Roth IRA vs. 401(k): Which Should You Fund First?

The Roth IRA vs. 401(k) question is the most common investing decision for working adults in their 20s and 30s, and most advice oversimplifies it to “get the match.” The right funding order depends on your tax bracket, employer match structure, and when you plan to access the money. The IRS sets different contribution limits, income thresholds, and withdrawal rules for each account, and those differences determine which dollars should go where. This guide walks through the 2026 rules, compares both accounts with real numbers, and provides a decision framework. For details on our verification process, see how we research.

What are the 2026 contribution limits for each account?

The IRS adjusts retirement account limits annually for inflation. For 2026, the 401(k) employee contribution limit is $23,500, with an additional $7,500 catch-up for workers aged 50 and older. The IRS confirmed these limits in late 2025. The Roth IRA contribution limit is $7,000, with a $1,000 catch-up for those 50 and older. Employer 401(k) matches do not count toward the employee limit — they fall under the combined employer-plus-employee ceiling of $70,000.

Should you always get the 401(k) match first?

Yes. The employer match is free money with an instant return that no investment can replicate. If your employer matches 50% of contributions up to 6% of salary, contributing 6% on a $60,000 salary means you put in $3,600 and your employer adds $1,800. That is a 50% return before your money even enters the market. According to Vanguard’s How America Saves report, the most common match formula is 50 cents per dollar up to 6%, though some employers match dollar-for-dollar up to 3-4%.

Skipping the match to fund a Roth IRA first is a mathematical error in nearly every scenario. The only exception is if you have high-interest debt above 10% — paying that down may beat even a 50% match when you factor in the guaranteed debt-interest savings. But for the standard decision between 401(k) match and Roth IRA, the match always comes first. If you are wondering whether the 401(k) is worth contributing to without an employer match at all, the calculation changes significantly.

When does a Roth IRA beat a traditional 401(k)?

A Roth IRA beats additional 401(k) contributions (beyond the match) when your current marginal tax rate is lower than your expected rate in retirement. The IRS publishes tax brackets annually. If you earn $55,000 and file single, you are in the 22% bracket for 2026. If you expect to withdraw $80,000 or more annually in retirement — through Social Security, 401(k) distributions, and other income — you will likely be in a higher bracket then. Paying 22% now to withdraw tax-free later is the right trade.

The Roth IRA also wins on flexibility. You can withdraw your contributions (not earnings) at any time without penalty. This makes it a partial emergency backstop. The 401(k) locks your money away until 59.5 unless you take a loan or pay the 10% early withdrawal penalty. For beginning investors who worry about needing access to their money, this flexibility matters. The SECURE 2.0 Act also eliminated required minimum distributions for Roth IRAs, meaning the money can grow tax-free for your entire life and pass to heirs.

What is the optimal funding order?

The funding sequence that maximizes tax efficiency and returns for most workers earning under $100,000 follows three steps. This framework comes from the general principles in Bogleheads’ investment prioritization guide, which aggregates decades of tax-efficient investing research.

This sequence works because it captures the match first (highest guaranteed return), then prioritizes the Roth IRA for tax diversification and flexibility, then fills the remaining 401(k) space for the pre-tax deduction. If your income exceeds the Roth IRA limit, consider a backdoor Roth conversion — contribute to a traditional IRA and convert to Roth immediately. The pro-rata rule applies if you have existing pre-tax IRA balances.

How much difference does the right order make over 30 years?

On a $60,000 salary with a 50%-up-to-6% match, investing $10,200 per year ($3,600 to the 401(k) for the full match, then $6,600 to the Roth IRA) at a 7% average annual return produces approximately $1.02 million after 30 years. The Roth IRA portion — roughly $660,000 — is entirely tax-free at withdrawal. The 401(k) portion will be taxed as ordinary income. If instead you put the full $10,200 into the 401(k) without optimizing, you would owe income tax on the entire balance at withdrawal. At a 22% effective rate, that is roughly $225,000 in retirement taxes on the full amount versus roughly $75,000 when the Roth portion is shielded.

Tax diversification is the real payoff. Nobody knows what tax rates will be in 30 years. Having both pre-tax (401(k)) and post-tax (Roth IRA) buckets lets you control your taxable income in retirement by choosing which account to draw from each year. This is the most underrated benefit of funding both accounts, and it is the reason the sequence matters more than the total amount for anyone whose budget allows both contributions.