By SR Staff
You've just left your job, whether by retirement or by choice, and there's a decision sitting in your inbox that's easy to put off: what happens to the 401(k) you spent years building? Unlike a paycheck or a benefits package, this one doesn't come with a deadline reminder. But the choice you make — or don't make — has real consequences for your fees, your investment options, and how easily you can access your money later.
There's no single right answer here. The best move depends on your new employer's plan (if you have one), your account balance, and how hands-on you want to be with your investments. Here's how to think through each option clearly.
Option 1: Leave It With Your Former Employer
If your balance is above $7,000, most plans will let you leave your 401(k) exactly where it is. This is the path of least resistance, and for some people, it's genuinely fine. If your old plan has strong, low-cost index fund options, this can be a reasonable place to park the money temporarily.
The downside is that you lose a bit of control. You can no longer contribute to the account, you're stuck with whatever investment menu the plan offers, and you'll need to keep track of login credentials and paperwork from an employer you no longer work for. Over the course of a 20- or 30-year retirement, that's a lot of accounts to juggle if you've changed jobs several times.
Leaving it in place tends to make the most sense as a short-term holding pattern, not a permanent plan, especially once you have multiple old 401(k)s scattered across former employers.
Option 2: Roll It Into an IRA
Rolling your 401(k) into an IRA is the most common choice for retirees, and for good reason. IRAs typically offer a far wider menu of investment choices than an employer plan, often at lower cost. You also consolidate old accounts into one place, which makes required minimum distributions, rebalancing, and estate planning simpler down the road.
You'll generally choose between a traditional IRA and a Roth IRA rollover. A traditional IRA rollover is tax-free and preserves the tax-deferred status of your money. A Roth rollover means paying income tax on the converted amount now, in exchange for tax-free withdrawals later. If you're unsure which structure fits your situation, our Roth IRA vs. Traditional IRA comparison breaks down the tradeoffs in more detail.
Some retirees also use the rollover moment to convert a portion of an old 401(k) into a Roth account, particularly in early retirement years when income is temporarily lower. If that's on your radar, it's worth reading our guide on Roth conversion strategy before you file the paperwork, since the tax math depends heavily on timing.
One important detail: always request a direct, trustee-to-trustee rollover. If the check gets made out to you personally, your old plan is required to withhold 20% for taxes, and you'll have only 60 days to deposit the full original amount — including the withheld portion — into the new account to avoid taxes and penalties.
Option 3: Roll It Into Your New Employer's Plan
If you're changing jobs rather than retiring, and your new employer's 401(k) accepts incoming rollovers, this can be a smart consolidation move. It keeps your retirement savings inside the protective umbrella of ERISA, which offers stronger creditor protection in some states than IRAs do.
It also matters if you plan to keep working past age 73. Money in a current employer's 401(k) is generally exempt from required minimum distributions as long as you're still employed there and don't own more than 5% of the company. That exemption doesn't apply to IRAs or old 401(k)s.
The tradeoff is the same one you'd face leaving money in an old plan: you're limited to whatever funds the new plan offers, and those options are sometimes narrower and more expensive than what you'd get with an IRA.
A Few Things to Watch Out For
Whichever direction you lean, a few details are worth double-checking before you move anything:
- Employer stock: If your 401(k) holds significantly appreciated employer stock, ask about net unrealized appreciation (NUA) rules before rolling it into an IRA — cashing out that stock a certain way can result in better long-term tax treatment.
- Fees: Compare the expense ratios in your old plan, your new plan, and a rollover IRA. Small percentage differences compound significantly over 20-plus years.
- Loans: If you have an outstanding 401(k) loan, leaving your job typically triggers a repayment deadline. Missing it turns the unpaid balance into a taxable distribution.
- Cash-outs: Cashing out a 401(k) before age 59½ generally means ordinary income tax plus a 10% early withdrawal penalty. It's rarely worth the short-term cash unless you're facing a genuine emergency.
Making the Decision
For most people retiring or leaving a job for good, rolling an old 401(k) into an IRA offers the best combination of investment flexibility, cost control, and simplicity. If you're still working elsewhere and want stronger creditor protection or plan to delay RMDs past 73, keeping money in an active employer plan can make more sense. Leaving funds in a former employer's plan should generally be treated as a temporary parking spot, not a long-term strategy.
Whatever you choose, don't let the decision sit indefinitely by default. Old 401(k) accounts are easy to lose track of, and the fees and investment limitations of "doing nothing" add up quietly over time. Take an afternoon, compare your options against the details above, and get your money working in the account that actually fits your plan.
Written by: Seeking Retirement