401(k) vs IRA vs Roth: The Order I’d Fund Accounts In

Here’s the order, up front, so you can argue with it while you read:

1. 401(k) up to the full employer match.
2. High-deductible health plan? HSA next.
3. Roth IRA (or traditional IRA, depending on your bracket).
4. Back to the 401(k) until you hit the annual limit.
5. Taxable brokerage account.

That’s it. That’s the whole post in five lines. Everything below is the reasoning — why the match outranks everything, why the Roth IRA beats the rest of the 401(k) for most people in their early years, and the handful of exceptions where the order flips. I’m not a financial advisor and this isn’t financial advice; it’s the decision tree I’d hand a friend, with the reasons attached so you can disagree with specific steps instead of the whole thing.

Step 1: The Match, Because Nothing Else Is a 100% Instant Return

An employer match is the only investment in personal finance where the return is fixed and immediate. If your company matches 100% of contributions up to 4% of salary, and you earn $60,000, then every dollar you contribute up to $2,400 gets doubled before it’s even invested. You made 100% on day one. No fund in existence reliably does that, in any market, guaranteed by contract.

Run the same example over a career: contribute $2,400, get $2,400 free, every year for 30 years. If that combined $4,800 per year compounds at a hypothetical 7% average annual return, it grows to roughly $453,000 — and about half of it ($226,700) was the match, not your money. (Check my arithmetic if you want: $4,800 a year for 30 years at 7% is $4,800 × 94.46, where 94.46 is the future-value factor [(1.07^30 − 1) ÷ 0.07]. The match alone — $2,400 × 94.46 — is about $226,700.)

Skipping the match to chase a better account type is the single most common ordering mistake I see. Whatever else you do with your money this year, this step comes first. If your plan’s investment menu is mediocre, fine — pick the cheapest target-date option and move on. You can fix the fund choice later; you can’t retroactively collect a match you didn’t earn.

The vesting footnote

One caveat so the match isn’t oversold: some employers’ matches vest over time — you might keep a percentage of the match only after 2-3 years of service. That still doesn’t change the order, because most of us stay at jobs longer than vesting periods. It just means the “free money” becomes fully yours on a schedule. If you’re certain you’re leaving within a year, the match is still usually worth it; check your plan’s vesting schedule and do the math for your actual timeline.

Step 2: The HSA, If You Qualify — and Only If You’ll Use It Right

The HSA is the only account with three tax advantages instead of one: money goes in pre-tax (or deductible), grows untaxed, and comes out untaxed for qualified medical expenses. After 65 you can spend it on anything, paying only ordinary income tax — at which point it behaves like a traditional IRA. I explain the mechanics, the invest-versus-spend decision, and the receipt strategy in the HSA post, so here I’ll only say: if you’re on a high-deductible health plan and you can pay your current medical bills out of pocket, the HSA usually slots in right after the match.

It ranks above the IRA for a structural reason: IRAs give you one tax advantage (deduction now or tax-free growth later). The HSA gives you all of them, plus it’s the only account where a dollar can realistically avoid federal tax three separate times across its life. That’s not marketing; it’s the tax code’s literal design.

Step 3: Roth IRA — the Workhorse of Your First Decades

After the match and (if applicable) the HSA, the Roth IRA is where I’d put the next dollars, and the reasoning is about time, not returns. If you’re decades from retirement, the money you contribute at 25-35 is the money that will experience the most compounding, and paying tax on it now — while your bracket is likely lower than it’ll be later — means that growth is never taxed again.

There’s a full worked example in Roth IRA for beginners (contribute $7,000 a year from 25 to 65 at a hypothetical 7% average return and you’re looking at a roughly $1.4 million pot from $280,000 of contributions, with the growth entirely tax-free). The Roth’s other advantages are practical: you can withdraw your contributions (not earnings) at any time penalty-free, which makes it a strange-but-real last-resort layer of flexibility; and there are no required minimum distributions during your lifetime, which matters for later tax planning more than people expect.

Roth vs. traditional IRA — the one-line rule

Roth when you expect your future bracket to be at or above your current one; traditional when you expect it to be lower. Early-career savers usually fit the first case, which is why the Roth dominates this slot for most people in their twenties and thirties. There are income limits — for 2025 the Roth contribution phase-out runs roughly $150,000-$165,000 of modified AGI for single filers and $236,000-$246,000 for married filing jointly — and above them the workaround is the backdoor Roth, which I’ll mention but not belabor: it’s a two-step contribution-conversion that most people with above-limit incomes use, and it has a pro-rata wrinkle if you already hold pre-tax IRA money. It’s a later-stage problem; don’t let it distract step 3.

Step 4: Back to the 401(k), Up to the Limit

Once the IRA’s annual contribution is maxed ($7,000 in 2025, plus $1,000 catch-up at 50+), everything else goes back into the 401(k) until you hit the employee deferral limit ($23,500 in 2025). Why come back at all after “graduating” to an IRA? Because the 401(k) has a much higher ceiling, and filling it is the fastest legal way to shield large sums from current-year taxes. Also, if your income is drifting toward the IRA deduction phase-outs, the 401(k) keeps working at incomes where IRA deductions start to fade.

The plan’s fund selection matters here. If the menu is a wall of high-fee funds, use the cheapest broad index option available and revisit annually. Many plans now offer a low-cost target-date fund, which for a lot of people is a perfectly good default — I wrote honestly about their real pros and cons in target-date funds: the set-and-forget option.

Step 5: The Taxable Account — the Most Flexible Money You’ll Own

Everything after the limit goes to a regular brokerage account, and I’d stop framing it as “last place.” Taxable accounts are the least tax-advantaged and the most flexible: no withdrawal restrictions, no age gates, no qualified-expense rules. Every dollar here is available for the life you’re building before 59½ — which matters more the more seriously you take the idea that freedom shouldn’t have to wait for a retirement date. My whole framework for the number you’re actually aiming at is in how to calculate your financial freedom number, and a good chunk of that money will live in exactly this kind of account.

The Exceptions That Genuinely Change the Order

Five situations where I’d reshuffle, and none of them are exotic:

• High-interest debt (roughly 8%+): a guaranteed 22% “return” from paying off a credit card beats everything except the match. Keep contributing only to the match, then attack the debt.
• No emergency fund at all: a Roth’s withdraw-your-contributions feature lets you double-duty a Roth IRA as a backstop, but only if you’re disciplined about it — earnings withdrawals aren’t free, and raiding it kills compounding.
• Very low current income: if you’re in the 0-12% bracket, the traditional IRA’s deduction may matter less than the Roth’s tax-free growth; low brackets are the cheapest time to pay tax on contributions.
• Self-employed with real profit: SEP-IRAs, Solo 401(k)s, and the like can dwarf everything above with much higher contribution room. The order bends to the account with the bigger ceiling.
• Your company match is stock, or bad funds, or has weird vesting: still take it, but this is where the tree gets personal and worth an hour with a fee-only advisor if your situation is genuinely complicated.

The Honest Part: The Order Matters Less Than the Automation

Here’s my confession as a person who has written the word “match” too many times: someone who puts 15% of income into a mediocre 401(k) in the wrong order will beat someone who read every Roth-vs-traditional argument ever written and automated nothing. The ordering rules exist to squeeze the last few percent of efficiency out of a system that’s already 95% built by one habit — money moves to investments before you can spend it.

So if you take one action from this post, don’t take “research backdoor Roths.” Take: log into payroll, find the match percentage, and set your contribution to at least that number today. Then put the next step — the IRA, the HSA, the rest — on next month’s list. The sequence is a map, not a gate.