Roth IRA vs. 401(k): The Complete 2026 Comparison

It's usually not either/or. A 401(k) is an employer plan (any income, $24,500 deferral, plus the match); a Roth IRA is a personal account (income-capped, $7,500/$8,600, tax-free growth). They have separate limits, so most savers use both — the practical question is the funding order, not the choice.

Run your own numbers. The Roth vs. Traditional calculator models the tax-timing side of this decision; this page maps the full workplace-plan-vs-personal-account landscape and how to use both.

Roth IRA or 401(k) — which should you choose?

The framing that dominates search results — "Roth IRA vs. 401(k), pick one" — is mostly a category error. These accounts don't compete for the same dollar:

• Different access. The 401(k) only exists if your employer sponsors a plan; the Roth IRA is yours to open regardless of where (or whether) you work.
• Different, stacking limits. In 2026 you can defer up to $24,500 into a 401(k) and separately contribute up to $7,500 to a Roth IRA ($8,600 if you're 50 or older). The limits are independent — maxing one doesn't touch the other.
• Different gatekeeping. A 401(k) has no income limit to contribute at all. A Roth IRA phases out by modified AGI: Single/Head of Household $153,000–$168,000, Married Filing Jointly $242,000–$252,000, and Married Filing Separately a punishing $0–$10,000. Above the top of your range, direct Roth IRA contributions are off the table — but the 401(k) door stays open.

Because the buckets don't offset, a common approach is to use both and let order do the work: capture the full employer match first (it's compensation you forfeit otherwise), then layer on a Roth IRA and the rest of the 401(k). We map that funding sequence below, along with the features only a 401(k) has (loans, the Rule of 55, mega backdoor Roth, ERISA creditor protection) and the ones that make a Roth IRA worth opening early (an open investment menu, no lifetime RMDs, its own five-year clock).

One thing this page deliberately doesn't relitigate: the pure Roth-vs-pre-tax tax-timing question — pay tax now or later. That decision turns on your marginal rate today versus your blended rate in retirement, and it deserves its own treatment. Here, the spotlight is the structural divide between a workplace plan and a personal account, and how to use both.

What are the four account types you're actually choosing between?

"Roth IRA vs. 401(k)" sounds like a choice between two boxes. It isn't. You're really navigating a 2x2 grid, and naming all four cells is the fastest way to stop comparing apples to oranges.

Two questions define the grid. First, when do you pay the tax? A pre-tax (traditional) account takes the deduction now and taxes every dollar on the way out. A Roth account takes after-tax money in and pays nothing on qualified withdrawals later. Second, where does the account live? An employer plan is sponsored by your workplace; a personal IRA you open yourself at a broker. Cross those two axes and you get four accounts:

• Traditional 401(k) — pre-tax money, employer plan.
• Roth 401(k) — after-tax money, employer plan.
• Traditional IRA — pre-tax money, personal account.
• Roth IRA — after-tax money, personal account.

The vertical axis — the tax-timing call between pre-tax and Roth — is the same decision whether you're inside a 401(k) or an IRA. Because that question has its own deep mechanics (marginal rate today vs. effective rate in retirement), this page hands it off; we cover it in full in the Roth-vs-traditional comparison. What this page focuses on is the horizontal axis: what changes when the same tax treatment sits inside a workplace plan instead of a personal account. That's where the substantive differences live — contribution ceilings, employer matching, creditor protection, loans, the investment menu, vesting, and rollover mechanics.

One cell trips people up. The Roth 401(k) is a designated Roth account inside the workplace plan — after-tax dollars, tax-free qualified growth, but governed by 401(k) rules, not IRA rules. Critically, it has no income limit to contribute. A Roth IRA cuts off high earners (the 2026 MAGI phase-out runs $153,000–$168,000 single / $242,000–$252,000 married filing jointly), but you can fund a Roth 401(k) at any income. Same "Roth" label, very different gatekeeping. The detailed Roth 401(k) mechanics — five-year clocks, the pre-tax match bucket, and post-2024 RMD changes — get their own dedicated page.

Keep the four cells in mind as you read; the matrix below is the spine of everything that follows. And note the framing throughout: this is general education about how the accounts differ, not a recommendation about which belongs in your plan.

Is there an income limit on a 401(k) like there is on a Roth IRA?

No. This is the single biggest structural difference between the two accounts, and the one most people get wrong. A 401(k) has no income limit to contribute — Traditional or Roth. You can earn $80,000 or $800,000 and still defer up to the $24,500 elective limit (2026), with no phase-out and no high-earner cutoff. A Roth IRA is the opposite: your ability to contribute at all is gated by income.

For 2026, the Roth IRA contribution phase-out runs by modified adjusted gross income (MAGI):

• Single / head of household: $153,000–$168,000 (full contribution below, none above)
• Married filing jointly: $242,000–$252,000
• Married filing separately: $0–$10,000 (not indexed; nearly always phased out)

The two caps do fundamentally different things, and conflating them is the root of the confusion. The Roth IRA limit controls who is allowed to contribute — cross the top of the range and your direct contribution drops to zero. A 401(k)'s limit is just a ceiling on how much you can put in; it never decides whether you're eligible. There is no MAGI test for plan deferrals at any income level.

The myth: high earners can't get Roth money

A common belief is that once you're over the Roth IRA income line, tax-free retirement savings is off the table. It isn't. Being phased out of a direct Roth IRA leaves at least three Roth paths open:

• The Roth 401(k) — the designated Roth bucket inside your workplace plan. Same $24,500 deferral limit, no MAGI gate. This is precisely why the Roth 401(k) is attractive to high earners: it's the only way many of them can put new money directly into a Roth without extra maneuvering.
• The backdoor Roth IRA — a nondeductible Traditional IRA contribution followed by a conversion, which sidesteps the income cap entirely.
• The mega backdoor Roth — if the plan permits after-tax contributions plus in-plan conversion, total additions can be pushed toward the $72,000 annual cap as Roth dollars, far beyond the $24,500 deferral.

So the Roth IRA income limit is real, but it's a limit on one specific account, not on Roth saving in general. For the exact figures, see the Roth IRA income-eligibility and MAGI phase-out details; for the workaround when you're over the line, see the backdoor Roth IRA explainer.

How does the employer match work — and is it tax-free?

The match is the single best argument for funding a 401(k) before anything else. It is, quite literally, free money: an employer contribution you earn just by deferring some of your own pay. A common formula is a full match on the first 3% of salary plus half on the next 2% — but formulas vary, and many savers contribute at least enough to capture the entire match before sending a dollar anywhere else. Leaving match on the table is leaving compensation on the table.

Here is the part most comparison pages skip. A traditional employer match is pre-tax, and it stays pre-tax even when your own deferrals go into the Roth side of the plan. It lands in a separate pre-tax bucket, grows tax-deferred, and is taxed as ordinary income when you withdraw it — along with all of its growth. So a "Roth 401(k)" account often has two tax characters living under one plan: your Roth deferrals (tax-free in retirement) and the employer match (taxable later).

This corrects a widespread myth: a Roth 401(k) match is not automatically tax-free. Believing all of your Roth 401(k) money comes out untaxed can throw off retirement-income planning by a meaningful margin, because the match-and-growth slice is still fully taxable.

The new optional Roth match (SECURE 2.0 §604)

There is now an exception. SECURE 2.0 §604 lets a plan offer employees the choice to take the employer match (and nonelective contributions) as Roth instead of pre-tax. The catches:

• It's optional. The plan has to add the feature, and adoption is still uncommon — most plans have not turned it on.
• It's immediately 100% vested when contributed as Roth, regardless of the plan's normal vesting schedule.
• It's taxable to you in the year it's contributed. You pay income tax now on the match amount; in exchange, that money and its growth come out tax-free later.
• It's reported on Form 1099-R (code G), not your W-2. Expect a separate tax form for the Roth-elected match.

A Roth IRA, by contrast, has no employer match at all — there is no employer in the picture. The match is a workplace-plan feature, full stop, and it's one of the clearest reasons the 401(k) earns the first dollars.

How much can you put in each for 2026 (and the three catch-up rules)?

The two accounts sit on entirely separate limits, and that is the first thing to get straight: contributing to one does not eat into the other. For 2026 you can put up to $24,500 into a 401(k), 403(b), or governmental 457(b) as your own elective deferral, and up to $7,500 into a Roth IRA ($8,600 if you're 50 or older, which folds in a $1,100 catch-up). Max both and a saver under 50 is sheltering $32,000 across the two — the limits are additive, not shared.

That $24,500 is only your slice. The §415(c) cap on total annual additions to a 401(k) — your deferrals plus the employer match plus any after-tax contributions — is $72,000 for 2026 (up from $70,000 in 2025), with catch-up contributions stacking on top of that. The gap between $24,500 and $72,000 is the room that makes the mega backdoor Roth possible (covered later); the Roth IRA has no equivalent employer or after-tax layer.

The three catch-up regimes

• Standard age-50 catch-up. Turn 50 by year-end and your 401(k) deferral limit rises by $8,000, to $32,500 total.
• Ages 60–63 "super catch-up." Under SECURE 2.0 §109, in the year you're 60 through 63 the catch-up jumps to $11,250 instead of $8,000, lifting your 401(k) deferral limit to $35,750. It reverts to the standard catch-up at 64.
• The §603 Roth catch-up rule (new pressure for 2026). If your prior-year FICA wages from that same employer exceeded the indexed threshold, your catch-up can no longer go in pre-tax — it must be made as a Roth (after-tax) contribution. The statute set the floor at $145,000; the figure indexes in $5,000 steps, and the threshold that governs the 2026 determination — based on your 2025 W-2 wages — is $150,000. The earlier IRS administrative transition relief lapsed after 12/31/2025, so plans are generally expected to begin applying the rule for 2026 under a reasonable, good-faith reading of the statute; the final regulations themselves apply to contributions in taxable years beginning after December 31, 2026 (with a later date for certain governmental and collectively bargained plans). The rule reaches only elective-deferral catch-ups — not SEP or SIMPLE employer contributions, and not the self-employed, who have no FICA wages.

The §603 rule doesn't cost you a dollar of contribution room — it changes the tax bucket the catch-up lands in. For a high earner who assumed their catch-up was shaving today's taxable income, that's a real planning shift worth confirming with the plan administrator. See the catch-up timeline visual for how the three regimes overlap by age, and the deep dive on 2026 Roth IRA contribution limits for the IRA side in detail.

Roth or pre-tax — how do you actually decide on the tax?

The Roth-vs-pre-tax question is a single bet: is your tax rate now higher or lower than it will be when you withdraw? Roth costs you tax today to skip it later; pre-tax does the reverse. The catch is that most comparisons quote the wrong "later" rate.

The real comparison is your marginal rate today versus your effective (blended) rate in retirement — and those are not measured the same way. Your contribution decision happens at the margin: a dollar deferred this year is taxed (or not) at the top of your current bracket, maybe 22% or 24%. But withdrawals in retirement don't all land in your top bracket. They fill the bottom of the stack first.

Here's why that matters. In 2026, retirement income fills the standard deduction ($16,100 single / $32,200 married filing jointly) at a 0% rate, then the 10% bracket, then 12%, before any of it reaches the rates you pay while working. So a pre-tax dollar you deduct at a 24% marginal rate may come back out at a blended rate well under that — because part of it is shielded by the standard deduction and the low brackets entirely.

A worked example (illustrative numbers, not statutory)

Suppose a single saver deducts $10,000 of 401(k) contributions while in the 24% marginal bracket — a $2,400 tax saving today. In retirement, imagine $40,000 of income from that pre-tax account in a year with no other earnings. The first $16,100 is wiped out by the standard deduction, leaving $23,900 of taxable income; the next $12,400 is taxed at 10% and the remaining $11,500 at 12%. That comes to about $2,620 of tax — an effective rate of roughly 6.5–7% on the $40,000, far below the 24% they avoided on the way in. Deferring won that round. Flip the facts — a saver in the 12% bracket today who expects large RMDs, a pension, and Social Security stacking them into 22%+ later — and Roth wins instead.

State tax is the other lever. A high earner in a high-income-tax state who plans to retire somewhere with no state income tax may prefer pre-tax now — deducting against the high combined rate and withdrawing later where the state takes nothing. The reverse argument supports Roth for someone who expects to retire into a higher-tax state. This is general framing; the arbitrage only works if the move actually happens.

The honest takeaway: neither "Roth always wins" nor "the deduction always wins" holds as a blanket rule. It turns on your marginal rate today, your projected blended rate later, and where you'll live. Many savers hedge by holding both. For the deeper tax-timing math — and to run your own numbers — see the Roth vs. Traditional decision and the Roth vs. Traditional calculator.

Do Roth IRAs and 401(k)s have required minimum distributions?

Required minimum distributions (RMDs) are the amounts the IRS forces you to withdraw — and pay tax on — once you reach a certain age. Whether they apply turns on two things: the account type and whether the money is pre-tax or Roth. Across the four cells here, the answer splits cleanly.

Roth IRA — none for the owner, ever. A Roth IRA has no lifetime RMDs for the original owner (§408A(c)(5)). You can leave the balance untouched and growing for your entire life. (Beneficiaries who inherit a Roth IRA do face their own distribution rules — a separate topic.)

Roth 401(k) — none, beginning 2024. This is the part most stale articles get wrong. SECURE 2.0 §325 eliminated lifetime RMDs from designated Roth accounts inside an employer plan starting in 2024. 2023 was the last year they applied. Before that, a Roth 401(k) — unlike a Roth IRA — did force annual withdrawals once you hit RMD age, which is why people rolled the balance into a Roth IRA to escape them.

Traditional 401(k) and Traditional IRA — yes, at 73 or 75. Pre-tax balances must begin distributing at age 73 if you were born 1951–1959, or 75 if you were born in 1960 or later (SECURE 2.0 §107). These RMDs are taxed as ordinary income, and missing one carries a penalty.

The "roll your Roth 401(k) out to dodge RMDs" reason is dead

For years the standard advice was to roll a Roth 401(k) into a Roth IRA purely to avoid the Roth 401(k)'s RMDs. Since 2024, that reason no longer exists — both accounts are now RMD-free for the owner. And to clear up a persistent myth: there was never a $5 million threshold above which Roth 401(k) RMDs kicked in. That figure was made up; the §325 repeal is total.

Other reasons to roll a Roth 401(k) into a Roth IRA may still make sense — a wider investment menu, consolidation, or lower fees — but be aware a rollover can affect your 5-year clock. RMD avoidance is no longer one of them.

Which gives you better access to your money before retirement?

This is where the two accounts diverge most sharply. Each has an early-access feature the other simply doesn't have, so "more flexible" depends entirely on which lever you need.

The 401(k) can lend; an IRA can't

A 401(k) may let you borrow against your balance — plans aren't required to offer loans, but many do. When allowed, the limit is the lesser of $50,000 or 50% of your vested balance, repaid with interest (to your own account) typically over five years. An IRA has no equivalent. An IRA cannot make a loan to its owner at all; pulling money out is a distribution, not a loan. The only IRA mechanism that resembles short-term borrowing is the once-per-12-month 60-day rollover — take the cash, redeposit the full amount within 60 days, and it's treated as never having left. Miss the window and it becomes a taxable distribution. (For whether a Roth IRA specifically can be borrowed against, see the dedicated explainer.)

The Rule of 55 — and the trap of rolling out

If you separate from your employer in or after the year you turn 55, the tax code lets you take distributions from that employer's 401(k) free of the 10% early-withdrawal penalty (age 50 for qualified public-safety employees). An IRA offers no such age-55 break. To get penalty-free IRA money before 59½, you generally have to set up a 72(t) SEPP — a rigid schedule of substantially equal periodic payments that, once started, must run for five years or until 59½, whichever is longer, with steep penalties for breaking it.

Here's the part stale "always roll your old 401(k) into an IRA" advice skips: rolling an old 401(k) into an IRA permanently forfeits the Rule of 55. Once those dollars are in an IRA, age-55 access is gone and you're back to the 72(t) regime. For someone retiring early, that can be a meaningful reason to leave money in the plan.

Roth IRA contributions come out anytime

The Roth IRA's own flexibility lives in its ordering rules. Money withdrawn comes out in a fixed sequence — contributions first, then converted amounts, then earnings (FIFO). Because you already paid tax on your direct contributions, you can withdraw up to your lifetime contribution total at any age, tax- and penalty-free. Earnings are the part that's restricted before 59½ and the five-year mark. That makes the contribution layer of a Roth IRA unusually accessible — a feature no 401(k) loan or Rule-of-55 carve-out quite replicates.

Which is better protected from creditors and lawsuits?

This is a real advantage of the 401(k) that almost no consumer comparison mentions, and it cuts the opposite way from most of this page: the workplace plan generally wins on asset protection.

A 401(k) carries unlimited federal ERISA anti-alienation protection. Under ERISA's anti-alienation rule, the assets in a qualified employer plan generally cannot be reached by creditors at all — and that protection holds both inside and outside of bankruptcy, with no dollar ceiling. A creditor who wins a lawsuit against you usually cannot touch a 401(k) balance (the main carve-outs are the IRS, a QDRO in divorce, and certain criminal-restitution claims).

A Roth IRA is protected too, but the protection is narrower and capped. In bankruptcy, federal law (BAPCPA) shields traditional and Roth IRA contributions up to an inflation-adjusted limit — currently $1,711,975, in effect through March 31, 2028, after which it is re-indexed. Balances above that cap are exposed in a bankruptcy filing.

There's an important nuance that helps the rollover IRA: dollars rolled into an IRA from an employer plan (like a 401(k)) are exempt in bankruptcy without the BAPCPA cap. So if you roll a large 401(k) into an IRA, those rollover funds keep their full protection — the $1,711,975 ceiling applies to direct IRA contributions, not to employer-plan rollover money. (Keeping rollover dollars in a separate IRA from your regular contributions can make that distinction easier to document.)

Outside of bankruptcy — an ordinary lawsuit, a creditor judgment, a malpractice claim — IRA creditor protection is governed by state law and varies widely. Some states fully shield IRAs; others protect only what's "reasonably necessary" for support; a few offer little. The 401(k)'s ERISA shield does not depend on which state you live in.

For most savers this asymmetry never matters. But it is a legitimate reason some people leave money in a 401(k) rather than rolling it out — relevant for physicians, business owners, landlords, and anyone with meaningful lawsuit exposure. Asset-protection planning is fact-specific and state-specific; this is general education, not legal advice.

How do investment choices and fees compare?

This is where a Roth IRA usually wins on flexibility — but the comparison is less lopsided than brokerage marketing suggests. A 401(k) gives you a curated menu: a fixed lineup of funds your employer and its recordkeeper chose, often a few dozen options at most. A Roth IRA opens the entire investment universe — virtually any stock, ETF, or mutual fund available at your broker — and the account is typically lower-cost to run.

Fees cut both ways, so the "which one first" question turns on the specifics of your plan. A 401(k) can carry a recordkeeping or administrative fee (sometimes a flat per-participant charge, sometimes a percentage of assets) layered on top of each fund's expense ratio. Those expense ratios vary widely: some plans bury participants in retail-class funds charging well over 1% a year, while others — especially large employers — negotiate institutional share classes that are cheaper than anything a retail IRA investor can buy, plus options an IRA simply doesn't offer, like a stable-value fund. Over decades, a recurring fee difference of even half a percentage point compounds into a meaningful drag, which is why many savers who have captured the full employer match next route additional dollars to a lower-cost Roth IRA before circling back to fill the 401(k).

A few 401(k)-only wrinkles belong in this comparison:

• Vesting. Employer matching dollars may sit behind a vesting schedule — a cliff (you own nothing until a set service date, then 100%) or graded (ownership phases in over several years). Your own contributions and their earnings are always 100% vested immediately. IRAs have no vesting concept at all; every dollar you put in is yours from day one.
• Net unrealized appreciation (NUA, §402(e)(4)). If you hold employer stock inside a 401(k), a qualifying lump-sum distribution can let the appreciation be taxed at long-term capital-gains rates rather than ordinary income — a treatment an IRA cannot provide. It's niche and rule-heavy, but for someone sitting on highly appreciated company stock it can be worth thousands. Rolling that stock into an IRA generally forfeits the option.

None of this points to a single right answer or a particular provider or fund. The honest takeaway: pull up your plan's fee disclosure (the §404(a)(5) participant notice), compare its expense ratios and admin costs against what the same exposure would cost in an IRA, and weigh that against the match, the menu, and features like stable value or NUA that only the plan offers.

What order should you fund a 401(k) and a Roth IRA?

For most savers with access to both, the question isn't 401(k) or Roth IRA — it's the order you feed them. A common approach is a "waterfall": fill each tier only after the one above it is full. The waterfall visual below lays out the same sequence.

• 1. Capture the full employer match. If your plan matches, say, 50% of the first 6% you defer, contributing less than 6% leaves a guaranteed return on the table. This is the one tier almost everyone agrees comes first — there is no Roth IRA equivalent to free money.
• 2. Fund a Roth IRA and/or an HSA. Up to $7,500 ($8,600 if 50 or older) into a Roth IRA, subject to the MAGI limits. An HSA, if you have a qualifying high-deductible plan, offers its own triple-tax-advantaged space many savers fill in parallel.
• 3. Go back and max the 401(k) to the $24,500 elective-deferral cap ($32,500 with the age-50 catch-up, $35,750 in the 60–63 window).
• 4. Mega backdoor Roth, if the plan allows it — after-tax contributions plus in-plan conversion or in-service rollout can push total additions toward the $72,000 §415(c) cap as Roth dollars.

Before any of this: most frameworks put a starter emergency fund and any high-interest debt (credit cards) ahead of retirement contributions beyond the match — a guaranteed 20%+ "return" from clearing card debt beats almost any market bet. That is step zero, not part of the retirement waterfall itself.

None of this is a personalized recommendation. It's a general framework; the right tier ordering depends on your tax bracket, plan features, and goals.

Why hold both buckets at all

The deeper rationale for splitting contributions across pre-tax and Roth is tax diversification — and it's a concrete planning lever, not a slogan. In retirement, having both a pre-tax 401(k) and a Roth IRA lets you choose which account to draw from each year. That withdrawal-sequencing flexibility can help you stay under an IRMAA Medicare-premium tier, keep below the NIIT thresholds ($200,000 single / $250,000 MFJ), limit how much of your Social Security gets taxed, and avoid pushing long-term capital gains into a higher stacking bracket. One bucket gives you no levers; two give you control.

The high-fee exception. The waterfall assumes a reasonable 401(k) menu. If your plan's funds carry steep expense ratios or layered recordkeeping fees, many savers flip tiers 2 and 3 — capturing the match, then prioritizing the open-universe Roth IRA before pouring more into a costly menu. Over decades, fee drag compounds against you as relentlessly as returns compound for you.

Two related paths worth knowing: the Saver's Match (a 50% federal match on the first $2,000 of contributions, up to $1,000, starting in 2027) and, for the self-employed, the Solo 401(k)-versus-Roth-IRA comparison — both covered in their own guides.

Can a 401(k) get you more Roth money than the limits suggest?

Yes — through a maneuver called the mega backdoor Roth, and it's a 401(k)-only capability. A Roth IRA caps you at $7,500 a year ($8,600 at 50+), and the standard 401(k) elective deferral is $24,500. But the §415(c) limit on total annual additions to a 401(k) — your deferrals plus the employer match plus any after-tax contributions — is $72,000 for 2026 (catch-up sits on top of that). The mega backdoor is the route to filling the gap between $24,500 and $72,000 with Roth dollars.

It works only if your plan offers two specific features, both of which you confirm with HR or in the plan's summary description:

• After-tax (non-Roth) contributions. These are a distinct bucket — not your Roth deferrals, not the pre-tax line. Many plans don't allow them at all.
• An in-plan Roth conversion OR an in-service withdrawal. One of these has to exist so the after-tax money can move into Roth treatment promptly, before it generates much taxable earnings.

With both in place, a saver can contribute after-tax dollars and convert them to Roth, pushing total Roth additions far past the $24,500 deferral toward the $72,000 cap (the after-tax room is whatever is left of that $72,000 once your own deferrals and the employer match are counted). Without both, there is no mega backdoor — the after-tax bucket just sits there as ordinary taxable savings. This is one of the more powerful 401(k)-side advantages, and most comparison pages skip it entirely.

Not the same as the ordinary backdoor Roth

The two get conflated, but they're different moves. The ordinary backdoor Roth lives on the IRA side: it's for savers whose income exceeds the Roth IRA MAGI limit — $153,000–$168,000 for single filers, $242,000–$252,000 for joint filers in 2026 — who contribute to a Traditional IRA and convert it, because there's no income limit on a conversion. That's measured in thousands of Roth dollars. The mega backdoor is measured in tens of thousands and never touches an IRA. Many high earners who qualify for one also qualify for the other.

Both routes have mechanics, pro-rata wrinkles, and timing traps worth understanding before acting — see the deep dives on the mega backdoor Roth and the backdoor Roth IRA.

Who should lean toward the 401(k), and who toward the Roth IRA?

There is no universal winner here. The accounts solve different problems, and the right emphasis depends on your situation. Think in terms of signals that tilt the decision rather than a verdict. The head-to-head scorecard above lays out the line items; this is how to read them for your own case.

Signals that lean toward the 401(k)

• You have an employer match on the table. Capturing the full match is the closest thing to free money in the tax code, and no Roth IRA can replicate it. For many savers this comes first, full stop.
• Your income is above the Roth IRA gate. Direct Roth IRA contributions phase out at $153,000–$168,000 (single/HoH) and $242,000–$252,000 (MFJ) in 2026. A 401(k) has no income limit to contribute, Traditional or Roth, so high earners often route more here.
• You carry lawsuit or creditor exposure — physicians, business owners, landlords. A 401(k) carries unlimited federal ERISA anti-alienation protection in and out of bankruptcy; a Roth IRA's federal bankruptcy protection is capped at $1,711,975 (through 3/31/2028), and outside bankruptcy it depends on state law.
• You're planning to retire early, around 55. The Rule of 55 lets you tap a 401(k) penalty-free after separating from that employer at 55 (50 for qualifying public-safety workers). An IRA generally can't do this without a 72(t) schedule.
• Your plan offers a mega backdoor Roth. If it allows after-tax (non-Roth) contributions plus in-plan conversion or in-service withdrawal, total additions can be driven toward the $72,000 §415(c) cap as Roth — far past the $24,500 deferral.

Signals that lean toward the Roth IRA

• Your plan menu is expensive or thin — high expense ratios, recordkeeping fees, few fund choices. Over decades, fee drag compounds against you.
• You want the open investment universe. An IRA can hold almost anything at any broker; a 401(k) is limited to the curated plan menu.
• You value contribution-withdrawal flexibility. Roth IRA contributions (not earnings) can be withdrawn anytime, tax- and penalty-free.
• You expect a higher tax rate later. If your future rate looks higher than today's, paying tax now in a Roth often appeals.

For most savers, though, the honest answer is both, in sequence — not one or the other. A common approach: capture the full match first, then fund a Roth IRA (and/or an HSA) for the open menu and flexibility, then return to max the 401(k), then the mega backdoor if the plan supports it. See the funding-order section for that walkthrough. As always, this is general education, not personalized advice — what fits depends on your situation.