What is a 401(k)?
A 401(k) is an employer-sponsored retirement savings account. It is designed to make investing seamless by letting you automatically deposit a specific percentage of each paycheck directly into the account before it ever reaches your personal bank account.
Employer Match?
Many companies offer a matching program as a workplace benefit. If your company offers a match, they will contribute a certain amount to your account based on what you put in. For example, they might contribute $1 for every $2 that you contribute up to a certain percentage of your salary.
The Two Types of 401(k) Accounts
Just like IRAs, there are two kinds of 401(k):
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Traditional 401(k): A traditional 401(k) contains pre-tax dollars, but you will pay income tax on withdrawals.
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Roth 401(k): Contributions to a Roth 401(k) are made with after-tax dollars but you do not have to pay taxes on your withdrawals.
The 2026 401(k) Rules & Limits
Because these accounts are heavily incentivized by the government, they come with a few strict guidelines:
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Contribution Limits: For 2026, you can personally contribute up to $24,500 into a 401(k). This cap applies whether you use a Traditional 401(k), a Roth 401(k), or split your money between both. However, your employer's matching contributions do not count toward this personal limit.
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Catch-Up Contributions: If you are 50 years or older, you can contribute an additional $8,000 in 2026, pushing your total annual limit to $32,500.
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Withdrawal Age: Because these are strictly retirement accounts, you must wait until age 59.5 to withdraw your money, or you will face standard income taxes plus a 10% early withdrawal penalty.
What am I Actually Investing In?
One drawback of 401(k)s is that your investment options are often limited to what your employer offers. This is usually a select suite of mutual funds and ETFs. So, you may be forced to invest in something that does not perfectly align with your own investment goals and risk tolerance, however, many employers try and offer a wide variety of well-diversified investment products.