401(k) Calculator US
Project your 401(k) balance at retirement from your contributions, employer match and expected return.
Estimate using 2026 federal figures; not tax advice. State tax is simplified — actual withholding varies. Consult a professional for your situation.
How it works
Enter your salary, ages, contribution percentage, employer match and an expected return. The calculator grows your balance each year with contributions and compounding, caps your contribution at the 2026 limit of $24,500, and shows the projected balance at retirement.
Frequently asked questions
How much can I contribute to a 401(k) in 2026?
The employee deferral limit is $24,500. Those 50+ can add an $8,000 catch-up ($32,500 total), with a higher $11,250 catch-up at ages 60–63. The combined employee-plus-employer cap is $72,000.
What is an employer match?
It is money your employer adds based on what you contribute, such as 100% of the first 4% of pay. Contributing enough to get the full match is essentially free retirement money.
What is the difference between a traditional and Roth 401(k)?
Traditional contributions are pre-tax and taxed when withdrawn; Roth contributions are after-tax and qualified withdrawals are tax-free. The best choice depends on whether you expect a higher tax rate now or in retirement.
When can I withdraw from my 401(k) without penalty?
Generally at age 59½. Earlier withdrawals usually incur a 10% penalty plus income tax, aside from specific exceptions.
What happens to my 401(k) if I change jobs?
You can typically leave it, roll it into your new employer’s plan, or roll it into an IRA. Rolling over keeps the money tax-advantaged and avoids penalties.
Is this calculator financial advice?
No. It provides estimates for planning and education only. For decisions about your retirement, consult a qualified financial professional.
How a 401(k) grows your savings
A 401(k) is an employer-sponsored retirement account where contributions are invested and grow tax-advantaged until withdrawal. This calculator projects your balance from your contribution rate, employer match, expected return and years to retirement — showing how contributions and compounding build the total over time.
2026 contribution limits
For 2026 the employee deferral limit is $24,500. If you are 50 or older you can add a catch-up of $8,000 (a $32,500 total), and a higher "super catch-up" of $11,250 applies at ages 60–63. The combined employer-plus-employee limit is $72,000. Always confirm the current year’s figures with the IRS, as they are adjusted periodically.
Capture the full employer match
Many employers match contributions — for example, 100% of the first 3–6% of your salary. That match is effectively an immediate return on your money, so contributing at least enough to receive the full match is usually the highest-value step. A worker earning $60,000 with a 4% match leaves $2,400 a year on the table by not contributing enough to claim it.
Traditional vs Roth
Traditional 401(k) contributions are pre-tax — they lower your taxable income now and are taxed on withdrawal. Roth 401(k) contributions are after-tax — no break today, but qualified withdrawals are tax-free in retirement. Withdrawals before age 59½ generally face a 10% penalty plus income tax, and required minimum distributions apply later in life.
Results are estimates for general guidance in United States and may not reflect the latest local rates, fees or rules. Check official sources before making decisions.