining contribution amount by your remaining paychecks to find your per-paycheck contribution target.
Sarah is 45 years old, earns $80,000 annually, and gets paid biweekly. She hasn't contributed anything yet this year, and the current base limit is $24,500.
Sarah needs to contribute 30.6% of each paycheck to max out her 401k.
Traditional 401k contributions reduce your taxable income. If you earn $80,000 and contribute $24,500, you only pay income taxes on $55,500. At a 22% marginal tax rate, that's over $5,000 in tax savings for the year.
The tax benefit is immediate — your paycheck withholding drops because your taxable wages are lower. Many people find that maxing out costs less than they expect once you factor in the tax savings.
Money in a 401k grows tax-deferred, meaning you don't pay taxes on dividends, interest, or capital gains each year. A $24,500 contribution growing at 7% annually becomes approximately:
The earlier you start maxing out, the more compound growth works in your favor. Even a few extra years of maximum contributions can make a significant difference at retirement.
Many employers match a portion of your contributions. A common match is 50% of your contributions up to 6% of salary. On an $80,000 salary:
That's free money you shouldn't leave on the table. Always contribute at least enough to get the full employer match before directing money elsewhere.
Once you turn 50, you can contribute extra money to your 401k beyond the base limit. This "catch-up" provision helps older workers boost their retirement savings during their higher-earning years.
Workers in this age range can contribute an additional amount beyond the base limit each year. The IRS adjusts this catch-up amount periodically. This extra contribution can add up to hundreds of thousands of dollars over a decade of saving.
Workers between 60 and 63 qualify for the enhanced super catch-up, which allows a larger additional contribution than the standard catch-up. This higher limit only applies during these four years. At 64, you return to the standard catch-up amount.
Many people reach their peak earning years in their early 60s. The super catch-up lets you accelerate retirement savings before you stop working. If you can afford it, take advantage of this limited window — it's only available for four years of your career.
Many plans offer both traditional and Roth 401k options. Both count toward the same annual contribution limit.
Under the SECURE 2.0 Act, employees who earned above the IRS income threshold in the prior year must make their catch-up contributions to a Roth account. This applies to catch-up contributions only — the base contribution can still be traditional. Check the current income threshold, as the IRS may adjust it over time.
If you're early in your career with a lower income, Roth contributions often make sense because you're paying taxes at a low rate now and avoiding higher taxes later. If you're in your peak earning years, traditional contributions give you the biggest immediate tax break. Many financial advisors recommend having a mix of both for tax diversification in retirement.
Employer matches are separate from your employee contribution limit. The IRS sets a combined annual limit that includes your contributions, employer contributions, and any after-tax contributions. Most people won't hit this combined limit unless they have very generous employer matches.
Dollar-for-dollar up to 3%
50 cents per dollar up to 6%
Tiered matching
Always check your plan documents to understand your specific match formula. Some employers also offer profit-sharing contributions that don't depend on your own contributions at all.
Employer matching contributions often come with a vesting schedule. This means you don't fully own the employer match until you've worked at the company for a certain number of years. Common vesting schedules include:
If you're considering a job change, check your vesting schedule. Leaving before you're fully vested means forfeiting some of your employer match.
If you set your contribution rate high enough to max out by year-end, you spread contributions evenly. But some plans stop matching once you hit the employee limit. Check if your plan has a "true up" provision that corrects this by making a lump-sum match after year-end.
Some people prefer to max out early in the year. This gets your money invested sooner, giving it more time to grow. However, you might miss employer match dollars in months where you aren't contributing, if your plan doesn't true up.
If maxing out feels impossible, increase your contribution by 1% each year. You'll barely notice the smaller paycheck, and you'll steadily work toward the maximum. At a $75,000 salary, a 1% increase is only about $29 less per paycheck (before tax savings).
When you get a raise or bonus, direct the extra money to your 401k before you adjust your lifestyle. You won't miss money you never saw in your regular paycheck. Some plans let you set a separate, higher contribution rate for bonus pay.
Many 401k plans offer an auto-escalation feature that automatically increases your contribution rate by 1% each year. Sign up for this if available — it removes the willpower factor and steadily moves you toward maxing out.
Not everyone can afford to max out their 401k. Here's a priority list for allocating your savings:
Any 401k contribution is better than none. Even $100 per paycheck adds up to $2,600 per year, and with employer match and compound growth, that becomes a meaningful retirement fund over decades.
The 401k and IRA (Individual Retirement Account) have separate contribution limits. You can contribute to both in the same year. The 401k has a much higher contribution limit, but IRAs offer more investment options since you choose your own brokerage. High earners may face limits on deducting traditional IRA contributions if they also have a 401k.
A 403b plan works similarly to a 401k but is offered by nonprofits, schools, and government organizations. The contribution limits are generally the same. Some long-tenured 403b participants may qualify for an additional catch-up contribution on top of the standard age-based catch-up.
Some 401k plans allow after-tax contributions beyond the pre-tax and Roth limits, up to the combined annual limit. If your plan also allows in-plan Roth conversions, you can convert these after-tax contributions to Roth — a strategy known as the "mega backdoor Roth." This can significantly increase the amount of money you grow tax-free. Not all plans support this, so check with your plan administrator.
Getting the full match is a great first step, but it shouldn't be your final goal. The match is usually 3-6% of salary — far below the 15% savings rate most financial planners recommend for a comfortable retirement.
As your salary grows, your 401k contribution should too. Many plans offer automatic escalation — sign up if available. Without it, your savings rate actually decreases relative to your income as you get raises.
If you have 401ks from previous employers, don't forget about them. Old accounts may have higher fees or limited investment options. Consider rolling them into your current employer's plan or into an IRA for more control and potentially lower costs.
If you over-contribute, you'll face tax penalties. Monitor your contributions carefully if you change jobs mid-year, since each employer tracks contributions independently. The contribution limit is per person per year across all 401k accounts.
Maxing out contributions is only half the equation. Make sure your money is invested appropriately for your age and risk tolerance. A common guideline is to subtract your age from 110 to determine the percentage you should hold in stocks, with the rest in bonds.
No. The annual employee contribution limit is for your contributions only. Employer matches are separate and count toward the higher combined annual limit set by the IRS.
You must withdraw the excess before your tax filing deadline. Otherwise, you'll pay taxes twice — once when you contribute and again when you withdraw. Your plan administrator can help process an excess contribution correction.
Yes. The 401k limit and IRA limit are completely separate. You can max out both in the same year. However, high earners who have a 401k may face limits on deducting traditional IRA contributions.
Your contribution limit is per person, not per employer. Track your total contributions across both jobs to avoid going over. Your new employer's payroll system won't know what you contributed at your old job.
Some plans allow after-tax contributions beyond the pre-tax/Roth limit. These count toward the combined annual limit but not the employee contribution limit.
You can make catch-up contributions starting January 1 of the year you turn 50. You don't have to wait until your actual birthday.
A true-up is a year-end adjustment some employers make to ensure you receive the full match you're entitled to. Without a true-up, front-loading contributions can cause you to miss out on matching in later months when you've already hit the limit.
Maxing out your 401k is one piece of retirement planning. Consider the full picture:
Social Security — Check your estimated benefits at ssa.gov. For most people, Social Security replaces about 40% of pre-retirement income.
Other savings — IRAs, taxable brokerage accounts, real estate, and other investments supplement your 401k.
Healthcare costs — Medicare doesn't cover everything. The average retired couple may need significant savings for out-of-pocket healthcare expenses.
Spending needs — A common rule of thumb is that you'll need about 80% of your pre-retirement income in retirement, though this varies widely based on lifestyle.
A widely cited guideline is to save at least 15% of your gross income for retirement, including any employer match. If your employer matches 3% and you contribute 12%, you hit this target while building toward maxing out your 401k.
The best contribution rate is the highest one you can maintain consistently. Start where you are, increase when you can, and let compound growth do the heavy lifting.