Start with the plan document, not a generic cap
Plenty of 401(k) plans never offer participant loans. The IRS notes that loans exist only when the plan document allows them. Before you price anything else, ask the administrator whether loans are offered, what minimum and maximum they use, how interest is set, what fees apply, whether payments come out of payroll, and what happens on leave or when the job ends.
Federal rules add a ceiling. In general, the amount is limited to the smaller of two figures. One figure is $50,000. The other is half your vested account balance, except that this second figure is raised to $10,000 when half the vested balance is below that and the plan permits it. Other plan loans during the prior 12 months can shrink the $50,000 side. The plan can also choose a lower ceiling. A large balance does not, by itself, mean $50,000 is available. The IRS explains participant loans on its retirement topics: loans page and in its plan-loan FAQs.
Five years, payroll, and what a job change can trigger
A plan loan that stays inside the federal rules is generally due within five years. Payments are supposed to stay roughly level and to arrive at least quarterly. A loan used to buy your principal home can sit outside that five-year clock. Many plans deduct the payment from wages, which feels automatic until the wages stop.
A personal loan does not usually come due because you switch employers. You still owe that creditor. A 401(k) loan is attached to the employer plan. IRS materials say the sponsor may require the outstanding loan to be repaid if you leave the job or the plan ends. If it is not repaid, the unpaid amount can be treated as a distribution. Rollover rules sometimes add time. Ask, before you borrow, whether leaving speeds up repayment, what a loan offset would report, and which deadlines apply. The IRS covers offsets on its plan loan offsets page.
The tax risk and the interest-to-yourself slogan
A plan loan that is set up correctly and paid back on the plan’s terms is generally not taxed as a distribution. If it later breaks those rules or goes unpaid, the IRS says it can be treated as one. Dollars that had not been taxed yet can be included in income. An extra 10% tax can apply for some people, and exceptions exist. Age, the kind of transaction, and a completed rollover all change the result. Do not treat 10% as a bill everyone receives. Distribution rules are summarized in the IRS 401(k) distribution guide.
Ads often say you pay the interest back to yourself. That is only where some dollars go. While the money is out on loan, it may not be invested with the rest of the account. The IRS notes, in its discussion of borrowing from a 401(k), that a plan loan can hurt earnings and leave less for retirement. Future returns are unknown, so there is no single lost-growth number to quote. You can check whether contributions, and any match, continue while you repay.
A personal loan’s cost sits outside the plan: APR, any origination fee, the schedule, and what a late payment does. Copy those from the disclosure using Rates & Fees.
Household example: a transmission and a job interview
Household example. Jordan Hale supervises a night shift in Louisville. The vested 401(k) balance is about $28,000, and the plan does allow loans. A shop wants $4,800 for a transmission before it will release the car. The bus does not reach the warehouse for a 5 a.m. start. Jordan has $600 in checking and is in second-round interviews across town.
Half the vested balance is well above $4,800, so the federal ceiling is not the hard part. The interview is. If the new job happens, the current plan may call the loan, and an unpaid balance can be handled as a distribution. Tax results depend on the facts and on whether a rollover is finished in time. A personal loan, if one were offered, would remain a debt to that creditor after a job change. It would not pull money out of the investments.
Jordan asks the administrator what leaving would do to an outstanding loan, and asks any provider what cash would arrive after fees. No rate is assumed on either path. If the outside payment would crowd rent, the 401(k) is not an automatic backup.
Checklist before you touch the retirement account
- The plan document allows loans, and you have the administrator’s figure after any loans in the past 12 months.
- You know the repayment clock, including a principal-home exception if it applies, and whether payments are payroll deductions.
- You have asked what happens if you quit, are laid off, or the plan ends, including offset reporting and any rollover window.
- You understand an unpaid plan loan can become taxable, and that an extra 10% tax is possible for some people, not certain for everyone.
- You have decided whether contributions and any match continue during repayment.
- On a personal-loan offer: cash received, APR, fees, payment, term, total repayment, and late-payment terms. See GameBank’s rates and fees notes.
- The payment still fits if hours drop.
Mistakes people make with plan loans
- Assuming every 401(k) lends. If the document says no, there is no loan to compare.
- Using $50,000 as your available cash. Half the vested balance, recent loans, and a stricter plan rule can all produce a smaller number.
- Choosing whichever interest line looks smaller. A job loss can turn a plan loan into a tax event. A personal-loan rate does not capture that.
- Treating “interest to myself” as free money. The borrowed slice may sit out of the market, and a missed match is a real cost.
- Counting on a 10% tax, or on zero tax. Both are guesses until you know whether the loan stays compliant and whether an exception fits.
- Reading the offset rules after you resign. The deadline is harder once payroll has stopped.
Questions about personal loans and 401(k) loans
Does every participant get to borrow?
No. The employer’s plan has to permit loans, and it can add its own limits, fees, and payroll rules on top of the federal ceiling.
How large can a plan loan be?
Federal rules generally take the smaller of $50,000 and a vested-balance figure: half the account, or $10,000 when half is smaller and the plan allows that step-up. Loans from the previous 12 months can reduce what is left. The plan may allow less, or none.
Is there always an extra 10% tax?
Not on a plan loan that is set up properly and repaid. If an unpaid loan is later treated as a distribution, an additional 10% tax may apply unless an exception fits. Age and rollover treatment matter.
What if I change jobs with a balance still out?
The plan may require you to deal with the outstanding loan. Offset and rollover rules can apply, and the dates matter. Read them before you borrow.
Is outside interest always worse because a company receives it?
No. The plan loan carries retirement, employment, and tax tradeoffs that a slogan about who receives the interest does not price.