If you’ve ever Googled this question, you’ve probably ended up more confused than when you started. Financial advice on this topic tends to be either too simple (“just max out your 401k!”) or too complicated (17-step flowcharts that assume you have a finance degree).
Here’s the straightforward answer: use both — but in a specific order.
I’ve personally had a traditional 401k, a Roth 401k, a Roth IRA, and a traditional IRA at different points in my life. Each one has a place. But when you’re starting out and money is limited, the order you fund them matters a lot.
Let me break it down.
If you’re completely new to investing, start with our guide on how to start investing with little money first.
What’s the Difference Between a Roth IRA and a 401k?
Both are retirement accounts that help your money grow. The main difference is when you pay taxes.
A 401k is offered through your employer. You contribute pre-tax dollars — meaning the money comes out of your paycheck before taxes, which lowers your taxable income today. You pay taxes when you withdraw the money in retirement.
A Roth IRA is an account you open yourself, completely independent of your employer. You contribute after-tax dollars — meaning you pay taxes now. But when you withdraw the money in retirement, it’s completely tax-free. Every dollar of growth, tax-free.
A Roth 401k is the best of both worlds — it’s offered through your employer like a traditional 401k, but it works like a Roth IRA tax-wise. Not every employer offers this, but if yours does, it’s worth considering.
The Priority Order I Actually Follow
Here’s the exact order I recommend for most beginners:
Step 1 — Contribute to your 401k up to the employer match
If your employer matches your contributions, this is the single best investment you can make. A 50% or 100% match is an instant return on your money that no stock or index fund can compete with. I contribute exactly enough to get my full employer match — not a dollar more at this stage.
Step 2 — Open and max out a Roth IRA
After getting the full employer match, the next best move for most beginners is a Roth IRA. In 2026 you can contribute up to $7,000 per year ($583/month). The tax-free growth over decades is incredibly powerful, and you have more investment options than a typical 401k.
Step 3 — Go back and contribute more to your 401k
Once your Roth IRA is maxed, put any additional retirement savings back into your 401k up to the annual limit ($23,500 in 2026).
Why I Prioritize the Roth IRA in Step 2
Most 401k plans have limited investment options — whatever funds your employer chose. A Roth IRA gives you complete freedom to invest in whatever index funds, ETFs, or stocks you want.
It also has a unique flexibility that most people don’t know about: you can withdraw your contributions (not earnings) at any time without penalty. This makes it a powerful savings vehicle that doubles as a safety net in genuine emergencies.
Roth vs Traditional: Which Tax Treatment Is Better?
This depends on one thing: do you expect to be in a higher or lower tax bracket in retirement?
If you’re young and early in your career, you’re probably in a lower tax bracket now than you will be later. That makes Roth accounts especially attractive — you pay taxes now at a lower rate and enjoy tax-free withdrawals later when your rate would be higher.
If you’re in your peak earning years, a traditional 401k might make more sense since the tax deduction today is more valuable.
For most beginners reading this? Go Roth.
What If You Can Only Afford One?
If money is tight and you can only do one thing, this is my recommendation:
Get your full employer 401k match first — always. That free money is too good to leave on the table.
After that, if you can only afford one more account, open a Roth IRA. The flexibility, tax-free growth, and investment freedom make it the best long-term choice for most people starting from scratch.
How to Open a Roth IRA
Opening a Roth IRA takes about 10 minutes. You can open one through Webull — it’s commission-free, has no account minimums, and lets you buy fractional shares so you can start investing with as little as $1.
You can also read our guide on how to start investing with little money for more beginner tips.
Once it’s open, set up a recurring monthly deposit — even $50/month is a great start. Then invest in a simple S&P 500 index fund and leave it alone.
The Bottom Line
You don’t have to choose between a Roth IRA and a 401k. Use both — just in the right order:
- 401k up to the employer match
- Max out your Roth IRA
- Back to the 401k for any additional savings
The best time to start was yesterday. The second best time is right now.
This article is for informational purposes only and does not constitute financial advice. Always consult a qualified financial professional before making investment decisions.
