What You Are Actually Doing
Your equity is the slice of your home you truly own: the market value minus what you still owe. A home equity loan turns part of that slice into cash. The lender hands you a lump sum, you pay it back in fixed monthly installments over a set term, and your house secures the debt as a second lien behind your existing mortgage.
The pitch writes itself: rates far below credit cards, a big check, and you do not touch your existing mortgage rate. If you locked a low first mortgage years ago, that last part matters. A cash-out refinance would swap your whole loan at today’s rates. A home equity loan leaves it alone and borrows alongside it.
Here’s what the pitch skips. You are turning whatever you spend the money on into debt that can take your house. The Federal Trade Commission says it without decoration: fall behind, and the lender may be able to foreclose. A credit card company can ruin your credit. A home equity lender can take your home.
That single fact should drive every decision on this page.
How Much You Can Borrow
Lenders cap your combined loan-to-value, your first mortgage plus the new loan, measured against an appraisal. Caps vary by lender, with many landing around 80% to 85% combined.
The math on a $400,000 home where you owe $250,000, at an 80% cap: total allowed debt is $320,000, so up to $70,000 is available. You will pay closing costs on the new loan, and the lender underwrites your income, debts, and credit just like a first mortgage.
One number to check before any of that: what you owe versus what the house is worth. If you are unsure how equity builds in the first place, our how mortgages work guide covers it.
The Tax Rule Everyone Gets Wrong
“Home equity interest is tax-deductible” is one of the most repeated half-truths in personal finance. Here is the actual rule, per IRS Publication 936: the interest is deductible only if the borrowed money buys, builds, or substantially improves the home securing the loan.
Borrow $50,000 against the house to renovate the kitchen? Potentially deductible, if you itemize. Borrow the same $50,000 to pay off credit cards or buy a truck? Not deductible. Same loan, same rate, different use, different tax treatment. The IRS also caps total home loan debt eligible for the deduction at $750,000 ($375,000 if married filing separately).
Most taxpayers take the standard deduction instead of itemizing, so plenty of borrowers get no tax benefit even on qualifying renovation debt. Do not let a salesperson count the tax break as guaranteed savings.
Loan, Line, or Cash-Out Refi?
Three ways to tap equity, one decision tree:
- Home equity loan. One known expense, one lump sum, fixed payment. Best for a priced renovation or consolidating a specific debt at a fixed cost.
- HELOC. Revolving credit line, draw as needed, usually variable rate, per the CFPB. Best for staged projects or a standby reserve.
- Cash-out refinance. Replaces your whole first mortgage with a bigger one. Only worth a look when today’s rates beat your existing rate, which for anyone holding a pandemic-era mortgage they almost certainly do not.
If your first mortgage rate is low, protect it. The second-lien products exist precisely so you can borrow without giving up that rate.
Where Equity Borrowing Goes Wrong
The classic mistake: rolling credit card balances into a home equity loan, feeling cured, and running the cards back up. Now the same spending exists twice, and half of it is secured by your house. If the spending habit is unfixed, consolidation is rearrangement, not progress.
The honest test before borrowing: does this expense outlive the loan? A roof, yes. A vacation, no. Putting a ten-year lien on your house for something with no lasting value is dumb math.
Do This Next
Get quotes from at least three lenders, including the bank that holds your checking account and a credit union. Second-lien pricing varies widely. Compare rate, term, closing costs, and any annual fees. Run the payment against your budget with our mortgage calculator, and stack the structure against a credit line in our HELOC guide. For the full picture of borrowing against a home, start at the mortgages hub.