You need cash, and you are staring at two doors: borrow from your own 401k, or take out a personal loan. Both can get you the money, but they carry very different costs, risks, and consequences if life throws you a curveball. Choosing wrong can cost you thousands or dent your retirement for years.
This guide puts a 401k loan and a personal loan side by side as of July 2026, so you can see the tradeoffs clearly and pick the option that fits your situation.
The Quick Comparison
Here is how the two stack up on the factors that matter most.
| Factor | 401k Loan | Personal Loan |
|---|---|---|
| Interest rate | Often prime rate plus about 1 to 2 percent; interest paid back to your own account | Single-digit APR for strong credit; double-digit for fair or poor credit |
| Repayment term | Usually up to 5 years, level payments at least quarterly | Often more flexible, sometimes longer than 5 years |
| Credit check | None; does not affect approval | Yes; approval and rate depend on creditworthiness |
| Credit-score impact | No reporting, so no help or harm to your score | On-time payments can build credit; missed ones can hurt it |
| Tax impact | Repaid with after-tax dollars; default triggers taxes and possible penalty | Repaid with after-tax dollars; no double-taxation issue |
| Key risk | Losing your job can make the balance due fast | Higher interest cost if your credit is weak |
How a 401k Loan Works
A 401k loan lets you borrow from your own retirement savings and pay yourself back with interest. Because the interest goes back into your account, it can feel like you are paying yourself instead of a bank.
Under Department of Labor rules, the interest rate must be reasonable, meaning close to what a bank would charge for a similar secured loan. Many plans set it at the prime rate plus roughly 1 to 2 percent. There is no credit check, and the loan does not appear on your credit report, so it neither helps nor hurts your score.
Most 401k loans must be repaid within five years, with level payments made at least quarterly. That structure keeps the loan on a steady payoff track.
The Hidden Risks of a 401k Loan
The convenience of a 401k loan hides some real dangers that can hit hard.
First, repayments come from after-tax dollars, and the money will be taxed again when you withdraw it in retirement. Some people describe this as a double-tax effect on the borrowed amount.
Second, and more serious, is what happens if you leave or lose your job. The outstanding balance is typically due within a short window, often around 60 days. If you cannot repay it, the IRS treats the unpaid amount as a distribution. That means it becomes taxable income for the year, and if you are under age 59 and a half, you may also owe a 10 percent early-withdrawal penalty.
Third, money pulled out of your 401k is not invested while it is loaned out, so you may miss market growth during that time.
In short, a 401k loan looks cheap on the surface, but a job change can turn it into a taxable event with a penalty, so it carries hidden risk that a personal loan does not.
How a Personal Loan Works
A personal loan is money borrowed from a bank, credit union, or online lender, repaid in fixed monthly installments. Approval and your interest rate depend on your creditworthiness, and APRs vary by borrower. If you are unsure how large a loan your finances support, a quick look at how much personal loan you can qualify for can set realistic expectations before you apply.
Borrowers with strong credit, generally above 700, can often qualify for single-digit APRs. Those with fair or poor credit may face double-digit rates, which makes the loan more expensive. When you compare offers, remember the difference between the interest rate versus the APR on a personal loan, since fees like origination charges can make a low headline rate more costly than it looks. Repayment terms are often more flexible than a 401k loan and can stretch beyond five years depending on the lender.
One advantage stands out: a personal loan is repaid entirely with after-tax dollars and does not touch your retirement savings, so there is no double-taxation issue and no risk to your nest egg.
Before you assume a personal loan is too expensive, it helps to see your actual rate. Upstart lets you check your rate with no hard credit pull, so you can compare a real personal loan offer against a 401k loan without any impact to your score.
Upstart
Upstart
Upstart is an online lending marketplace that partners with banks to provide personal loans from $1,000-$75,000. Upstart goes beyond traditional lending metrics to help you find financing that considers many factors including your education and experience
Standout feature
AI-driven underwriting that goes beyond your credit score — checking your rate is a soft pull with no score impact, most applicants are approved instantly, and funds can arrive as soon as the next business day.
Fees
Origination fee 0%–12% of the loan amount
Pros
No minimum credit score required (AI-based approval)
Cons
Origination fee: up to 12%
The Credit-Score Angle
Here is a difference that matters over the long run. A 401k loan does not report to the credit bureaus, so it cannot build your credit history. A personal loan does report, which cuts both ways.
If you make your personal loan payments on time, you build positive payment history that can improve your score and unlock better rates in the future. If you miss payments, it can damage your score. So a personal loan is a chance to strengthen your credit, while a 401k loan is neutral.
Because your rate hinges on your credit and offers vary widely between lenders, it pays to shop around rather than accept the first number you see. Taking a few steps to get a lower interest rate on a personal loan before you apply can save you hundreds over the life of the loan. MoneyLion lets you compare personal loan offers from multiple lenders in one place, which makes it easier to find a lower rate before you commit. Approval and terms depend on your creditworthiness, and terms and conditions apply.
MoneyLion
MoneyLion
Compare personal loan offers from top providers in minutes with no credit score impact with the MoneyLion Marketplace.
Standout feature
Soft-pull marketplace that surfaces prequalified personal loan offers from a network of lenders, with options up to $100,000 and partners that work with fair and bad credit
Fees
Free to use the marketplace
Pros
Compare multiple lender offers in minutes; soft credit pull to prequalify — no impact on your score
Cons
Final approval requires a hard pull from the chosen lender
Which One Should You Choose?
There is no single right answer, but a few patterns help.
A 401k loan may make sense if you have stable, secure employment, need a lower rate than your credit qualifies for, and are confident you can repay well before any job change. The lack of a credit check helps if your score is low.
A personal loan may be the better fit if your job situation is uncertain, if you want to avoid touching your retirement, or if you want the borrowing to help build your credit. It is also simpler because there is no early-withdrawal-penalty landmine. If you are borrowing specifically to wipe out high-interest balances, our guide on whether to take a personal loan to pay off debt walks through when consolidation actually helps.
For smaller, short-term cash needs, both options may be more than you need. A flexible line of credit rather than a personal loan can be a better match when you only have to bridge a minor gap until your next paycheck, sparing you from taking on a formal loan at all. Borrow only what the situation truly requires.
Next Steps
Start by writing down how much you need, how quickly you can repay it, and how secure your job feels. Then compare the true cost of each option, including the tax and penalty risk on a 401k loan if your job changes. If personal loan rates look high because of your credit, check your rate and compare offers before deciding, then revisit the comparison. Never borrow more than you can comfortably repay, and remember that APRs vary by creditworthiness.
Frequently Asked Questions
Is a 401k loan cheaper than a personal loan?
Often the stated interest rate on a 401k loan is lower, and you pay that interest back to yourself. But the true cost can be higher if you leave your job and the balance becomes a taxable distribution with a possible 10 percent penalty. Factor in that risk before assuming it is cheaper.
Does a 401k loan affect my credit score?
No. A 401k loan does not appear on your credit report, so it neither helps nor hurts your score. A personal loan does report, meaning on-time payments can build your credit while missed payments can hurt it.
What happens to my 401k loan if I lose my job?
The outstanding balance is typically due within a short period, often around 60 days. If you cannot repay it, the IRS treats the unpaid amount as a distribution, which becomes taxable income and may trigger a 10 percent early-withdrawal penalty if you are under 59 and a half.
Which loan is better for building credit?
A personal loan is the better choice for building credit, since it reports to the bureaus and on-time payments strengthen your history. A 401k loan does nothing for your credit because it is not reported at all.
Terms and conditions apply. APRs vary by creditworthiness, and tax rules can change, so consult your plan administrator or a tax professional before borrowing.
