401(k) Calculator
See how your 401(k) could grow with your contributions and an employer match.
When to use this calculator
Use this calculator to see what a 401(k) could be worth at retirement and how much a higher contribution or an employer match changes the answer. It is useful when you start a new job, get a raise, or wonder whether raising your contribution by one or two percent is worth it.
How this calculator works
Each month your contribution plus the employer match is added and grows at the expected return, compounded monthly. Returns are not guaranteed.
Step-by-step example
Using these inputs: Current balance: $10,000; Annual salary: $60,000; Your contribution: 6%; Employer match: 3%; Expected return: 6% per year; Years until retirement: 30.
With a $60,000 salary, 6% from you and a 3% match, about $450 goes in each month. Over 30 years at 6% that grows to $512,258, of which $340,258 is investment growth.
Tips for a better estimate
- Contribute at least enough to get the full employer match. It is part of your pay that you lose if you skip it.
- Raise your contribution a little each year, for example after every raise, so your take-home pay barely changes.
- Try a lower return, such as 4% to 5%, to see a more cautious result. Market returns are never guaranteed.
FAQ
What return should I use?
Long-term stock market averages are often cited near 6% to 8% before inflation, but real results vary.
Does this include salary raises?
No. Salary is kept constant, so real results may be higher.
What is the 401(k) contribution limit?
The IRS sets a yearly limit on employee contributions, which is $24,500 for 2026 for most people, with extra catch-up amounts at older ages. Check irs.gov for the current figures.
Traditional or Roth 401(k)?
Traditional contributions lower your taxable income now and are taxed when you withdraw. Roth contributions are taxed now and qualified withdrawals are tax-free. Which is better depends on your tax rate today versus in retirement.
Is the employer match free money?
It is part of your compensation, but it may vest over time. Ask your plan administrator when matching contributions become fully yours.
Rates and limits last updated: October 2026. This is an estimate for general information only, not financial, tax or legal advice.
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