401(k) Retirement Calculator 2025
Estimate how much your 401(k) could grow by the time you retire. Enter your current age, balance, annual contribution, employer match, and expected annual return to see a year-by-year projection of your savings.
401(k) Retirement Calculator
Estimate your 401(k) balance at retirement
What Is a 401(k) and How Does It Work?
Pre-Tax Contributions
A 401(k) is an employer-sponsored retirement account that lets you contribute pre-tax dollars directly from your paycheck. Contributions reduce your taxable income for the year, and the money grows tax-deferred until you withdraw it in retirement. For 2025, the IRS allows contributions up to $23,500 ($31,000 if age 50+ including catch-up).
Employer Match
Many employers offer matching contributions — typically 50–100% of your contributions up to a percentage of your salary (e.g., 100% of the first 5%). This is free money that compounds alongside your own savings. Our calculator includes employer match automatically in your annual projections.
Compound Growth
The key to 401(k) growth is compound interest — your investment earnings generate their own earnings over time. Historically, the S&P 500 has returned an average of ~10% annually (before inflation), though we default to a more conservative 7% estimate. Even small differences in annual return dramatically affect your final balance over decades.
2025 401(k) Contribution Limits
IRS limits updated for the 2025 tax year. These limits apply to combined employee and employer contributions.
| Limit Type | 2025 Amount | 2024 Amount |
|---|---|---|
| Employee Contribution Limit | $23,500 | $23,000 |
| Catch-Up Contribution (50+) | $31,000 | $30,500 |
| Total Contribution Limit (Employee + Employer) | $70,000 | $69,000 |
| Catch-Up Total Limit (50+) | $77,500 | $76,500 |
Average 401(k) Returns by Asset Allocation
Historical average annual returns based on different portfolio allocations. Past performance does not guarantee future results.
| Portfolio Type | Stock / Bond Split | Avg. Annual Return | Best Year | Worst Year |
|---|---|---|---|---|
| Aggressive Growth | 90% / 10% | ~9.8% | +38% | -32% |
| Moderate Growth | 70% / 30% | ~8.7% | +29% | -22% |
| Balanced | 50% / 50% | ~7.5% | +21% | -14% |
| Conservative | 30% / 70% | ~6.2% | +15% | -8% |
| Income Focused | 10% / 90% | ~4.8% | +10% | -3% |
Data reflects S&P 500 and US bond market historical performance (1926–2024). Source: IRS.gov — Retirement Plans
401(k) Calculator FAQ
How much should I contribute to my 401(k)?
Financial experts generally recommend contributing at least enough to get the full employer match — that's free money. A common target is 10–15% of your salary including the match. For 2025, the IRS caps employee contributions at $23,500 ($31,000 if age 50+).
Is employer match included in the 401(k) limit?
The $23,500 employee contribution limit applies only to your own deferrals. Employer match contributions go toward the combined limit of $70,000 (2025) for total contributions across employee and employer contributions. Our calculator respects both limits automatically.
What's a reasonable annual return assumption?
Most financial planners use 6–8% for long-term projections, which accounts for inflation and market volatility. The S&P 500 has historically returned about 10% before inflation. Our calculator defaults to 7% as a conservative estimate. You can adjust this to see how different return rates affect your outcome.
What happens to my 401(k) if I change jobs?
You have several options: leave the balance in your former employer's plan (if allowed), roll it over to your new employer's 401(k), roll it into an IRA, or cash out (not recommended — you'll pay income tax plus a 10% early withdrawal penalty). A direct rollover to an IRA or new 401(k) keeps your savings tax-deferred.
Can I withdraw from my 401(k) before age 59½?
Yes, but withdrawals before age 59½ typically incur a 10% early withdrawal penalty plus regular income tax. Exceptions exist for certain hardships, first-time home purchases (up to $10,000), and SEPP (substantially equal periodic payments). Loans from your 401(k) are also an option if your plan allows them — typically up to $50,000 or 50% of your vested balance.
How is 401(k) income taxed in retirement?
Traditional 401(k) withdrawals are taxed as ordinary income at your marginal tax rate in the year you withdraw. Required Minimum Distributions (RMDs) begin at age 73 (as of 2025). Roth 401(k) contributions are made with after-tax dollars, so qualified withdrawals in retirement are tax-free.
Is this 401(k) calculator accurate?
This calculator provides estimates based on the inputs you provide. It uses compound growth calculations with annual compounding and respects 2025 IRS contribution limits. Actual results will vary based on market performance, fees, contribution changes, and withdrawal timing. Use this as a planning tool — consult a financial advisor for personalized retirement advice.