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Roth IRA vs. 401(k): Where Should Your Next Dollar Go?

A clear order of operations for where each additional retirement dollar should go — match first, then Roth, then more.

Retirement Edge Research8 min readUpdated July 2026

Roth IRA or 401(k) is usually the wrong way to frame the question. For most people it is not either/or — it is in what order. Here is a simple sequence that works for the majority of savers.

The short version

The sequence financial educators commonly describe runs in this order: contribute to the 401(k) up to the full employer match, then fund a Roth IRA for its tax-free growth and flexibility, then return to the 401(k) for additional savings. Match first, Roth second, more 401(k) third.

Step 1 — Capture the full 401(k) match

An employer match is an immediate, guaranteed return you cannot get anywhere else. It is generally described as the first dollar to capture, ahead of other retirement savings, because skipping the match to fund something else leaves employer money uncollected.

Step 2 — Fund a Roth IRA

Once the match is captured, a Roth IRA is often the next best home. Qualified growth comes out tax-free, you get a wider investment menu than most 401(k)s, and contributions (not earnings) can be withdrawn without penalty, which adds flexibility. High earners should note the income limits on direct Roth IRA contributions — a topic worth a professional's input.

Step 3 — Back to the 401(k)

Maxed the Roth IRA and still saving? Return to the 401(k) and increase your contribution toward the annual limit. You get more tax-advantaged space and, depending on your plan, possibly a Roth 401(k) option too — which we compare in 401(k) vs. Roth 401(k).

The part every account has in common

Whichever account holds the money, the allocation inside it is what compounds. A Roth IRA invested too timidly will trail a 401(k) invested well. Get the account order right — then get the investing right.

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The account is the wrapper — the allocation is the engineSee how a disciplined, rules-based index portfolio compares to a typical one, in any account.

For the investing side, start with a model ETF portfolio by age.

The part that actually matters: discipline

A sound portfolio only helps if you hold it through the rough stretches and change it for the right reasons. That is the idea behind the Alpha Edge strategy — a rules-based monthly update built on everyday index ETFs, so your portfolio follows evidence instead of emotion. Most months, it says do nothing.

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Keep reading — more index guides

A disciplined index model portfolio, once a month.

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Educational research, not individual advice. This article is general educational material about asset allocation and is not personalized investment, tax, or legal advice. Mixes and figures shown are illustrative examples, not recommendations for any individual. Past performance does not guarantee future results, and all investing involves risk, including possible loss of principal. Consider consulting a qualified professional about your own circumstances. Backtested results do not reflect fees, taxes, transaction costs, or slippage, which would reduce returns. Retirement Edge is a financial research publisher and is not a registered investment adviser.