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You have $10,000 to invest for retirement this year.
Should you put it in your 401k or your IRA?
Most people guess. Some go all-in on their 401k because it's automatic. Others prioritize their IRA because they heard it's "better."
Both are wrong.
There's an optimal order that maximizes tax benefits, employer contributions, and investment flexibility.
Here's the exact strategy—and why it works.
The Quick Answer: The Priority Order
Here's the order you should follow:
1. 401k up to employer match (instant 50-100% return)
2. Max out IRA ($7,000/year, better investment options)
3. Max out 401k (remaining $16,000/year to hit $23,000 limit)
4. Taxable brokerage (if you've maxed everything above)
This order captures free money, maximizes flexibility, then uses the tax shelter.
Let me explain why.
Step 1: 401k to Employer Match (Always First)
Employer match = free money.
Example:
Employer matches 50% up to 6% of salary.
Your salary: $80,000
You contribute: 6% = $4,800
Employer adds: 3% = $2,400
You just got a 50% instant return on $4,800.
No investment beats a guaranteed 50-100% return.
Even if your 401k has terrible investment options and high fees, the employer match makes it worth it.
Never skip this step.
Step 2: Max Out IRA ($7,000/year)
After getting the match, max your IRA before going back to your 401k.
Why IRA before more 401k?
1. Better investment options
401k:
- 10-25 funds chosen by your employer
- Often includes expensive actively managed funds
- Limited flexibility
IRA:
- Thousands of investment options
- Can buy individual stocks, ETFs, bonds, REITs
- Can choose Vanguard, Fidelity, Schwab (lowest fees)
2. Lower fees
401k:
- Average expense ratio: 0.5-1%
- Administrative fees: 0.5-1.5% annually
- Total: 1-2.5% in fees
IRA:
- Expense ratio: 0.03% (S&P 500 index fund)
- No administrative fees
- Total: 0.03% in fees
Over 30 years, 2% in fees costs you 40% of your returns.
3. Roth option without income limits (Backdoor Roth)
If you earn too much for direct Roth IRA contributions, you can do a backdoor Roth conversion through a Traditional IRA.
Can't do this with a 401k.
So the strategy: Get the match, then prioritize IRA.
Step 3: Go Back and Max 401k
After maxing IRA ($7,000), go back to your 401k.
2024 limits:
- 401k: $23,000
- Already contributed for match: ~$4,800
- Remaining space: $18,200
If you can afford it, fill up the remaining 401k space.
Why go back to 401k?
Because you've already captured:
- ✅ Employer match (free money)
- ✅ IRA benefits (flexibility, low fees)
Now you're just maximizing tax-advantaged space.
401k advantages:
- Much higher contribution limit ($23,000 vs $7,000)
- Payroll deduction (automatic, never see the money)
- Creditor protection (stronger than IRA in some states)
The Math: Following vs Ignoring This Order
Scenario: $15,000 to invest annually
Strategy A: All into 401k
- Employer match: $2,400
- Your contribution: $15,000
- Total saved: $17,400
- Fees: 1.5%
- After 30 years: ~$1,200,000
Strategy B: Optimal order (match → IRA → 401k)
- 401k to match: $4,800 (gets $2,400 match)
- Max IRA: $7,000
- Remaining to 401k: $3,200
- Total saved: $17,400
- Blended fees: 0.4% (lower due to IRA)
- After 30 years: ~$1,450,000
Following the optimal order = $250,000 more.
All from better investment options and lower fees in the IRA portion.
When to Skip IRA and Just Max 401k
IRA-first doesn't always make sense. Max 401k directly if:
1. Your 401k has great options
If your employer offers:
- Vanguard or Fidelity institutional funds
- Expense ratios <0.1%
- No administrative fees
Then your 401k is as good as an IRA. Just max the 401k.
2. You earn too much for IRA deductions
Traditional IRA deduction phases out if:
- Single: $77,000-$87,000
- Married: $123,000-$143,000
AND you have a 401k at work.
Above these limits, Traditional IRA contributions aren't deductible.
Roth IRA phases out at:
- Single: $146,000-$161,000
- Married: $230,000-$240,000
If you're over these limits and don't want to do backdoor Roth, just max the 401k.
3. You value simplicity
One account, automatic deductions, never think about it.
If that's worth 0.5-1% in extra fees to you, fine.
Roth 401k vs Roth IRA
Many 401k plans now offer Roth 401k option.
Should you use it?
Roth IRA advantages over Roth 401k:
- Better investment options
- Can withdraw contributions anytime (emergency access)
- No Required Minimum Distributions (RMDs)
- Can pass to heirs more easily
Roth 401k advantages over Roth IRA:
- Much higher contribution limit ($23,000 vs $7,000)
- No income limits
- Employer match (goes to Traditional 401k side)
The strategy:
If you can max both:
- Max Roth IRA: $7,000
- Contribute to Roth 401k: remaining amount
If you can only do one:
- Roth IRA if you're eligible (income limits)
- Roth 401k if you're over Roth IRA income limits
The Complete Priority List
Here's the full order of operations for retirement savings:
1. Employer 401k match (instant 50-100% return)
2. Pay off high-interest debt (>7% interest = guaranteed return)
3. Max HSA if eligible ($4,150 single, $8,300 family - triple tax advantage)
4. Max IRA ($7,000/year, better options and flexibility)
5. Max 401k (remaining $16,000-$18,000 to hit $23,000)
6. Mega backdoor Roth (if your 401k allows after-tax contributions)
7. Taxable brokerage (once all tax-advantaged space is full)
Most people never get past step 4-5. That's totally fine.
Traditional vs Roth: Which to Choose?
For both 401k and IRA, you can choose Traditional or Roth.
Traditional (pre-tax):
- Tax deduction now
- Pay taxes in retirement
- Better if your tax rate is higher now than retirement
Roth (after-tax):
- No tax deduction now
- Tax-free withdrawals in retirement
- Better if your tax rate is higher in retirement than now
Quick rule:
- Age 20-35, income <$80k → Roth
- Age 35-50, income $80k-$150k → Mix of both
- Age 50+, income >$150k → Traditional
Hedge your bets: Do both.
401k Traditional + IRA Roth gives you tax diversification.
What If You Can't Max Everything?
Most people can't max both 401k and IRA.
How much should you save?
Minimum: 15% of gross income
Aggressive: 20-25%
Super aggressive: 30%+
Example: $80,000 salary
15% = $12,000/year:
- 401k to match: $4,800 (gets $2,400 match)
- IRA: $7,000
- Total: $14,400 (includes match)
20% = $16,000/year:
- 401k to match: $4,800 (gets $2,400 match)
- IRA: $7,000
- Back to 401k: $6,600
- Total: $20,800 (includes match)
You don't need to max both to retire comfortably. But max the IRA if you can.
The Employer Match Trap
Some employers have a vesting schedule for their match.
Vesting = how long you must work there before the match is yours.
Example:
Year 1: 0% vested (match is not yours)
Year 2: 25% vested
Year 3: 50% vested
Year 4: 100% vested (all match is yours)
If you leave before year 4, you lose some or all of the match.
Still contribute enough to get the match. But know you might not keep it if you leave early.
Cliff vesting: Some employers do 0% until year 3, then 100%. If you leave at year 2, you get nothing.
Check your plan's vesting schedule.
401k vs IRA Investment Options Comparison
Here's what you typically get in each:
401k options:
- Target date funds (set and forget)
- S&P 500 index fund
- Total market index fund
- Bond funds
- International funds
- 5-20 total options
IRA options:
- All of the above, plus:
- Individual stocks
- Sector ETFs
- REITs
- Commodities
- International stocks
- Bonds
- High-yield savings
- Literally thousands of options
For most people, 401k options are fine. But IRA gives you flexibility if you want it.
The Real-World Strategy
Most people should do this:
Step 1: Contribute enough to 401k for full match
Step 2: Max Roth IRA if eligible, or backdoor Roth if not
Step 3: If you can save more, go back and increase 401k contributions
This captures:
- ✅ Free money (employer match)
- ✅ Tax-free growth (Roth IRA)
- ✅ Additional tax shelter (401k)
Simple, effective, optimal for 90% of people.
The Bottom Line
401k vs IRA isn't either/or. It's both, in the right order.
The optimal order:
- 401k to employer match
- Max IRA
- Max 401k
- Taxable brokerage
This order maximizes:
- Employer contributions (free money)
- Investment options (IRA flexibility)
- Tax-advantaged space (401k limits)
Don't overthink it. Follow this order and you're ahead of 90% of investors.
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Calculate Your Retirement Contributions
Use the Retirement Calculator to:
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- Compare Traditional vs Roth strategies
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Run your numbers before deciding where to invest.
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