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LearnInvestingIRA vs. 401(k): Which Retirement Account Is Right for You?
Investing

IRA vs. 401(k): Which Retirement Account Is Right for You?

Both save you thousands in taxes, but they work differently. Here is exactly when to use each one โ€” and the optimal order for maximizing both.

DF

David Freedland

CFPยฎ ยท Senior Editor, Personal FinanceยทUpdated April 3, 2026ยท11 min read

You Do Not Have to Choose Just One

The IRA vs. 401(k) question is not either/or for most people. The optimal strategy uses both in a specific order. But understanding how each works โ€” and their limitations โ€” is essential for making the most of your retirement savings.

401(k) Basics

A 401(k) is an employer-sponsored retirement account. Money goes in directly from your paycheck, reducing your taxable income.

2026 contribution limit: $23,500 ($31,000 if 50+)

Key features:

  • Contributions are pre-tax (traditional) or after-tax (Roth 401k)
  • Employer match = free money (typically 3โ€“6% of salary)
  • Limited investment options (chosen by your employer)
  • Early withdrawal penalty of 10% before age 59ยฝ
  • Required minimum distributions (RMDs) starting at age 73

IRA Basics

An Individual Retirement Account (IRA) is a personal account you open yourself at any brokerage. You choose your own investments from the entire market.

2026 contribution limit: $7,000 ($8,000 if 50+)

Two types:

Traditional IRA โ€” Contributions may be tax-deductible. Growth is tax-deferred. Withdrawals in retirement are taxed as income. Best if you expect your tax rate to be lower in retirement.

Roth IRA โ€” Contributions are after-tax (no deduction). Growth and withdrawals are completely tax-free in retirement. No RMDs. Best if you expect your tax rate to be higher in retirement (most young people).

Head-to-Head Comparison

Feature401(k)Traditional IRARoth IRA
2026 contribution limit$23,500$7,000$7,000
Tax benefitPre-tax contributionsTax-deductible contributions*Tax-free withdrawals
Employer matchYesNoNo
Investment choicesLimited (employer plan)UnlimitedUnlimited
Income limitsNoneDeduction phases out if covered by employer plan$161,000 single / $240,000 married
RMDsYes (age 73)Yes (age 73)No
Early withdrawal10% penalty + tax10% penalty + taxContributions anytime, penalty-free

*Traditional IRA deduction phases out at higher incomes if you also have a 401(k).

The Optimal Contribution Order

For most people, this is the priority sequence:

1. 401(k) up to the employer match

If your employer matches 50% of contributions up to 6% of salary, contribute at least 6%. On a $70,000 salary, that is $4,200/year from you and $2,100 free from your employer. No investment in the world guarantees a 50% instant return.

2. Max out a Roth IRA ($7,000)

After capturing the full match, redirect to a Roth IRA. Tax-free growth for decades is incredibly powerful for young investors, and you choose your own low-cost index funds instead of being limited to your employer's plan options.

3. Go back and max the 401(k) ($23,500)

After the Roth IRA is maxed, increase 401(k) contributions toward the $23,500 limit. The tax deduction on pre-tax contributions reduces your current tax bill.

4. Taxable brokerage account

Once both are maxed ($30,500 total), invest additional savings in a standard brokerage account. You will pay capital gains taxes, but there are no contribution limits or withdrawal restrictions.

When to Choose Traditional vs. Roth

Choose Roth if:

  • You are early in your career and in a lower tax bracket
  • You expect your income (and tax rate) to rise over time
  • You want tax-free withdrawals in retirement with no RMDs
  • You value flexibility (Roth IRA contributions can be withdrawn anytime)

Choose Traditional if:

  • You are in a high tax bracket now and expect it to drop in retirement
  • You need the immediate tax deduction to reduce this year's tax bill
  • You are close to retirement and the time horizon for Roth conversion is short

Not sure? Split contributions between both. The diversification between pre-tax and post-tax accounts gives you flexibility to manage your tax bill in retirement.

FAQs

Can I have both a 401(k) and an IRA? Yes. You can contribute to both in the same year. The limits are separate โ€” $23,500 for 401(k) and $7,000 for IRA.

What happens to my 401(k) if I change jobs? You have four options: leave it with your old employer, roll it into your new employer's 401(k), roll it into an IRA (usually the best option for investment flexibility), or cash it out (worst option โ€” taxes + 10% penalty).

What is a backdoor Roth IRA? If your income exceeds Roth IRA limits, you can contribute to a Traditional IRA (non-deductible) and immediately convert it to a Roth IRA. This is legal and commonly used by high earners. Consult a tax professional to avoid the pro-rata rule.

How much should I have in my 401(k) by age? A common benchmark: 1x salary by 30, 3x by 40, 6x by 50, 8x by 60. These are guidelines, not rules. The important thing is to contribute consistently and increase your rate over time.

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About the author

David Freedland

CFPยฎ ยท Senior Editor, Personal Finance

David Freedland has over 12 years of experience reviewing consumer financial products across credit, lending, insurance, and investing. He has contributed to multiple personal finance publications. His methodology focuses on total cost of ownership, not promotional rate windows.

Full bio & credentials โ†’

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In this guide

  • You Do Not Have to Choose Just One
  • 401(k) Basics
  • IRA Basics
  • Head-to-Head Comparison
  • The Optimal Contribution Order
  • When to Choose Traditional vs. Roth
  • FAQs