Quick Answer
Quick Answer: Both accounts have unique advantages. The optimal strategy for most workers: 1) Contribute to your 401(k) up to the employer match (free money), 2) Max out an IRA, usually a Roth IRA ($7,500 in 2026), or add to the 401(k) instead if its funds are low-cost, 3) Return to your 401(k) and contribute up to its limit. This captures free money, provides tax diversification, and maximizes retirement savings.
Key Stat: The IRS allows $24,500 + $7,500 = $32,000 total in tax-advantaged retirement savings for 2026 (even more with catch-up contributions).
Key Takeaways
- 401(k) contribution limit is $24,500 in 2026; IRA limit is $7,500 - you can use both
- Always capture employer match first - it's an instant 50-100% return on your money
- 401(k) has no income limits; Roth IRA phases out at $153K-$168K (single) / $242K-$252K (married) in 2026
- Roth IRA offers tax-free withdrawals and no required minimum distributions
- IRAs offer more investment choices; 401(k)s are limited to plan menu options
401(k) vs IRA: Key Differences at a Glance
| Feature | 401(k) | Traditional IRA | Roth IRA |
|---|---|---|---|
| 2026 Contribution Limit | $24,500 | $7,500 | $7,500 |
| Catch-Up (Age 50+) | +$8,000 | +$1,100 | +$1,100 |
| Employer Match | Yes (free money!) | No | No |
| Tax on Contributions | Pre-tax | Pre-tax (may be limited) | After-tax |
| Tax on Withdrawals | Taxed as income | Taxed as income | Tax-free |
| Income Limits | None | Deduction limits | $153K-$168K single / $242K-$252K married |
| Investment Options | Limited to plan menu | Unlimited | Unlimited |
| Required Distributions | Traditional: yes (age 73, or 75 if born 1960+); Roth 401(k): no lifetime RMDs since 2024 | Yes (age 73, or 75 if born 1960+) | No (lifetime) |
| Loans | If your plan offers them: up to the lesser of 50% of your vested balance or $50,000 | Not allowed (a prohibited transaction) | Not allowed (a prohibited transaction) |
Under SECURE 2.0, the RMD age is 73 for those born 1951-1959 and 75 for anyone born in 1960 or later. See our SECURE 2.0 RMD Age Rules guide for the full schedule. Since 2024, designated Roth accounts in a 401(k) no longer require withdrawals during the owner's lifetime, the same as a Roth IRA (IRS: Required Minimum Distributions(opens in new tab)). Beneficiaries who inherit either account are still subject to the inherited-account rules.
Plans are not required to offer loans. Where a plan does, the IRS caps a loan at the lesser of 50% of your vested balance or $50,000 (or up to $10,000 if half your vested balance is less than that), generally repaid within five years. Borrowing from an IRA is a prohibited transaction (IRS: Retirement Topics, Loans(opens in new tab)).
Bottom line
A 401(k) offers higher contribution limits and employer matching, while IRAs offer more investment flexibility. The best strategy? Use both to maximize your retirement savings.
Quick Contribution Comparison
For 2026, you can contribute up to $24,500 to a 401(k) and $7,500 to an IRA -- a combined maximum of $32,000 in tax-advantaged retirement savings. At a 22% marginal tax bracket, maxing the 401(k) alone saves roughly $5,390 in federal taxes this year, and maxing the IRA adds another $1,650 in savings (for traditional pre-tax contributions). Combined, that is approximately $7,040 in tax savings on top of tax-deferred growth for decades.
Use the full 401(k) retirement calculator to model your own income, employer match, and long-term projected balance.
Understanding the Account Types
Traditional 401(k)
A 401(k) is an employer-sponsored retirement plan that lets you contribute pre-tax dollars from your paycheck. Your contributions reduce your taxable income today, and your investments grow tax-deferred until retirement.
- Contribution limit: $24,500 in 2026
- Key advantage: Employer match (free money)
- Tax treatment: Pay taxes when you withdraw in retirement
- Best for: Those who want to maximize tax-deferred savings with employer match
Roth 401(k)
Many employers now offer a Roth 401(k) option alongside the traditional 401(k). You contribute after-tax dollars, but withdrawals in retirement are completely tax-free.
- Same $24,500 limit (combined with traditional 401(k))
- No income limits (unlike Roth IRA)
- Employer match goes to traditional (pre-tax)
- Best for: Young workers who expect higher taxes in retirement
Traditional IRA
An Individual Retirement Account (IRA) that you open yourself at any brokerage. Contributions may be tax-deductible depending on your income and whether you have a workplace retirement plan.
- Contribution limit: $7,500 in 2026
- Deduction may be limited if covered by 401(k) and income is high
- Full investment control - stocks, bonds, ETFs, etc.
- Best for: Those without 401(k) access or wanting more investment options
Roth IRA
The Roth IRA is often called the "best retirement account" because qualified withdrawals are completely tax-free, and you can withdraw contributions (not earnings) at any time.
- Contribution limit: $7,500 in 2026
- Income limits: $153,000-$168,000 single / $242,000-$252,000 married (2026 phase-out per IRS Notice 2025-67)
- No required minimum distributions during your lifetime
- Best for: Young workers, those expecting higher future taxes, estate planning
Roth or Traditional: Which Tax Treatment?
Both 401(k)s and IRAs come in traditional (pre-tax) and Roth (after-tax) versions, so the account choice and the tax choice are separate decisions. For the 401(k) side in depth, see our Roth 401(k) vs Traditional 401(k) comparison. These factors usually point one way or the other:
| Factor | Leans Traditional | Leans Roth |
|---|---|---|
| Tax rate now vs in retirement | Higher now than you expect in retirement | Lower now than you expect in retirement |
| Career stage | Peak earning years | Early career, lower bracket |
| Need the deduction this year | Yes, you want the tax cut now | No, you can pay the tax now |
| Leaving money to heirs | Heirs pay income tax on what they withdraw | Heirs' qualified withdrawals are generally income-tax-free |
| Lifetime required distributions | Required from age 73 or 75 | None during your lifetime (Roth IRA and Roth 401(k)) |
Because no one can predict future tax rates, many people hold both kinds of account so they can choose which to draw from in retirement.
2026 Contribution Limits Compared
| Account | Base Limit | Age 50-59 / 64+ | Age 60-63 |
|---|---|---|---|
| 401(k) | $24,500 | $32,500 (+$8,000) | $35,750 (+$11,250) |
| Traditional IRA | $7,500 | $8,600 (+$1,100) | $8,600 (+$1,100) |
| Roth IRA | $7,500 | $8,600 (+$1,100) | $8,600 (+$1,100) |
| Combined Maximum | $32,000 | $41,100 | $44,350 |
Super catch-up
Ages 60-63 get an extra-large 401(k) catch-up contribution ($11,250 instead of $8,000) to accelerate savings during peak earning years.
The IRA limit and the 401(k) limit are separate, so you can reach both in the same year. Employer matching contributions do not count against your $24,500 employee limit. Instead, everything added to your 401(k) for the year (your deferrals plus employer contributions) is capped at the lesser of 100% of your pay or $72,000 in 2026. Catch-up contributions sit on top of that cap, for up to $80,000 at age 50 and over, or $83,250 at ages 60-63 (IRS: 401(k) contribution limits(opens in new tab)).
See the 401(k) calculator methodology for how the 401(k) figures in this comparison — contribution growth, employer match, and catch-up amounts — are calculated.
The Optimal Contribution Strategy
This guide uses one order throughout; the income bands in Section 9 and the examples in Section 10 apply it:
Step 1: 401(k) to Employer Match
Contribute enough to get your full employer match. This is an instant 50-100% return on your money. If your employer matches 50% up to 6%, contribute at least 6%.
Step 2: An IRA, or More 401(k)
Next, fund an IRA, up to $7,500 in 2026. Choose a Roth IRA if you are eligible and expect a higher tax rate later, or a traditional IRA if the deduction is worth more to you now (see the Roth-or-traditional table in Section 4 and the 2026 IRA limits and income ranges). An IRA usually wins when your plan's funds are expensive or the menu is thin; if your 401(k) offers low-cost funds you are happy with, putting this money into the 401(k) instead is just as reasonable (Sections 7 and 8).
Step 3: The 401(k) Up to Its Limit
Then raise your 401(k) contributions until you reach the $24,500 limit. This uses the larger tax-advantaged space only the 401(k) offers.
Step 4: Consider HSA and Taxable Accounts
If you've maxed both accounts, consider a Health Savings Account (if eligible) or taxable brokerage account for additional savings.
Why this order?
The match comes first because no other account adds money for you: the U.S. Department of Labor tells plan participants to find out how much they must contribute to get the full employer contribution, and FINRA notes that contributing less than your employer will match may mean passing up free money. After the match, the IRA-or-401(k) choice turns on fees, investment choice and your tax bracket, and the 401(k)'s higher limit takes whatever you can save beyond that. Sources: DOL, Top 10 Ways to Prepare for Retirement(opens in new tab); FINRA, The Beginner's Guide to 401(k)s(opens in new tab) (both read October 8, 2026).
Which should you fund first?
Enter your pay, your employer's match and what you can save to see the three steps above in dollars, with your own 401(k) and IRA limits.
First, put $7,500 in your 401(k) (6% of your pay) to collect the full $3,750 employer match. Next, put $7,500 in a Roth IRA. Then put $17,000 more in your 401(k), up to its $24,500 limit.
The IRA comes before more 401(k) because it opens a wider choice of funds; with low-cost 401(k) funds you are happy with, more 401(k) first is just as reasonable. A Roth IRA: you pay tax now and qualified withdrawals are tax-free. The 2026 limits are $24,500 for your own 401(k) contributions at your age and $7,500 across your IRAs; the match does not count against your 401(k) limit.
Source: IRS Notice 2025-67 (2026 401(k) and IRA limits and Roth IRA income ranges) (opens in new tab), read October 8, 2026. Calculated in your browser from the figures you enter.
When to Choose 401(k) Over IRA
A 401(k) is the better choice when:
- You have employer match available - Never leave free money on the table. Even a 3% match is an instant 50-100% return.
- You're a high earner - 401(k)s have no income limits, while Roth IRAs phase out at $153,000-$168,000 (single) / $242,000-$252,000 (married) in 2026.
- You want to maximize tax-deferred savings - The $24,500 limit is over 3x the IRA limit.
- You want simplicity - Automatic payroll deductions make saving effortless.
- Your 401(k) has good, low-cost funds - If your plan offers index funds with expense ratios under 0.1%, stick with it.
When to Prioritize IRA Over 401(k)
An IRA may be the better choice when:
- No employer match available - Without free money, the IRA's advantages become more compelling.
- Poor 401(k) investment options - If your plan only offers high-fee funds, an IRA gives you access to lower-cost options; compare your plan's expense ratios with the funds available to you in an IRA.
- You want full investment control - IRAs let you buy individual stocks, ETFs, bonds, and more.
- You're eligible for Roth IRA - Tax-free retirement income is powerful, especially if you're young.
- You're in a low tax bracket - Roth contributions make more sense when your current tax rate is lower than your expected retirement rate.
Income-Based Recommendations
Every income band follows the same three steps from Section 6: the employer match first, then an IRA or more 401(k), then the 401(k) up to its limit. Income changes which IRA fits step 2.
Under $50,000 Income
Priority: 401(k) to the match -> Roth IRA -> 401(k) to its limit.
- Even a small match comes first: it is an immediate return no IRA can offer
- You're likely in a low tax bracket now (12-22%), so a Roth IRA usually fits step 2
- Tax-free Roth growth is extremely valuable over decades
- Focus on building the Roth IRA habit early
$50,000 - $100,000 Income
Priority: 401(k) to the match -> Roth or traditional IRA -> 401(k) to its limit.
- Get the free money (match) first
- Pick Roth or traditional for step 2 by your bracket now versus the one you expect in retirement
- Fund the 401(k) instead of the IRA in step 2 if your plan's funds are low-cost
- Return to the 401(k) for additional tax-deferred savings
$100,000 - $168,000 Income (Single) / $100,000 - $252,000 (Married)
Priority: 401(k) to the match -> Roth IRA or more 401(k) -> 401(k) to its limit.
- Higher income means a larger tax benefit from each pre-tax 401(k) dollar, which makes "more 401(k)" a stronger step 2
- Still eligible for Roth IRA — at the full limit until income enters the phase-out range ($153,000-$168,000 single / $242,000-$252,000 married), then at a reduced limit
- A traditional IRA deduction is usually limited at this income if you are covered by a 401(k) (see below)
- Balance pre-tax and Roth for tax diversification
Over $168,000 Income (Single) / $252,000 (Married)
Priority: 401(k) to the match -> backdoor Roth IRA or more 401(k) -> 401(k) to its limit.
- You're above Roth IRA income limits, so a direct Roth IRA contribution is not available
- Fill your 401(k) to its limit ($24,500) in step 3 for significant tax savings
- Consider backdoor Roth IRA or Roth conversion strategy (see below)
- If available, use Roth 401(k) for tax-free growth (no income limits)
Traditional IRA Deductions When You Have a 401(k)
Anyone with earned income can contribute to a traditional IRA, but if you (or your spouse) are covered by a workplace plan such as a 401(k), the tax deduction for that contribution phases out as income rises. The phase-out range depends on your filing status and on which spouse is covered, and the IRS resets it each year. Our 2026 IRA contribution limits guide lists every range; if your income is above yours, a Roth IRA (or a backdoor Roth) is usually the more useful second account.
Real Examples: What Strategy to Use
Example 1: Entry-Level Worker
Sarah, 25, Marketing Coordinator
- Salary: $45,000
- 401(k) match: 3% (employer matches 100% up to 3%)
- Tax bracket: 12%
Recommended Strategy:
- Contribute 3% to 401(k) = $1,350/year + $1,350 match = $2,700 total
- Max Roth IRA = $7,500/year (tax-free growth for 40 years)
- If more savings capacity, increase 401(k) contribution
Why Roth priority: At 12% tax bracket, paying taxes now is cheap. In 40 years, Sarah may be in a higher bracket, making tax-free Roth withdrawals extremely valuable.
Example 2: Mid-Career Professional
Michael, 38, Software Engineer
- Salary: $125,000
- 401(k) match: 50% up to 6%
- Tax bracket: 24%
Recommended Strategy:
- Contribute 6% to 401(k) = $7,500/year + $3,750 match = $11,250 total
- Max Roth IRA = $7,500/year (still under the Roth income limit)
- Return to 401(k) with additional $17,000 to reach the $24,500 limit
- Total retirement savings: $32,000 + $3,750 match = $35,750/year
Why the IRA before more 401(k): Assuming Michael's plan has only average-cost funds, step 2 goes to a Roth IRA for tax diversification and wider fund choice. If his plan had low-cost index funds he liked, adding that $7,500 to the 401(k) instead would be just as reasonable; either way the match comes first and the 401(k) limit is filled last.
Example 3: High Earner
Jennifer, 45, Finance Director
- Salary: $200,000 (files single)
- 401(k) match: 100% up to 6%
- Tax bracket: 24%
Recommended Strategy:
- Contribute 6% to 401(k) = $12,000/year + $12,000 match (the full match)
- Backdoor Roth IRA = $7,500/year (since above the Roth income limit)
- Return to 401(k) with additional $12,500 to reach the $24,500 limit; consider Roth 401(k) for part of it (tax diversification)
- Total tax-advantaged savings: $44,000/year, including the $12,000 match
Tax savings from 401(k): $24,500 x 24% = $5,880 in reduced federal taxes.
Self-Employed Options
If you're self-employed or have freelance income, you have access to retirement accounts with much higher limits:
| Account | 2026 Limit | Who It's For | Key Features |
|---|---|---|---|
| Solo 401(k) | $72,000 | Self-employed with no employees | Highest limits, employee + employer contributions, loan option |
| SEP IRA | $72,000 | Self-employed or small business | Simple setup, employer-only contributions, must cover all employees |
| SIMPLE IRA | $17,000 | Small businesses (under 100 employees) | Lower admin costs, employee + employer contributions |
Best for solo freelancers
The Solo 401(k) offers the highest contribution limits and a Roth option. If you have no employees, it's typically the best choice.
Common Mistakes to Avoid
Mistake #1: Leaving employer match on the table
If your employer matches contributions, not contributing enough to get the full match is like turning down a raise. A 50% match is an instant 50% return. See our 401(k) savings benchmarks by age to check if you're on track.
Mistake #2: Not considering Roth when young
Young workers in low tax brackets should strongly consider Roth accounts. Tax-free growth over 30-40 years is incredibly powerful.
Mistake #3: Ignoring 401(k) fees
High expense ratios compound over time. If your plan's funds cost much more than low-cost index funds available in an IRA, that gap is a reason to fund the IRA after capturing the match.
Fee Impact Example
On a $500,000 balance over 20 years at a 7% annual return less the fee, compounded annually (6.97% and 6.25% net), rounded to the nearest $1,000:
- 0.03% fees: Final balance of $1,924,000
- 0.75% fees: Final balance of $1,681,000
- Difference: $243,000 lost to fees
The 7% return is an illustration, not a forecast. Check your plan's fee disclosure for the expense ratio of each fund you hold.
Mistake #4: Missing IRA contribution deadline
You have until the tax filing deadline (April 15, 2027 for 2026 contributions) to contribute to an IRA. Don't miss this deadline!
Mistake #5: Not doing backdoor Roth if eligible
High earners above the Roth IRA income limit can still contribute via the "backdoor" strategy. Don't skip this tax-free growth opportunity.
Frequently Asked Questions
Yes, you can contribute to both. In 2026, you can contribute up to $24,500 to a 401(k) and $7,500 to an IRA ($32,000 total). However, your traditional IRA deduction may be limited if you're covered by a workplace retirement plan and your income exceeds certain thresholds ($81,000-$91,000 for single filers in 2026).
A 401(k) offers larger immediate tax savings because of its higher contribution limit ($24,500 vs $7,500). Contributing $24,500 to a 401(k) in the 24% bracket saves $5,880 in taxes. However, the best strategy is to use both: contribute to your 401(k) up to the employer match, then max out a Roth IRA for tax-free retirement income, then return to max your 401(k).
Without a 401(k), contribute to an IRA ($7,500 limit in 2026). Choose a Roth IRA if your income is under $168,000 (single) or $252,000 (married) for tax-free retirement income. Roth IRA contributions phase out between $153,000-$168,000 (single) and $242,000-$252,000 (MFJ) per IRS Notice 2025-67. If you're self-employed, consider a SEP IRA or Solo 401(k) for much higher contribution limits (up to $72,000).
Choose Roth if you're in a lower tax bracket now than you expect in retirement (common for younger workers or those early in their careers). Choose traditional if you're in a high tax bracket now and expect lower taxes in retirement. Many financial advisors recommend having both for tax diversification - you can't predict future tax rates with certainty.
A backdoor Roth IRA is a strategy for high earners who exceed Roth IRA income limits. You contribute to a traditional IRA (there's no income limit for non-deductible contributions), then convert it to a Roth IRA. This allows anyone to get money into a Roth IRA regardless of income. Note: If you have existing traditional IRA funds, the "pro-rata rule" may create tax complications.
Yes, when you leave a job, you can roll your 401(k) into a traditional IRA (for pre-tax funds) or Roth IRA (for Roth 401(k) funds). This is called a "rollover" and maintains the tax-advantaged status. An IRA rollover typically gives you more investment options and potentially lower fees than leaving funds in an old 401(k). Just be sure to do a "direct rollover" to avoid withholding taxes.
Each has an edge. A Roth IRA offers more investment choices and lets you withdraw your contributions (not earnings) at any time without tax or penalty. A Roth 401(k) has a much higher limit ($24,500 vs $7,500 in 2026) and no income limit. Since 2024, neither requires withdrawals during your lifetime. Many people use both.
Your Action Plan
Step 1: Check your 401(k) match
Log into your employer's benefits portal or ask HR about your 401(k) match. Note the match percentage and the limit (e.g., "50% match up to 6%").
Step 2: Determine Roth IRA eligibility
Check if your income is below $168,000 (single) or $252,000 (married) to qualify for direct Roth IRA contributions (phase-out begins at $153,000 single / $242,000 MFJ in 2026). If above, research backdoor Roth IRA.
Step 3: Set contribution amounts
At minimum, contribute enough to get your full employer match. Then set up a Roth IRA contribution (try to automate monthly contributions of $625 to hit the $7,500 max).
Step 4: Choose your investments
Select low-cost index funds (target expense ratios under 0.2%). A target-date fund matching your expected retirement year is a good "set it and forget it" option.
Calculate Your 401(k) Growth
See how your 401(k) contributions will grow over time with employer match and compound interest.
Sources
- IRS Publication 590-A - Contributions to Individual Retirement Arrangements (IRAs)(opens in new tab)
- IRS Publication 590-B - Distributions from Individual Retirement Arrangements (IRAs)(opens in new tab)
- IRS - 401(k) Resource Guide and Contribution Limits(opens in new tab)
- U.S. Department of Labor - Employee Benefits and Retirement Plans(opens in new tab)
- IRS - Roth IRAs Overview(opens in new tab)
- IRS IR-2025-111 (Notice 2025-67) - 2026 401(k) and IRA limits and income phase-out ranges(opens in new tab)
- IRS - Retirement Topics: Required Minimum Distributions(opens in new tab)
- IRS - Retirement Topics: Loans(opens in new tab)
The limits, phase-out ranges, loan rules and Roth 401(k) distribution rule on this page were re-checked against these IRS sources in October 2026.
Important Disclaimer
Disclaimer: This content is for informational purposes only and does not constitute financial or tax advice. Contribution limits, income thresholds, and tax rules may change. Consider consulting with a qualified financial advisor or tax professional for personalized guidance based on your specific situation. Data current as of September 2026.
Content reviewed by Mark at Markco Labs. Learn more about our accuracy standards.