Home Equity Hub
HELOC vs Second Mortgage: Which Equity Loan Fits You?
Both products tap home equity in second lien position behind your primary mortgage, but they behave very differently. The right choice depends on how predictable your need is and your tolerance for rate variability.
Quick answer
Pick a HELOC for ongoing or unpredictable funding needs where you want a revolving line you can borrow against repeatedly. Pick a fixed second mortgage when you have one known lump sum to fund and want a fixed-rate, fixed-payment loan with a defined payoff date.
The Three Main Equity Products
When you want to access home equity, you usually have three real options. This page covers the second-lien options; if you are weighing a refinance instead, see HELOC vs cash-out refi.
- HELOC (Home Equity Line of Credit). Revolving line, variable rate, draw period followed by repayment period. Second lien.
- Fixed second mortgage (home equity loan). Lump-sum advance, fixed rate, fully amortizing from day 1. Second lien.
- Cash-out refinance. New first mortgage that replaces your existing one and includes the equity withdrawal. Resets your first-lien rate, which is the tradeoff in a low-existing-rate environment.
HELOC Mechanics
Revolving line. The lender approves you for a credit limit (for example, $100,000). You can draw any amount up to that limit at any time during the draw period and pay it back, then redraw. Similar to a credit card secured by your home.
Variable rate. Priced as Prime + a margin (for example, Prime + 0.5%). When Prime moves, your HELOC rate moves typically within one billing cycle. There is no fixed-rate certainty unless your lender offers a "fixed rate option" that lets you lock specific advances at a fixed rate while leaving the rest of the line variable.
Draw period. Typically 10 years. Minimum monthly payment during the draw period is often interest-only, which keeps payments low while you have an outstanding balance.
Repayment period. Typically 10 to 20 years after the draw period ends. The outstanding balance amortizes fully over that period at the then-current variable rate. Payments step up materially when the line converts from draw to repayment, which is a common surprise.
Closing costs. Often $0 to a few hundred dollars; some lenders waive them entirely with a clawback if you close the line within 24 to 36 months. This makes HELOCs cheap to open even if you never draw.
Fixed Second Mortgage Mechanics
Lump-sum advance. You receive the full loan amount at closing. There is no line to draw against later. If you need more money in two years, you would open a separate loan or HELOC.
Fixed rate. Rate is locked at closing for the life of the loan. Monthly payment never changes. No Fed-cut benefit, no Fed-hike risk.
Fully amortizing. Payments are calculated to pay off the loan over the full term (typically 5 to 30 years). Every payment includes principal and interest from day one.
Closing costs. Closer to a refinance: title, recording, lender fees. Usually 1% to 3% of the loan amount depending on lender and state.
Term flexibility. Common terms are 10, 15, 20, and 30 years. Shorter term = higher payment, lower total interest.
Side-by-Side Comparison
| Feature | HELOC | Fixed Second Mortgage |
|---|---|---|
| Rate type | Variable (Prime + margin) | Fixed |
| Funds disbursed | As-needed draws | Single lump sum at closing |
| Payment structure | Interest-only typical during draw | Fixed P&I from day 1 |
| Typical term | 10-year draw + 10-20 year repayment | 5 to 30 years |
| Reborrow allowed | Yes, during draw | No |
| Typical closing costs | $0 to low hundreds | 1% to 3% of loan |
| Rate certainty | Low | High |
| Best for | Ongoing / unpredictable needs | One known lump-sum need |
Use Cases
HELOC fits when...
- You are doing a multi-phase renovation and want to draw as contractor invoices come in.
- You run a business and want a standby liquidity line for working capital.
- You want an emergency cash reserve attached to home equity without locking it in.
- You expect to pay the balance off quickly and re-use the line later.
- You expect rates to fall, so a variable rate works in your favor.
Fixed second mortgage fits when...
- You are consolidating a known balance of high-rate consumer debt at a fixed rate.
- You are funding a single large purchase: a new HVAC, a kitchen, an investment-property down payment.
- You want a defined payoff date and a fixed monthly payment.
- You do not want exposure to variable rates while you have a balance.
- You want to keep your low first-mortgage rate intact while still tapping equity.
Tax Deductibility (TCJA Rules)
Under the Tax Cuts and Jobs Act, interest on a HELOC or fixed second mortgage is deductible only if the proceeds are used to buy, build, or substantially improve the home that secures the loan. Two practical implications:
- Using a HELOC to renovate the home that secures it: interest is potentially deductible.
- Using a HELOC or fixed second mortgage for debt consolidation, a car, tuition, vacation, or another property: interest is not deductible under federal rules.
The total combined mortgage debt eligible for deduction is also capped per IRS rules. This page is general educational information and is not tax or legal advice. Consult a CPA or attorney for your specific situation.
Frequently Asked Questions
What is the difference between a HELOC and a home equity loan?+
A HELOC is a revolving line of credit with a variable rate, typically a 10-year draw period during which you can borrow and repay repeatedly. A home equity loan (often called a fixed second mortgage) is a closed-end loan: a single lump-sum advance at closing, fixed rate, fully amortizing payments from day one. HELOC works like a credit card secured by your home. A home equity loan works like a traditional mortgage in second position.
Which has lower closing costs?+
HELOCs typically have lower closing costs and some lenders waive them entirely (sometimes with a clawback if you close the line within 24 to 36 months). Fixed second mortgages tend to have closing costs similar to a refinance, including title, recording, and lender fees. If you only need access to funds occasionally, a HELOC is usually cheaper to open.
Is HELOC interest tax-deductible?+
Under the Tax Cuts and Jobs Act, interest on a HELOC or fixed second mortgage is deductible only if the proceeds are used to buy, build, or substantially improve the home that secures the debt. If you use the funds for debt consolidation, a car, tuition, or other personal expenses, the interest is not deductible. Total mortgage debt eligible for deduction is also capped. Consult a CPA for your specific situation. This is not tax advice.
Can I have both a HELOC and a primary mortgage at the same time?+
Yes, that is the normal setup. The primary mortgage is in first lien position. The HELOC or fixed second mortgage is in second lien position. Lenders evaluate combined loan-to-value (CLTV), typically allowing CLTV up to 80% to 90% depending on the program and your credit profile.
What happens to a HELOC rate when the Fed cuts rates?+
Most HELOCs are priced as Prime + a margin. When the Fed cuts its target rate, Prime typically drops by the same amount within a billing cycle, so HELOC rates fall fairly quickly. The reverse is also true: a Fed hike passes through to HELOC rates. A fixed second mortgage rate does not move with Fed decisions because the rate is locked at closing.
How long is a HELOC draw period?+
Typically 10 years. During the draw period you can borrow up to the credit line limit, pay it down, and reborrow, often with interest-only minimum payments. After the draw period ends, the line enters a repayment period (typically 10 to 20 years) where the balance fully amortizes at the then-current rate. The repayment-period payment is materially higher than the draw-period payment.
Which is better for debt consolidation?+
A fixed second mortgage typically wins for debt consolidation. You consolidate a known balance at a fixed rate with a defined payoff schedule. A HELOC works too but adds variable-rate risk: if your consolidation balance is $80,000 and rates rise, the monthly cost rises with them. If the goal is to predictably eliminate the debt over a set timeline, the fixed second is the cleaner instrument.
Price a HELOC or fixed second
See live rate options (no discount points) or email us with your scenario for a side-by-side comparison.
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Equity sharing vs traditional
Home equity investment products compared
Renovation loans
Finance the purchase and the work in one loan
Eligibility, rates, and program guidelines vary by lender and are subject to change. Combined loan-to-value caps, FICO minimums, and seasoning requirements differ by program. This page is general educational information and is not a commitment to lend or an offer of credit. Equal Housing Opportunity.