Understanding Your 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, which is essentially free money added to your retirement savings. The combination of tax-deferred growth, employer matching, and compound interest makes the 401(k) one of the most powerful wealth-building tools available to American workers.
Contribution Limits (2025)
For 2025, the employee contribution limit is $23,500 for those under 50 and $31,000 for those 50 and older (includes $7,500 catch-up). The total limit including employer contributions is $70,000. These limits increase periodically with inflation. Maximizing contributions, especially early in your career, has an outsized impact on your final balance due to decades of compound growth.
The Power of Employer Matching
A common employer match is 50% of contributions up to 6% of salary. On an $85,000 salary contributing 6%, you put in $5,100 and your employer adds $2,550 -- an instant 50% return before any market gains. Not contributing enough to get the full match is the single biggest financial mistake most employees make. Always contribute at least enough to capture 100% of the employer match.
Frequently Asked Questions
Should I contribute to a Traditional or Roth 401(k)?â–¾
If you expect to be in a higher tax bracket in retirement, choose Roth (pay taxes now at a lower rate). If you expect a lower bracket in retirement, choose Traditional (defer taxes). Many advisors recommend a mix of both for tax diversification. Younger workers often benefit from Roth since they are typically in lower brackets and have decades for tax-free growth.
What happens to my 401(k) if I change jobs?â–¾
You have several options: roll it over to your new employer's 401(k), roll it into an IRA (often the best choice for more investment options and lower fees), leave it with your old employer, or cash it out (not recommended due to taxes and penalties). Employer matching contributions may have a vesting schedule, so check if you will lose unvested funds.
Can I withdraw from my 401(k) before retirement?â–¾
Early withdrawals before age 59 1/2 generally incur a 10% penalty plus income taxes. Exceptions include hardship withdrawals, the Rule of 55 (if you leave your job at 55+), and 401(k) loans (which you repay to yourself). Generally, avoid early withdrawals -- the lost compound growth far exceeds the immediate benefit.
How should I invest within my 401(k)?â–¾
Target-date funds are the simplest choice -- pick the fund closest to your retirement year. For more control, a common approach is a three-fund portfolio: US stock index, international stock index, and bond index. Younger investors can be more aggressive (80-90% stocks) while those closer to retirement should shift toward bonds. Keep fees low -- expense ratios above 0.5% significantly erode returns over decades.
Calclypso Editorial Team
Reviewed by certified financial planners. Last updated: April 2026. 401(k) projections assume consistent annual contributions and returns. Actual results will vary based on market conditions and contribution changes.