401k Calculator

Calculate how your 401k will grow with monthly contributions, employer match, and compound returns.

Your Information

Your age today
Target retirement age
Balance in your account now
Your gross annual income
Your monthly 401k contribution
Match % (e.g., 50 = 50% match up to 6%)
Expected investment return %

How the 401k Calculator Works

This calculator uses the compound interest formula to project your 401k balance at retirement. It accounts for your current balance, monthly contributions, employer match, and expected investment returns.

The calculation assumes consistent contributions and returns over time. Each month, your balance grows by the monthly return rate, then your contribution and employer match are added.

Maximizing Your 401k

To maximize your retirement savings with a 401k, first ensure you're getting the full employer match. Then contribute as much as you can afford, up to the annual contribution limit ($24,500 in 2026). Choose aggressive investments when you're young and shift to conservative as you approach retirement.

Understanding Employer Match

Employer match is a crucial part of your retirement savings. A common match formula is 50% of contributions up to 6% of salary. This means if you contribute 6% of your salary, your employer adds 3%. If you contribute less, they match proportionally.

Frequently Asked Questions

How is employer 401k match calculated?

Most employers match a percentage of your contributions up to a certain limit. A common match is 50% of contributions up to 6% of salary.

What is the 2026 401k contribution limit?

For 2026, the 401k contribution limit is $24,500 for individuals under 50 and $30,500 for those 50 and older with catch-up contributions.

How much return should I assume for my 401k?

Historical stock market returns average around 10% annually. However, a conservative estimate is 7% annually.

Can I change my 401k contribution amount?

Yes, most employers allow you to change your 401k contribution elections during open enrollment or if you experience a life event.

What happens to my 401k if I change jobs?

When you leave a job, you have several options: leave the money with your former employer, roll it to your new employer's 401k, or roll it to a traditional IRA.