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Investing & growth

401(k) Calculator

Project your balance at retirement — salary growth, the 2026 IRS contribution limit, and the employer match that too many people leave on the table.

InputsRET-35Y
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Balance at 6535 yrs
$2,104,825
you contributed$411,142
employer match — free money$154,178
growth$1,514,505
match / yr today
$2,550
starting balance
$25,000
growth multiple
3.6×
Projected balance
Balance Contributed (you + match)
$0$568k$1137k$1705k$2273k2026203820492061
Projected balance — data table
YearBalanceContributed (you + match)
2026$25,000$0
2027$36,100$9,350
2028$48,258$18,981
2029$61,555$28,900
2030$76,081$39,117
2031$91,930$49,640
2032$109,204$60,480
2033$128,013$71,644
2034$148,473$83,143
2035$170,711$94,988
2036$194,860$107,187
2037$221,066$119,753
2038$249,483$132,695
2039$280,278$146,026
2040$313,628$159,757
2041$349,725$173,900
2042$388,772$188,467
2043$430,990$203,471
2044$476,614$218,925
2045$525,894$234,843
2046$579,102$251,238
2047$636,527$268,125
2048$698,477$285,519
2049$765,286$303,434
2050$837,309$321,887
2051$914,928$340,894
2052$998,549$360,471
2053$1,088,612$380,635
2054$1,185,584$401,404
2055$1,289,967$422,796
2056$1,402,298$444,830
2057$1,523,154$467,525
2058$1,653,151$490,901
2059$1,792,948$514,978
2060$1,943,254$539,777
2061$2,104,825$565,320

Contributing 8% of an $85,000 salary from age 30 to 65, with a 50%-up-to-6% employer match and a 7% assumed return, builds a 401(k) of about $1,837,911. Of that, $411,142 is your own money, $154,178 is employer match, and $1,272,590 is investment growth.

The match alone is worth $2,550 in the first year — money you forfeit by contributing less than 6%. Assumes 3% annual raises; the 7% return is an assumption, not a guarantee, and the figure is pre-tax.

How the projection works

Each year, your balance grows at the expected return, then the year's contributions are added: your deferral (a percentage of that year's salary, capped at the 2026 IRS limit of $24,500) plus the employer match. Salary rises by your annual raise, so contributions grow over time even at a fixed percentage.

balance′ = balance × (1 + r) + min(salary × c%, $24,500) + salary × min(c%, cap%) × match%

The match is free money: at a 50%-up-to-6% match, contributing at least 6% earns an instant 50% return on that slice before any market growth. The chart splits your balance into what you put in, what your employer added, and what compounding did.

Common questions

How does an employer match work?
A typical match is a percentage of what you contribute, on contributions up to a share of your salary — “50% up to 6%” means: contribute 6% of pay and your employer adds 3% of pay. Contribute less and you leave part of the match unclaimed; it's the highest-return money available to you.
How much can I contribute in 2026?
The employee elective-deferral limit is $24,500 for 2026 (IRS Notice 2025-67). If you're 50 or older you can add a catch-up contribution on top — this calculator projects the base limit only. Employer match does not count against the employee limit.
What return should I assume?
A diversified stock-heavy portfolio has historically returned around 7–10% nominal per year over long horizons, but with large swings. Many planners model 6–7% to stay conservative. The projection uses a constant rate — reality won't be that smooth.
Does this include taxes?
No. Traditional 401(k) contributions are pre-tax and withdrawals in retirement are taxed as income; Roth contributions are the reverse. This tool projects the account balance, not the after-tax value.

How we calculate this

Annual compounding, end-of-year contributions, employee deferral capped at the 2026 IRS limit (held constant), no catch-up, fees, or vesting. Nominal, pre-tax figures — not financial advice.

Where to go next

For money outside a workplace plan — a brokerage account or an IRA — project growth with your own contribution schedule, without the match and limit logic.

This projects the balance, not what you keep after tax. To settle the choice itself, compare Roth against Traditional on after-tax value — at the same tax rate they turn out to be identical.

Projections assume a constant return and a constant contribution limit; markets fluctuate, limits change annually, and employer plans differ (vesting schedules, true-up policies, Roth options). Estimates for general information only — not financial, tax, or investment advice.