What IRAs and 401(k)s are, and why they matter

An IRA (Individual Retirement Account) and a 401(k) are accounts where you set aside money for retirement and get tax breaks for doing it. The difference is simple: a 401(k) comes through your employer, and an IRA is something you open on your own at a bank or brokerage. Both let your money grow without being taxed on the earnings each year, which means more of your savings stays in the account instead of going to taxes.

For lower-income households, these accounts matter because the tax breaks are real money. If you earn $30,000 a year and put $3,000 into a traditional IRA, you may not owe federal income tax on that $3,000—meaning you get a refund or owe less at tax time. That's a direct benefit, not a loan you have to pay back.

The catch is that you cannot touch the money without penalty until you turn 59½. The account is designed to stay locked away until retirement. Understanding how each one works helps you decide which fits your situation and whether starting one makes sense for you right now.

Key Takeaways

  • A 401(k) is offered by your employer and takes money directly from your paycheck; an IRA is an account you open yourself and fund on your own schedule.
  • Traditional IRAs and 401(k)s reduce your taxable income in the year you contribute, which can lower your tax bill or increase your refund.
  • Roth IRAs let you contribute after-tax money now so withdrawals in retirement are tax-free, which can be better if you expect to earn more later.
  • If your employer offers a 401(k) match, contributing enough to get the full match is the fastest way to grow retirement savings with assistance programs.
  • You can open an IRA even if you are self-employed or have no employer plan, and contribution limits are the same for everyone.

How a 401(k) works and what your employer contributes

A 401(k) is a retirement plan your employer offers. You choose how much to have taken from each paycheck—say, $50 or $100—and that money goes into your 401(k) account before taxes are calculated. That's why it lowers your taxable income. If you earn $2,000 in a paycheck and contribute $100 to your 401(k), you only owe income tax on $1,900.

Many employers also contribute money to your 401(k)—this is called a match. A common match is 50% of what you contribute, up to 6% of your salary. That means if you contribute 6% of your paycheck, your employer adds another 3%. This is assistance programs for retirement. If your employer offers a match and you are not taking it, you are leaving money on the table.

The money in your 401(k) is invested in funds you choose from a menu your employer provides. The balance grows or shrinks depending on how those investments perform. You cannot withdraw the money before age 59½ without paying a 10% penalty plus income tax on the amount you take out, with narrow exceptions for hardship or disability.

Understanding IRAs and how they differ from 401(k)s

An IRA is a retirement account you open yourself, usually at a bank, credit union, or brokerage firm. You fund it with your own money on whatever schedule works for you—monthly, yearly, or whenever you have cash to set aside. Unlike a 401(k), there is no employer involved and no paycheck deduction.

There are two main types: traditional IRAs and Roth IRAs. With a traditional IRA, you contribute money and reduce your taxable income that year, just like a 401(k). With a Roth IRA, you contribute money that has already been taxed, so you do not get a tax break now—but when you withdraw money in retirement, it comes out tax-free.

For lower-income households, a Roth IRA often makes more sense. If you are in a low tax bracket now, the tax break from a traditional IRA is small. But if you earn more later in life, a Roth means you lock in today's low tax rate on that money forever. You also have more flexibility with a Roth: you can withdraw the money you contributed (not the earnings) before retirement without penalty if you need it.

Income limits and who can open each type of account

Anyone with earned income can open a traditional IRA. There are no income limits. You can earn $20,000 or $200,000 and still open one. However, if you have a 401(k) at work, the tax deduction for a traditional IRA starts to phase out at certain income levels. For 2024, if you are single and covered by a 401(k), the deduction begins to reduce if you earn more than $77,000. The exact numbers change each year.

Roth IRAs have income limits that apply to everyone. For 2024, if you are single, you can contribute the full amount if you earn less than $146,000. Between $146,000 and $161,000, your contribution limit shrinks. Above $161,000, you cannot contribute to a Roth at all. These numbers are higher for married couples filing jointly. Again, these limits change yearly.

If you are self-employed or have no employer plan, you have the most flexibility. You can open either a traditional or Roth IRA, and you can also open a SEP IRA (Simplified Employee Pension IRA) if you have self-employment income. A SEP IRA lets you contribute much more than a regular IRA—up to 25% of your net self-employment income.

Contribution limits and how much you can save each year

For 2024, you can contribute up to $7,000 to an IRA (traditional or Roth, or a combination of both). If you are 50 or older, you can contribute an extra $1,000, for a total of $8,000. These limits apply to the total across all your IRAs combined—you cannot contribute $7,000 to a traditional IRA and another $7,000 to a Roth in the same year.

For a 401(k), the limit is higher: $23,500 in 2024, or $31,000 if you are 50 or older. However, this is the total you and your employer can contribute together. If you contribute $10,000 and your employer matches with $3,000, that counts as $13,000 toward your limit. Most lower-income workers do not hit the 401(k) limit, so this is rarely a constraint.

The contribution limits change each year, usually by small amounts tied to inflation. If you cannot afford to contribute the full amount, contribute what you can. Even $50 or $100 per paycheck adds up over time, especially with employer matching or tax breaks.

Tax benefits and how they affect your refund or tax bill

With a traditional IRA or 401(k), your contribution reduces your taxable income for that year. If you earn $35,000 and contribute $3,000 to a traditional IRA, you only owe income tax on $32,000. For someone in the 12% federal tax bracket, that saves $360 in federal taxes. That money comes back as a larger refund or a smaller tax bill.

With a Roth IRA, you get no tax break in the year you contribute. You pay income tax on the money before it goes in. But once it is in the Roth, all the growth is tax-free, and you never pay tax on withdrawals in retirement. This is valuable if you expect your income to rise significantly over time.

Lower-income households often benefit from a third option: the Saver's Credit (officially the Retirement Savings Contributions Credit). If you contribute to an IRA or 401(k) and your income is below a certain threshold—$68,250 for single filers in 2024—you may get a credit on your tax return worth 10%, 20%, or 50% of your contribution, up to $1,000. This is a direct credit, not a deduction, so it reduces your tax dollar-for-dollar. You claim it on Form 8880 when you file your taxes.

When to choose a 401(k), when to choose an IRA, and what to do if you have both

If your employer offers a 401(k) with a match, start there and contribute enough to get the full match. That is assistance programs and should be your first priority. After you have captured the full match, you can decide whether to contribute more to the 401(k) or open an IRA.

Choose an IRA if you want more control over your investments, lower fees, or the flexibility of a Roth. IRAs typically offer more investment choices than 401(k)s, and fees are often lower. If you are self-employed or your employer does not offer a 401(k), an IRA is your main option.

If you have both a 401(k) and an IRA, you can contribute to both in the same year, but your total IRA contributions cannot exceed the annual limit ($7,000 in 2024). Your 401(k) contributions are separate and do not count toward the IRA limit. Many people use a 401(k) for the employer match and an IRA for additional savings or for the Roth option.

Getting started: opening an account and making your first contribution

If your employer offers a 401(k), ask your HR or payroll department for the enrollment materials. They will give you a form to choose how much to contribute and which investment options you want. You can usually enroll online or on paper. Your contribution starts on the next paycheck cycle.

To open an IRA, visit a bank, credit union, or brokerage—Vanguard, Fidelity, and Schwab are large providers, but many smaller institutions offer IRAs too. You can open one online in 15 minutes. You will need to provide your name, Social Security number, address, and employment information. Then you choose whether you want a traditional or Roth IRA and decide how to invest the money (or keep it in a savings option while you decide).

You can contribute to an IRA for a given tax year until the tax filing deadline the following year—usually April 15. So you have until April 15, 2025, to contribute to an IRA for the 2024 tax year. With a 401(k), contributions must be made during the calendar year; you cannot make 2024 contributions after December 31, 2024.

Frequently Asked Questions

Can I withdraw money from my IRA or 401(k) before retirement?

You can withdraw from a traditional IRA or 401(k) before age 59½, but you will owe a 10% penalty plus income tax on the amount. Some exceptions exist: disability, medical expenses over 7.5% of your income, and a few others. With a Roth IRA, you can withdraw the money you contributed (not the earnings) anytime without penalty, though earnings are locked until 59½.

What happens to my 401(k) if I leave my job?

Your 401(k) stays yours. You can leave it with your former employer, roll it into an IRA at a bank or brokerage, or roll it into your new employer's 401(k) if they allow it. A rollover to an IRA often gives you more investment choices and lower fees. Do not cash it out—you will owe taxes and a 10% penalty on the full amount.

Do I have to invest my IRA money in the stock market?

No. You can keep IRA money in a savings account, money market fund, or certificates of deposit (CDs) if you prefer. You will earn less over time than you might with stocks or stock funds, but your money is safer and more stable. Many people use a mix: some in savings, some in funds.

What if I do not have earned income—can I still open an IRA?

No. Both traditional and Roth IRAs require earned income from work. If you are unemployed, retired, or have only investment income, you cannot contribute to an IRA. A 401(k) is only available through an employer, so that is not an option either. If you are married and your spouse has earned income, they can open a spousal IRA in your name.

How do I know if the Saver's Credit applies to me?

You may have access to if your income is below $68,250 (single) or $136,500 (married filing jointly) in 2024 and you contributed to an IRA or 401(k). You claim it on Form 8880 when you file your tax return. Your tax software or preparer can calculate whether you may have access to and how much the credit is worth.