Is a HELOC a second mortgage? Yes, unless your home is paid off
Yes. If you already have a mortgage, a HELOC (home equity line of credit) is a second mortgage: a second loan secured by your home that ranks behind the first one. If your home is paid off, the HELOC is the only loan on it, so it becomes the first lien instead.
“Second” is about who gets paid first, not about when you took the loan out or what kind of loan it is. Below: what lien position means in dollars, how a HELOC differs from a home equity loan and a cash-out refinance, and what happens to a HELOC when you refinance. If you are weighing a line against other options, LenderMatch lets you ask several lenders at once and compare.
What is a second mortgage?
The CFPB defines a second mortgage, also called a junior lien, as a loan you take out using your house as collateral while you still have another loan secured by it. It names home equity loans and HELOCs as the common examples, and splits second mortgages into two types:
- Open-end: you borrow up to a limit, repay and borrow again. That is a HELOC.
- Closed-end: you get the full amount up front and cannot redraw it. That is a home equity loan.
So a HELOC is one of the two main kinds of second mortgage. The label describes where the loan sits; the product name describes how it works.
Is a HELOC a second mortgage on your home? What lien position means
Every loan secured by your home is recorded as a lien. When there is more than one, they have an order. The CFPB explains that if your home is sold to cover your debts, the second mortgage is paid only after the first mortgage is paid. If there is not enough equity left, the second lender may not get back everything it is owed.
That risk is why the CFPB notes that second mortgages often carry higher rates than first mortgages. A HELOC rate is usually the prime rate plus a margin the lender sets for you. The prime rate was 7.00% as of October 20, 2026 (Federal Reserve H.15). For comparison, Freddie Mac’s average 30-year fixed first-mortgage rate was 7.40% for the week of October 15, 2026, so where a given HELOC lands depends heavily on its margin.
Worked example: who gets paid first in a forced sale
Say you owe $250,000 on your first mortgage and $60,000 on a HELOC, and the home has to be sold to cover the debts. What is left after sale costs is paid out in lien order.
| Left after sale costs | $340,000 | $280,000 |
|---|---|---|
| First mortgage gets | $250,000 | $250,000 |
| HELOC lender gets | $60,000 | $30,000 |
| HELOC shortfall | $0 | $30,000 |
| Left for you | $30,000 | $0 |
Illustration by LenderMatch of lien priority as the CFPB describes it. Whether a lender can collect a shortfall from you afterward depends on your state and your loan documents.
In the second column the HELOC lender absorbs a $30,000 loss. Lenders price that risk into the rate and cap how much of your home’s value all loans together can reach. Our guide to how much equity you can borrow shows that formula, and the home equity calculator runs it on your numbers.
HELOC vs second mortgage: what is the difference?
“HELOC vs second mortgage” is not really a choice between rivals. The real choice is between the two kinds of second mortgage, or between a second mortgage and a refinance:
| Lien position | How the money comes | |
|---|---|---|
| HELOC | Second if you have a mortgage; first if the home is paid off | A credit line you draw from as needed, usually at a variable rate |
| Home equity loan | Second if you have a mortgage; first if the home is paid off | One lump sum, usually at a fixed rate |
| Cash-out refinance | Always first: it replaces your current mortgage | A new, larger mortgage; you get the difference in cash |
For a side-by-side on the first two, see HELOC vs home equity loan. For how a line works from draw to repayment, see what is a HELOC.
Is a home equity loan a second mortgage?
Yes, on the same terms as a HELOC. The CFPB lists the home equity loan as the closed-end form of a second mortgage. If it is the only loan on the home, it is a first lien.
Can a HELOC be in first position? HELOCs on a paid-off home
Yes. With no mortgage on the home, the HELOC is the only lien, so it is first in line. Fannie Mae’s Selling Guide even refers to “an existing HELOC in first-lien position” as a loan a later refinance can pay off.
Being first matters in a few practical ways:
- Nothing to subtract. Your limit is the lender’s maximum percentage of the home’s value. At 80% on a $300,000 home, that is up to $240,000.
- A copy of the valuation. Under Regulation B, a lender must give you a free copy of every appraisal and other written valuation for credit secured by a first lien on a dwelling, promptly or three business days before the account opens, whichever is earlier. That rule does not cover second liens.
Our guide to borrowing against a paid-off house compares a first-lien HELOC with a home equity loan and a cash-out loan on a free-and-clear home.
Is a cash-out refinance a second mortgage?
No. A cash-out refinance pays off the mortgage you have and replaces it with a new first mortgage for a larger amount. Fannie Mae’s Selling Guide describes it as a new first mortgage that pays off existing loans, or a new mortgage on a property owned free and clear. It may also pay off second liens of any age, which turns two loans into one.
That is the core trade: a second mortgage leaves your first mortgage and its rate alone, while a cash-out refinance replaces the rate on everything you owe.
Example: $60,000 with a 3.00% first mortgage
You owe $240,000 at 3.00% with 24 years left, about $1,170 a month in principal and interest, and you need $60,000.
- Keep the first mortgage and add a HELOC. At an assumed 8.00% (the 7.00% prime rate as of October 20, 2026, plus a 1.00% margin, for illustration), interest-only payments on $60,000 are $400. Total: about $1,570 a month.
- Cash-out refinance to $300,000 at 7.40% (the Freddie Mac 30-year average for the week of October 15, 2026) for 30 years, before closing costs: about $2,077 a month.
Principal and interest calculated by LenderMatch. Rates are illustrations, not quotes. The HELOC payment rises when its draw period ends or if the prime rate goes up.
When your first-mortgage rate is well below today’s, the second mortgage often costs less each month. When your rate is near or above today’s, one new first mortgage can make more sense. Cash-out refinance vs HELOC goes deeper, and the cash-out refinance calculator runs your numbers.
See your HELOC payment before you compare.
The HELOC payment calculator shows the payment while you draw and after the draw period ends.
What happens to a HELOC when you refinance your first mortgage?
A refinance pays off your old first mortgage and records a new one. The new lender wants your HELOC to stay behind its loan, so the HELOC lender usually signs a subordination agreement that keeps the line in second place. Fannie Mae, for example, requires every second lien on a loan it buys to be clearly subordinate to the first mortgage. On a refinance, a second lien that stays in place must be resubordinated to the new first mortgage, unless state law keeps its position automatically.
Two more Fannie Mae rules shape the choice for loans it buys:
- A limited cash-out (rate-and-term) refinance can roll in only second liens that were used to buy the home. Paying off a HELOC you opened later makes it a cash-out refinance.
- A limited cash-out refinance can put no more than the greater of 1% of the new loan or $2,000 in your pocket.
Planning to refinance and keep the line? Ask your HELOC lender how long its subordination review takes and whether it charges a fee.
Is a HELOC considered a mortgage under federal rules?
Federal disclosure rules treat it as a home-secured loan whatever its position. Regulation Z’s home equity plan rules apply to open-end credit secured by your dwelling, first lien or second. When the home is your principal dwelling, you generally have three business days after opening the line to cancel it (Regulation Z’s right of rescission). In Texas, a HELOC on your homestead must also follow the state constitution’s home equity rules; see the Texas HELOC guide.
Frequently asked questions
Is a HELOC considered a second mortgage?
Yes, if you already have a mortgage on the home. The CFPB defines a second mortgage, or junior lien, as a loan secured by your home while another loan is also secured by it, and names HELOCs as a common example. On a home with no other loan, a HELOC is the first lien.
Is a HELOC a lien on my house?
Yes. A HELOC is secured by your home, so the lender records a lien against it. If you cannot repay, the CFPB warns you could lose your home. The lien stays until the line is paid off and closed.
Is a HELOC and a second mortgage the same thing?
Not exactly. “Second mortgage” describes a position: any loan that sits behind a first mortgage. A HELOC is one kind of loan that can sit there. A home equity loan is another. So most HELOCs are second mortgages, but not every second mortgage is a HELOC.
Is a cash-out refinance a second mortgage?
No. A cash-out refinance pays off your current mortgage and replaces it with a new, larger first mortgage. You end up with one loan, not two. Fannie Mae’s Selling Guide describes it as a new first mortgage that pays off existing loans, or a new mortgage on a home owned free and clear.
Can I refinance my first mortgage and keep my HELOC?
Often, yes, but the HELOC lender usually has to agree to stay in second place. For loans sold to Fannie Mae, a HELOC left in place must be resubordinated to the new first mortgage unless state law keeps its position automatically. Ask your HELOC lender about its subordination process before you apply.
Does LenderMatch check my credit?
No. LenderMatch never pulls your credit. A lender you choose may check it, with your permission, when you apply.
Compare HELOC offers from several lenders →
Sources
- CFPB, “What is a second mortgage loan or ‘junior-lien’?” (last reviewed September 11, 2024).
- Fannie Mae Selling Guide B2-1.3-03, Cash-Out Refinance Transactions (12/10/2025); B2-1.3-02, Limited Cash-Out Refinance Transactions (10/08/2025); B2-1.2-04, Subordinate Financing (08/06/2025).
- Regulation B, 12 CFR 1002.14, rules on providing appraisals and other valuations (accessed October 22, 2026).
- Regulation Z, 12 CFR 1026.40 (home equity plans) and 1026.15 (right of rescission) (accessed October 22, 2026).
- Federal Reserve, H.15 Selected Interest Rates: bank prime loan rate 7.00%, as of October 20, 2026.
- Freddie Mac, Primary Mortgage Market Survey: 30-year fixed 7.40%, week of October 15, 2026.
Last reviewed October 22, 2026.