Years of rising home values have left many households sitting on six figures of equity while carrying card balances at rates several times a mortgage rate. Tapping the house to fund a new roof, consolidate debt, or cover a big expense is often the cheapest borrowing available. But “borrowing against your home” comes in two distinct products that behave nothing alike, and picking the wrong one for your situation is an expensive mistake. Before comparing lenders, compare the products.

Both share one feature that should be said first and plainly: your house is the collateral. Fall far enough behind on either a home equity loan or a HELOC and the lender can foreclose, a risk the FTC’s home equity guidance puts at the top of the page for good reason. Debt that was safely unsecured, like credit cards, becomes debt your home guarantees the moment you consolidate it this way.

The home equity loan: a second mortgage, plain and simple

A home equity loan hands you one lump sum at closing, at a fixed interest rate, repaid in equal monthly installments over a set term, commonly five to thirty years. It is a second mortgage in the most literal sense, and its virtues are predictability: you know the payment, the rate, and the payoff date on day one.

It fits situations where the cost is known and one-time: a contractor’s signed bid, a roof, a medical bill, consolidating a specific pile of debt. Its weakness is inflexibility. Interest starts on the whole amount immediately, whether or not you needed it all, so borrowing extra “just in case” costs real money.

The HELOC: a credit card secured by your house

A home equity line of credit works like a credit card with your home as security: you are approved for a limit, you draw what you need when you need it, and you pay interest only on what you have actually drawn. The rate is typically variable, moving with the market.

The structure has two phases, and the second one is where people get hurt. During the draw period, often around ten years, you can borrow and many lenders require only interest payments. Then the repayment period begins: no more draws, and payments jump because you are now paying principal and interest on everything outstanding, over the remaining term. A household that spent the draw decade making interest-only payments can see its monthly bill rise sharply overnight. If you take a HELOC, ask the lender to show you, in writing, what the payment becomes after the draw period ends, assuming the line is fully used.

HELOCs fit costs that arrive in stages, a multi-year renovation, tuition paid by semester, or a standby emergency line you may never draw. Watch the fee schedule: some lines carry annual fees, minimum-draw requirements, or early-closure fees, and teaser rates that adjust upward after an introductory stretch.

The numbers lenders will look at, and you should too

Lenders typically cap total borrowing, your first mortgage plus the new loan or line, at a percentage of the home’s value, often in the neighborhood of 80 to 85 percent, subject to your credit and income. Closing costs and appraisal fees apply to both products, so gather at least three quotes and compare the annual percentage rate, fees, and, for HELOCs, the rate cap, margin, draw length, and post-draw payment. Federal law also gives you a three-business-day right of rescission on loans secured by your primary home: a cooling-off window to cancel after signing, no questions asked.

On taxes, a rule many people remember wrong: interest on home equity borrowing is deductible only if the money is used to buy, build, or substantially improve the home securing it, and only if you itemize deductions, per IRS Publication 936. Using a HELOC to consolidate cards or buy a car means the interest is not deductible, whatever a loan officer implies.

The third option worth pricing

Before committing to either product, price one alternative: a cash-out refinance, which replaces your existing mortgage with a larger one and hands you the difference. When your current mortgage rate is higher than today’s rates, a cash-out refi can win outright. When you are sitting on a low-rate mortgage from years past, the opposite is true, and this is the trap of the moment: refinancing a whole balance upward in rate just to extract some equity can cost far more over time than a second-lien loan or line that leaves the cheap first mortgage untouched. Run both sets of numbers; the right answer depends entirely on the rate you already have.

The decision in three questions

First: is the cost fixed and known, or open-ended? Known favors the loan; staged or uncertain favors the line. Second: how would a rising payment land on your budget? If a variable rate climbing would strain you, the fixed loan’s predictability is worth paying for, though some lenders now offer fixed-rate conversion options within HELOCs, worth asking about. Third, and most honest: what is the money for? Borrowing against decades of built-up equity to fund ongoing overspending converts a spending problem into a housing risk. The house should back investments in the house, or genuine one-time needs, not the monthly gap.

Answer those three, then shop hard, because pricing on these products varies widely between banks and credit unions. The equity is yours; the goal is to use it without betting the address it lives at.

This article was produced with AI assistance and reviewed by a human editor. Figures are linked to their primary sources; where a claim could not be verified from the public record, we say so.