401(k) or Roth IRA First: The Order That Wins

Ask the internet whether to fund your 401(k) or your Roth IRA and you'll get the same four words:

"Max the Roth first."

It's decent advice wearing a costume. Because these two accounts aren't competitors — they're specialists. One has free money and a huge ceiling. The other has every investment on earth and rules that bend.

The right question isn't which account wins. It's:

Here's the order, the math behind it, and the four situations where it flips. 👇

1. 401(k) up to the full match → 2. Roth IRA to the limit → 3. Back to the 401(k)

Each account gets used for the thing it's actually good at: the 401(k) for employer money and ceiling space, the Roth IRA for investment choice and flexibility, then the 401(k) again because it's the only one with room left.

For 2026 that's up to $24,500 in the 401(k) and $7,500 across all IRAs.

That's the default. Now here's why it works — and when to ignore it.

Earn $80,000 with a 50%-up-to-6% match. Put in $4,800, your employer adds $2,400.

You just made 50% in one day, guaranteed, before the market did anything. No investment on earth competes with that.

Skipping the match to fund a Roth IRA isn't optimization. It's declining part of your salary.

Three things nobody checks:

The formula. "6%" means nothing on its own. 100%-up-to-3% and 50%-up-to-6% both give you 3% of salary — but one requires you to contribute 3% and the other requires 6%. Contribute the wrong number and you leave money behind. Read the plan doc, not a Reddit thread.

Vesting. Your own deferrals are always 100% yours. Employer money often isn't — a 3-year cliff means quitting at 2 years 11 months forfeits all of it. If you're near a cliff, your resignation date is worth real money.

The true-up (the trap nobody warns about). Match is usually calculated per paycheck. Front-load your $24,500 and finish contributing in August, and in a plan without a true-up provision you get zero match for September through December — potentially thousands of dollars, gone, for being too enthusiastic. Ask HR one question: "does our plan true up?" If no, spread contributions across all 26 paychecks.

Once the match is captured, the 401(k) loses its superpower and the comparison gets real.

The Roth IRA wins on two things:

Investment choice. A 401(k) menu is whatever your HR department negotiated — maybe 15 funds, maybe expensive ones. An IRA gives you essentially the entire market.

Flexibility. Roth IRA contributions (your basis, not earnings) can generally come out anytime, tax- and penalty-free. That makes it a quiet backstop and a genuine early-retirement bridge. A 401(k) plays by the plan's distribution rules — though it may offer loans, which an IRA never can.

Everyone waves at "fees matter." Let's make it hurt.

$7,500 a year for 30 years at a 7% gross return:

Same contributions. Same market. ~$107,000 difference between the ends, purely from cost. The Department of Labor is explicit that plan fees come straight out of your returns.

So after the match, "is my plan cheap?" is a legitimate, six-figure question. Look up your funds' expense ratios and your plan's admin fee. Most people have never done this once.

Here's where generic advice breaks.

For 2026, direct Roth IRA contributions phase out at:

Above that, "max your Roth IRA first" is advice you're not allowed to follow.

But — and this is the part most people miss — the Roth 401(k) has no income limit at all. A $400,000 earner who can't put a dollar in a Roth IRA can put the full $24,500 into a Roth 401(k).

Two workarounds worth knowing:

The backdoor Roth. Non-deductible traditional IRA contribution, then convert. Legal, reported on Form 8606, no income limit on conversions. The catch is the pro-rata rule: existing pre-tax IRA balances make the conversion partly taxable. Which is a strong argument for leaving old 401(k) money in a 401(k) instead of rolling it to an IRA.

The mega backdoor Roth. If your plan allows after-tax contributions plus in-plan Roth conversion, you can fill the gap between your $24,500 deferral and the $72,000 overall 2026 limit with Roth dollars. Most plans don't offer it. If yours does, it dwarfs everything else on this list.

"401(k) vs Roth IRA" quietly hides a second decision: what tax flavor should the money be?

If rates are identical now and later, traditional and Roth produce exactly the same after-tax result. The math is a tie. Everything depends on the rate spread.

And here's the nuance nobody mentions: you deduct at your marginal rate but withdraw at your effective rate — refilling the standard deduction (0%), then 10%, then 12%. Somebody has to fill those cheap brackets in retirement, and Roth dollars can't do it.

Which is why 100% Roth is rarely optimal, and neither is 100% traditional.

1. Your plan is a fee trap. 1%+ funds, no index options, a plan admin fee on top. Take the match, then everything else goes to the Roth IRA — and only come back to the 401(k) if you've filled the IRA and still have money left.

2. Your plan is excellent. Institutional share classes at 0.03%, a strong target-date fund, low admin fees. The Roth IRA's edge shrinks to almost nothing. Feed the 401(k) aggressively.

3. You're above the Roth IRA income limits. Skip straight to the 401(k) (Roth or traditional), then consider the backdoor or mega backdoor.

4. You're eligible for an HSA. Genuinely: after the match, a Health Savings Account often beats both. Deductible going in (and payroll contributions can dodge FICA, which no 401(k) does), tax-free growth, tax-free for qualified medical costs. It's the only triple tax-advantaged account in existence. 2026 limits: $4,400 self-only, $8,750 family. Save your receipts and reimburse yourself decades later — it's a stealth retirement account.

Two things buried in that table:

The limits are shared, not stacked. $24,500 is your combined traditional + Roth 401(k) deferral, and $7,500 is combined across all IRAs. You can't double-dip by using both flavors.

SECURE 2.0 bites in 2026. If your prior-year wages from that employer exceeded $150,000, your catch-up contributions generally must be Roth. You may be doing Roth whether you picked it or not — check your payroll setup.

Sarah, $70k, 50%-up-to-6% match, $1,000/month to invest.
$350/mo to the 401(k) captures the full match. $625/mo maxes the Roth IRA. The rest goes back to the 401(k). Textbook order.

David, $220k, great low-cost plan, near the Roth IRA phase-out.
Match first, then pour into the 401(k). If he wants Roth exposure, the Roth 401(k) has no income limit. Backdoor Roth optional — but only if he has no pre-tax IRA balances.

Emily, $45k, 12% bracket, career on the way up.
Match, then Roth everything. Her deduction is worth pennies now and her horizon is 40 years. If her plan offers a Roth 401(k), she can go far past the IRA limit.

James, $300k, 35% bracket, expects far less income in retirement.
Traditional 401(k), heavily. Deducting at 35% today to withdraw at an effective ~15% later is the whole game. He adds Roth for diversification, not because Roth "sounds better."

The IRS gives you a ceiling, not a homework assignment.

If you're carrying a 22% credit card, that debt is a guaranteed 22% return waiting to be collected — it beats any expected market return, with zero risk. If you have no emergency fund, an early 401(k) withdrawal costs income tax plus a 10% penalty, which turns a $10,000 emergency into roughly $6,600 of usable cash.

Order of operations beats intensity: match → high-interest debt → emergency fund → HSA → Roth IRA → 401(k).

Stop asking which account is better. They do different jobs:

Default: match → Roth IRA → 401(k). Flip it if your plan is expensive, if it's exceptional, if you're over the income limits, or if an HSA is on the table.

And never, ever skip the match while optimizing the wrapper. Free money first. Philosophy second.

See you next issue. 🪙

Penny Brief is for informational and educational purposes only and is not individualized tax, legal or investment advice. 2026 figures (401(k) deferral $24,500; catch-ups of $8,000 and $11,250; IRA $7,500 plus $1,100; Roth IRA phase-outs of $153,000–$168,000 single/HoH and $242,000–$252,000 MFJ; $72,000 overall defined-contribution limit; HSA $4,400 self-only and $8,750 family; the SECURE 2.0 Roth catch-up rule above $150,000 of prior-year wages) reflect current IRS guidance and can change. Plan-specific rules on matching, vesting, true-ups, after-tax contributions and loans vary — read your plan document. Growth and fee examples are hypothetical, assume a constant 7% gross return, and ignore taxes and state rules. Confirm with the IRS, your plan administrator and a qualified professional before acting.

Sources: IRS (2026 contribution limits and Roth IRA phase-outs, employer matching and vesting, Roth account rules, rollovers, HSA rules, Form 8606); U.S. Department of Labor (401(k) plan fees); SECURE 2.0 Act provisions.