Both are tax-advantaged retirement accounts, but they work differently. 401(k) offers higher limits and employer match; IRA offers more investment choices. Most people should use both.
IRA vs. 401(k) Quick Comparison
| Feature | IRA | 401(k) |
|---|---|---|
| Who provides it | You open it yourself | Employer |
| 2026 contribution limit | $7,000 ($8,000 if 50+) | $23,500 ($31,000 if 50+) |
| Employer match | No | Often yes |
| Investment options | Nearly unlimited | Limited to plan choices |
| Fees | Usually low | Varies (can be high) |
| Access | Any brokerage | Through employer |
2026 Contribution Limits
| Account | Under 50 | 50 and Over |
|---|---|---|
| IRA | $7,000 | $8,000 |
| 401(k) | $23,500 | $31,000 |
| Combined max | $30,500 | $39,000 |
You can contribute to both — these limits are separate.
Traditional vs. Roth Versions
Both IRA and 401(k) have Traditional and Roth options:
| Tax Treatment | Traditional | Roth |
|---|---|---|
| Contribution | Pre-tax (deductible) | After-tax |
| Growth | Tax-deferred | Tax-free |
| Withdrawal in retirement | Taxed as income | Tax-free |
| RMDs | Required at 73 | None for Roth IRA |
| Best if | Tax rate higher now | Tax rate higher later |
The Optimal Contribution Order
- 401(k) up to employer match — Free money (100% instant return)
- Max out Roth IRA — Best investment options, tax-free growth
- Max out 401(k) — Highest contribution limits
- HSA (if eligible) — Triple tax advantage
- Taxable brokerage — After maxing tax-advantaged accounts
Employer Match: Free Money
| Match Type | Example | Free Money on $10K Salary |
|---|---|---|
| 100% up to 3% | Full match on first 3% | $300 |
| 50% up to 6% | Half match on first 6% | $300 |
| 100% up to 6% | Full match on first 6% | $600 |
Never leave match money on the table — it’s an instant 50-100% return.
Investment Options Comparison
IRA (You Choose)
- Any stock, bond, ETF, mutual fund
- Full access to Vanguard, Fidelity, Schwab funds
- Lowest-cost index funds available
- Real estate, commodities, alternatives (if desired)
401(k) (Plan Limits)
- Limited to 15-30 funds typically
- May have high-fee options
- Often includes target-date funds
- Quality varies by employer
Fee Impact Over Time
| Account | Expense Ratio | 30-Year Cost on $100K |
|---|---|---|
| IRA (VOO/VTI) | 0.03% | $900 |
| Good 401(k) | 0.10% | $3,000 |
| Bad 401(k) | 1.00% | $26,000 |
If your 401(k) has high fees, contribute only up to match, then prioritize IRA.
IRA Income Limits (2026)
Traditional IRA Deduction Phase-Out
| Filing Status | Full Deduction | Partial | No Deduction |
|---|---|---|---|
| Single (with workplace plan) | <$79,000 | $79-89K | >$89,000 |
| Married (with workplace plan) | <$126,000 | $126-146K | >$146,000 |
Roth IRA Contribution Phase-Out
| Filing Status | Full Contribution | Partial | No Contribution |
|---|---|---|---|
| Single | <$150,000 | $150-165K | >$165,000 |
| Married | <$236,000 | $236-246K | >$246,000 |
High earners can use backdoor Roth IRA strategy.
Solo 401(k) and SEP IRA
For self-employed individuals:
| Account | 2026 Limit | Best For |
|---|---|---|
| Solo 401(k) | $70,000 | Self-employed, no employees |
| SEP IRA | $70,000 | Simple setup, employer contributions only |
| SIMPLE IRA | $16,500 | Small businesses with employees |
When to Choose IRA
| Situation | Why IRA |
|---|---|
| No employer 401(k) | Only option |
| Bad 401(k) options | Better investments |
| Already got full match | More flexibility |
| Want Roth (no 401k Roth) | Tax-free growth |
| Self-directed investing | More control |
When to Use 401(k)
| Situation | Why 401(k) |
|---|---|
| Employer match available | Free money |
| High income (over IRA limits) | Still deductible |
| Want to save more than $7K | Higher limits |
| Mega backdoor Roth option | Up to $70K/year |
| Lawsuit protection | Better creditor protection |
Required Minimum Distributions (RMDs)
| Account | RMD Required? | Starting Age |
|---|---|---|
| Traditional IRA | Yes | 73 |
| Traditional 401(k) | Yes | 73 |
| Roth IRA | No | Never |
| Roth 401(k) | No (2024+) | — |
Roth accounts avoid forced withdrawals, giving more flexibility.
Withdrawal Rules
| Withdrawal Type | Traditional | Roth |
|---|---|---|
| Before 59½ | 10% penalty + taxes | Contributions: no penalty |
| After 59½ | Taxed as income | Tax-free |
| Early withdrawal exceptions | Yes (SEPP, etc.) | Yes (qualified distributions) |
401(k) Specific Rules
- Loans available (borrow from yourself)
- Age 55 exception (leave job at 55+)
- Harder to access than IRA
Rollover Options
When you leave a job:
| Option | Pros | Cons |
|---|---|---|
| Leave in old 401(k) | No action needed | Harder to manage |
| Roll to new 401(k) | Consolidation | Limited options |
| Roll to IRA | Best options, low fees | Lose 401(k) protections |
| Cash out | Immediate access | Taxes + 10% penalty |
Best choice for most: Roll to IRA for better investment options.
The Megabackdoor Roth
If your 401(k) allows after-tax contributions + in-service withdrawals:
- Contribute up to $70,000 total (employee + employer + after-tax)
- Convert after-tax portion to Roth
- Massive Roth savings opportunity
Check if your plan allows this.
Summary: Do Both
| Priority | Action | Annual Amount |
|---|---|---|
| 1 | 401(k) to match | ~$3,000-$7,000 |
| 2 | Max Roth IRA | $7,000 |
| 3 | Max 401(k) | Up to $23,500 |
| 4 | HSA (if eligible) | $4,300 |
| Total | — | $34,800+ |
Bottom Line
Use both accounts:
- 401(k) for: Employer match, higher limits, easy payroll deduction
- IRA for: Better investment options, more flexibility, lower fees
The ideal strategy: Get full 401(k) match, max out Roth IRA, then finish maxing 401(k). This optimizes both the free money from your employer and the superior investment options in an IRA.
For more IRA guidance, see IRA contribution limits and Roth IRA vs Traditional IRA. Return to the IRA hub.
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