The Quick Read: No single bank decides whether you can keep a second lien through a refinance. The lender that holds your existing HELOC does, because it must sign a subordination agreement that lets the new first mortgage take first position while the line stays second. Which bank writes your new first loan matters far less than whether that signature is in hand before the refinance closes.
- Agreeing to move behind a new first loan is each HELOC lender’s own choice.
- The new first lender will not close without the signed agreement.
- The HELOC lender usually tests combined leverage using your full credit limit, not just the drawn balance.
- A cash-out refinance can pay off the HELOC instead, but it replaces the entire first mortgage.
- Lendmire is a mortgage broker and can place new equity lines through its wholesale network, subject to lender guidelines.
Which Banks Offer a HELOC When Refinancing the First Mortgage?
Banks differ on whether a refinance can proceed with a HELOC left in place, but it works only when the HELOC holder agrees to subordinate. A list of banks would mislead you here. The bank writing the new first mortgage needs the agreement in hand. The bank holding the line controls whether you get it.
How large a line the equity supports.
An equity line is sized by combined loan-to-value, occupancy, and credit — not by rental coverage. Switch the occupancy or the credit band and the ceiling moves with it.
Investment-property lines require a 700 minimum credit score; second-home lines start at a 640 minimum and primary-residence lines at 600, and the combined-LTV ceiling steps down as the credit band drops on primary-residence and second-home lines and holds on investment-property lines; the line cap steps down on primary-residence lines and holds at every tier on investment-property and second-home lines.
A debt-to-income ratio above 45% requires 680+ credit. Profiles under 640 are limited to single-family homes. At least 75% of the approved line is drawn at closing. Ceilings, floors, and caps update from Lendmire’s centralized guideline source.
Line estimate
Illustrative estimate only — not a quote, Loan Estimate, approval, or commitment to lend. The rate is an editable assumption; equity-line pricing is variable through both the draw and repayment periods and never converts to fixed. Occupancy and credit drive the ceiling together: an investment property tops out at 70% combined LTV (minimum credit 700, line cap $500,000); a second home tops out at 90% combined LTV (minimum credit 640, line cap $500,000), with the ceiling stepping down as the credit band drops (the cap holds at every tier); a primary residence tops out at 90% combined LTV (minimum credit 600), and its $750,000 maximum line is available only at 75% combined LTV or below with a 700-or-better credit profile (720 on the longer-runway program) and a full appraisal. Lines above $500,000 require a full appraisal. Credit, debt-to-income, property type, and full underwriting review all affect the final line.
That changes how you shop. Instead of asking which bank offers this, ask two questions. Will my current HELOC lender subordinate to a new first loan? And does the refinance lender accept a junior lien on my property type and occupancy?
The answers depend on your combined leverage, your credit, the size of the line, and whether the new first is a plain rate-and-term refinance or a cash-out. A broker that works with several wholesale lenders can match your scenario to a program, but it cannot make your existing HELOC lender sign.
Why a Refinance Threatens the Second Lien
Lien priority follows recording order. When the new loan pays off your old first mortgage, the old lender releases its lien. With that lien gone, the HELOC would automatically move up to first position.
A new first lender will not accept that outcome. It wants to sit in first position behind nobody. As Wikipedia’s summary of subordination agreements explains, a new lender generally will not refinance the first mortgage unless the second-lien holder subordinates. The same source notes that the second-lien holder usually prefers to subordinate, since releasing and re-filing its lien would bring extra cost and priority problems.
Here is what the lien order looks like before and after a successful re-subordination.
| Stage | First position | Second position |
|---|---|---|
| Before refinance | Old first mortgage | HELOC |
| New first closes, no agreement | New first (blocked by lender) | HELOC would move up |
| New first closes, with agreement | New first mortgage | HELOC, subordinated |
Only the order of the liens changes between these stages.
How Underwriting Treats It, Step by Step
The process runs in a fixed order, and skipping a step is how files stall.
1. Disclose the HELOC to the refinance lender at the start. The new lender needs to know the line exists and that you want it to remain.
2. Ask the HELOC lender for subordination. You and the new lender can ask. The HELOC lender decides.
3. The HELOC lender reviews the new first loan. It wants to know whether it stays safe behind a larger or different first mortgage. Many lenders set a combined loan-to-value threshold for approval, as Bills.com describes.
4. Combined leverage is measured on the full line. Bills.com advises adding the new first mortgage balance to the entire HELOC credit limit. An unused limit still counts.
5. The agreement is signed and routed to title. It is recorded alongside the new mortgage so the HELOC stays second.
6. The refinance lender’s other requirements still apply. A signed agreement removes one obstacle. It does not replace credit, valuation, or occupancy review on the new first.
Two things decide the outcome more than any other. One is the HELOC lender’s willingness. The other is combined leverage measured on the full line.
A worked CLTV example (illustrative percentages only)
Say a property is valued at 100% for the exercise. The new first mortgage would equal 55% of value. The HELOC has a credit limit equal to 15% of value, though only a third of it is drawn.
Combined loan-to-value on the full line is 55% plus 15%, or 70%. Counting only the drawn balance would give a much lower figure, but the HELOC lender is unlikely to use it. If that lender’s approval threshold is under 70%, the request can fail even though your actual debt is lower. Each HELOC lender sets its own threshold, so this example is not a program rule.
Shrinking or closing an oversized unused line before the refinance is one way to improve this number.
Key Terms Defined
Subordination agreement: A signed document in which the HELOC lender agrees to rank behind the new first mortgage.
Lien priority: The order in which lenders get repaid from the property, usually set by recording order.
Combined loan-to-value (CLTV): All mortgage debt on the property, using the full HELOC limit, divided by the property’s value.
Rate-and-term refinance: A new first mortgage that replaces the old one without taking out meaningful new cash.
Cash-out refinance: A new first mortgage larger than the old balance, replacing the whole first loan.
The Three Structures That Exist
Every version of this problem resolves into one of three paths. The right one depends on how much cash you need and how soon you may refinance again.
| Path | How it works | Fits when |
|---|---|---|
| Keep and subordinate | Refinance the first only; HELOC signs a subordination | Modest line, moderate combined leverage |
| Pay off inside a cash-out | New first absorbs the HELOC balance | You need cash and want one lien |
| Pay off first | Clear the HELOC, then refinance | HELOC lender refuses or leverage is tight |
Keep and subordinate. This is the answer to the title. It works best when the line is modest, combined leverage is comfortable, and the HELOC lender has a clear subordination process. You keep an existing line that may already be set up the way you like.
Pay off inside a cash-out. A cash-out refinance can roll the HELOC balance into the new first, which also removes the second lien, as Bills.com notes. The trade-off is that the entire first mortgage is replaced and repriced, not just the new money.
Pay off the line first. This is the cleanest path when the HELOC lender won’t sign. It can also simplify a portfolio file, since later steps no longer carry a junior lien.
How lenders differ in practice
The same-lender and different-lender cases play out differently. When one institution holds both loans, the request is internal, and it knows the full picture. When the lenders differ, you coordinate two parties with separate timelines and separate risk rules. Either way, only the HELOC holder can say yes. Large banks, community lenders, and credit unions each have their own policies on subordination, and those policies change, so ask your current HELOC lender directly before you commit to a refinance lender.
What If the HELOC Lender Says No?
A refusal is allowed. The CFPB states that you may need your HELOC lender’s approval to refinance the first mortgage, that the lender can refuse, and that you may then need to pay off the HELOC to refinance.
When that happens, there are three realistic responses:
1. Reduce the issue. Lower the credit limit, or pay down and close the line, so combined leverage drops.
2. Pay it off in a cash-out. This works if the new first mortgage fits your leverage and seasoning limits.
3. Postpone the refinance. If the first mortgage is working, waiting beats forcing a restructure.
A small need for cash with low leverage often leaves room to subordinate. A large cash need usually points toward payoff. A refinance planned in the near term points toward a cash-out that absorbs the line.
Where the General Rule Breaks
A HELOC is not always a second lien. If no first mortgage is recorded, Bills.com notes the HELOC can itself be the first lien. Position depends on what is recorded, not the product name.
Paying off a second is treated as cash-out. Across our wholesale network, paying off a second lien that was not used to buy the property is generally treated as a cash-out transaction, even if you receive no money at closing. On a standard rental in a DSCR cash-out refinance, leverage tops out around 75% LTV across most of the network, with about six months of seasoning as the common expectation. Short-term-rental collateral caps lower, at 70% on a cash-out. Rent still has to cover the new payment, and DSCR compares rent to PITIA only, so clearing 1.00 does not mean positive cash flow after repairs, vacancy, and management.
Cash-out raises the stakes for consent. A larger new first mortgage means more risk for the lender sitting behind it, so a cash-out request is harder to subordinate than a rate-and-term refinance.
Some investor first liens limit added debt. If your first mortgage is itself an investor loan, read the note for language restricting additional liens. Where such language exists, it can affect any plan to keep or add a second behind that loan.
Statutory liens can outrank both. Property taxes and some assessment or association liens can take priority over earlier-recorded mortgages under state law. Check title early.
Sequencing matters. Opening a line shortly before a planned refinance can force a subordination request you did not need. If a refinance is on the horizon, the order of operations deserves thought.
What the Investor Decision Looks Like
The decision is mostly about what you are protecting. A first mortgage with favorable terms is an asset worth keeping. A cash-out refinance replaces the whole balance and reprices all of it, not just the new money. Keeping the first and leaving a junior lien avoids that, but it adds a second payment. For investors qualifying on rental coverage, combined debt is what gets tested, so the junior lien can pull the ratio down.
Holding a junior lien also gives that lender veto power over your next refinance. If you expect to refinance the first mortgage again, the line becomes a standing permission requirement. Investors with several properties often find it simpler to clear seconds before cash-out steps, so each refinance runs on a single lien.
A new line behind a new first mortgage is a separate question. Lendmire brokers HELOCs through select wholesale partners as standalone lines in first or second position, and the parameters differ by occupancy:
| Occupancy | Max CLTV | Notes |
|---|---|---|
| Investment property | 70% | Minimum 700 credit profile; line up to $500,000 |
| Second home | 90% at 720+ | Minimum 640 credit; line up to $500,000 |
| Primary residence | 90% at 720+ | Up to $500,000; larger lines step down to 75% |
Lines above $500,000 are primary-residence only, require a credit profile of 700 or better (720 on the longer-runway structure), cap at 75% CLTV, and need a full appraisal. Title must be held by an individual or a revocable living trust. LLC-held properties are not eligible, which is a sharp difference from a DSCR loan, and such a property would need a vesting change or a DSCR cash-out instead. Availability is limited to Lendmire’s 16 full-service states, which is narrower than its 41-market DSCR footprint. These figures describe new lines placed through the network, not the terms your existing HELOC lender will apply to a subordination request. Every figure is subject to lender guidelines and full file review.
Investors who would rather restructure around a DSCR cash-out can start with the complete DSCR loans guide for how coverage, leverage, and credit fit together. For a related setup, Lendmire’s piece Banks That Offer a DSCR HELOC While Keeping the Existing First Mortgage in Place covers the reverse arrangement for investor-qualified lines, which are a different product from the standard HELOC discussed on this page.
Common Misconceptions
Myth: the HELOC just stays second. Not automatically. Without a signed and recorded agreement, recording order moves the HELOC up to first when the old first is paid off.
Myth: the refinance lender can force it through. It cannot. Only the HELOC lender can agree to subordinate.
Myth: subordination changes my HELOC terms. It changes priority only. Your line’s draw and repayment structure stay as written.
Myth: only the drawn balance counts. Lenders commonly test combined leverage against the full credit limit.
Myth: I can keep my old first and fold in only the HELOC. A cash-out replaces the entire first mortgage. You cannot absorb just the line.
Myth: subordination is a cheap formality. Fees and review requirements vary by lender, so expect real underwriting rather than a rubber stamp.
What to Bring to Each Lender
Preparation cuts down the back-and-forth with each lender. Gather the following items:
- Your most recent HELOC statement showing balance and credit limit.
- The current first mortgage payoff figure.
- Your property’s estimated value and any recent appraisal.
- Your plan for the new first: rate-and-term or cash-out.
- A short list of questions for each lender: does it subordinate, what combined leverage does it accept, and what does it charge?
Ask the HELOC lender those questions before you pick a refinance lender. If it will not subordinate, you will want a payoff-or-restructure plan before you spend time on appraisals and applications.
Frequently Asked Questions
Can I refinance my first mortgage and keep my HELOC?
Yes, if the HELOC lender signs a subordination agreement. The new first lender will not close without it, and the HELOC lender is free to decline. If it declines, you can pay down and close the line, roll it into a cash-out, or hold off on the refinance.
Does subordination change my HELOC terms?
It does not. Subordination only moves your line behind the new first mortgage in priority. The draw period, repayment structure, and credit limit stay as written. The new first lender’s separate requirements still apply.
Does the whole credit limit count, or just what I have drawn?
Lenders commonly count the full limit when testing combined leverage. An unused line still reduces the room available behind the new first mortgage. Lowering the limit before the request can improve the result.
Is paying off a second lien in a refinance treated as cash-out?
On standard DSCR investor files in our network, paying off a non-purchase-money second is generally treated as a cash-out even if you receive no money. That means cash-out leverage limits and seasoning expectations apply. Program terms vary by lender and file.
Which bank should I use for the new first mortgage?
The best fit depends on your property type, occupancy, credit profile, combined leverage, and whether you want cash out. A broker that works with several wholesale lenders can compare programs against your scenario. Lendmire can help you compare HELOC options based on the property, the equity available, credit profile, combined leverage, and your goals, and it does not lend directly.
About Lendmire
Lendmire, NMLS# 2371349, is a mortgage brokerage that arranges home equity lines of credit through wholesale lending partners in its 16 full-service states. Lines on primary residences, second homes and investment properties are each reviewed individually by the lender under the program’s occupancy, credit and combined-loan-to-value guidelines. 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. Wikipedia, “Subordination agreement”
2. Bills.com
3. CFPB
This article is part of Lendmire’s HELOC & home equity loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: Banks That Offer a DSCR HELOC Alongside Your Current First Mortgage · Banks That Offer an Investment Property HELOC for a Mortgaged Rental With a Fixed First
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.