401(k) Calculator
Estimate your 401(k) retirement account balance at retirement with employer matching and tax-deferred growth.
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Maximize Your 401(k)
Always contribute at least enough to get the full employer match — it's free money! 401(k) contributions reduce your taxable income. In 2025, the annual contribution limit is $23,500 ($31,000 if age 50+).
What is the 401(k) Calculator?
The 401(k) Calculator projects the growth of an employer-sponsored retirement account. It is specifically designed to calculate the immense financial impact of "Employer Matching" contributions.
How It Works (Algorithm)
The tool calculates your contribution as a percentage of your salary. Crucially, it then analyzes the employer match rules (e.g., "100% match on the first 5%"). It adds this "free money" to your contribution and compounds the combined total through the stock market until retirement age.
$$ \text{Total Monthly Input} = (\text{Salary} \times \text{Your \%}) + (\text{Salary} \times \text{Match \%}) $$
Ensures employer contributions are factored into compounding growth.
How to Use It
Enter your annual salary and your current 401(k) balance. Input the percentage of your paycheck you contribute, and the maximum match percentage your employer offers. The calculator will project your final portfolio balance at age 65.