401(k) vs Roth IRA: Which Retirement Account Is Better for You?

When I opened my first retirement account, I froze at the exact question you're probably asking: 401(k) or Roth IRA? My employer offered a 401(k) with a match, but a friend swore the Roth IRA was "free money forever." I didn't understand how they were different, so I did nothing for almost a year — which, looking back, was the most expensive mistake of all.Here's what I wish someone had told me plainly: it's usually not either/or. A 401(k) and a Roth IRA are taxed in opposite directions, and the smartest move for most people is to use both in a specific order. Let me break down exactly how each works, the 2026 rules, and which one to put your money in first.

The Short Answer

• A 401(k) is a workplace retirement plan. You contribute pre-tax money (lowering your taxable income now), it grows tax-deferred, and you pay tax when you withdraw in retirement. Many employers match part of your contributions.
• A Roth IRA is an individual account you open yourself. You contribute after-tax money (no tax break today), but it grows tax-free, and you pay zero tax on qualified withdrawals in retirement.
• The core difference: when you pay tax. A 401(k) taxes you later; a Roth IRA taxes you now and never again.
• Which first? For most people: contribute to your 401(k) up to the full employer match, then max a Roth IRA, then go back and add more to the 401(k).

What is a 401(k)?

A 401(k) is an employer-sponsored retirement plan. Money comes straight out of your paycheck before taxes, which lowers your taxable income for the year, and it grows tax-deferred until you take it out. The biggest perk is the employer match — many companies add money to your account based on what you contribute, which is essentially free money you shouldn't leave behind.The trade-off comes later: withdrawals in retirement are taxed as ordinary income, and you generally must start taking required minimum distributions (RMDs) once you reach the required age. For 2026, you can contribute up to $24,500 to a 401(k) ($8,000 more if you're 50 or older).

What Is a Roth IRA?

A Roth IRA is an individual retirement account you open on your own through a brokerage — no employer needed. You fund it with money you've already paid tax on, so there's no deduction today. In exchange, your money grows completely tax-free, and qualified withdrawals in retirement are 100% tax-free. There are also no required minimum distributions, so your money can keep growing untouched for as long as you like.Two catches to know: the 2026 contribution limit is lower at $7,500 ($1,100 more if you're 50+), and there are income limits — for 2026, your ability to contribute directly phases out for single filers with modified adjusted gross income between $153,000 and $168,000.

401(k) vs Roth IRA: Side-by-Side

The Biggest Difference: Taxes Now vs Taxes Later

This is the whole ballgame. A traditional 401(k) gives you the tax break today and taxes you in retirement. A Roth IRA does the opposite: no break now, but tax-free later.So which wins? It comes down to whether your tax rate will be higher now or in retirement. If you expect to be in a higher tax bracket later (common for younger workers early in their careers), the Roth's tax-free withdrawals are hugely valuable. If you're a high earner now expecting a lower rate in retirement, the 401(k)'s upfront deduction may be worth more. Honestly, for most people, the future is unknowable — which is exactly why owning both gives you tax flexibility down the road.

401(k) vs Roth 401(k): Don't Confuse These

Here's where people get tangled up. Many employers now offer a Roth 401(k) alongside the traditional one. A Roth 401(k) is still a workplace plan with the high $24,500 limit and possible employer match — but it's funded with after-tax dollars like a Roth IRA, so withdrawals are tax-free. Think of it as the best of both: Roth tax treatment with 401(k) contribution limits and no income cap.The short version: "traditional vs Roth" is about when you're taxed; "401(k) vs IRA" is about where the account lives (work vs on your own). A Roth 401(k) mixes the Roth tax treatment with the workplace account.

Is a Roth IRA Better Than a 401(k)?

Neither is universally "better" — they do different jobs. A Roth IRA wins on tax-free growth, flexibility, wider investment choices, and no RMDs. A 401(k) wins on the employer match, much higher contribution limits, and an upfront tax break. The employer match alone usually makes the 401(k) the first place your money should go, because it's an instant 50–100% return you can't get anywhere else. After that, the Roth IRA's tax-free growth makes it the ideal second stop.

Which Should You Contribute to First? (The Order That Works)

For most people, here's the priority order that squeezes the most out of every dollar:

1. 401(k) up to the full employer match. This is free money — never leave it on the table.
2. Max out a Roth IRA ($7,500 in 2026). Tax-free growth and flexibility make this your next best dollar.
3. Go back to the 401(k) and increase contributions toward the $24,500 limit.
4. Aim for 10–15% of your income total across these accounts over time.

If your employer offers no match, you can flip steps 1 and 2 and start with the Roth IRA for its flexibility. And if you earn too much to contribute to a Roth IRA directly, a Roth 401(k) (no income limit) is a great alternative.

Not sure what your match is worth? Read our guide on how a 401(k) employer match works to make sure you're capturing every dollar before moving on to a Roth IRA.

See How Your Retirement Savings Grow

The real magic in either account is decades of compounding — so the sooner you start, the less you actually have to contribute.

Use our Retirement Calculator to project how your 401(k) and IRA contributions grow over time, and see whether you're on track for the retirement you want.