IRA vs 401(k): differences, 2026 limits and which to use

Written by the Tactfolio research teamPublished 6 min read

An IRA is a retirement account you open yourself. A 401(k) is a retirement account you get through your job. Both give you tax breaks for saving. The 401(k) lets you save more each year and often comes with free money from your employer. The IRA usually gives you more choice in what you invest in.

Key points#

  • For 2026, you can put up to $24,500 into a 401(k), but only $7,500 into an IRA (IRS).
  • Many employers add money to your 401(k) when you save. This is called a match.
  • An IRA lets you pick from almost any stock, fund or bond your broker offers. A 401(k) gives you a short menu.
  • Both come in two tax types: traditional (tax break now) and Roth (tax-free later).
  • You can have both at the same time.

What is the difference between an IRA and a 401(k)?#

The main difference is who sets up the account. Your employer sets up a 401(k). You set up an IRA on your own at a bank or broker.

That one difference changes a lot. Here is how they compare in 2026:

401(k)IRA
Who opens itYour employerYou
2026 limit (under 50)$24,500$7,500
Extra if 50 or older$8,000 more$1,100 more
Employer matchOftenNo
Investment choicesA short list your plan picksAlmost anything your broker offers
Roth versionRoth 401(k), if your plan has oneRoth IRA, with income limits
Money comes fromYour paycheck, before you see itYour bank account

Limits are from the IRS for tax year 2026 (401(k) limits, IRA limits). They usually go up a little each year.

How does a 401(k) work?#

A 401(k) takes money from each paycheck and puts it in your account. You choose how much. The plan invests it in the funds you pick from its menu.

The big draw is the employer match. A match is money your employer adds when you save. For example, a plan might add 50 cents for every dollar you save, up to 6% of your pay. Check your own plan, because every plan is different.

Here is an example with round numbers. Say you earn $60,000. You save 6%, which is $3,600 a year. With a 50% match, your employer adds $1,800. You get $5,400 in the account for $3,600 of your own money.

Some employer money is not yours right away. A vesting schedule says how long you must work there before you keep the match. Your plan papers list it.

How does an IRA work?#

An IRA (individual retirement account) is an account you open at a broker or bank. You move money in from your bank account. Then you choose what to buy.

The IRA’s strength is choice. You can usually buy any stock, ETF, mutual fund or bond your broker sells. A 401(k) plan picks a short list of funds for you.

The IRA’s limit is much lower. In 2026 you can put in $7,500 a year, or $8,600 if you are 50 or older. That total covers all your IRAs together, traditional and Roth.

Traditional vs Roth: the tax choice#

Both accounts come in two tax types. The choice is about when you pay tax.

  • Traditional: you get a tax break now. Your savings lower this year’s taxable income. You pay income tax when you take money out in retirement.
  • Roth: no tax break now. You save money you already paid tax on. Then you take it out tax-free in retirement, as long as you follow the rules.

A simple way to think about it: if you expect to be in a higher tax bracket later, Roth often makes sense. If you expect a lower bracket later, traditional often makes sense. Nobody knows future tax rates for sure, so some people split their savings between both.

Roth IRA vs 401(k)#

A Roth IRA has income limits. For 2026, the amount you can put in starts to shrink at $153,000 of income for single filers. It drops to zero at $168,000. For married couples filing jointly, the range is $242,000 to $252,000 (IRS).

A 401(k), including a Roth 401(k), has no income limit. That is one reason high earners use a Roth 401(k) when their plan offers one.

Can you have both an IRA and a 401(k)?#

Yes. Many people put money into both. The limits are separate.

There is one catch for a traditional IRA. If you have a 401(k) at work, your traditional IRA tax break shrinks at higher incomes. For 2026, it phases out between $81,000 and $91,000 for single filers (IRS). You can still put money in. You just may not get the tax deduction.

Which should you fund first?#

Many savers follow a simple order. This is a common rule of thumb, not advice for your situation.

  1. Put enough in your 401(k) to get the full employer match.
  2. Then fund an IRA, for more investment choice and often lower fees.
  3. If you still have money to save, go back and add more to your 401(k).

Your own answer depends on your plan’s fees, its fund menu, your income and your taxes. A fee-only financial planner or tax professional can help.

Rules for taking money out#

Both accounts are meant for retirement. Taking money out before age 59½ usually means income tax plus a 10% extra tax. There are some exceptions (IRS).

Traditional accounts also have required minimum distributions. These are amounts you must take out each year once you reach a set age (73 for most people today). A Roth IRA has no required withdrawals while you are alive. Since 2024, a Roth 401(k) doesn’t either.

Common mistakes#

  • Not saving enough in the 401(k) to get the full match.
  • Leaving 401(k) money in cash. Some plans park new money in a money market fund until you choose.
  • Putting more than the limit into a Roth IRA when your income is too high.
  • Cashing out a 401(k) when you change jobs. You can usually roll it into an IRA instead.
  • Ignoring fees. A 1% yearly fee takes a big bite over 30 years.

Try it on Tactfolio#

Retirement money is usually invested for decades, so a simple, steady plan matters more than clever trades. The 60/40 portfolio is the classic balanced mix of stocks and bonds. You can open it, see every rule, and look at its hypothetical backtest. To learn what makes up the stock side, read what the S&P 500 index is. Some long-term mixes also hold gold or other commodities for balance. To compare more mixes, browse the classic strategies.

Common questions#

Is a 401(k) or IRA better?#

Neither is better for everyone. A 401(k) wins when your employer offers a match, because that is extra money. An IRA wins on choice and often on fees. Many people use both.

Can I have a 401(k) and a Roth IRA?#

Yes. Having a 401(k) at work does not stop you from opening a Roth IRA. Only your income decides how much you can put into the Roth IRA.

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

The money stays yours, along with any vested match. You can usually leave it in the old plan, move it to your new job’s plan, or roll it into an IRA. Cashing it out usually means taxes and a 10% penalty if you are under 59½.

How much should I put in my 401(k)?#

At least enough to get the full employer match, if there is one. Beyond that, it depends on your budget and goals. The 2026 limit is $24,500 if you are under 50.

Is a Roth 401(k) the same as a Roth IRA?#

No. Both use after-tax money and grow tax-free. A Roth 401(k) is through your employer, has the higher 401(k) limit, and has no income limit. A Roth IRA is one you open yourself, with a lower limit and income rules.

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