Max Out 401(k) or Roth IRA First? The Right Order

5 min read

If you only have a few hundred dollars a month to invest, the question is not whether a 401(k) or a Roth IRA is "better" in the abstract. It is which one should get your next dollar. The answer is a funding order, not a single account. This is sometimes called the contribution waterfall, and for most people it runs in three stages: first capture the full employer 401(k) match, then fill up a Roth IRA, then come back and finish maxing the 401(k).

This guide covers the account-funding sequence. If you are still deciding which account type fits your tax situation, read 401(k) vs Roth IRA: which first for the tax-bracket logic, then come back here for the order of operations.

The contribution waterfall, in plain order

  1. 401(k) up to the full employer match. If your employer matches contributions, that match is an immediate, guaranteed return on your money. Nothing else in this list beats it, so it goes first.
  2. Max out a Roth IRA. A Roth IRA gives you tax-free growth, a wider menu of low-cost investments than most workplace plans, and easy access to your own contributions if life goes sideways. Fill it before adding more to the 401(k).
  3. Go back and max the 401(k). Once the Roth IRA is full, return to the 401(k) and push contributions up toward the annual employee limit.

The logic is simple: grab free money first, then prioritize the most flexible tax-advantaged account, then use the high-capacity account to soak up whatever is left.

Why the match comes before everything

A typical match might be 50 cents on the dollar up to 6% of pay, or dollar-for-dollar up to 3%. Either way, the match is a return you earn the instant you contribute, before any market gains. Skipping it to fund a Roth IRA means leaving guaranteed money on the table. Always contribute at least enough to get the entire match before any dollar goes anywhere else.

Why the Roth IRA is the strong middle step

After the match, most savers should favor the Roth IRA over additional 401(k) contributions for three reasons. First, you typically get far more investment choice and lower fees in an IRA than in an employer plan. Second, Roth contributions (not earnings) can generally be withdrawn at any time without tax or penalty, which makes the account double as a deep backstop. Third, tax-free growth is especially valuable if you expect to be in a similar or higher tax bracket later. There is a catch: Roth IRA eligibility phases out at higher incomes, and the contribution limit is shared across all your IRAs. Check the current income phase-out ranges and limits on IRS.gov before you contribute, because they change most years.

The 2026 numbers you actually need

For 2026, the employee 401(k) contribution limit is in the mid-$20,000s and the IRA limit is in the mid-$7,000s, with separate catch-up amounts once you reach age 50. Rather than memorize figures that shift annually, confirm the exact 2026 limits, the Roth IRA income phase-out thresholds, and catch-up amounts directly at IRS.gov. Two newer rules matter here. The SECURE 2.0 Act adds a larger "super" catch-up for savers aged 60 to 63, letting that narrow age band contribute more to a workplace plan than the standard 50-plus catch-up. Separately, SECURE 2.0 requires higher earners (those whose prior-year wages with that employer exceeded a set, inflation-indexed threshold) to make their 401(k) catch-up contributions on a Roth basis rather than pre-tax. This requirement takes effect in 2026, but plans have a good-faith transition period, so if either rule could apply to you, verify the current threshold and how your plan is handling it on IRS.gov.

A worked example with the math

Say you earn $80,000 and can invest $1,800 a month, which is $21,600 a year. Your employer matches 50% of contributions up to 6% of pay. Here is how the waterfall fills:

  • Step 1 - capture the match. 6% of $80,000 is $4,800. Contributing $4,800 to the 401(k) earns the full match, an extra $2,400 from your employer. You now have $7,200 working for you from a $4,800 outlay.
  • Step 2 - max the Roth IRA. You have $21,600 minus $4,800, or $16,800, left to allocate. Direct enough to fully fund the Roth IRA for the year (use the current IRA limit from IRS.gov; for this example assume roughly $7,500). That leaves $16,800 minus $7,500, or $9,300.
  • Step 3 - back to the 401(k). Put the remaining $9,300 into the 401(k). Your total 401(k) contribution is $4,800 plus $9,300, or $14,100, comfortably under the employee limit.

Total invested: $4,800 plus $7,500 plus $9,300 equals $21,600 of your money, plus $2,400 of employer match, for $24,000 going into retirement accounts this year. Every dollar landed in the highest-value spot available.

Common gotchas

  • Front-loading and losing the match. If you max the 401(k) early in the year, some employers stop matching once you stop contributing. Check whether your plan has a "true-up" provision; if not, spread contributions across all pay periods.
  • Earning too much for a direct Roth IRA. If your income exceeds the phase-out range, a direct Roth contribution may be reduced or disallowed. People in this situation often look at a traditional IRA or the backdoor Roth route; confirm the rules on IRS.gov first.
  • No match at all. If your employer offers no match, the waterfall starts at step 2. Many savers then fund the Roth IRA first and only use the 401(k) for the extra capacity.
  • Ignoring debt and the emergency fund. High-interest debt and a basic cash cushion generally come before step 2. See pay off debt or invest first to sequence those.

See what each priority level is worth

The order matters because of decades of compounding. To see how much a fully funded Roth IRA or maxed 401(k) could grow by retirement, run your numbers through the retirement calculator, then stress-test different contribution rates and returns with the investment return calculator. If early retirement is the goal, the FIRE calculator shows how a higher savings rate pulls your finish line closer.

These are estimates, not personalized financial advice. Contribution limits, income phase-outs, and catch-up rules change, so verify the current figures on IRS.gov and consider a fee-only advisor for decisions specific to your situation.

Frequently Asked Questions

Neither all the way first. Contribute to the 401(k) only up to the full employer match, then fully fund a Roth IRA, then return to the 401(k) and max it. This waterfall captures free match money first, then prioritizes the Roth IRA's flexibility and tax-free growth before using the 401(k)'s larger capacity.

Without a match, skip straight to the Roth IRA. With no guaranteed return to chase, most savers fund the Roth IRA first for its lower fees, wider investment choice, and withdrawal flexibility, then use the 401(k) only for additional tax-advantaged room after the Roth IRA is maxed for the year.

For 2026 the employee 401(k) limit sits in the mid-$20,000s and the IRA limit in the mid-$7,000s, with separate catch-up amounts at age 50 and a larger SECURE 2.0 catch-up for ages 60 to 63. These figures change yearly, so confirm the exact numbers and Roth income phase-outs at IRS.gov before contributing.

Under the SECURE 2.0 Act, savers whose prior-year wages with their employer exceeded a set, inflation-indexed threshold must make any 401(k) catch-up contributions on a Roth (after-tax) basis instead of pre-tax. It applies only to the catch-up portion. The rule takes effect in 2026 with a good-faith transition period, so verify the current threshold and how your plan handles it on IRS.gov.

Yes. The accounts have separate annual limits, so you can fund both. The waterfall just decides which gets each dollar: the 401(k) up to the match, then the Roth IRA to its limit, then back to the 401(k). High earners may face Roth IRA income phase-outs; check current ranges on IRS.gov.