Key Takeaways
- When changing jobs, you have 4 options for your old 401(k): leave it, roll to new 401(k), roll to IRA, or cash out. The first 3 are tax-free; cashing out is heavily penalized.
- Direct rollovers (trustee-to-trustee transfer) are simpler and avoid the 20% mandatory withholding. Indirect rollovers (check made out to you) trigger 20% withholding and 60-day deposit rule.
- Rolling to a new 401(k) is best if you want to keep the same investment options, access to institutional funds, or have loans on the old 401(k). Rolling to an IRA gives you more investment choice.
- If you have a Roth 401(k), you can only roll it to a Roth IRA or another Roth 401(k) — never to a Traditional IRA. Tax treatment must match.
- Cashing out a $50,000 401(k) at age 35 costs roughly $17,000 in taxes + 10% penalty. NEVER cash out unless facing financial ruin.
401(k) Rollover Guide: How to Move Your 401(k) When Changing Jobs
You're switching jobs. Your old 401(k) sits at Fidelity with $87,000 in it. Now you have a decision: what to do with it.
Most people make one of three mistakes: they cash it out (losing 30%+ to taxes and penalties), they leave it in the old 401(k) forever (forgetting it exists), or they roll it to the wrong place (creating tax problems).
The right answer depends on your situation — but there's almost always a tax-free, simple way to move it. This guide covers every option, the tax implications, and the exact steps to execute a clean rollover.
Your 4 Options When Leaving a Job
When you leave an employer (voluntarily or not), you have 4 choices for the money in that 401(k):
Option 1: Leave It in the Old 401(k)
If your balance is over $5,000, your old plan is usually required to let you keep the money there. You can no longer contribute, but the money continues to grow tax-deferred.
Pros:
- No action required (yet)
- No taxes or penalties
- Money continues to grow
- You can roll it later when convenient
Cons:
- Easy to forget about
- Limited to old plan's investment options
- Multiple old 401(k)s = multiple statements to track
- Old plan may have higher fees than your new options
When to choose this: When the old plan has great investment options and low fees, or when you need more time to decide.
Option 2: Roll to New Employer's 401(k)
If your new employer has a 401(k) plan, you can roll the old balance into it.
Pros:
- Consolidates all retirement money in one place
- Maintains 401(k) protections (e.g., creditor protection under ERISA, which is stronger than IRA protection in some states)
- Access to institutional funds and lower-cost options in some plans
- Easier to manage (one statement, one login)
- Loan provisions may be available
Cons:
- Limited to new plan's investment options
- May not be eligible to roll Roth 401(k) to Traditional 401(k) (or vice versa)
- If new plan has high fees, you're stuck with them
When to choose this: When the new plan has great options, you want consolidation, or you value the legal protections of 401(k) over IRA.
Option 3: Roll to an IRA
You can roll your 401(k) to a Traditional IRA (or Roth IRA if it's a Roth 401(k)) at any brokerage.
Pros:
- Massive investment choice (any mutual fund, ETF, stock, bond, etc.)
- Often lower fees than 401(k) plans
- More flexibility (backdoor Roth strategies, 72(t) SEPP for early retirement)
- Easier to manage at a top brokerage (Fidelity, Schwab, Vanguard)
- Can do partial rollovers if you have multiple accounts
Cons:
- Slightly less creditor protection than 401(k) (in some states, but most have similar protections)
- More temptation to trade
- May need to do a "pro-rata" calculation if you have after-tax contributions
When to choose this: When you want more investment choice, lower fees, or advanced strategies.
Option 4: Cash Out
You can take the money as a cash distribution. This is almost always the worst option.
Cost of cashing out a $50,000 401(k) at age 35 (24% federal bracket):
- 20% mandatory federal withholding: $10,000
- Additional income tax at filing: ~$2,000 (to make up the rest of the 24% bracket)
- 10% early withdrawal penalty: $5,000
- State tax (varies): ~$2,500
- Total cost: ~$19,500
- You keep: ~$30,500
When to choose this: Almost never. The only legitimate scenarios are: (1) facing financial ruin and need cash immediately, (2) under $1,000 and not worth rolling, (3) you have a 401(k) loan balance to pay off that exceeds your ability to repay.
Direct vs Indirect Rollover
When you roll money over, there are two methods:
Direct Rollover (Trustee-to-Trustee)
The money goes directly from your old 401(k) to your new 401(k) or IRA. You never touch the check.
Process:
- Contact the new plan/IRA custodian and open an account (if rolling to IRA)
- Request a "direct rollover" from your old 401(k) plan
- Provide the new account details
- Old plan sends the funds directly to the new account
- Money arrives in 1-3 weeks
Tax implications: None. No withholding, no 1099-R, no 60-day rule.
This is the recommended method.
Indirect Rollover (Check to You)
The old plan makes a check out to YOU, with 20% mandatory federal tax withholding. You have 60 days to deposit the full amount (including the 20% withheld) into the new account to avoid taxes and penalties.
Process:
- Request a distribution from your old 401(k)
- Old plan sends you a check, withholding 20% for federal taxes
- Within 60 days, deposit the check (and replace the 20% from other funds) into the new account
- File your tax return claiming the withholding
Tax implications: 20% is withheld at the time of distribution. You get it back (or get credit for it) on your tax return. But if you don't complete the rollover within 60 days, the entire distribution is taxable AND subject to the 10% penalty.
This is the old way and creates more risk. Avoid unless your plan doesn't offer direct rollovers.
Step-by-Step: How to Roll Over a 401(k) to an IRA
Step 1: Open an IRA at a Top Brokerage
Choose Fidelity, Schwab, or Vanguard. All three offer:
- No account minimums
- No commissions on stock/ETF trades
- Wide range of low-cost index funds
- Easy online account opening
Account type:
- Traditional 401(k) → Traditional IRA (or Roth IRA if you do a conversion)
- Roth 401(k) → Roth IRA
Step 2: Initiate the Direct Rollover
Contact your OLD 401(k) plan administrator. Most have an online portal or a phone number.
Request a "direct trustee-to-trustee rollover" to your new IRA. Provide:
- Your new IRA account number
- The receiving institution's wiring instructions
- How much you want to roll over (full balance or partial)
Step 3: Wait for the Transfer
Most rollovers complete in 1-3 weeks. The old plan may take 5-10 business days to process, then 1-3 days for the transfer.
Step 4: Choose Your Investments
Once the funds arrive in your new IRA, you need to choose investments. Otherwise, the money sits in a money market fund earning 4-5% (which is fine temporarily).
For most people, the simplest choice: Put 100% in a low-cost total stock market index fund (VTI, VTSAX, FSKAX, etc.). You can always rebalance later.
Step 5: Update Your Beneficiaries
Don't forget to name beneficiaries on the new IRA. Without them, the money goes through probate.
Special Cases
Rolling a Roth 401(k)
You can only roll a Roth 401(k) to:
- A Roth IRA
- Another Roth 401(k)
NOT to a Traditional IRA or Traditional 401(k). The "Roth" tax treatment must be preserved.
Rolling a 401(k) with After-Tax Contributions
If you made after-tax contributions to a Traditional 401(k) (rare, but possible via the "mega backdoor Roth" strategy), the rollover has two parts:
- Pre-tax portion → Traditional IRA (or Traditional 401(k))
- After-tax portion → Roth IRA (or back to Roth 401(k))
This is more complex and may require working with a tax professional. Most people don't have after-tax 401(k) contributions, so this is uncommon.
Rolling a 401(k) with a Loan Outstanding
If you have an outstanding 401(k) loan and you're leaving the job, the loan typically becomes due immediately (or within 60-90 days). If you don't repay, the unpaid balance is treated as a distribution — subject to income tax AND the 10% penalty if under 59½.
To avoid this, you can:
- Repay the loan in full before leaving
- Roll the loan balance into the new 401(k) (if the new plan accepts rollovers with loans)
- Take a distribution to cover the loan (heavily penalized)
Partial Rollovers
You don't have to roll over the entire 401(k) balance. You can do a partial rollover — move some of the money, leave the rest.
This can be useful for:
- Converting a portion to a Roth IRA (Roth conversion ladder strategy)
- Maintaining access to specific old-plan investment options
- Spreading tax consequences across multiple years
Common Mistakes to Avoid
Cashing out. Almost always a bad idea. The 30%+ in taxes and penalties is rarely worth it.
Forgetting the 60-day rule. If you do an indirect rollover, you have 60 days to complete the transfer. Miss it and you owe taxes + 10% penalty on the entire amount.
Rolling to a Traditional IRA when you should roll to a Roth IRA (or vice versa). The tax treatment of the source and destination must match. Rolling a Traditional 401(k) to a Roth IRA is a "conversion" — it's allowed but taxable.
Not updating beneficiaries. Without a named beneficiary, your IRA goes through probate. Update beneficiaries on the new account.
Choosing the wrong IRA provider. Some IRAs have high fees, limited investment options, or hidden costs. Stick with Fidelity, Schwab, or Vanguard for most cases.
Missing the pro-rata rule for backdoor Roth. If you have other Traditional IRA money, a backdoor Roth conversion may be partially taxable due to the pro-rata rule. This doesn't apply to direct 401(k) rollovers — only to backdoor Roth conversions.
What's Next
If you have an old 401(k) from a previous job, here's the priority order:
- Check the old plan's options and fees — if they're good, you can leave it
- Compare to your new 401(k) options — if the new plan is better, roll there for consolidation
- Consider an IRA for maximum investment choice — usually the best option if you want low fees and flexibility
- Avoid cashing out at all costs — the 30%+ penalty is rarely worth it
The right answer depends on your situation, but the simple default is: roll to an IRA at Fidelity, Schwab, or Vanguard, and invest in a low-cost index fund. This gives you the most flexibility, the lowest fees, and the easiest management.
Final Thoughts
Rolling over a 401(k) is a routine financial task that should take 1-2 hours of your time. The most common mistake is procrastinating — leaving old 401(k)s scattered across multiple plans, or worse, cashing them out.
If you have old 401(k)s from previous jobs, take 30 minutes this week to:
- Log into each old 401(k) portal
- Note the balance and investment options
- Decide: leave, roll to new 401(k), or roll to IRA
- Execute the rollover (most can be done online in 5-10 minutes)
The longer you leave old 401(k)s scattered, the more you risk: forgetting about them, paying high fees on old plans, losing track of beneficiaries, or accidentally triggering a taxable event.
Consolidation is the goal. One rollover to a low-cost IRA at Fidelity, Schwab, or Vanguard, invested in a simple total market index fund, is the path of least resistance and maximum benefit.
Frequently Asked Questions
What is a 401(k) rollover? +
A 401(k) rollover is moving your retirement savings from one 401(k) plan to another (or to an IRA) without triggering taxes or penalties. There are two types: direct rollover (the money transfers trustee-to-trustee, no tax withholding) and indirect rollover (a check is made out to you, with 20% mandatory tax withholding, and you have 60 days to deposit it into a new account). Direct rollovers are strongly preferred because they're simpler and avoid the withholding trap.
Should I roll my 401(k) to a new employer's 401(k) or to an IRA? +
It depends on your priorities. Roll to a new 401(k) if: (1) you want to consolidate accounts, (2) the new plan has better investment options or lower fees, (3) you want access to institutional funds not available in IRAs, or (4) you have loans on the old 401(k) you want to preserve. Roll to an IRA if: (1) you want more investment choice (mutual funds, ETFs, individual stocks), (2) you want more flexibility (Roth IRA conversions, backdoor Roth strategies), or (3) you want lower fees than the 401(k) plan offers.
Can I roll a Roth 401(k) to a Traditional IRA? +
No. You can only roll a Roth 401(k) to a Roth IRA or another Roth 401(k). The tax treatment must match — Roth money (after-tax) can only go to Roth accounts (after-tax). Similarly, you can only roll a Traditional 401(k) to a Traditional IRA or another Traditional 401(k). Mixing them triggers a taxable event. The exception: you can roll a Traditional 401(k) to a Roth IRA, but it's a conversion — the entire amount is taxed as ordinary income in the conversion year.
What happens if I cash out my 401(k) when changing jobs? +
Cashing out a 401(k) is almost always a bad idea. You'll pay: (1) mandatory 20% federal tax withholding at the time of cash-out, (2) ordinary income tax on the entire distribution (often another 10-15% at tax time), (3) 10% early withdrawal penalty if you're under age 59½, and (4) state income tax where applicable. Total cost on a $50,000 cash-out at age 35 in the 24% federal bracket: ~$17,000 in taxes + penalty. You'll keep about $33,000. Most people also lose years of tax-deferred growth.
How long does a 401(k) rollover take? +
A direct rollover typically takes 1-3 weeks. The old plan processes the distribution, sends the funds to the new plan or IRA custodian, and the new account is funded. Some plans have 30-day processing windows. Indirect rollovers must be completed within 60 days to avoid taxes and penalties. Delays in either case are usually due to the old plan's processing time. Most modern plans offer online rollover initiation and complete the process in 1-2 weeks.
