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401(k) Calculator

Estimate only
$
$
%

Percent of salary you contribute.

%
%

E.g. 50% means $0.50 per $1 you contribute.

% of salary

Max percent of salary the match applies to.

Projected 401(k) balance at retirement

Projected 401(k) balance at retirement: $1,262,220

In 35 years, at age 65

Employer match earned

Employer match earned: $84,000

Free money over your career

Your total contributions

Your total contributions: $168,000

Investment growth

Investment growth: $985,220

Your yearly contribution

Your yearly contribution: $4,800

Employer yearly match

Employer yearly match: $2,400

Years to retirement

Years to retirement: 35

Where your balance comes from

Your contributions, the employer match, and investment growth, stacked over time.

Assumes a constant salary, contribution rate, and annual return, with contributions added each year. Contribution limits use the 2026 IRS limits. Estimate for planning only, not financial advice.

Project your 401(k) balance at retirement and see how much your employer match adds — the closest thing to free money most people ever get.

Reviewed by the ClearTally editorial team · Last updated July 4, 2026 · Methodology & sources

Part of the retirement calculators collection — 6 tools in the order most people need them.

How much should I contribute to my 401(k)?

At minimum, enough to collect the whole employer match. Anything less is a pay cut you chose. Past that, the answer depends on what else the money is for — advisors often point to 10–15% of salary including the match as a working target, but a high-interest debt or a missing emergency fund can reasonably come first.

The gap is larger than it looks, because the match compounds alongside your own money. Example: a 30-year-old earning $80,000 with $25,000 saved, retiring at 65 at a 7% return, contributing 6% with a 50% match up to 6%, lands at about $1,262,000. Halving that to 3% lands at about $765,000 — roughly $498,000 less, of which $42,000 is employer money simply never claimed. Estimates, and real returns will vary year to year.

What happens if I don't get the full employer match?

You forfeit it. A match is paid only on what you actually contribute, so contributing under the cap leaves that portion unclaimed for the year, and most plans give no way to make it up later. On the example above, contributing 3% against a 6% cap collects $42,000 of match across 35 years instead of $84,000. Raise your percent to at least the cap before optimising anything else about the account.

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How it works

Each year you contribute a percent of your salary, and your employer adds a match— commonly something like “50% of what you put in, up to 6% of your salary.” Your balance then grows at your expected return. We compound the balance annually and add each year's contributions on top:

  • Your contribution — salary × your percent, capped at the IRS elective-deferral limit ($24,500 for 2026 IRS limits, plus a catch-up from age 50).
  • Employer match — match rate × the lower of your contribution percent and the match cap, times your salary. Contributing less than the cap leaves match money unclaimed.
  • Growth — the whole balance compounds each year at your expected return.

Example: on an $80,000 salary contributing 6% ($4,800) with a 50%-up-to-6% match, your employer adds $2,400 every year — a 50% instant return before any market growth. Over a career that match alone can grow into six figures.

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FAQ

It's money your employer adds to your 401(k) based on what you contribute — for example, 50% of your contributions up to 6% of your salary. It's part of your compensation, so not contributing enough to get the full match is leaving guaranteed money on the table.

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