401k Calculator — Maximize Your Employer Match and Retirement Savings
Free 401k calculator to estimate your retirement savings. See how employer matching contributions and compound interest grow your retirement fund over time.
A 401k is the most powerful retirement savings tool available to American workers. The combination of tax-deferred growth employer matching contributions and compound interest can turn modest regular contributions into a million-dollar retirement fund. Many Americans leave free money on the table by not contributing enough to capture their full employer match. Our calculator shows you the dramatic impact of maximizing your 401k contributions and how even small increases today lead to huge differences at retirement.
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Key Information
| Parameter | Details |
|---|---|
| 2026 Contribution Limit | $23500 (under 50) $31000 (50+) |
| Average Employer Match | 4% - 6% of salary |
| Average Annual Return | 7% - 10% (balanced portfolio) |
| Catch-Up Contribution (50+) | $7500 additional |
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Use Calculator NowFrequently Asked Questions
How much should I contribute to my 401k?
At minimum contribute enough to capture your full employer match — this is literally free money. If your employer matches 50% up to 6% of salary then contribute at least 6%. Ideally aim for 15% of gross income including employer match. If you start at 25 contributing 15% of a $60000 salary with 6% returns you could have over $1.5 million by 65.
What is a 401k employer match?
An employer match means your company contributes additional money to your 401k based on your own contributions. A common match is 50 cents for every dollar you contribute up to 6% of your salary. On a $70000 salary contributing 6% ($4200) gets you an extra $2100 from your employer — a 50% instant return on your money that no other investment can match.
Should I choose Traditional or Roth 401k?
Traditional 401k reduces your taxable income now and you pay taxes on withdrawals in retirement. Roth 401k uses after-tax dollars but withdrawals in retirement are completely tax-free. If you expect to be in a higher tax bracket in retirement choose Roth. If you are in a high bracket now and expect lower income in retirement choose Traditional. Many experts recommend splitting contributions between both.
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Last updated: 24 March 2026