401(k) Calculator

Estimate your retirement savings with employer match and compound growth.

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How a 401(k) Works

A 401(k) is a tax-advantaged retirement savings plan offered by employers. Contributions are made pre-tax from your paycheck, reducing your taxable income in the current year. Your investments grow tax-deferred until withdrawal in retirement. Many employers offer a matching contribution — essentially free money that can significantly accelerate your retirement savings.

2026 Contribution Limits

  • Under 50: $23,500 per year (employee contributions)
  • 50 and older: $31,000 per year (includes $7,500 catch-up)
  • Total limit (employee + employer): $70,000

The Power of Employer Match

If your employer matches 4% of your salary and you earn $75,000, that's an extra $3,000 per year of free money. Over a 35-year career with 7% annual returns, that employer match alone could grow to over $400,000. Always contribute at least enough to capture the full employer match before considering other investment vehicles.

Traditional vs Roth 401(k)

A Traditional 401(k) offers tax-deductible contributions now but taxes withdrawals in retirement. A Roth 401(k) uses after-tax money but provides tax-free withdrawals in retirement. If you expect to be in a higher tax bracket in retirement, Roth may be better. If you need tax savings now, Traditional is likely the better choice. Many advisors recommend splitting contributions between both.

Frequently Asked Questions

What is a 401(k)?

A 401(k) is an employer-sponsored retirement savings plan that allows you to contribute pre-tax dollars from your paycheck. Many employers offer matching contributions up to a certain percentage. Your investments grow tax-deferred until you withdraw them in retirement.

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

Financial advisors typically recommend contributing at least enough to get the full employer match (free money). Beyond that, aim for 10-15% of your salary. In 2026, the IRS contribution limit is $23,500 for those under 50, and $31,000 for those 50 and older (catch-up contribution).

What is an employer match?

An employer match is when your company contributes additional money to your 401(k) based on your own contributions. A common match is 50% of your contributions up to 6% of salary, or 100% up to 3-4%. Always contribute at least enough to get the full match — it is essentially free money.

When can I withdraw from my 401(k)?

You can withdraw penalty-free starting at age 59½. Withdrawals before that age incur a 10% early withdrawal penalty plus income taxes. Required Minimum Distributions (RMDs) begin at age 73. Some plans allow hardship withdrawals or loans against your balance.

What is the 4% rule?

The 4% rule suggests you can withdraw 4% of your retirement savings in your first year of retirement, then adjust for inflation each subsequent year, with a high probability your money will last 30 years. For example, a $1M nest egg supports ~$40,000/year in withdrawals.