401(k) vs IRA: Which to Max First in 2026 (The Right Order)
By the 3Tej Research Desk · Published May 23, 2026 · 3 min read
- Step 1: 401(k) contributions up to the FULL employer match (highest free-money ROI)
- Step 2: HSA if you have an HDHP (triple tax advantage, 4,300 USD individual 2026)
- Step 3: Roth IRA up to limit (7,000 USD if under 50, 8,000 if 50+)
- Step 4: 401(k) up to elective deferral limit (23,500 USD in 2026)
- Step 5: Mega backdoor Roth, then taxable brokerage
The single most common US retirement question: should I max my 401(k) or my IRA first? The answer is neither, in isolation; the optimal order has 5 steps that interleave 401(k) match, HSA, Roth IRA, full 401(k), and beyond. Following the wrong order can leave thousands of dollars per year of free money on the table. This guide walks the right sequence for 2026 with the dollar limits and the reasoning behind each step.
2026 contribution limits at a glance
| Account | Limit (under 50) | Catch-up (50+) | Combined (50+) |
|---|---|---|---|
| 401(k) elective deferral | 23,500 USD | +7,500 USD | 31,000 USD |
| 401(k) total (415c) | 70,000 USD | +7,500 USD | 77,500 USD |
| IRA (Traditional + Roth combined) | 7,000 USD | +1,000 USD | 8,000 USD |
| HSA (individual) | 4,300 USD | +1,000 USD (age 55+) | 5,300 USD |
| HSA (family) | 8,550 USD | +1,000 USD (age 55+) | 9,550 USD |
| FSA health (use-or-lose) | 3,300 USD | n/a | 3,300 USD |
The right order, with reasoning
- 1. 401(k) up to the FULL employer match. If your employer matches 50% of the first 6%, contribute 6% of salary. The 50% match is an immediate, guaranteed return that no other investment can offer. Skipping this is the largest single retirement mistake.
- 2. HSA if eligible (HDHP enrolled). Triple tax advantage: contributions reduce AGI, growth is tax-free, qualified medical withdrawals are tax-free. After age 65, non-medical withdrawals are taxed like Traditional IRA. The HSA is mathematically the best retirement account in the US tax code if used as such.
- 3. Roth IRA up to the limit. 7,000 USD per year (8,000 if 50+). Income limits 2026: phase-out begins at 165,000 USD single / 246,000 USD MFJ. If over the limit, use a backdoor Roth (non-deductible Traditional IRA contribution + immediate conversion).
- 4. 401(k) up to the elective limit. Now max out your 401(k) employee deferral at 23,500 USD. Traditional or Roth 401(k) depending on current vs expected retirement tax bracket. If your bracket today is uncertain or you cannot predict 30+ years out, split 50/50.
- 5. Mega backdoor Roth (if plan supports). Use after-tax 401(k) contributions plus in-plan Roth conversion to fill the gap between your 23,500 USD elective deferral + employer match and the 70,000 USD 415(c) cap. Up to 46,500 USD additional Roth dollars per year.
- 6. Taxable brokerage. Beyond the above, anything left over goes to a regular taxable account. Lower tax efficiency than retirement accounts but unlimited contributions and accessible any time without penalty.
Why this order beats the alternatives
The order optimizes for three things in priority sequence: (1) free money, (2) tax efficiency, and (3) flexibility.
- Step 1 captures FREE MONEY. No other step produces a 50% to 100% guaranteed return. It must come first.
- Step 2 is the only TRIPLE tax-advantaged account. HSA contributions reduce income tax, growth is tax-free, and qualified medical withdrawals (including in retirement) are tax-free. Roth and 401(k) each have two of those three; HSA has all three.
- Step 3 (Roth IRA) before 4 (full 401(k))? The Roth IRA offers better fund selection (lower expense ratios), no required minimum distributions during your lifetime, accessible contributions at any time without penalty, and tax-free withdrawals in retirement. Most 401(k)s have limited fund menus with higher expense ratios.
- Step 5 only applies to high earners with the right plan. Most workers will not reach step 5. If you do, the mega backdoor Roth is the single most valuable tax move available to US W-2 employees.
When to deviate from the order
- You expect retirement bracket BELOW current. Use more Traditional 401(k) over Roth, since you would rather defer tax now at high marginal rate and pay later at lower rate.
- You have high-interest debt. Pay any debt above 7% (credit cards, personal loans, some student loans) AHEAD of step 4. The guaranteed return from paying off 25% credit card debt beats any investment.
- You need cash flow. If maxing retirement accounts breaks your monthly budget, scale back. Step 1 (match) is non-negotiable; everything else flexes.
- You expect to need money before 59 and a half. Use Roth contributions (always penalty-free withdrawable) and taxable brokerage more, lock-up retirement accounts less.
Frequently asked questions
Should I max 401(k) or Roth IRA first?
Neither in isolation. Contribute to 401(k) UP TO the employer match first (step 1). Then max HSA if eligible (step 2). Then max Roth IRA (step 3). Then max out 401(k) elective deferral (step 4). The Roth IRA goes BEFORE finishing the 401(k) because of better fund selection, no RMDs, and accessible contributions.
What is the 2026 401(k) contribution limit?
23,500 USD employee elective deferral, plus 7,500 USD catch-up if 50 or older. Total combined limit (including employer match and after-tax contributions) is 70,000 USD under 415(c), or 77,500 USD if 50+.
Should I contribute to Roth or Traditional 401(k)?
Roth if your tax bracket today is LOWER than your expected retirement bracket. Traditional if higher. Most early-career workers should default to Roth; most peak-earnings workers benefit from Traditional. If uncertain (a 30+ year forecast is hard), split 50/50.
Can I contribute to both a 401(k) and Roth IRA in the same year?
Yes. The 401(k) limit (23,500 USD in 2026) and IRA limit (7,000 USD) are completely separate. You can max both for a combined 30,500 USD of pre-tax + Roth contributions, plus any catch-up if 50+.
What is the income limit for Roth IRA in 2026?
Phase-out begins at 165,000 USD MAGI single / 246,000 USD MAGI MFJ. Fully phased out at 180,000 USD single / 261,000 USD MFJ. Above the phase-out, use the backdoor Roth (non-deductible Traditional IRA contribution then convert to Roth).
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Sources and methodology
Numbers on this page are sourced from official government / regulator websites and refreshed automatically every Sunday by our build pipeline. Hover any number with a dotted underline to see its source and as-of date.
Tax authorities cited (8 jurisdictions)
Methodology: each calculator linked from this post documents its formula. Live market data (FX, treasury yields, mortgage rates) is pulled from public APIs (exchangerate.host, FRED, BoE, ECB, BoC, CoinGecko, stooq).