You changed jobs. The new HR paperwork is done. Your old 401(k) is still sitting at the former employer, quietly waiting for you to decide whether ignoring it counts as a strategy.
Sometimes leaving it there’s perfectly fine. Sometimes it’s not.
You usually have four broad choices
1. leave it in the old employer’s plan 2. roll it into the new employer’s plan 3. roll it into an IRA 4. take a cash distribution
The fourth option is usually the one with the most immediate tax consequences.
The first three deserve an actual comparison.
Before anything else: did you leave at 55 or later?
If you separated from that employer during or after the year you turned 55, the “Rule of 55” may allow distributions from that former employer’s qualified plan without the usual 10% additional tax. That exception generally does not follow the money into an IRA. So if you may need access before 59½, don’t roll the account out automatically. This is one of those tiny retirement rules with a very non-tiny consequence.
Also check for an outstanding 401(k) loan
Leaving a job with an unpaid plan loan can create a plan loan offset and separate rollover issues.
Find out how the plan handles it before moving the account.
Don’t discover the tax treatment after the check arrives.
Option 1: leave it where it is
This can be sensible if:
- fees are low
- investments are good
- Rule of 55 access matters
- you value the plan’s creditor protections
The downside is mostly practical: another account to track, another beneficiary designation to remember, another plan that may change later.
Option 2: move it to the new employer’s plan
This can simplify your retirement accounts.
But not every plan accepts incoming rollovers, and the investment menu may be better or worse than the old one.
Compare before consolidating just for the pleasure of having one login.
Option 3: roll it to an IRA
An IRA can offer more investment choices and more control over the provider. But it can also affect other tax strategies. One example: moving pretax 401(k) money into a traditional IRA can affect the federal pro-rata calculation for Roth conversions.
It can also eliminate Rule of 55 access. “More flexible” isn’t the same as “automatically better.”
Option 4: cash it out
A cash distribution generally puts untaxed amounts into taxable income. Before 59½, an additional 10% tax may apply unless an exception applies. And once the money leaves the retirement account, it stops getting that tax-advantaged treatment.
Calculate the cost before doing this. The number on the account screen isn’t necessarily the number you keep.
If you roll it, use a direct rollover when possible
A direct rollover sends the money to the receiving plan or IRA rather than paying it to you personally. That generally avoids the mandatory 20% federal withholding that often applies to eligible taxable rollover distributions paid directly to you. One detail people miss: a rollover check can still be “direct” even if you physically receive it, if it’s made payable to the receiving institution for your benefit. What matters is who the check is payable to.
And after the rollover: make sure it’s invested
This sounds almost insulting. It’s not. Money can arrive in the new account and sit in cash.
Weeks. Months.
Longer. After any rollover, confirm:
- the money arrived
- the allocation is what you intended
- the beneficiary designation is set
Moving the account isn’t the end of the job.
Related Reading
401(k) vs. IRA: What’s the Difference and Which Do You Need?
How to Start Investing with Very Little Money
Sources & Last Updated
Last updated: August 2026. General educational information only; not personalized financial, tax, or legal advice.