Home Equity Loan

A home equity loan is a consumer loan secured by a residence the borrower already owns, advanced as a single sum and repaid in level installments over a stated term, usually at a fixed rate. It is nearly always recorded after an existing first mortgage, which makes it a junior or second lien, though it can be a first lien on a property owned free of any mortgage.

Two things distinguish it from its more familiar sibling. A home equity line of credit is open-end credit: the borrower is approved for a limit and draws against it repeatedly, usually at a variable rate, and repaid amounts become available again. A home equity loan is closed-end: one advance, one schedule, one payoff date, and nothing to draw on afterward. That is why the loan suits a known cost and the line suits an unknown or staged one.

It is often described as a second mortgage, which is usually accurate about the lien position and unhelpfully imprecise about everything else, since a line of credit is commonly a second lien too. The useful description is the one above: closed-end credit secured by a dwelling.

Junior lien position is the risk the rate is compensating for, and it matters in two situations. Lien priority determines who is paid from a forced sale. In a foreclosure the first mortgage is satisfied in full before the second lender receives anything, so if the property sells for less than the first balance plus costs, the second lender recovers nothing on its security. Two consequences follow for the borrower. A second-lien rate is higher than a first-mortgage rate on the same property because of that exposure. And in a short sale, where the price is less than the total owed, the junior lienholder has to agree to release its lien for a partial payment or the sale cannot close, which gives it a practical veto out of proportion to its share of the debt. A borrower who defaults can also be foreclosed by a junior lender, subject to the first mortgage.

Regulation Z splits the two instruments cleanly, and the split is not cosmetic. 12 CFR 1026.40 opens by stating that "the requirements of this section apply to open-end credit plans secured by the consumer's dwelling." Everything in that section is therefore unavailable on a closed-end home equity loan: the application-time disclosures and the brochure, the bar on a nonrefundable fee within three business days of receiving them, the refund of application fees if a disclosed term changes before the plan opens, the requirement that any rate change follow a public index outside the creditor's control, and the limits on when a creditor may terminate or freeze the credit. A closed-end home equity loan gets the ordinary closed-end regime instead, which means the 1026.18 disclosures, including the annual percentage rate, the finance charge, the total of payments and a statement of whether a prepayment charge applies. Neither set is better; they are different, and knowing which one governs tells you which protections you have.

The three-day right to rescind is real here and does not exist on a purchase mortgage. 12 CFR 1026.23(a)(1) gives a right of rescission in any credit transaction in which a security interest is retained or acquired in the consumer's principal dwelling, to each consumer whose ownership interest is subject to that security interest. 1026.23(f)(1) then exempts a "residential mortgage transaction," which 1026.2(a)(24) defines as financing the acquisition or initial construction of the dwelling. A home equity loan is not financing the purchase, so it is inside the right and a purchase mortgage is outside it. Three details are worth carrying: the clock runs to midnight of the third business day after the later of consummation, delivery of the rescission notice, and delivery of all material disclosures; the notice must be given in writing, because 1026.23(a)(2) requires mail, telegram or other written communication; and where more than one consumer holds the right, exercise by one is effective as to all. Note also the limitation to a principal dwelling, so a loan against a second home or a rental does not carry it. This is a different three-day period from the one a homebuyer gets to read a Closing Disclosure, and the two are frequently conflated.

The tax treatment, by the route rather than by the conclusion. The outcome is usually reported correctly and the reasoning behind it usually is not, and the reasoning is what stops a reader drawing the wrong inference. There is no exception allowing home equity interest where the money improves the home. IRC 163(h)(3)(F)(i)(I) switches the home equity limb off entirely, and borrowing used "in acquiring, constructing, or substantially improving any qualified residence of the taxpayer" and "secured by such residence" is acquisition indebtedness in the first place, under IRC 163(h)(3)(B)(i). So the product label never controls the answer; the use of the money does. A "home equity loan" that funds a new roof is acquisition debt and its interest is qualified residence interest; the identical loan used to clear credit cards is home equity indebtedness and its interest is not deductible at all.

Two consequences the label-based version hides. First, because qualifying borrowing is acquisition debt, it counts against the acquisition debt cap, which is $750,000 of aggregate acquisition indebtedness, or $375,000 for a married person filing separately, shared with the existing mortgage rather than sitting alongside it. Debt taken on before December 16, 2017 keeps a grandfathered $1 million limit. Second, this is deductible only as an itemized deduction, so it is worth nothing to a household taking the standard deduction.

Two things changed in 2025, so anything written before then describes a system that no longer exists. The disallowance and the $750,000 cap were originally written to lapse after 2025, which is why a reader may well have been told that the home equity deduction returns afterward. It does not. Public Law 119-21 section 70108(a)(1)(A) struck the words ", and before January 1, 2026" from IRC 163(h)(3)(F)(i), and section 70108(a)(3) rewrote the paragraph's heading to read "Special rules for taxable years beginning after 2017." Both are therefore permanent, with no end date. Running the other way, section 70108(a)(1)(B) added IRC 163(h)(3)(F)(i)(III), which switches off the clause that had terminated the mortgage insurance premium deduction after 2021, so qualified mortgage insurance premiums are treated as qualified residence interest again, for taxable years beginning after December 31, 2025.

You apply, the lender orders a valuation and checks the combined balance of all liens against it, and the loan is recorded against the property. The money is advanced once. Level payments follow, each covering interest accrued since the last and reducing principal by the remainder, until the loan is repaid and the lien is released. Closing costs apply much as they do on a mortgage, and the right to rescind runs for three business days after closing.

A hypothetical example of why the use of the money, and then the cap, decide the tax answer. Two borrowers each take a $60,000 home equity loan at 8%, producing $4,800 of interest in a full year, and each already has a mortgage of $720,000 at 6%, producing $43,200.

Borrower one uses the $60,000 to add a bedroom. That is substantial improvement of the residence securing the loan, so the debt is acquisition indebtedness and the interest is qualified residence interest. But the cap is shared. Aggregate acquisition debt is now $780,000, above the $750,000 limit, so only the portion up to the limit counts. Of the $48,000 of combined interest, roughly $46,153.85 is deductible ($48,000 × 750,000 ÷ 780,000) and about $1,846.15 is not. Both figures are itemized deductions, so they are worth nothing unless the household itemizes at all.

Borrower two uses the $60,000 to clear credit card balances. The mortgage interest of $43,200 remains deductible, subject to the cap, and the $4,800 of interest on the equity loan is not deductible in any amount, because that borrowing is home equity indebtedness and the deduction for it is disallowed.

The two loans are the same product from the same lender on the same terms. The only variable is what the money did, and it moves $4,800 of interest from potentially deductible to not deductible at all. This is also why paying off cards with home equity should be evaluated on the rate difference alone, without adding an imagined tax benefit to the case for it.

Pros

• The rate is well below unsecured borrowing of the same size, because the property secures it.
• Fixed rate and fixed payment on a closed-end schedule, so the cost is known at signing and the loan ends on a known date.
• The balance cannot re-grow, which is the advantage over a line of credit for someone financing a single known cost.
• It leaves an existing low-rate first mortgage untouched, which a cash-out refinance does not.
• Where the money buys, builds or substantially improves the home, the interest can be deductible as acquisition debt within the overall cap.
• The three-day right to rescind gives a genuine cooling-off period that a purchase mortgage does not carry.

Cons

• The house secures the debt, so what was recoverable from a consumer balance sheet becomes a risk to where you live.
• Closing costs and a valuation are payable on a loan that may be modest in size, so the fixed cost can be a large share of the benefit.
• The junior lien position raises the rate, and it gives that lender a veto over a short sale.
• Interest used for anything other than buying, building or substantially improving the home is not deductible, and that treatment is now permanent rather than scheduled to lapse.
• The lump sum arrives whether or not it is all needed, and interest runs on the whole amount from the first day.
• None of the specific protections Regulation Z writes for home equity lines of credit applies, because those provisions reach open-end plans only.