No, your 401(k) does not automatically transfer to a new job. The account stays with your former employer’s plan administrator until you tell it where to go, and you have four choices: leave the money in the old plan, roll it into your new employer’s 401(k), roll it into an IRA, or cash it out. The first three keep the tax shelter intact. The fourth is where people lose the most money.
What Happens to the Account After You Leave
Everything you contributed from your own paycheck is yours the day you walk out. Employer matching contributions are different: those vest on the schedule your plan sets, and anything unvested when you leave is forfeited. Your plan’s summary description tells you which schedule applies.
If your vested balance is small, the old plan may not let you sit indefinitely. Under a threshold expanded by the SECURE 2.0 Act, plans can force out a departing employee whose vested balance is under $7,000.1Internal Revenue Service. Safe Harbor Explanations – Eligible Rollover Distributions For amounts between $1,000 and $7,000, the plan typically rolls the balance into an IRA in your name if you give no instructions. Under $1,000, you may just receive a check, which counts as a taxable distribution the moment it’s cut.
SECURE 2.0 also created a framework letting certain providers move those small forced-out balances from a default IRA into your new employer’s plan automatically, provided you don’t opt out after notice.2Federal Register. Automatic Portability Transaction Regulations For most account sizes, though, nothing moves until you initiate it.
Your Four Options for the Old 401(k)
Leave It Where It Is
If your balance clears the plan’s mandatory distribution threshold, you can leave it alone. It keeps growing tax-deferred, keeps its strong federal creditor protection as an ERISA plan, and requires no paperwork. You lose the ability to contribute, you’re stuck with the old plan’s investment menu, and you’ll have another account to manage.
Roll It Into Your New Employer’s Plan
If the new plan accepts incoming rollovers, this consolidates everything into one ERISA-protected account. Ask your new HR or plan administrator whether transfers are allowed before you start paperwork, because not every plan takes them.
Roll It Into an IRA
An IRA at a bank or brokerage gives you far more investment choices than any employer plan.3Office of the Law Revision Counsel. 26 USC 408 – Individual Retirement Accounts The money stays tax-deferred and you choose the custodian. One trade-off worth knowing: outside of bankruptcy, IRA creditor protection depends on your state’s law, while a 401(k) is shielded from most creditor claims under federal law.4Office of the Law Revision Counsel. 29 USC 1056 – Form and Payment of Benefits Funds rolled from a 401(k) into an IRA keep unlimited bankruptcy protection.
Cash It Out
Taking the money in hand ends the tax shelter. The full amount is ordinary income for the year.5Internal Revenue Service. 401(k) Resource Guide – Plan Participants – General Distribution Rules If you’re under 59½, an additional 10% early withdrawal penalty applies.6Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions Between federal income tax, the penalty, and state income tax, a $50,000 balance can easily net you $30,000 or less.
Direct Rollover vs. Indirect Rollover
How you move the money matters as much as where it goes.
In a direct rollover, the old plan sends the funds straight to your new 401(k) or IRA custodian. You never touch the money, so nothing is withheld and no penalty applies.7Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions The check is made payable to the receiving custodian using “for the benefit of” (FBO) language followed by your name and account number.
In an indirect rollover, the plan writes the check to you. The administrator is required to withhold 20% for federal taxes.8eCFR. 26 CFR 1.402(c)-2 – Eligible Rollover Distributions You then have 60 days to deposit the full pre-withholding amount into a qualified retirement account.7Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
Here’s the trap. If you had $50,000 in the plan and $10,000 was withheld, you received $40,000 but still have to deposit $50,000 into the new account within 60 days. The missing $10,000 has to come from your own pocket; you get it back as a tax refund after you file. If you only deposit the $40,000 you received, the other $10,000 is treated as a taxable distribution and may also trigger the 10% penalty.
Miss the 60-day window entirely and the whole distribution becomes taxable. A direct rollover avoids all of this and is what most administrators will steer you toward.
How to Start a Direct Rollover
Before filling out any forms, get three pieces of information from your new plan or IRA custodian: the legal name of the receiving institution, your new account or participant number, and the mailing address for incoming rollovers. Some custodians will also give you a letter of acceptance to send along.
Then go to your former employer’s benefits portal or plan administrator and pull the distribution forms. You’ll specify the amount to transfer, list the receiving institution’s details, and check the box for a direct rollover rather than a cash distribution. The check will be made payable to the new custodian FBO you (for example, “Fidelity Investments FBO Jane Smith, Account #12345”). Verify every field. A wrong account number can delay the transfer by weeks or bounce it back.
Timelines vary. Some administrators process online requests within a few business days; others require mailed forms and take two weeks or more. Ask what to expect, and follow up if the receiving institution hasn’t confirmed the deposit in that window.
Spousal Consent
If you’re married and your plan is subject to the survivor annuity rules under the Retirement Equity Act, your spouse may need to provide written, notarized (or plan-witnessed) consent before the plan will process a distribution or rollover. Not every 401(k) is covered by these rules, but many are. Check the summary description or ask the administrator, because missing consent will stall the whole process.
Situations That Change the Math
You Have an Outstanding 401(k) Loan
If you owe on a plan loan when you leave, most plans give you 60 to 90 days to repay it. Miss that window and the unpaid balance is treated as a distribution, which means income tax and, if you’re under 59½, the 10% penalty.
There is a longer safety net. When the unpaid balance is offset against your account because of the job separation, that offset is a qualified plan loan offset (QPLO). You can roll the offset amount into an IRA or new 401(k) by your tax filing deadline for the year of the offset, including extensions.9Internal Revenue Service. Plan Loan Offsets So a loan offset in 2026 could be rolled over as late as October 15, 2027, with an extension. You still need the cash from other sources, since the original loan proceeds are long spent, but the window is far more forgiving than the 60-day rule.
You’re Between 55 and 59½
The Rule of 55 lets you take penalty-free distributions from the plan of the employer you’re leaving if you separate during or after the calendar year you turn 55.6Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions Qualifying public safety employees can use it at 50. The exception applies only to that former employer’s 401(k). Roll the money into an IRA and it disappears; you’d wait until 59½ for penalty-free access. If you might need the funds in this window, leaving the balance in the old plan preserves the option.
You Have Roth 401(k) Money
Designated Roth contributions can roll directly into a Roth IRA with no additional tax, because the money was already taxed going in. The five-year clock for qualified Roth IRA distributions is measured from your first contribution to any Roth IRA, not from your first Roth 401(k) contribution.10Internal Revenue Service. Retirement Plans FAQs on Designated Roth Accounts If you’ve never had a Roth IRA before, the clock starts at the rollover. If you already had one, that earlier date controls.
You Have After-Tax (Non-Roth) Contributions
If your account holds both pre-tax and traditional after-tax money, any partial distribution comes out pro rata; you can’t just pull the after-tax portion. The workaround is a single full distribution split between two destinations: pre-tax dollars to a traditional IRA, after-tax dollars to a Roth IRA, done in one transaction.11Internal Revenue Service. Rollovers of After-Tax Contributions in Retirement Plans Coordinate the split with both receiving custodians and your plan administrator so it’s executed as one event.
Mistakes That Cost the Most Money
Forgetting the 20% withholding on an indirect rollover is the most common expensive error. People deposit only what they received and turn the withheld portion into a taxable distribution by accident.
Cashing out “just for now” is the next. The 60-day redeposit window closes fast, and once it does the tax and penalty are locked in.
Rolling to an IRA without realizing it kills the Rule of 55 catches people between 55 and 59½ who thought they were being tidy by consolidating.
And outstanding plan loans often go unnoticed until a 1099-R arrives in January reporting the unpaid balance as a distribution. If you’re leaving with a loan, deal with repayment or the QPLO deadline before anything else.