Consolidate a HELOC and First Mortgage: One Payment or Two?
You've got two house payments, and the HELOC one moves every time the rate does. Maybe the draw period ends next year and you've heard the payment is about to jump. Or maybe you're just tired of paying two bills on one house.
If you're trying to figure out whether to consolidate a HELOC and first mortgage into one payment, this page helps you check the month before you sign anything. There are three honest paths: one new loan pays off both, you keep the first mortgage and fix the second, or you leave it all alone.
Freed-up cash flow feels better. It's a real weight off the shoulders, leaving room for life and investing and vacations, instead of working hard all month just to pay interest to the banks.
The goal is more of your own money staying with you each month, so you can get back in the game and start building wealth.
I'm Jim Duffy, Branch Partner with ALCOVA Mortgage, licensed in South Carolina, Georgia and Florida.
Why a HELOC payment can change on you
A HELOC is a line of credit against your house. During what's called the draw period, you can borrow, pay it down and borrow again. The CFPB uses 10 years as an example of how long a draw period might last (CFPB).
Three things can move that payment:
The rate. HELOCs usually have a variable rate, so the payment can change from month to month even if you don't borrow another dollar.
The end of the draw period. Some plans let you pay interest only while the line is open. When the draw period ends, you can't borrow anymore and you start paying the balance back. The CFPB says monthly payments are often significantly higher once you're in repayment.
A full payoff. In some cases the whole balance comes due when repayment begins.
Pull out your HELOC agreement or call the lender to find out when the draw period ends, how the repayment amount is figured and how your rate is set.
Path 1: One new loan pays off both
This is the path most people picture when they want to combine a HELOC and mortgage into one payment. A new first mortgage is big enough to pay off your current first mortgage and the HELOC balance. The HELOC is paid off and the line is closed, so its lien comes off the house, and you're left with one house payment.
That's what it means to refinance a HELOC into a mortgage. It's also called a cash out refinance to pay off a HELOC, and the next section explains why that label sticks even when no cash comes to you.
The upside: one bill, one due date, and the option of a fixed rate so the payment stops moving.
The downside:
The whole balance starts over on a new long-term loan, not just the HELOC part.
Closing costs apply to the full new loan amount.
If your first mortgage has a low rate, you give that rate up on the whole balance.
A lower monthly payment is not the same as less total interest. Stretching debt over more years can cost more over the life of the loan.
When your first rate isn't one you'd miss, this can be the cleanest way to get rid of the moving payment for good.
Heads-up: paying off a HELOC usually counts as "cash-out"
Most homeowners don't know this part.
Under Fannie Mae's rules, a refinance that just pays off your old first mortgage can be a "limited cash-out" refinance. It can only pay off a second loan like a HELOC and stay in that category if the entire second loan was used to buy the home, and the lender has to document that (Fannie Mae B2-1.3-02).
If you opened the HELOC later for a kitchen, a roof, the cards, tuition or anything else, paying it off makes the new loan a cash-out refinance. Fannie Mae says that applies "regardless of whether additional cash out is taken" (Fannie Mae B2-1.2-04). You can leave the closing table with nothing in your pocket, and it's still cash-out.
Here's why that matters:
How much you can borrow. For many conventional loans on a one-unit primary home, Fannie Mae's current Eligibility Matrix (dated August 5, 2026) caps a cash-out refinance at 80% of the home's value, counting all loans on the house. A limited cash-out refinance can go higher (Fannie Mae Eligibility Matrix).
Pricing. Cash-out refinances carry their own price adjustments (Fannie Mae B2-1.3-03).
FHA, VA and other programs have their own rules, and a second loan used to buy the house can be treated differently. The lender confirms how your loan is classified.
Path 2: Keep the first mortgage, fix the second
If your first mortgage rate is the cheapest money you've got, leave it alone. Restructure around the mortgage instead of replacing it.
There are a few ways to do that:
Replace the HELOC with a fixed-rate home equity loan. A home equity loan is closed-end, meaning you get the money once and pay it back on a set schedule (CFPB). It pays off the HELOC, and the payment stops moving.
Ask about a fixed-rate option. Some HELOCs let you convert some or all of the balance to a fixed rate. That rate is usually higher than the variable rate, but it's more predictable (CFPB).
Pay it down hard. If the balance is small, put every extra dollar toward it before repayment starts.
If your first mortgage is a VA loan, a home equity loan or HELOC behind it is possible once you've built enough equity, since VA loans often start near 100% of the home's value.
One more thing if you ever want to refinance the first and keep the HELOC open. The HELOC lender has to agree to stay in second place behind the new loan, which is called subordination. The CFPB says HELOC lenders can refuse, and if they do, you may need to pay off the HELOC to refinance (CFPB). It can also add time, so start early.
If you're still deciding between a HELOC and a cash-out for other debts, that's covered in HELOC for debt consolidation vs. cash-out refinance. This page is for people who already have both loans.
Put both paths side by side on one number
Lay it out like this, using your own statements and your own estimate:
Today (first + HELOC) | Path 1: one new loan | Path 2: keep first, fix the HELOC | |
|---|---|---|---|
Total leaving your account each month | First payment + HELOC payment | One new payment | First payment + new second payment |
Does any payment still move? | Yes, if the HELOC is variable | Not with a fixed rate | Not with a fixed home equity loan |
Your first mortgage rate | Kept | Replaced | Kept |
Years left to pay | What you have now | Starts over | First unchanged; second on its own schedule |
Closing costs | None | On the full new loan | On the second loan only |
Total interest over time | Your baseline | Can be higher if stretched longer | Depends on the second loan's term |
Illustration only, round made-up numbers, not a quote: say the first mortgage payment is $1,500 and the HELOC payment is $400. Today's total is $1,900, and that's the number to beat. Put your Path 1 estimate and your Path 2 estimate next to it, and the difference is your "freed up each month" number for each path.
That monthly number is the headline. If a path wins the month by adding a lot of years, write that down too.
Run it in the calculator
The FreeUpCashFlow calculator does the first column for you. Put in your home value and your first mortgage balance and payment. Then use + Add a debt for the HELOC, with its balance and current payment from your latest statement. If your HELOC lender has given you the repayment amount, run it again with that number.
Run the free cash-flow estimate. Estimate only: not a rate quote.
The answer is on the Freed up each month line. If it's big, it's worth a conversation. If it barely moves, that's a good answer too.
A real example
I recently helped a couple who had a first mortgage at around 4.25%, as I recall. After they bought the house, they opened a HELOC. Then they watched its rate and payment keep climbing as the Fed raised rates. HELOCs are tied to prime, and prime generally runs about 3 points over the Fed funds rate, so a HELOC moves at the same pace the Fed does.
They also wanted to simplify their life with one payment instead of two.
We rolled the HELOC and the first mortgage into one new loan. Their payment came down a little, not by a lot, and now there's just one. Because the HELOC was opened after they bought, it counted as a cash-out refinance even though they didn't take any cash. Now that it's all one loan, if rates ever drop enough to make sense, they can do one more refinance, a rate-and-term with no cash out.
That's three wins: a lower monthly payment, one payment instead of two, and a setup for a no-cash-out refinance later.
When to leave it alone
Sometimes the right move is no move. Leave both loans where they are when:
The HELOC balance is small and you can pay it off in a year or two.
Your first rate is very low and the estimate barely changes the month.
You plan to sell soon, before the closing costs on a new loan would pay for themselves.
The HELOC would just get drawn right back up after you pay it off.
Debt elimination is the goal, not more paperwork. If the math says wait, then wait.
SC, GA, or FL? Talk it through
I'm Jim Duffy, Branch Partner at ALCOVA Mortgage, NMLS #35122. ALCOVA Mortgage, LLC is NMLS #40508. I'm licensed in South Carolina, Georgia and Florida only.
South Carolina: your refinance closes with a closing attorney. More on the state in South Carolina cash-out refinance for debt elimination.
Georgia: a closing attorney is part of your closing too. See Georgia cash-out refinance for debt elimination.
Florida: a title company commonly closes the loan, and no attorney is required. See Florida debt consolidation refinance.
Run the numbers first (estimate, not a quote). If the month moves, give me a call and we'll look at keeping the first versus replacing it. If leaving it alone is the better fit, I'll tell you.
The real win isn't just a smaller payment. It's getting back in the game, with money left at the end of the month to put in the 401k, build a cushion or invest in your future, instead of watching a moving HELOC payment sucking you dry every month.
FAQ
Can I combine my HELOC and mortgage if I don't take any cash out?
Yes. But if the HELOC wasn't used to buy the home, the new loan is usually still classed as a cash-out refinance, even with no money to you. That can change how much you can borrow and the pricing. Your lender confirms.
What happens to my old mortgage and HELOC at closing?
Both get paid off from the new loan. The HELOC line is closed so its lien comes off the house, and the new loan becomes the only mortgage on the home.
Should I keep my low first rate and just replace the HELOC?
Often, yes. If your first rate is the cheapest money you have, replacing just the HELOC with a fixed-rate home equity loan, or paying it down, can stop the moving payment and keep that rate.
My draw period ends next year. What should I do now?
Check your HELOC agreement or ask your lender what the repayment payment will be. Then run both paths in the calculator now, before the new payment shows up.
Is the FreeUpCashFlow number a quote?
No. It's an estimate to help you see whether the month could move. It isn't a rate quote, an approval or an offer to lend. Real terms come after a lender reviews your credit, income, home value and program.
Two house payments, one of them moving? See what one payment, or a fixed second, would do to your month.
Run the FreeUpCashFlow calculator (estimate, not a quote)
It's free. If the freed-up amount is big, give me a call. If it's small, you just saved yourself the paperwork.
Jim Duffy
Branch Partner, ALCOVA Mortgage
NMLS #35122
(843) 735-0865
Licensed in South Carolina, Georgia, and Florida only.
Compliance: Estimate only: not a rate quote, commitment to lend, application, or offer of credit. Estimates on this site are illustrations, not quotes or commitments to lend. All loans are subject to credit approval, income and property verification, appraisal, and program guidelines. Your first mortgage, HELOC, and any new loan are secured by your home. Paying off other debts with home equity puts that debt on your house; miss a payment and the home is at risk. Lowering your monthly payment can increase the total interest you pay over the life of the loan. Loan classification (cash-out or limited cash-out), borrowing limits, and pricing are set by the program and confirmed by the lender. Available for property in South Carolina, Georgia, and Florida only. Equal Housing Lender. Jim Duffy, Branch Partner, NMLS #35122. ALCOVA Mortgage, LLC NMLS #40508.
