Comparing options for what to do with their 401k for a person in the 20s in the USA when quitting their job - AI generated, as is, check for mistakes.
This is for informational purposes only, not to be considered financial advice - AI generated response about 401k options - please check responses.
Here’s a research-backed rundown of the four main options (plus a few extras) for a 20-something quitting a job in the USA, with citations.
First, three quick checks before choosing
- Vesting: If you haven’t worked long enough to be vested, part or all of the employer match is forfeited when you quit (employee contributions are always 100% yours). Check your plan’s vesting schedule before making any decision.
- Your plan’s quality: Fee levels, fund lineup, and admin fees vary wildly between plans. This matters more than any other factor.
- Outstanding 401(k) loan: If you have one, leaving usually triggers repayment, typically by your tax-filing deadline (including extensions); an unpaid balance becomes a taxable distribution, possibly plus the 10% penalty. See SmartAsset’s guide and the IRS overview of 401(k) loan rules after termination.
The standard framework of four options is confirmed by Fidelity (“Generally, you have 4 options… keep it with your previous employer, roll it into an IRA, roll it into a new employer’s plan, or cash it out”) — Fidelity: What happens to your 401(k) when you leave a job. Also see Vanguard’s version.
Option 1: Leave it in the old employer’s 401(k)
Pros
- Tax-deferred growth continues with zero action needed.
- Strongest creditor/bankruptcy protection. ERISA-qualified 401(k)s are federally shielded from creditors and lawsuits with no dollar limit, even outside bankruptcy — NAPA: Creditor protection and retirement assets, IRA Financial.
- If your plan has institutional-class funds, fees can be lower than what you’d get in a retail IRA (more on this below).
- Keeps open the “Rule of 55” option: if you leave this employer’s plan in place, you can withdraw penalty-free after separating from service in the year you turn 55 (and later). IRAs do NOT offer this — Fidelity: What is the Rule of 55, Schwab: Rule of 55. (Pennies today, but a real flexibility perk decades from now.)
Cons
- You’re stuck with the old plan’s fund lineup and continue paying its admin fees; if the plan is mediocre, your money is worse off than it needs to be.
- You lose contact with the plan and can end up as a “forgotten” account; that’s how accounts get automated to default IRAs or cashed out eventually (below).
- If your balance is small, the plan may cash you out anyway (see forced distributions below).
Option 2: Roll it into your NEW employer’s 401(k)
Pros
- Keeps the money in one place, keeps all ERISA protections at the unlimited federal level (rolling to another employer’s ERISA plan preserves full protection — Mesirow).
- Many 401(k)s allow plan loans; you lose loan access with an IRA.
- Retail investors often pay more in an IRA than they did in a 401(k): a Pew study found median retail share-class expenses run meaningfully higher than institutional shares, and CNBC’s coverage put the aggregate cost of rollover fee creep at $45.5 billion. If the new plan has good index funds, this is a strong choice.
Cons
- Depends entirely on the new employer’s plan quality: fund choices, fees, and rules you don’t control (Schwab’s rollover decision guide).
- Creates a “dot-connecting” chore every time you change jobs.
- If your new plan doesn’t accept rollovers, this option is off the table.
Option 3: Roll it into a rollover IRA (most common recommendation)
A direct rollover (custodian-to-custodian) from the 401(k) to an IRA at a low-cost firm (Fidelity, Schwab, Vanguard) keeps the money tax-deferred and never touches your income or the 10% penalty. Cited core mechanism: IRS Topic 413 - Rollovers from retirement plans.
Pros
- Investment freedom: nearly any stock, bond, ETF, or fund, versus a limited menu.
- Consolidation: one account, one statement, one set of fees.
- No requirement to keep the old plan’s structure; you can rebalance and tax-manage freely.
- For Roth 401(k) money: rolling to a Roth IRA is tax-free at rollover and eliminates required minimum distributions (RMDs) eventually — traditional IRAs do have RMDs, but that’s a retirement-age issue, not a today-issue (Fidelity: 401(k)-to-Roth-IRA rollover).
Cons and traps
- Fee creep is real: as covered above, IRA retail share classes cost more on average (Pew); counter it by choosing low-cost index funds/ETFs deliberately.
- The “parked in cash” trap: AARP reported more than 1 in 4 investors who rolled a 401(k) into a Vanguard IRA in 2022 still sat in cash a year later. An uninvested rollover grows at 0%.
- Weaker creditor protection: outside bankruptcy, a rollover IRA loses ERISA’s unlimited shield and protection is governed by state law; in bankruptcy, IRAs are protected but capped (currently over $1.5 million, inflation-adjusted) rather than unlimited — NAPA case of the week, IRA Financial: IRA asset and creditor protection.
- Backdoor Roth wrinkle: a Traditional/rollover IRA balance complicates the backdoor Roth IRA strategy via the pro-rata rule when your income later exceeds Roth contribution limits — White Coat Investor: Backdoor Roth tutorial and Schwab’s explanation of pro-rata. In your 20s this is genuinely worth knowing before you roll.
- Do it as a direct rollover: if the 401(k) pays you directly (indirect rollover), the plan must withhold 20% federal tax, and you must complete the rollover within 60 days — missing the window makes the amount taxable and possibly penalized (Fidelity: 60-day rollover rule, Fidelity: 401(k) rollover mistakes). Have the check made payable to the new custodian FBO (for benefit of) you.
Option 4: Cash it out (withdrawal)
The mechanics — you owe:
- Ordinary income tax on the full amount (at your marginal rate, federal + state).
- A 10% additional early-withdrawal penalty if you’re under 59½ (IRS Topic 558, IRS: Exceptions to tax on early distributions).
- 20% mandatory federal withholding if paid directly to you, even if you intend to roll it over later (IRS Topic 413).
The math that matters for a 20-something. A worked example from myUbiquity: a $10,000 early withdrawal taxed at 22% federal + 10% penalty + 8% state nets roughly $5,700 in hand — while the same $10,000 left invested could grow to roughly $68,000 over 25 years at 8%. For someone in their early 20s the horizon is 40+ years, so the compounding loss is even bigger. TurboTax’s summary and Vanguard make the same point: it “can result in a substantial loss of your retirement savings.”
When exceptions apply (mostly edge cases for this scenario): death/disability, separation from service after age 55, qualified medical expenses over 7.5% of AGI, QDRO, IRS levy, and substantially equal periodic payments (72(t)). Note that familiar exceptions like first-home purchase or education costs exist for IRAs only, not 401(k)s (IRS exceptions list). SECURE 2.0 added new penalty exceptions — up to $1,000 of “emergency personal expenses,” domestic-abuse withdrawals up to $10,000, terminal illness, and disasters — but only for plans that adopt them, and TVM (these don’t change the basic math) — Bradford Tax Institute overview.
Bottom line on cashing out: treat it as a last resort. If you genuinely need the money (e.g., to avoid credit-card debt at 25%+ APR), it can be rational, but you’re permanently donating ~40-60% of the balance to taxes and penalties and losing decades of growth. Rollovers are tax-free; a cash-out is not.
Other options and special situations
- Roth conversion: you can roll pretax 401(k) money into a Roth IRA, paying income tax now (no 10% penalty on the conversion itself) for tax-free growth later. In your early 20s with a low current income, partial conversions can be smart — but it’s a distinct tax decision, not a default. See Fidelity and IRAHelp on Roth 401(k) rollovers (two five-year holding periods to be aware of).
- Company stock / NUA: if your 401(k) holds significantly appreciated employer stock, distributing the shares in kind and electing net unrealized appreciation (NUA) lets the appreciation be taxed at long-term capital gains rates on eventual sale instead of ordinary income — Fidelity’s NUA explainer. Niche, but relevant if your employer matches in stock.
- Forced distribution ahead of you: SECURE 2.0 raised the threshold at which plans may cash out leaving employees from $5,000 to $7,000 (with a mandatory rollover-to-IRA for balances over $1,000 rather than an outright check). Under $1,000, plans can still force a full cash-out to you (Milliman: SECURE 2.0 mandatory cash-out limit). If your balance is small, the plan may act before you do — so decide rather than ignore it.
Bottom line for a 20-something
- Never cash out unless truly desperate — the penalty + tax + lost compounding math is brutal at your age.
- Best default: roll into a low-cost rollover IRA with index funds at a major custodian, using a direct rollover to avoid the 20% withholding/60-day trap. Do it quickly and actually invest it (the cash-trap stat above).
- Better alternative in some cases: if your new employer’s 401(k) has good low-cost index funds, rolling there keeps unlimited ERISA creditor protection and loan access — arguably the best of both worlds.
- Keep in the old plan if the plan is excellent (institutional pricing, good funds) and you don’t mind the contact/maintenance issue.
- Think ahead about the backdoor Roth / pro-rata rule before parking pretax money in a Traditional IRA if you expect high income later.
I’m not a financial advisor, and your specific plan documents (fees, vesting, loan terms, fund lineup) should drive the final call — read your Summary Plan Description before acting.


