Interactive tool · Free · Updated for 2026

401(k) Calculator

Project your 401(k) balance at retirement — with employer match, salary growth, and the 4% rule income estimate.

A complete 401(k) projection: your contributions + employer match + tax-deferred growth, with 2026 contribution limits and catch-up math built in. See exactly what your retirement balance and annual income will be.

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4.9 / 5 · 3,140 ratingsUsed by 67,200+ workers planning retirement2026 limits + employer match + Roth toggle
2026 limits
cap: $23.5K
Contribution type
Year 1 your contribution
$9.5K
10% of salary
Year 1 employer match
$2.9K
50% up to 6%
Final balance
$2.09M
year 30
Annual retirement income
$83.7K
@ 4% rule
Key
Final 401(k) balance
$2.09M
30 years from now
Key
Annual income @ 4%
$83.7K
sustainable withdrawal
Total contributions
$452.0K
your money
Free employer money
$135.6K
over all years
401(k) growth
Balance vs total contributions over time
Year-by-year

Balance at each milestone.

Year
Balance
Your $
Match $
Year 1
$66.7K
$9.5K
$2.9K
Year 5
$150.5K
$50.4K
$15.1K
Year 10
$304.3K
$108.9K
$32.7K
Year 15
$534.7K
$176.7K
$53.0K
Year 20
$875.2K
$255.3K
$76.6K
Year 25
$1.37M
$346.4K
$103.9K
Year 30
$2.09M
$452.0K
$135.6K
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lazysmirk401k-calculator
My 401(k) plan
$2.09M at retirement
$83.7K/yr at 4% rule · $135.6K free match.
Contribute
10%
Match
50% to 6%
Years
30
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Quick Answers

401(k), in 30 seconds.

Direct answers to the most common questions, in plain language. Skim if you're in a hurry; dig deeper below.

What's the 2026 401(k) contribution limit?

Answer

$23,500 employee + $7,500 catch-up (50+).

The 2026 employee deferral limit is $23,500 (a small bump from 2025). The catch-up contribution for age 50+ is $7,500. New super-catch-up for ages 60–63 adds another ~$3,750 in 2026.

Should I contribute enough to get the full employer match?

Answer

Yes — always, before any other investing.

The employer match is a 50–100% instant return. A 50% match up to 6% of pay means contributing 6% gets you another 3% — a guaranteed 50% return on those dollars. Always max the match before any other investing.

Traditional vs Roth 401(k) — which should I pick?

Answer

Traditional if higher marginal rate now; Roth if lower now or younger.

Traditional: deduct contributions now, pay tax later. Best if your tax rate is higher today than it will be in retirement. Roth: no deduction now, tax-free withdrawals later. Best if you're younger, in a lower bracket, or expect higher taxes in retirement.

When can I take money out of a 401(k)?

Answer

Age 59½ without penalty; earlier with strict exceptions.

Standard rule: withdrawals after age 59½ are penalty-free (still taxed as ordinary income for traditional). Earlier withdrawals carry a 10% penalty plus tax, with exceptions for hardship, disability, or the rule of 55 (separating from employer at 55+).

How it works

How 401(k) works.

The mechanics in short answers — no jargon, no upsell.

01

You contribute a percentage of your pay.

Most 401(k)s let you elect a percentage (3–15%+) of each paycheck. Pre-tax (traditional) reduces your taxable income now; Roth contributions are after-tax.

02

Employer often matches up to a limit.

Typical match: "50% up to 6%" means employer adds 50¢ for every $1 you contribute, up to 6% of your pay. Maxing the match is universally the right move.

03

Money grows tax-deferred (or tax-free in Roth).

No annual tax drag — full compounding for decades. Traditional gets taxed at withdrawal; Roth withdrawals are tax-free.

04

Withdrawals start at 59½ (or 55 in some cases).

After 59½, no early-withdrawal penalty. Required Minimum Distributions begin at age 73 for traditional 401(k); Roth has no RMD during the original owner's lifetime.

How to use

Four steps. About 20 seconds.

Designed so anyone can model their situation in under a minute, with or without a finance background.

  1. Step 1
    Enter salary + contribution %
    Annual salary and the % you contribute (or want to contribute).
  2. Step 2
    Add employer match
    Your match formula — "50% up to 6%" or similar.
  3. Step 3
    Set years to retirement
    Current age + retirement age = years of compounding.
  4. Step 4
    See projected balance
    Balance at retirement + annual income at the 4% rule.
Benefits

Why this matters.

See balance at retirement

Project years of contributions + employer match + growth.

Employer match included

Model your specific match structure — 50%/100%, up to X% of pay.

Traditional vs Roth toggle

See after-tax retirement income under each — same contribution, different math.

Annual salary growth

Model raises — your contributions grow as your salary does.

Compound growth visualization

See where the gains come from year by year.

Retirement income estimate

Apply the 4% rule — see what your balance generates per year in retirement.

FAQ

401(k), answered.

Everything you might ask before, during, or after using this tool.

Written for borrowers, not bankersPlain-language, jargon-freeReviewed quarterly
What if my employer doesn't offer a 401(k)?

Open a traditional or Roth IRA instead ($7,000 2026 limit, $8,000 with catch-up). Self-employed? Consider a SEP-IRA or Solo 401(k) for higher limits. Most workers should max IRA before increasing 401(k) above the match anyway.

How does the employer match vesting schedule work?

Many employers vest their match over 3–6 years. If you leave before fully vested, you forfeit the unvested portion. Your own contributions are always 100% vested immediately.

Can I contribute to both Roth and traditional 401(k)?

Yes, if your plan offers both. The combined total can't exceed the $23,500 employee limit ($31,000 with 50+ catch-up). Splitting can be a strategic hedge against unknown future tax rates.

What's the rule of 55?

If you leave your employer in the calendar year you turn 55 or later, you can take penalty-free distributions from that employer's 401(k) (still taxed). Doesn't apply to IRAs or to plans from earlier jobs. Useful for early retirees.

Should I take a 401(k) loan?

Generally avoid. You can borrow up to 50% / $50k, but if you leave the job, the loan often becomes due in 60 days. Defaults create a taxable distribution + 10% penalty. Acceptable only for short-term, deeply-thought-through needs.

What's a "mega backdoor Roth"?

If your 401(k) allows after-tax (non-Roth) contributions AND in-service conversions, you can contribute up to ~$46k extra in after-tax dollars and convert to Roth — totaling ~$70k of Roth contributions per year. Powerful but plan-dependent.

How does 401(k) compare to IRA?

Higher contribution limits ($23,500 vs $7,000), payroll-deducted convenience, possible employer match — all favor 401(k). IRA has more investment choices, lower fees often, and no employer restrictions. Most use both.

Should I roll over my 401(k) when I change jobs?

Usually yes — to an IRA for more control + lower fees, OR to your new employer's 401(k) if it has good options. Cashing out triggers tax + penalty + lost compounding — almost always the wrong move.

The three streams of 401(k) money

Employee contribution: what you defer from your paycheck — capped at $23,500 in 2026, +$7,500 catch-up for 50+.

Employer match: free money on your contributions — often 50% or 100% up to some percentage of salary.

Investment growth: tax-deferred compounding inside the account — historically averaging 7% real for diversified equity portfolios.

All three matter, but the employer match is by far the highest-leverage dollar. Skipping the match leaves a 50–100% instant return on the table.

Traditional vs Roth — the real decision framework

Traditional: contribution is pre-tax (lowers taxable income now); withdrawal is taxed as ordinary income later.

Roth: contribution is after-tax (no deduction); withdrawal is tax-free in retirement.

Simple rule: traditional if your marginal rate is HIGHER today than you expect in retirement. Roth if your marginal rate is LOWER today.

Most early-career professionals (lower bracket now, expected higher bracket later) should default to Roth. Most peak-earnings professionals (high bracket now, expecting retirement to be lower) should default to traditional.

Splitting 50/50 is a reasonable hedge if you're unsure.

Why 401(k) fees matter so much

A 1% annual fee compounded over 30 years can reduce your final balance by 25–30%. That's decades of savings lost to friction.

Look up the fund expense ratios in your plan. Anything above 0.5% is questionable; above 1% is bad. Target index funds typically run 0.03–0.10%.

If your plan has bad options: contribute to the match, then max IRA, then return to the 401(k) for any remaining capacity.

The optimal 401(k) priority order

1. Contribute enough to get the FULL employer match. Always first.

2. Pay off high-interest debt (credit cards, personal loans).

3. Build emergency fund (3–6 months expenses).

4. Max your IRA ($7k Roth or traditional).

5. Return to 401(k) and increase contributions toward the $23,500 limit.

6. After that: HSA, 529, taxable brokerage.

Tweak based on tax situation and goals, but this is the right default for most US workers.

Common 401(k) mistakes

  • Not contributing enough to get the full employer match.
  • Picking high-fee actively managed funds over index funds.
  • Cashing out 401(k) when changing jobs.
  • Forgetting old 401(k)s at previous employers.
  • Taking 401(k) loans without weighing the job-loss risk.
Trust & transparency

How this tool behaves, and what it isn't.

Two short notes worth reading before you trust any number on this page.

Privacy

Calculations run locally in your browser.

Your loan amount, rate, and prepayment inputs never leave your device. No accounts, no cookies on your numbers, no analytics on the values you type. Disconnect from the internet and it still works.

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  • No data stored or sent
  • Works offline
  • No third-party trackers
Disclaimer

Lazysmirk is a tools platform, not a financial institution.

We are not a bank, NBFC, advisor, broker, or distributor of any financial product. The numbers shown here are estimates for educational purposes only, based on the inputs you provide.

Results are not financial, legal, or tax advice. Please consult a qualified professional before any decision about your loan, investments, or personal finances. Actual loan terms and charges depend on your bank and individual circumstances.