401K Calculator
Estimate your 401K balance at retirement. Factor in employer matching, annual contribution increases, and investment returns.
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Understanding 401K Plans
A 401K is an employer-sponsored retirement savings plan that offers tax advantages. Contributions are made pre-tax (Traditional 401K) or after-tax (Roth 401K), and investments grow tax-deferred until withdrawal.
Employer Matching
Employer match is essentially free money. A common match is 50% of contributions up to 6% of salary, or dollar-for-dollar up to 3-4%. Always contribute at least enough to get the full employer match — not doing so is leaving money on the table.
2025-2026 Contribution Limits
The annual 401K contribution limit is $23,500 (2025). If you're 50 or older, you can make an additional catch-up contribution of $7,500, bringing the total to $31,000. These limits apply to your contributions only — employer matches don't count toward the limit.
The 4% Rule for Retirement Income
The 4% rule suggests withdrawing 4% of your retirement savings in the first year, then adjusting for inflation each year. A $1 million 401K balance would provide approximately $40,000/year ($3,333/month) in retirement income.
Frequently Asked Questions
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Understanding Your 401K
Pre-tax up to $23,500/year. Match = free money. Traditional vs Roth: split for tax diversification.