What do I do with my 401(k) when I leave

What do I do with my 401(k) when I leave?

When you leave a job, your 401(k) does not have to move, but you have a decision to make about it, and one part of that decision is a one-way door. Get the sequence wrong and you can permanently give up an option that was worth keeping. So before anything else, understand the door, because it closes quietly and it does not reopen.

The one-way door: the Rule of 55

Here is the rule almost nobody knows until it is too late. If you separate from your job in or after the calendar year you turn 55, the tax code generally lets you take money out of that employer's 401(k) without the usual early withdrawal penalty that applies before age 59 and a half. This is often called the Rule of 55, and it exists in the section of the tax code that governs early distributions.

That penalty-free access applies to the plan you just left. It is a real benefit if you are in your late fifties, laid off, and might need to draw on retirement savings before 59 and a half to bridge a gap.

And here is the trap. The moment you roll that 401(k) into an IRA, the Rule of 55 no longer applies. An IRA follows the standard rule, where penalty-free access generally waits until 59 and a half. So if you are 55 or older, separated from the job, and you roll your 401(k) to an IRA out of habit or on autopilot, you can permanently forfeit penalty-free access to your own money in the years you might most need it. The rollover is the door closing. It does not reopen.

This does not mean you should never roll it over. It means that if you are in that age window, the decision of whether and when to roll deserves real attention before you do it, not after. For someone who has other resources and will not touch the money until well after 59 and a half, rolling may be perfectly fine. For someone who might need a bridge, keeping the 401(k) in place to preserve that access can matter a great deal. The point is to decide on purpose.

What if you are younger than 55?

The Rule of 55 only helps if you separated in or after the year you turned 55. If you are younger and think you may need to reach retirement money before 59 and a half, there is a narrow path, and it comes with real hazards.

The tax code allows what are called substantially equal periodic payments, often referred to by the section that governs them, 72(t). In broad terms, it lets you take a set series of withdrawals before 59 and a half without the early withdrawal penalty. That is the appeal. The danger is in the word substantially equal. Once you begin, you are generally locked into that payment schedule for a set number of years or until you reach 59 and a half, whichever comes later, and if you break the schedule, the penalties you avoided can come back and apply to what you withdrew. It is rigid, it is unforgiving of mistakes, and it is easy to get wrong.

For most people who were just laid off and are years away from 59 and a half, this is not the right tool, precisely because it commits you to fixed withdrawals at exactly the moment your income and your timeline are least certain. Locking into a multi-year payment schedule when you do not yet know when your next job starts, or what it pays, is usually the wrong bet.

I am including it here because you should know the door exists, not because you should walk through it on your own. If you are under 55 and genuinely think you need to access retirement funds early, that is a conversation to have with me and your CPA before you take a single dollar, because the cost of setting it up wrong is far higher than the penalty it was meant to avoid. There are almost always other places to look first, and the whole point of the planning is to find them before touching money that carries this kind of tripwire.

Your options, plainly

Setting the age question aside, you generally have a few choices for a 401(k) when you leave.

You can leave it where it is. Many plans let former employees keep their balance in the plan. Your investments stay as they are, and you preserve any plan-specific features, including the Rule of 55 access if you are in that window. The tradeoff is that you no longer contribute, and you are living with that plan's investment menu and costs.

You can roll it to an IRA. This gives you a wider range of investment choices and consolidates your retirement money in one place, which many people prefer for simplicity. The tradeoff is the one above: you give up the Rule of 55 access, and you take on the responsibility of managing a broader set of choices.

You can roll it into a new employer's plan, if you have a new job and the plan accepts it. This keeps things consolidated and keeps the money in the 401(k) system, which may preserve some of the same features.

You can cash it out. This is almost always the most expensive choice. Taking the money directly generally means income tax on the full amount, plus the early withdrawal penalty if you are under the age threshold and no exception applies. A balance that took years to build can lose a large share to taxes and penalty in a single step. In most situations this is the option to avoid, but people reach for it under financial pressure after a layoff, which is exactly when the cost hurts most.

One related trap catches people who borrowed from their 401(k) while employed. If you leave with an outstanding loan balance, that balance often has to be repaid within a short window after you separate, and if it is not, it is generally treated as a taxable distribution, with the early withdrawal penalty on top if you are under the age threshold. That means a loan you took years ago can turn into a tax bill the year you are laid off, stacking on top of everything else. If you have an outstanding 401(k) loan, find out your repayment deadline early, because it is one more thing that lands in the same tax year and it is easy to forget in the noise.

How the pieces fit together

The 401(k) decision does not sit by itself. It connects to the other decisions in a severance, particularly the tax one. A distribution adds to your taxable income for the year, stacking on top of severance and any other income, which ties directly to the withholding gap that surprises people. The timing of any move, and whether you touch the money at all, is part of the same tax picture as the rest of your package.

That is why this is worth thinking through as a whole rather than piece by piece. The right answer for a 45 year old with a new job lined up is different from the right answer for a 57 year old bridging an uncertain search, and the difference is not obvious until you lay it out.

Specific contribution limits, age thresholds, and figures change over time, so I keep those on a separate page I update rather than putting them here where they would go stale. What does not change is the shape of the decision: leave it, roll it, or take it, with the Rule of 55 as the one-way door to check before you move anything if you are 55 or older.

This is a decision worth seeing in the context of your whole picture, especially the tax year it lands in. If you want to walk through what to do with yours, that is work I am glad to do with you, and with your accountant when the tax side is significant. Start a conversation.

This material was created to provide accurate and reliable information on the subjects covered but should not be regarded as a complete analysis of these subjects. It is not intended to provide specific legal, tax or other professional advice. The services of an appropriate professional should be sought regarding your individual situation.