Which Account Do You Open First? Taxable Brokerage vs. Roth IRA vs. 401k

Key takeaways

Employer match is a guaranteed instant return: Contributing to your 401k up to the employer match is the single highest-return move in personal finance, skipping it costs a calculable, specific amount.
Roth IRA is the right second step for most people in their 20s: Tax-free growth on decades of compounding is unusually valuable when your current tax rate is near its lifetime low.
The order of accounts matters as much as the amount you invest: Funding accounts in the wrong sequence can cost you six figures over 30 years, not because of bad investments, but because of avoidable taxes and forfeited match money.
Three exceptions change the default stack: High income, high-fee 401k funds, or no employer match each shift the order, the flowchart routes you to the right answer for your situation.
One broad low-cost fund inside the right account is enough: Choosing between VOO and VTI matters far less than opening the account and automating a monthly contribution.

You’ve decided to start investing. Good. Now the first question hits: where do I actually put the money?

Most articles answer that with a feature comparison table and a shrug. This one won’t. For most 22–30 year olds with a full-time job and an employer match, the order is:

401k, up to your employer match
Roth IRA (Individual Retirement Account), up to the $7,000 annual limit
401k, beyond the match, up to the $24,500 annual limit
Taxable brokerage, anything left over

That’s the default stack. Follow it and you’ll extract the most compounding from every dollar you invest.

One condition changes everything: if your employer offers no 401k, skip step one. Your first account is a Roth IRA.

There are a few other exceptions, high income, a 401k with expensive fund options, no employer match at all. The flowchart below routes you to the right answer for your situation. But if you’re a salaried employee in your 20s with a company retirement plan, the stack above is almost certainly right for you. Read on for the why.

What Each Account Actually Is (In Plain Language)

Before the order makes sense, you need to know what you’re ordering.

The 401k

A 401k is a retirement account your employer sponsors. Your contributions come out of your paycheck before taxes are taken out. That means a $200 contribution only reduces your take-home pay by roughly $150 if you’re in the 22% tax bracket, the government is effectively subsidizing part of your contribution.

The employer match is the part that changes the math completely. A match means your employer adds money to your account when you contribute. If your employer matches 50% of your contributions up to 6% of your salary, and you earn $60,000 a year, that’s up to $1,800 in free contributions per year. Your employer puts in $1,800 just because you put in $3,600. No investment in the world offers a guaranteed 50% return on day one.

The trade-off: your fund options are limited to whatever your employer’s plan offers. You can’t pick any ETF (exchange-traded fund, a basket of stocks that trades on an exchange like a single share) you want. You pick from a menu.

The IRS sets the annual contribution limit for 401k employee contributions at $24,500 in 2026.

The Roth IRA

A Roth IRA is an account you open yourself, at a broker of your choice. You fund it with money that has already been taxed, your normal take-home pay. The payoff comes later: every dollar that grows inside a Roth IRA is tax-free when you withdraw it in retirement. No taxes on the gains. None.

For someone in their 20s who expects to earn more, and pay more in taxes, later in life, that tax-free growth is unusually valuable. You pay taxes now, at your current lower rate, and never pay taxes on the growth again.

The 2026 contribution limit is $7,500 per year for individuals under age 50. There’s also an income limit: the Roth IRA phase-out, the income range above which your contribution limit starts shrinking, begins at $153,000 for single filers in 2026 and cuts off completely at $168,000. If you earn under $153,000, you can contribute the full $7,500. If you earn over $168,000, you can’t contribute directly at all. There’s a workaround; more on that in the exceptions section.

You control the fund selection entirely. That’s a meaningful advantage over a 401k.

The Taxable Brokerage Account

A taxable brokerage account has no contribution limits and no special tax treatment. You can put in as much as you want, whenever you want, and withdraw whenever you want. Total flexibility.

The cost of that flexibility is a tax bill. You pay taxes on dividends, payments some companies make to shareholders, each year. You also pay capital gains tax, a tax on the profit when you sell an investment for more than you paid, when you sell. The rate depends on how long you held the investment and your income.

As Investor.gov explains in its overview of investment accounts, a taxable brokerage account is a standard investment account with no government-granted tax advantages attached to it.

The one-sentence summary: a 401k and Roth IRA give you tax advantages in exchange for rules about when and how much you can contribute. A taxable brokerage gives you total flexibility in exchange for a tax bill every year.

Why the Order Matters More Than the Amount

Here’s where most “account comparison” articles stop. They list the features and leave you to figure out the order yourself. That’s the wrong place to stop.

The order you fund these accounts in is itself a compounding accelerator. Getting it wrong doesn’t just cost you a little, it costs you a specific, calculable amount.

The cost of skipping your employer match

Say you earn $60,000 a year. Your employer matches 50% of your contributions up to 6% of your salary. That’s $1,800 per year in free money, your employer’s contribution, on top of yours.

Now say you skip the 401k and put $200 a month into a taxable brokerage account instead. You’re investing, which is good. But you’re forfeiting $1,800 a year in employer contributions.

What does $1,800 a year, compounded at 7% annually, add up to over 30 years? Approximately $181,000.

That’s not $181,000 in contributions. That’s $181,000 in total account value, the match money plus the decades of growth it generated. You forfeited that by choosing the wrong account first.

This is the most common regret in beginner investing communities. “I let my parents convince me to skip my company’s 401k for three years” is a real thing people write, and the math shows exactly why it stings. The employer match is the one place in personal finance where you get a guaranteed, immediate return before the market does anything at all.

The Roth IRA’s tax-free compounding

The Roth IRA’s advantage is subtler but compounds the same way. Tax-free growth over 30 years on $7,500 a year is meaningfully different from taxable growth on the same amount. You’re not just saving on taxes, you’re keeping the money that would have gone to taxes inside the account, where it keeps compounding.

The order isn’t arbitrary. It’s the sequence that extracts the most compounding from every dollar you invest.

💡 See the numbers move. The employer-match example above shows what $1,800/year does over 30 years. Now imagine what your monthly contribution does, starting today versus starting in five years. Use the Compounding + DCA (dollar-cost averaging, investing a fixed amount on a regular schedule regardless of what the market is doing) Snowball Calculator to move the “start at 25 vs. start at 35” slider and watch the gap open up. That gap is the cost of waiting. The account you open first determines which tax environment that compounding happens in.

The Decision Flowchart: Which Account Is First for You

Most 22–30 year olds with a full-time job land on the left path below. Follow your branch.

START HERE
│
▼
Does your employer offer a 401k with a match?
│
├── YES ──► Contribute to your 401k first, up to the full match.
│           Then go to Question 2.
│
└── NO ───► Go to Question 2.
            (If you have NO 401k access at all, self-employed,
            gig worker, employer doesn't offer one, your first
            account is a Roth IRA. Full stop. Skip to Question 2.)

QUESTION 2
│
▼
Is your income under the Roth IRA phase-out limit?
($153,000 for single filers / $242,000 for married filers in 2026)
│
├── YES ──► Open a Roth IRA. Contribute up to $7,500 in 2026.
│           Then go to Question 3.
│
└── NO ───► Go to Question 3.
            (See the exceptions section, the backdoor Roth IRA
            may apply to you.)

QUESTION 3
│
▼
Have you maxed your Roth IRA ($7,500 in 2026)?
│
├── YES ──► Go back to your 401k. Contribute up to the
│           $24,500 annual employee limit.
│           Still have money left? ──► Taxable brokerage.
│
└── NO ───► Keep contributing to your Roth IRA until you hit $7,000.

If you land on the left path, employer match, income under $153,000, Roth IRA open, you’re following the default stack. That’s where most people in this age range land.

If you land on the right path at any question, the exceptions section below covers your situation specifically.

The Exceptions (And When They Actually Apply)

The default stack is right for most people. These three situations change it.

Exception 1: Your income is above the Roth IRA phase-out

If you earn more than $168,000 as a single filer in 2026, you can’t contribute directly to a Roth IRA. There’s a workaround called the backdoor Roth IRA, a two-step process where you contribute to a traditional IRA (funded with after-tax dollars, no income limit) and then convert it to a Roth IRA. The result is the same tax-free growth, with more steps.

The backdoor Roth adds complexity. It also has a wrinkle called the pro-rata rule that can create an unexpected tax bill if you have other traditional IRA money. We cover the full mechanics in a separate piece. For now: if you’re above the phase-out, the backdoor Roth is your path, not a direct contribution.

Exception 2: Your 401k has high-fee fund options

You might think that since your 401k has limited fund options, you should skip it entirely and go straight to a Roth IRA where you control the selection. That’s usually the wrong call, here’s the one case where it isn’t.

If your 401k’s cheapest fund has an expense ratio, the annual fee a fund charges, expressed as a percentage of your investment, above 0.5%, the fee drag is real. In that case: contribute to your 401k up to the employer match (the free money still wins), then put the rest into your Roth IRA. You get the match, and you get to choose your own low-cost funds for the bulk of your contributions.

If your 401k has no employer match AND high-fee funds, the Roth IRA becomes your first account, full stop.

Exception 3: Your employer offers no match at all

A 401k without a match is still useful, your contributions reduce your taxable income today, which has real value. But the Roth IRA’s flexibility gives it an edge for most people in their 20s. You can withdraw your contributions (not the earnings, just the money you put in) from a Roth IRA before retirement without penalty. That’s a safety valve a 401k doesn’t offer.

If there’s no match, open the Roth IRA first. Contribute up to $7,500. Then go back to the 401k for the tax deduction if you have more to invest.

The decision rule: if you’re unsure which exception applies to you, the default stack is almost certainly right. The exceptions are edge cases, not the norm.

How to Actually Open Each Account (The Steps, Not the Theory)

Opening your 401k

You don’t open a 401k at a broker. You enroll through your employer. Log into your company’s HR portal or benefits platform and look for a section called “Benefits,” “Retirement,” or “401k Enrollment.” The most common plan providers are Fidelity, Vanguard, and Empower. Your employer chose the provider; you don’t pick it.

Once you’re in, you’ll make two decisions:

Your contribution percentage. This is the share of each paycheck that goes into the account. Set it to at least the percentage your employer matches, if they match up to 6% of your salary, contribute at least 6%. That’s the floor.
Your fund selection. You’ll see a list of funds your plan offers. Look for the fund with the lowest expense ratio, usually a target-date fund or a broad index fund. We cover how to evaluate 401k fund options in a separate piece.

The automation is built in. Your contribution comes out of every paycheck automatically. You set the percentage once and it runs.

Opening a Roth IRA

You open a Roth IRA yourself, at a broker. For beginners, Fidelity and Schwab are the two recommended starting points, for a full comparison of both platforms, see our best brokerage accounts for beginners guide. Both have no account minimums, both support fractional shares (buying a partial share of a stock or ETF when you can’t afford a full one), and both have strong educational resources built into the platform.

Here’s what you’ll see when you open a Roth IRA at Fidelity:

Account type selection. Choose “Roth IRA” from the account type menu.
Personal information. Name, address, Social Security number, employment status.
Funding method. You’ll link a checking or savings account. Fidelity will make two small test deposits to verify the account, this takes 1–3 business days.
Beneficiary designation. Name who inherits the account if something happens to you. Don’t skip this step.
Initial contribution. You can start with as little as $1 at Fidelity.

Once the account is open, set up a recurring transfer from your checking account. In Fidelity’s interface, look for “Automatic Investments” or “Recurring Contributions” under the account settings. Choose a date that lines up with your paycheck, the day after payday works well. Set the amount. That’s your automation.

Opening a taxable brokerage account

The process at Fidelity or Schwab is nearly identical to opening a Roth IRA, same personal information, same funding method, same beneficiary step. The account type you select is “Individual Brokerage Account” or “Taxable Brokerage Account.”

The key difference shows up at tax time. A taxable brokerage account generates two tax forms you’ll need to file:

1099-DIV: reports dividends your investments paid out during the year
1099-B: reports any gains or losses from investments you sold during the year

Your broker sends these automatically. You (or your tax software) use them to report investment income on your return.

For automation in a taxable brokerage, look for “Automatic Investments” or “Recurring Purchase” in the account settings. Set a monthly amount and a date. The mechanics are the same as the Roth IRA recurring transfer.

What to Put Inside the Account Once It’s Open

You’ve opened the account. Now the follow-on question arrives: what do I actually buy?

For most beginners, start with one of two funds.

VOO, the Vanguard S&P 500 ETF (exchange-traded fund, a basket of stocks that trades on an exchange like a single share), owns a slice of the 500 largest US companies in a single fund. Its expense ratio, the annual fee the fund charges, expressed as a percentage of your investment, is 0.03% according to Morningstar’s fund data. For every $10,000 you invest, you pay $3 a year in fees. That’s not a typo.

VTI, the Vanguard Total Stock Market ETF, owns a slice of essentially every publicly traded US company, not just the largest 500. Its expense ratio is also 0.03%.

For most beginners, pick one of these two and stop optimizing. VOO gives you the 500 largest companies. VTI gives you a slightly broader slice of the market. The difference in long-term outcomes is small. The account type and the automation matter more than which of these two you choose.

A note on these fund examples: VOO and VTI are named here as educational examples of broad, low-cost index funds, not as personalized recommendations for your specific situation. We are not a registered investment advisor. This is educational content, not personalized financial advice. The account types, contribution limits, and fund examples described in this piece are accurate as of 2026. Contribution limits change annually, so verify current limits at the IRS retirement plans and IRAs page before contributing.

For a deeper look at how to evaluate funds, and to see what consistent monthly contributions into your new account look like over 30 years, the fund selection guide and the Compounding + DCA Snowball Calculator are the next stops.

The account you open first is not a small decision. It determines which tax environment your compounding happens in, whether you capture free employer money, and how much flexibility you have if life gets complicated. The default stack, 401k to match, then Roth IRA, then back to 401k, then taxable brokerage, is the right answer for most people reading this. Follow the flowchart, open the account, set the recurring contribution, and stop second-guessing it. The best investing decision you can make today is the one you actually make.