What These Two Accounts Actually Are
When you start saving for retirement, you'll quickly encounter two account types: the 401(k) and the IRA (Individual Retirement Account). Both offer tax advantages designed to encourage long-term saving, but they work in meaningfully different ways.
A 401(k) is a retirement savings plan sponsored by your employer. You contribute a portion of each paycheck before taxes are taken out, and many employers add a matching contribution on top. Your money grows tax-deferred, meaning you pay income tax only when you withdraw funds in retirement.
An IRA is an account you open yourself - independently of any employer - through a brokerage, bank, or financial institution. There are two main types: a Traditional IRA, which may offer a tax deduction on contributions now, and a Roth IRA, which uses after-tax money but allows tax-free withdrawals in retirement. For a deeper look at that choice, see Traditional vs. Roth IRA.
Key Differences: Limits, Flexibility, and Control
| Feature | 401(k) | IRA (Traditional or Roth) | |
|---|---|---|---|
| Who sets it up | Feature | Your employer | You, independently |
| 2024 contribution limit | 2024 contribution limit | $23,000 (+ $7,500 catch-up) | $7,000 (+ $1,000 catch-up) |
| Employer match available | Employer match available | Yes, if offered | No |
| Investment choices | Investment choices | Limited to plan menu | Broad range available |
| Income limits to contribute | Income limits to contribute | None | Roth IRA has phase-outs |
| Tax treatment (traditional) | Tax treatment (traditional) | Pre-tax; taxed on withdrawal | Pre-tax or after-tax (Roth) |
| Portability | Portability | Tied to employer; rollover on exit | Fully portable |
A few distinctions stand out for first-time savers:
- Contribution limits: For 2024, the 401(k) limit is $23,000 (plus $7,500 catch-up if you're 50 or older). IRA contributions are capped at $7,000 ($8,000 with catch-up). This makes the 401(k) the larger tax-advantaged bucket.
- Investment options: 401(k) plans offer a preset menu of investments chosen by your employer - typically mutual funds. IRAs generally give you access to a much broader range of investment types.
- Employer match: Only 401(k)s can include an employer match - effectively free money added to your account. IRAs have no equivalent.
- Income limits: Anyone with earned income can contribute to a Traditional IRA, but Roth IRA eligibility phases out at higher income levels. 401(k)s have no income-based contribution limits.
For a balanced view of 401(k) tradeoffs, see pros and cons of keeping money in a workplace 401(k).
How to Decide Where to Start
Most financial educators suggest a straightforward sequencing approach for new savers:
- Contribute enough to your 401(k) to get the full employer match. If your employer matches 3% of your salary, contribute at least 3%. Leaving this on the table is widely considered one of the most common retirement saving mistakes.
- Open and fund an IRA. Once you're capturing the match, an IRA offers more flexibility and often a wider investment selection. If you're early in your career and expect your income - and tax rate - to rise, a Roth IRA may be worth exploring. See our step-by-step IRA opening guide if you're ready to get started.
- Return to your 401(k). If you've maxed out your IRA and still have room to save, increase your 401(k) contributions toward the annual limit.
This sequence isn't a rigid rule - your situation may differ based on income, employer plan quality, and tax considerations. A licensed financial advisor or tax professional can help you tailor this to your circumstances.
Using Both Accounts Together
Nothing prevents you from contributing to both a 401(k) and an IRA in the same year, as long as you stay within each account's annual limits. In fact, using both is one of the most effective ways to build tax-diversified retirement savings - meaning you'll have both pre-tax and potentially tax-free pools of money to draw from later.
If you change jobs, your 401(k) balance doesn't disappear. You can leave it with your former employer, roll it into your new employer's plan, or transfer it to an IRA. Learn more about how that works in our guide to rolling over a 401(k) into an IRA.
The key insight for new savers: these accounts are tools, not competing choices. Starting with even a small contribution to either one puts the power of tax-advantaged, long-term growth to work for you.
This article is for general informational and educational purposes only and does not constitute personalized financial, tax, or investment advice. Please consult a qualified financial advisor or tax professional regarding decisions specific to your situation.
