Can You Refinance a First and Second Mortgage Into One Loan?
Carrying both a primary mortgage and a second mortgage or HELOC means two payments, two rates, and sometimes two different lenders to keep track of, which is part of why combining them into a single loan appeals to a lot of homeowners.
The short answer
Yes, a homeowner can typically refinance a first mortgage and a second lien into a single new loan through what’s often called a debt-consolidation or cash-out refinance, as long as the combined balance fits within the home’s current value and the lender’s loan-to-value limits. The new loan pays off both existing liens and replaces them with one mortgage, one rate, and one monthly payment.
How the mechanics work
The new loan amount needs to be large enough to cover the payoff of both the first mortgage and the second lien, plus any closing costs being rolled in. Because this generally increases the loan balance relative to just refinancing the first mortgage alone, it’s treated similarly to a cash-out refinance, even though the “cash” is going directly to pay off the second loan rather than into the borrower’s pocket. The lender orders a new appraisal, and the combined loan-to-value ratio of the proposed new loan against that appraised value determines whether the combination is possible under the lender’s limits.
Why homeowners consider it
- Simplicity. One loan, one servicer, and one due date replace the complexity of tracking two separate payments and two sets of terms.
- Rate certainty. A second lien or HELOC is often variable-rate, so folding it into a fixed-rate first mortgage can lock in predictable payments going forward.
- Potential savings. If the second lien carries a notably higher rate than current mortgage rates, combining the two can lower the blended interest cost, though this depends heavily on where rates stand at the time.
- Cleaner future refinancing. Having a single lien can simplify any future refinance, since a subsequent lender won’t need to coordinate with a second lienholder.
What can complicate the combination
If the home’s value hasn’t risen enough to comfortably cover both balances within the lender’s loan-to-value limits, the homeowner may need to bring cash to closing or the refinance may not be approved as planned. A refinance appraisal that comes in low is one of the more common reasons a planned consolidation falls through or needs restructuring. Closing costs on the new, larger loan also need to be weighed against the savings from simplifying two loans into one.
Alternatives worth comparing
Some homeowners instead choose a rate-and-term refinance of just the first mortgage while leaving the second lien in place, particularly if the second lien has a low balance or a favorable rate already. Others explore whether a HELOC with better terms could replace an existing second lien without touching the first mortgage at all. The right approach generally depends on the rates and balances of both existing loans compared with what a combined refinance would offer.
The takeaway
Combining a first and second mortgage into one refinance is a common and often practical way to simplify multiple home loans, but it depends on having enough equity to support the combined balance and on the math actually working out in the homeowner’s favor. Comparing the blended cost of the current two loans against the terms of a single new loan is the key step before deciding.