Key Takeaways
Option A
401(k)
The workplace account with built-in employer incentives.
Best for: Employees whose employers offer matching contributions and who want higher annual contribution limits.
Option B
IRA (Individual Retirement Account)
The flexible, self-directed account open to almost anyone with earned income.
Best for: Workers who want broader investment choices or whose employer does not offer a retirement plan.
If your employer offers a 401(k) match
401(k)
Contributing at least enough to capture the full employer match is the most straightforward way to increase your effective savings rate. Leaving that match unclaimed is forgoing compensation already offered to you.
If your employer offers no workplace retirement plan
IRA
An IRA is the most accessible tax-advantaged account available to individuals without a workplace plan, and it can be opened at most banks or brokerage firms.
If you want maximum control over investment choices
IRA
IRAs typically allow access to a much broader set of investments than the menu inside a typical 401(k) plan.
If you want to save as much as possible each year
401(k)
The 401(k) employee contribution limit is significantly higher than the IRA limit, so it accommodates larger annual savings.
If you have maxed out your 401(k) match and have more to save
IRA
Once you have captured the employer match, opening and funding an IRA gives you a second tax-advantaged bucket before you return to contributing more to the 401(k).
What each account is and how it works
A 401(k) is a retirement savings account sponsored by your employer. You elect a percentage of each paycheck to go directly into the account before you receive it. Many employers add a matching contribution up to a set percentage of your salary. Contributions and earnings generally grow tax-deferred, meaning you pay income tax when you withdraw the money in retirement rather than in the year you earned it. For 2024, the IRS allows employees to contribute up to $23,000 to a 401(k), or $30,500 if you are 50 or older.
An IRA is an account you open yourself, independently of any employer, at a bank or brokerage. There are two main types: a Traditional IRA, where contributions may be tax-deductible and withdrawals are taxed in retirement, and a Roth IRA, where contributions are made with after-tax dollars and qualified withdrawals in retirement are tax-free. The 2024 contribution limit for all IRAs combined is $7,000 per year, or $8,000 if you are 50 or older. Income limits apply to Roth IRA eligibility and to the deductibility of Traditional IRA contributions. For a deeper look at how these accounts fit into a broader savings strategy, see Retirement Accounts Explained.
Head-to-head comparison
The table below contrasts the two account types across the dimensions that matter most to a first-time saver.
| Criterion | 401(k) | IRA |
|---|---|---|
| Who opens it | Employer sponsors; employee enrolls | Individual opens independently |
| 2024 contribution limit | $23,000 ($30,500 if age 50+) | $7,000 ($8,000 if age 50+) |
| Employer matching | Often available | Not available |
| Investment options | Limited menu set by plan | Broad (stocks, ETFs, funds) |
| Income limits to contribute | None for contributions | Roth IRA phases out at higher incomes |
| Tax treatment (traditional) | Pre-tax contributions; taxed on withdrawal | May be deductible; taxed on withdrawal |
| Roth option available | Yes, if plan offers Roth 401(k) | Yes, via Roth IRA |
| Early withdrawal penalty | 10% before age 59.5 (exceptions apply) | 10% before age 59.5 (exceptions apply) |
One distinction worth noting: investment choice. Most 401(k) plans offer a set menu of mutual funds chosen by the plan administrator. IRAs held at a brokerage typically allow access to individual stocks, bonds, exchange-traded funds, and a wide range of mutual funds. If the investment options inside your 401(k) carry high expense ratios (the annual fee charged by a fund), that cost compounds over decades and can affect long-term outcomes. For more on what to look for in a workplace plan, see Employer-Sponsored Retirement Plans.
The employer match: why it changes the math
The most common advice in retirement planning is to contribute enough to your 401(k) to capture the full employer match before directing money elsewhere. That advice has a straightforward basis: a 50% or 100% match on your contribution is an immediate return no other account can replicate. If your employer matches 50 cents for every dollar you contribute up to 6% of your salary, and you earn $50,000, contributing $3,000 triggers a $1,500 employer addition. Choosing not to contribute that amount means receiving $1,500 less in total compensation.
After capturing the full match, many financial planners suggest opening or funding an IRA next, particularly a Roth IRA if your income qualifies, because of the tax-free withdrawal benefit in retirement. Once the IRA contribution limit is reached, you can return to your 401(k) to contribute beyond the match if your budget allows. This sequencing is not a legal requirement; it is a commonly cited framework for getting the most from limited savings dollars. Consult a qualified financial adviser to determine what order makes sense for your income, tax situation, and goals.
Choosing your starting point
For most people with access to a workplace 401(k) that includes an employer match, starting there is logical. If no workplace plan exists, an IRA is the first available tax-advantaged option. If you do have access to a 401(k) but the investment menu is poor or the fees are high, it may still be worth contributing enough to get the match, then directing additional savings into an IRA with better options.
Two other factors affect this decision. First, income: Roth IRA eligibility phases out above certain income thresholds, and the deductibility of Traditional IRA contributions depends on whether you or your spouse have access to a workplace plan and on your adjusted gross income. Second, timeline: the longer money stays invested in a tax-advantaged account, the more potential compounding can work in its favor. Starting with any account, even at a small contribution amount, generally produces a better position than waiting.
The choice between a 401(k) and an IRA is often not permanent. Many savers use both over time. For a practical walkthrough of setting up your first contributions, see Your First Retirement Plan. To compare the two IRA types in detail, see Traditional IRA vs Roth IRA.
This article is for general informational purposes only and does not constitute personalized financial, tax, or investment advice. Contribution limits, income thresholds, and tax rules change periodically; verify current figures on IRS.gov. Consult a licensed financial adviser, tax professional, or attorney before making decisions specific to your circumstances.