Home Equity Loan Guide: HELOC vs Home Equity Loan房屋净值贷款指南：HELOC 与房屋净值贷款的区别
Your home is often your largest asset. Borrowing against the equity you've built up is one of the cheapest ways to access cash — but the two products people call "home equity loans" are fundamentally different animals. This guide clarifies the HELOC vs home-equity-loan distinction, explains how lenders size your borrowing limit, and lays out the closing costs and traps most people miss.
What Is Home Equity?
Home equity is the difference between what your home is worth and what you owe on it. If your home is appraised at $500,000 and your mortgage balance is $300,000, you have $200,000 of equity (40%). You can borrow against that equity in two main ways:
- Home equity loan — a lump-sum second mortgage at a fixed rate, repaid over a fixed term (often 5–15 years). You get all the cash at closing.
- HELOC (Home Equity Line of Credit) — a revolving credit line, like a giant credit card secured by your home. You draw what you need, when you need it, during a multi-year draw period. The rate is usually variable.
The LTV Limit and How It's Calculated
Lenders will let you borrow up to a combined loan-to-value (CLTV) ratio — the total of all mortgages on your home divided by its appraised value. Most lenders cap CLTV at 80% to 85% for equity borrowing.
On a $500,000 home with a $300,000 mortgage and an 85% CLTV cap: (500,000 × 0.85) − 300,000 = $125,000 available.
The current mortgage balance is subtracted because lenders count the existing first mortgage against the limit. The 80% mark is also the threshold where most conventional mortgages allow PMI cancellation — tapping equity that pushes you past it usually requires a PMI recalculation.
Fixed vs Variable Rate — The Core Difference
The two products price very differently:
| Home Equity Loan | HELOC | |
|---|---|---|
| Disbursement | Lump sum at closing | Draw as needed, up to a credit limit |
| Rate | Fixed | Variable (usually Prime + margin) |
| Repayment | Starts immediately | Often interest-only during draw period |
| Best for | Known, one-time expense | Ongoing or uncertain expenses |
The variable HELOC rate is the key risk: a 4% intro rate can reset to 8%+ if the Fed hikes. The lower initial payment can balloon. A fixed-rate home equity loan locks in your cost — usually at a small premium to the HELOC's intro rate.
The Closing Cost Trap
Both products come with closing costs that often run 2% to 5% of the loan amount — appraisal fees, title insurance, recording fees, origination points. On a $50,000 home equity loan, that's $1,000–$2,500 you pay upfront, just like a regular mortgage.
Some lenders advertise zero closing costs — they roll the fees into the loan balance or charge a slightly higher rate. If you keep the HELOC for 5+ years, the higher rate costs more than the fees you avoided. Read the APR, not the rate.
Tax Deductibility (and Why It Changed)
Under the Tax Cuts and Jobs Act (2017+), home equity loan interest is only deductible if the loan is used to buy, build, or substantially improve the home that secures it. Using a HELOC to pay off credit cards, take a vacation, or pay for college does not generate deductible interest — even though the loan is technically secured by your home.
For most non-home-improvement uses, a HELOC's rate advantage over credit cards is offset by the loss of the deduction. Always compare after-tax cost.
When Tapping Equity Makes Sense
Equity is not free money. It's a loan against an asset that puts your home at risk if you default. Three legitimate uses:
- Home improvements that add value — a kitchen remodel that returns 70% at resale, financed at 7%, is a much better trade than a credit card at 22%.
- Consolidating high-interest debt — if you can pay off credit cards at 22% with a HELOC at 8% (and you have a real plan to stop running the cards back up), the math works.
- Emergency bridge — a HELOC sitting unused is a powerful safety net for self-employed people with irregular income.
Three uses that don't make sense: speculative investments, vacations, and routine consumption. Equity should be your last resort for those, not your first.
Try It
Use the Home Equity Calculator to:
- Estimate your available equity based on home value, current mortgage, and target CLTV.
- Compare monthly payments on a fixed-rate home equity loan vs a HELOC at various draw amounts.
- See the total interest cost of tapping equity at different terms.
The calculator supports lump-sum, draw-during-period, and amortization models and shows the break-even point where a HELOC's variable-rate risk catches up to a fixed-rate loan's premium.