💼 Retirement · Tax-Deferred · 2026 Limits

401k Calculator 2026

Employer match optimizer · Roth vs Traditional comparison · Tax-deferred growth chart · 2026 limits ($24,500/$32,500)

💰 Match optimizer ⚖️ Roth vs Traditional 📊 Growth chart 🔗 Shareable
Final 401k Balance
$0
at retirement
Employer Match
$0
free money/year
Tax Savings
$0
vs. taxable account
Total Contributed
$0
you + employer
$
% of salary10%
1%15%30%
✅ Within 2026 limit ($24,500 / $32,500 age 50+)
%
e.g. 50 = 50¢/dollar
%
e.g. 6 = up to 6%
catch-up eligible at 50+
💰 Free Money Alert
expected annual return7.00%
2%7%12%15%
$
%
%
Results
Final Balance
at retirement
Employer Match/yr
free money
You Contribute/yr
% of salary
Lifetime Match
employer total
Tax Savings (Trad.)
vs. no 401k
Roth After-Tax Value
tax-free at retirement
Roth vs Traditional Comparison
📊 401k Growth — Your Money vs. Employer Match vs. Growth
Total Balance Your Contributions Employer Match
Hover for year details · Purple line = total balance
Year-by-Year 401k Growth
AgeBalanceYour Contrib.MatchGrowth
Projections assume constant return and salary. Actual returns vary. Tax comparisons are estimates. Consult a financial advisor for personalized guidance. Not financial advice.

401k Calculator Guide — Limits, Match, Roth vs Traditional (2026)

A 401k is the most powerful retirement tool available to most American workers — combining tax advantages, employer free money, and compound growth over decades. Understanding how to optimize it can add hundreds of thousands of dollars to your retirement balance.

📋 2026 401k Limits & Key Numbers
Employee contribution limit (under 50)$24,500
Catch-up contribution (age 50+)+$8,000 = $32,500
Super catch-up (age 60–63, SECURE 2.0)+$11,250
Total combined limit (emp + employer)$72,000
Common match structure50% up to 6% of salary
Penalty-free withdrawal age59½

Never Leave Free Money on the Table

The employer match is the single best return available to any investor — an immediate 50–100% return on your contribution, before any market growth. If your employer matches 50% of contributions up to 6% of salary, and you earn $80,000: contributing $4,800 gets you an instant $2,400 match. That's a guaranteed 50% return in year one. The absolute minimum priority: always contribute enough to capture 100% of the employer match.

Traditional vs Roth 401k

Traditional 401k: contributions reduce your taxable income now, but withdrawals in retirement are taxed as ordinary income. Best if you're in a high bracket today and expect lower income in retirement. Roth 401k: contributions are after-tax, but all growth and withdrawals are completely tax-free. Best if you're in a lower bracket now or expect high income in retirement. When in doubt, Roth wins for young, early-career workers — the decades of tax-free compound growth are enormous.

What is the 401k limit for 2026?+
For 2026: $24,500 for employees under 50. Ages 50+: add $8,000 catch-up = $32,500 total. Ages 60–63 (SECURE 2.0 super catch-up): $11,250 catch-up instead = $35,750. Total combined limit including employer match: $72,000. These limits typically increase with inflation each year — the 2025 limit was $23,500.
Should I choose Roth or Traditional 401k?+
Choose Roth if: you're under 40, your income is below $75K (single) or $150K (married), you expect higher income later, or you want tax flexibility in retirement. Choose Traditional if: you're in the 32%+ bracket, expect significantly lower income in retirement, or your state has high income taxes. You can also split contributions between both types if your plan allows.
How does the employer match work?+
Common structures: "50% match up to 6%" means they match 50 cents per dollar you put in, capped at 6% of your salary. "100% match up to 4%" means dollar-for-dollar up to 4% — more generous per dollar. To get the full match, you must contribute at least up to the cap. On an $80K salary with "50% up to 6%": contribute $4,800 → get $2,400 free. Don't contribute 6% → leave $2,400 on the table every year.
When can I access 401k money without penalty?+
Standard penalty-free withdrawals begin at age 59½. Early withdrawal before 59½: 10% penalty + income taxes. Exceptions: disability, death, SEPP (72t) distributions, separation from service at age 55+, qualified medical expenses, birth or adoption ($5,000 limit). SECURE 2.0 added: terminal illness, domestic abuse, disaster distributions. Required Minimum Distributions (RMDs) begin at age 73.
What is vesting and why does it matter?+
Vesting determines when employer match money becomes truly yours. Types: Immediate vesting (you own 100% of match from day 1), Cliff vesting (0% until a certain date, then 100%), Graded vesting (gradually earn the match over 2–6 years). If you leave a job before being fully vested, you forfeit unvested employer contributions. Always check your vesting schedule before changing jobs — it can cost you tens of thousands.