Home Equity Loan, HELOC, or 401(k) Loan: How Do You Compare All Three?
When a large expense comes up, some people realize they don’t need a stranger’s approval to borrow — they already own assets that can be borrowed against. A home equity loan, a HELOC, and a 401(k) loan all fit that description, but the mechanics and the stakes differ sharply.
The short answer
A home equity loan gives a lump sum secured by your house, repaid on a fixed schedule. A HELOC is a revolving credit line secured by your house, drawn as needed. A 401(k) loan borrows against your own retirement balance, with no credit check and no lien on real property, but with its own repayment rules and risks tied to your job status. Each is collateralized by something different, and the consequences of falling behind vary just as much.
Collateral: what’s actually on the line
With a home equity loan or HELOC, the collateral is the house itself. Falling seriously behind can lead to foreclosure, since the lender holds a lien against the property. A 401(k) loan is different: it’s secured by your own vested balance, not real estate, so there’s no risk of losing your home over it. Instead, the risk is to retirement savings and, in some cases, to your tax situation if the loan isn’t repaid on schedule.
Repayment structure
- Home equity loan. Fixed monthly payments over a set term, similar to a standard installment loan, with predictable principal and interest.
- HELOC. Often structured with a draw period where interest-only or flexible payments are allowed, followed by a repayment period with fixed payments — worth understanding fully before drawing funds, since payments can rise noticeably once the draw period ends.
- 401(k) loan. Typically repaid through payroll deduction over a period set by the plan, with interest paid back into your own account rather than to an outside lender.
What happens if things go wrong
A missed payment on a home equity loan or HELOC risks the same consequences as a missed mortgage payment, since the home secures the debt. A 401(k) loan carries a different risk: if employment ends before the loan is repaid, many plans require the remaining balance to be repaid quickly, and an unpaid balance can be treated as a taxable distribution, potentially with an early withdrawal penalty depending on age and circumstances. That’s a meaningfully different failure mode than losing a house, but it’s not a minor one either — it can permanently reduce retirement savings and trigger an unexpected tax bill.
Cost considerations
Interest on a home equity loan or HELOC is paid to a lender and gone. Interest on a 401(k) loan is paid back into your own account, which sounds appealing, but the tradeoff is the investment growth that borrowed balance misses out on while it’s out of the market. None of these costs are fixed figures — rates and plan rules vary and change over time — so comparing actual quotes and plan terms side by side matters more than any general assumption about which option is “cheaper.”
What to weigh
The right comparison isn’t just about interest rates; it’s about what kind of risk you’re more comfortable carrying. A home-secured loan risks the house but leaves retirement savings untouched and invested. A 401(k) loan risks retirement growth and creates exposure tied to job stability, but leaves the home’s equity and title untouched. Laying out the collateral, repayment terms, and worst-case scenario for each option side by side tends to make the decision clearer than focusing on interest rate alone.