The Quick Read: The options for combining an existing mortgage and a HELOC share one basic structure. A new first-lien mortgage pays off both old liens, and you make one payment afterward. Whether the file counts as limited cash-out or full cash-out depends on what the HELOC paid for. That classification sets the leverage, the seasoning tests and the cost of the loan.
Key Takeaways
- You never merge two loans. A new first mortgage replaces both.
- A HELOC used only to buy the home is treated differently from one used for other spending.
- Conventional cash-out tops out at 80% LTV on a one-unit primary residence. One wholesale lane goes higher with no mortgage insurance.
- The first mortgage being paid off generally has to be at least 12 months old, with named exceptions.
- VA streamline refinance and FHA Streamline are not built to pay off a HELOC for cash.
What Does “Combining” a Mortgage and a HELOC Actually Mean?
You are not merging anything. A new lender writes a new first mortgage. At closing, the settlement agent pays off the old first mortgage and the HELOC balance. Both old liens are released. Anything left over goes to you.
Cash-out refinance estimate
The starting figures are an example value with a balance and a cash request in proportion. Replace them with yours.
Editable benchmark: 7.18% as of November 5, 2026 · Freddie Mac 30-year average via FRED®. A conventional market reference, not a cash-out refinance quote.
Illustrative starting assumptions: a $350,000 home value, a $193,000 current balance, the agency cap on a one-unit principal residence, a thirty-year term at the current Freddie Mac benchmark, and property taxes and insurance estimated at typical national rates. Every field is editable.
Illustrative estimate only — not a Loan Estimate, approval, quote, or commitment to lend. The rate field carries the weekly Freddie Mac thirty-year conventional benchmark, a market reference and not a cash-out refinance quote; a cash-out loan is priced by the lender at lock. The cash available is the loan the program cap allows less the balances paid off, before closing costs, which are not included. The HELOC line is the program’s combined loan-to-value ceiling applied to the same value and balance. Taxes and insurance are editable estimates. Licensed in sixteen states for consumer mortgages.
The federal consumer-finance regulator describes a cash-out refinance as replacing your existing mortgage with a bigger one and taking the difference in cash, and notes that you often have to pay closing costs. Same idea here. The bigger loan just happens to cover a second lien too.
The new loan amount is built from four pieces:
- the first mortgage payoff
- the HELOC payoff (drawn balance, not the credit limit)
- closing costs, if they are rolled in
- any cash you want in hand
The total has to fit under the program’s LTV cap against the appraised value. If it doesn’t, the file doesn’t work as one loan, and a different structure is needed.
Lendmire’s cash-out refinance programs page lays out the programs the brokerage arranges through wholesale lenders in the 16 states where it does consumer lending.
Why Is This Usually Treated as Cash-Out?
Because of how lenders classify the second lien. Paying off a first mortgage alone is a refinance, which is a rate-and-term transaction. Add a HELOC to the payoff and the question becomes: what did the HELOC fund?
Here’s the catch. A HELOC that paid for the purchase itself, a piggyback structure, is treated like part of the original purchase money. A HELOC drawn later for a kitchen, a car, a tuition bill or debt payoff is not. Paying that one off pulls the whole file into full cash-out territory.
The Fannie Mae Selling Guide on limited cash-out refinances says that when new subordinate financing comes with a first-mortgage refinance, the transaction is limited cash-out only if the first mortgage meets the limited cash-out criteria. Freddie Mac’s guide defines a cash-out refinance as a mortgage with no specific restrictions on how the proceeds are used.
Across the wholesale programs placed through Lendmire, the practical test is simple. Ask what the HELOC bought. If the answer is anything besides the home, plan on a full cash-out file.
How Is the Loan Underwritten, Step by Step?
Every program runs the same sequence, with different thresholds.
1. Pull payoff statements for both liens. The first mortgage payoff includes accrued interest. The HELOC payoff is the drawn balance plus interest. Many lenders also want the line closed at payoff, usually with a signed closure letter. That requirement varies by lender.
2. Document what the HELOC funded. Draw history, the original purchase file, or statements showing when money was pulled. This decides limited versus full cash-out.
3. Run the program tests. Title seasoning, age of the first mortgage, payment history, occupancy and credit all get checked against the program.
4. Order the appraisal. The appraised value sets the maximum loan, so plan on an appraisal for a cash-out file. VA requires one on cash-out loans.
5. Underwrite the combined payment. One new payment replaces two. Income, credit and debt-to-income still have to qualify. The wholesale conventional programs start at a 620 decision score, and the automated finding governs most files, with a total ratio ceiling of 50%. Manually underwritten loans run tighter, at 36% or 45% ratios depending on reserves and scores. All subject to lender guidelines and full file review.
6. Close and pay off both liens. The settlement agent wires the payoffs. Any remainder goes to the borrower. The CFPB notes costs on these loans can include origination, appraisal and title fees.
What Leverage Does a Conventional Cash-Out Allow?
On a one-unit primary residence, conventional cash-out reaches 80% LTV. Two- to four-unit properties, second homes and investment properties top out at 75%. Occupancy sets the leverage. A cash-out can be written on any of those property uses, so owning a second home doesn’t shut the door.
Mortgage insurance is required above 80% LTV on the agency path. It can be cancelled at 80% of the original value on request, and servicers must end it automatically at 78%. The one exception is a wholesale no-MI lane. It reaches 89.99% LTV with no mortgage insurance, at a 680 score and a 50% ratio, on a thirty-year fixed loan on a primary residence at a conforming balance. That lane carries its own six months of seasoning.
In Texas, a cash-out on a homestead is a Section 50(a)(6) loan, capped at 80% of the home’s value by the state constitution. The wholesale no-MI lane is not written there.
The CFPB’s home equity guide notes lenders typically want you to keep an equity cushion after the loan. Treat that as general framing. The program cap is what actually binds.
What Seasoning Rules Apply?
Two clocks run on a conventional cash-out. Under Freddie Mac’s cash-out section, at least one borrower must have been on title for six months before the note date. When proceeds pay off a first lien, that first lien must be seasoned at least 12 months.
Freddie lists named exceptions to the 12-month test: special-purpose cash-out loans, a first lien that is itself a HELOC, construction-to-permanent loans and renovation mortgages. The wholesale parameters also recognize delayed financing, inheritance and legal-award exceptions to the title clock.
Timing matters here. A borrower who bought, drew the HELOC for a remodel and wants to roll everything up eight months later fails the 12-month first-lien test. Settlement statements from the purchase document the dates. Pull them early.
Which Structures Can You Use?
Combining isn’t the only path. Here’s how the options line up for an owner-occupant.
| Option | First mortgage | HELOC | Main tradeoff |
|---|---|---|---|
| Cash-out refinance, combine both | Replaced | Paid off | New terms on the whole balance |
| Refinance first only, keep HELOC | Replaced | Stays, needs resubordination | HELOC lender may refuse |
| Pay HELOC off separately | Stays | Paid with other funds | Needs cash or another loan |
| Rate-and-term refinance | Replaced | Only purchase-money second | Not available for later HELOC draws |
| FHA or VA streamline | Replaced (same program) | Not included | Cannot pull cash |
The second row trips people up. When you refinance a first mortgage and leave the HELOC in place, the HELOC would normally slide into first position. The new first-lien lender won’t accept that. So the HELOC lender has to agree to resubordinate, meaning step back behind the new loan, and some lenders agree while others won’t. That’s the reason combining is the standard route.
Where Does the Rule Break?
Several edge cases change the answer.
Government loans. The VA says the IRRRL is a “VA to VA” loan, available only with an existing VA-guaranteed loan on the property. It is not a vehicle for paying off a HELOC or taking cash. The VA cash-out loan is the route for that. It needs a Certificate of Eligibility, occupancy as your home, and an appraisal.
The FHA Streamline is a no-cash-out product for an existing FHA loan: no appraisal, limited credit review, and a net tangible benefit test. It isn’t designed to retire a separate HELOC.
First-lien HELOC. If the HELOC is your only mortgage, Freddie exempts it from the 12-month first-lien test.
High-LTV limited cash-out. At the highest leverage levels, Fannie Mae requires that it own the existing mortgage, and lenders must document ownership when the automated system can’t identify it. Terms vary by lender guidelines, property type, leverage, credit profile, and full file review.
Manufactured housing. Single-width manufactured homes are limited to limited cash-out refinances under the Fannie Mae Eligibility Matrix. A full cash-out isn’t available.
Credit events. Agency waiting periods apply after a bankruptcy, foreclosure or short sale: four years from a chapter 7 discharge, seven from a foreclosure, four from a short sale or deed-in-lieu. Documented extenuating circumstances can shorten them.
What Does It Do to Your Payment and Costs?
One payment replaces two. But it’s a different payment.
A HELOC usually carries a variable rate and an interest-only draw period. A new first mortgage is typically fixed and fully amortizing. Your monthly obligation may fall or rise depending on how much principal is now scheduled. The CFPB cautions you to consider carefully the interest rate, especially if it is higher than your current mortgage’s, and says a cash-out refinance may be more or less expensive than a HELOC depending on terms.
Three costs deserve a hard look:
- Closing costs on the whole balance. A new first lien carries full closing costs. Rolling them in raises the loan amount and counts against the LTV cap.
- Term reset. Moving a HELOC balance that might have been repaid in a few years into a 30-year term lowers the payment and stretches the debt. The CFPB guide notes a cash-out refinance may extend the time it takes to pay off the mortgage.
- Giving up your existing first-mortgage terms. If your current first mortgage has terms you’d hate to lose, the bigger loan puts the entire balance on new terms, including the part that was fine before.
Break-even thinking helps. Compare the full cost of the new loan to what you’d pay by leaving the first mortgage alone and handling the HELOC another way. If the first mortgage is the better piece of the stack, combining may cost more than it saves.
The home is the collateral. Default can mean foreclosure. That risk doesn’t change because there is one loan instead of two.
Key Terms Defined
Cash-out refinance: A new mortgage larger than the one it replaces, with the difference paid to the borrower or used to pay off other debt.
HELOC: A home equity line of credit, a revolving second lien that you borrow against as needed during a draw period.
Limited cash-out refinance: A refinance that pays off the first mortgage, closing costs and a purchase-money second lien, with only incidental cash back.
Subordination (resubordination): A lender’s agreement to rank behind a new first mortgage instead of moving into first position.
Lien position: The order in which lenders get repaid from the home if it is sold or foreclosed.
Seasoning: The minimum time you have held title or the existing loan has been in place before a new loan is allowed.
Common Misunderstandings
“Paying off my HELOC is always rate-and-term.” It isn’t. What the HELOC funded decides it.
“Limited cash-out means zero cash.” A small amount is allowed. Fannie Mae’s limit is the lesser of 2% of the new loan amount or $2,000.
“A VA IRRRL can clear my HELOC.” It can’t. Cash or a HELOC payoff needs a cash-out loan.
“Seasoning is the same for everyone.” The tests have named exceptions, and FHA’s differ.
What Does the Borrower’s Decision Look Like?
Picture a homeowner with a first mortgage on terms they like and a HELOC drawn heavily for a renovation. The HELOC is variable and the balance is large relative to the first mortgage. Combining means the whole balance moves to new terms. The question is whether the stability of one fixed payment is worth giving up the first mortgage as it stands.
Now take a homeowner whose first mortgage is on terms they’d happily replace and whose HELOC is the smaller piece. Here combining fits cleanly, provided the total balance clears the LTV cap with room for costs.
A third case: the borrower is short on equity. The combined payoff plus costs exceeds 80% of value. In that situation, the options are paying down the HELOC first, or leaving the structure alone.
Run these checks before you apply:
- Total of both payoffs, plus costs, as a percentage of likely value
- Age of the first mortgage and how long you have held title
- What the HELOC funded
- Whether the HELOC is closed or can be closed at payoff
- Whether you live in the home, since occupancy sets leverage
If you are weighing a cash-out refinance against keeping the loan you have, Lendmire can help you compare the programs and the equity each one reaches. Everything above is subject to lender guidelines and full file review, and none of it is a commitment to lend.
Frequently Asked Questions
Can I combine the two with no cash out?
Only when the HELOC was used to buy the home. Then the file can qualify as limited cash-out, with only incidental cash back. A HELOC drawn for anything else makes the payoff a full cash-out transaction, even if you take no money at closing.
Can I refinance only my first mortgage and keep the HELOC?
Sometimes. The new first-lien lender requires the HELOC to stay behind it, so the HELOC lender must agree to resubordinate. Some lenders won’t. If yours refuses, paying off the HELOC in the refinance is usually the only route.
What if I don’t have enough equity?
Conventional cash-out reaches 80% LTV on a one-unit primary residence, and 75% on multi-unit homes, second homes and investment property. A wholesale lane goes to 89.99% with no mortgage insurance at a 680 score on a thirty-year fixed primary residence at a conforming balance. If neither fits, pay down the HELOC first or leave the structure as it is. Exact terms depend on the lender’s guidelines, property type, leverage, and a full review of the borrower’s file.
Do closing costs get rolled into the loan?
They can be, which raises the loan amount. The total still has to fit under the LTV cap. The CFPB notes costs can include origination, appraisal and title fees.
Does the HELOC have to be closed?
Many lenders require it, often with a signed closure letter. Requirements vary by lender, so confirm with the HELOC servicer and the lender before closing.
For your own numbers, request a scenario review with Lendmire.
About Lendmire
Lendmire is a mortgage brokerage (NMLS# 2371349) licensed for consumer mortgage lending in 16 states, arranging FHA, VA, conventional and jumbo purchase and refinance loans through a wholesale lending network. Eligibility is determined by the lender on each file. Scotsman Guide named Lendmire a Top Mortgage Workplace in both 2025 and 2026.
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Informational only. Not a Loan Estimate, approval, or commitment to lend. Program availability and eligibility are subject to lender guidelines, credit approval, property review, and underwriting.
References
1. CFPB: What other types of loans are similar to a HELOC
2. Fannie Mae Selling Guide B2-1.3-02
4. CFPB cash-out refinance research
5. CFPB: Using home equity to meet financial needs
8. Fannie Mae Eligibility Matrix
This article is part of Lendmire’s cash-out refinance program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How Much Cash Can You Pull Out of Your Home Equity With a Cash-Out Refinance? · How to Plan and Use a Cash-Out Refinance to Replace a HELOC · Cash-Out Refinance vs HELOC for a Homeowner Scaling to Ten Doors
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
- Mortgage Loan Originator · NMLS# 1129696 · Verify on NMLS Consumer Access
- North Carolina Real Estate Broker · License# 343312 · Verify on NCREC
- North Carolina Insurance Producer · License# 19053198 · Property, Casualty, Life, Health · Verify on NAIC SBS
- Lendmire LLC · Firm NMLS# 2371349 · Verify firm licensure
Compliance and disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage broker and is not a direct lender, depository institution, financial advisor, or tax professional. Content in this article is general market analysis and educational information — not financial, legal, or tax advice for any specific situation. Lendmire does not guarantee loan approval; every transaction is subject to underwriting by the funding lender. Mortgage pricing and loan program guidelines are subject to change at any time without notice and vary by borrower characteristics, property type, and state regulations. Lendmire complies with Equal Housing Opportunity. Licensure verification: NMLS Consumer Access.