If you're trying to decide where to put your retirement savings, you've probably run into the IRA versus 401(k) question. The honest answer is that for most people, it isn't really an either/or decision, but understanding how each account works helps you prioritize where your money goes first, and how much of it should go where.
A 401(k) is an employer-sponsored retirement plan, you can only contribute to one if your employer offers it, and contributions come directly out of your paycheck. An IRA (Individual Retirement Account) is opened independently through a brokerage or bank, anyone with earned income can open one, regardless of what their employer offers.
The biggest practical difference for most workers is the employer match. Many companies match a percentage of your 401(k) contributions, which is essentially free money added on top of what you contribute. IRAs never have an employer match, since there's no employer involved at all.
401(k)s allow significantly higher annual contributions than IRAs. For 2024, the 401(k) employee contribution limit is $23,000 (plus a $7,500 catch-up if you're 50 or older), compared to just $7,000 for IRAs ($8,000 if 50+). This gap matters most for higher earners who want to save aggressively and have already maxed out their IRA.
Both 401(k)s and IRAs come in Traditional and Roth flavors, and the tax logic is the same for either account type. Traditional contributions are typically tax-deductible now, with withdrawals taxed as ordinary income in retirement. Roth contributions are made with after-tax dollars, but qualified withdrawals, including all growth, come out completely tax-free.
This means the "IRA vs 401(k)" decision and the "Traditional vs Roth" decision are actually two separate questions. You could have a Traditional 401(k) and a Roth IRA simultaneously, and many people do exactly that to diversify their future tax exposure.
This is where IRAs often have an edge. A 401(k) limits you to whatever fund lineup your employer's plan provider offers, sometimes a handful of decent options, sometimes a lineup with high expense ratios and limited choices. An IRA, opened through most major brokerages, typically gives you access to virtually any stock, ETF, or mutual fund on the market, often with lower fees than a comparable 401(k) fund.
A common, sensible approach many financial planners suggest for prioritizing retirement contributions:
Can I contribute to both an IRA and a 401(k) in the same year? Yes, there's no rule preventing this, and doing so is a common strategy to maximize your total tax-advantaged retirement savings, subject to each account's own separate contribution limit.
Is a Roth IRA available to everyone? No, Roth IRA eligibility phases out at higher income levels, high earners may need to use a "backdoor Roth" strategy or rely on a Roth 401(k) instead, since 401(k)s generally don't have income limits for Roth contributions.
What happens to my 401(k) if I leave my job? You can typically roll it over into an IRA or into a new employer's 401(k) without triggering taxes, leave it with your former employer if allowed, or cash it out (though cashing out usually triggers taxes and penalties if you're under 59½).
Do I lose my employer match if I leave before it fully vests? Possibly, many employers use a vesting schedule for matching contributions, meaning you only keep 100% of the match after working there for a certain number of years. Check your plan's vesting schedule before assuming every matched dollar is fully yours.
It's easy to focus only on contribution limits and tax treatment, but fees quietly erode returns over decades of investing. 401(k) plans sometimes carry higher administrative and fund-level fees than what you'd find in a self-directed IRA at a major low-cost brokerage. A seemingly small 0.5% difference in annual fees can add up to tens of thousands of dollars less by retirement on a large balance, so it's worth reviewing your 401(k)'s fund lineup and expense ratios, not just assuming the account type alone determines your outcome.
There's no single winner between an IRA and a 401(k), they serve different purposes and work well together as part of a broader retirement strategy. The employer match makes the 401(k) hard to beat for your first dollars saved, while the IRA's flexibility and lower fees make it a strong choice for additional savings.
Curious how your own contributions could grow over time? Our free IRA Calculator projects your Traditional or Roth IRA balance based on your contributions and expected returns, so you can see the long-term impact of the choices above.
Ready to run your own numbers?
Try our free calculator →