A 401(k) is a workplace retirement plan. An IRA (individual retirement arrangement) is an account you open yourself at a bank, credit union, or brokerage. Most households that can use both should: take any employer match in the 401(k) first, then consider an IRA, then go back to the 401(k) if they can save more. You do not have to pick only one.
This is education for U.S. savers, not tax advice. 2026 dollar limits below are IRS figures and will change—confirm them on IRS.gov before you treat a cap as gospel.
401(k) vs IRA: the difference in one table
| 401(k) (and similar workplace plans) | IRA (traditional or Roth) | |
|---|---|---|
| Who opens it | Your employer (you enroll) | You |
| 2026 employee / IRA contribution limit | $24,500 elective deferrals; age 50+ catch-up $8,000 more; ages 60–63 may have a higher catch-up of $11,250 if the plan allows (IRS 401(k) limits) | $7,500 across all your traditional and Roth IRAs combined; age 50+ $8,600 (IRS IRA limits) |
| Employer money | Match or profit-sharing, if the plan offers it | None from an employer (a spousal IRA uses a spouse’s compensation) |
| Investment menu | Whatever the plan offers | Usually a wide brokerage menu |
| Payroll automation | Yes—the cleanest habit | You set transfers yourself |
| Loans | Some plans allow them | Generally no |
| Roth vs traditional | Many plans offer both as a payroll checkbox | Both exist; Roth IRA contributions also have income phaseouts |
Roth vs traditional is a tax-timing choice inside either wrapper. That is a different article: Roth vs traditional IRA and 401(k). This page is which account to put dollars in first.
The SEC’s Investor.gov introduction to investing is the official map of accounts and products if you want the broader picture.
Which is better, a 401(k) or an IRA?
Neither is universally better. A 401(k) wins when there is a match or when you need the higher contribution limit. An IRA wins when you want a wider fund menu, a Roth option your workplace does not offer, or you have no workplace plan at all.
If your employer matches 50% of the first 6% of pay and you contribute 0%, you are turning down part of your compensation. That usually beats any IRA-vs-401(k) debate about expense ratios.
If there is no match, an IRA can be a reasonable first stop—especially if the 401(k) menu is expensive—then use the 401(k) for extra room. Compare the plan’s lowest-cost diversified option (often a target-date fund or index fund) using the prospectus and FINRA’s Fund Analyzer.
What should I fund first?
A common, boring order that matches how U.S. tax law is actually built:
- 401(k) up to the full match (if you have one).
- High-APR debt and a starter emergency fund so retirement money is not next month’s rent.
- IRA (Roth or traditional, based on this year’s tax brackets) if you want investment choice or Roth access.
- Back to the 401(k) toward the $24,500 employee limit (2026) if cash flow allows.
- Taxable brokerage only after those wrappers, unless you need money before retirement age.
You can contribute to a 401(k) and an IRA in the same year. The limits are separate. IRA contributions cannot exceed your taxable compensation for the year (or a spouse’s, on a joint return, for a spousal IRA).
Can I have both a 401(k) and an IRA?
Yes. Workplace coverage does not block IRA contributions. It can limit whether a traditional IRA contribution is deductible, and Roth IRA contributions can phase out with income. Confirm the current MAGI ranges on the IRS IRA pages, not a screenshot from a prior year. Excess IRA contributions can face a 6% tax each year they stay in the account (IRS IRA limits).
There is no age cap on regular IRA contributions for 2020 and later.
401(k) vs IRA withdrawals
Both are designed for retirement. Taking money early can mean ordinary income tax plus an extra 10% tax in many cases, with exceptions the IRS lists for each account type. Read the current IRS pages on 401(k) plans and IRAs before you treat a YouTube “hack” as a rule.
Roth IRA contributions (not earnings) can often be withdrawn without tax; earnings still have timing rules for a qualified distribution. A 401(k) generally does not work like a checking account, even a Roth 401(k).
Some 401(k)s allow loans. An IRA generally does not. A loan you cannot repay when you leave the job can turn into a taxable distribution. That is a reason to avoid using either account as an emergency fund.
What if I leave my job?
A 401(k) can often stay, move to a new employer’s plan, or be rolled to an IRA. An IRA you already own just stays yours. Rollovers have tax traps (especially withholding on a check made out to you). Use a direct rollover when you can, and confirm the steps with both recordkeepers. Investor.gov and the IRS cover rollovers; this is not the page to improvise a 60-day rollover from memory.
Fees and what to invest in
The account is the wrapper. The fund is the contents. A cheap index fund in either place compounds better than a high-fee active fund wearing a “retirement” label. Payroll dollar-cost averaging is how most 401(k)s actually get funded.
If you are just opening the first account, how to start investing is the order of operations around cash and high-APR debt.
Sources
- IRS, 401(k) and profit-sharing contribution limits and newsroom 2026 limits.
- IRS, IRA contribution limits.
- IRS, 401(k) plans and IRAs.
- SEC Investor.gov, Introduction to Investing.
- FINRA, Fund Analyzer.
- Dollar amounts in the example are a hypothetical illustration, not a savings target.
